By driven force fit

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This subclass is indented under subclass 428.  Process including fastening a first part to another part having a cavity by applying force to at least one of the parts to cause a portion of the first part to be inserted in the cavity, the relative dimensions of the inserted part and cavity being such that the parts are distorted within their elastic limits to secure them together.
(1) Note. A force fit is considered to exist if the overall dimensions of the hole or inserted part are not permanently changed. Thus, the formation of lands and grooves in the hole, effected by forcing a splined part thereinto, is found in this subclass since the parts are held together in the direction of assembly by the elasticity of the parts.

 
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Patent Number
Title
  Date
3935631 Method of seating a bearing Feb-3-1976
This invention discloses a novel and improved method of seating a bearing, especially for use in chair controls for tiltable chairs. A multi-pointed star-shaped hole is cut in the support and a bearing, preferably made of nylon, which has a series of circular rings on its periphery, each ring diminishing...     
3938245 Terminal applicator Feb-17-1976
An applicator is provided for inserting a terminal in a hole in a circuit board comprising terminal insertion tooling, having an elongated insertion blade and a pair of preloaded spring fingers, and an anvil including a retractable locating and gauging pin surrounded by an actuator collar. A hole in...     
3942232 Vent structure fabrication method Mar-9-1976
A vent structure for reliable long term operation at high temperatures is fabricated by annealing a tubing of predetermined length and size, placing a predetermined number of strands of stabilized zirconium oxide yarn of predetermined diameter longitudinally into one end of the tubing a predetermined...     
3942234 Seal and bearing installation tool Mar-9-1976
A seal and bearing installation tool kit which is composed of a plurality of different tools for installing different sizes of seals and bearings. Each tool of this invention is composed of a tubular member which has a hollow chamber and open at both ends. Within one of the ends is frictionally supported...     
3951046 Push rod and tappet assembly Apr-20-1976
A push rod and tappet assembly for a cam actuated pump in which a tappet having a barbed shank is lightly press fitted, during assembly, part-way into the hollow end of the push rod so that during the initial operating cycle of the pump, as the cam on which the tappet rides rotates through the first...     
3952399 Uniting two elements Apr-27-1976
There is shown an actuating device comprising a piston and cylinder unit having a piston with a metal forming configuration on the side thereof from which a piston rod projects and a recess is provided in the rod adjacent the configuration. The arrangement is such that upon impact by that side of the...     
3952904 Container, particularly a beer barrel Apr-27-1976
Container, particularly a beer barrel, with a first part, made of plastics in the form of a vessel, open at one end, the part merging in the vicinity of the open end via a shoulder into a cylindrical part with enlarged diameter, which receives with a close fit a cylindrical end wall portion of a second...     
3953906 Fastener assembly May-4-1976
The invention is concerned with fasteners which are used to secure a plurality of plates, or other structural members, together in an interference fit between the fastener and the plates to impart a residual hoop stress within the structural members and around the hole through which the fastener extends...     
3960637 Composite structural member Jun-1-1976
A composite building component including a center web and opposed elongate flange elements united to opposed edge margins of the web. The edge margins of the web seat within web-receiving channels defined in the flange elements, and are compressed through the act of inserting the margins into the channels...     
3973313 Apparatus for assembling micro-filter units Aug-10-1976
An apparatus and a method are provided for assembling micro-filter units having a barrel, a plug adapted to be inserted in the barrel, and a filter disc clamped between the barrel and the plug, which are characterized in that the filter disc is punched out and seated in the barrel in a single stroke...     
3974621 Wedge-bolted joint Aug-17-1976
A fastening device for the connection of two bodies having aligned openings therein utilizing two members having facing inclined surfaces and projections engaging the lip of an opening such that an impact force creates a wedging action resulting in firmly securing the two bodies.
3983736 Helically wound mandrel assembly Oct-5-1976
A mandrel assembly for expanding holes through work pieces including a helically wound coil member with interconnected helical flights and a support member with the support member supporting the flights of the coil member so that the leadingmost flight has a first effective outside diameter smaller than...     
3987532 Assembling apparatus Oct-26-1976
Apparatus is disclosed for assembling first and second tubular components in a telescoping, press-fit relationship with each other. The apparatus includes a rotatable, motor driven plate including on the periphery thereof a plurality of component support means, a portion of each being spring biased in...     
3995356 Valve system Dec-7-1976
An air diverter valve for selectively diverting the output of an air pump in a vehicular emission control system from a combustion system to a diversion system, in response to each or all of a variety of system conditions including abrupt rise in intake manifold vacuum, continuing low intake manifold...     
3995360 Self-locking retaining ring assembly tool Dec-7-1976
An assembly tool for closed, self-locking retaining rings includes an extensible and retractable, tubular, centering sleeve for centering the ring on a ram recessed relative to the sleeve. The sleeve is carried by a housing in telescoping relationship with the ram. One end of the sleeve is fashioned...     
4002516 Hermetic closure Jan-11-1977
A hermetic closure cap of resilient thermoplastic material constructed so as to be removably securable in an aperture made in a rigid sheet. This cap is retained by a normally non-deformable but laterally retractable part pressing against the edges of the rigid sheet defining the aperture and which cap...     
4029426 Tubular fastening system Jun-14-1977
A tubular fastening system for holding a plurality of members together with a predictable holding force, including a tubular eyelet of ductile but non-work hardening material pressed into a non-circular aperture formed in a rigid support plate. The predictable holding force of the tubular fastening system...     
4041769 Densitometer Aug-16-1977
A vibration densitometer having a permanent magnet biased magnetostrictive drive unit.
4048898 Fastener for multi metal stack-ups Sep-20-1977
A fastener, primarily of the precision type for aircraft use in holding together multiple metal stack-ups, makes use of a sleeve, a headed shaft and a nut. The shaft and sleeve as a subassembly is inserted in a hole in a stack-up of sheets, the nut is applied to the shaft and the shaft is drawn forceably...     
4052779 Method for assembling micro-filter units Oct-11-1977
An apparatus and a method are provided for assembling micro-filter units having a barrel, a plug adapted to be inserted in the barrel, and a filter disc clamped between the barrel and the plug, which are characterized in that the filter disc is punched out and seated in the barrel in a single stroke...     
4065219 Shaft adapter Dec-27-1977
A shaft adapter for a fan motor has an elongated configuration with a fan motor shaft receiving socket portion provided at one end and a fan blade mounting shaft provided at the other end. By making a receptacle formed in the socket portion of a different diameter than the shaft, different diameter motor...     
4069731 Wedging device Jan-24-1978
A fastening device for the connection of two bodies having aligned openings therein utilizing two members having facing inclined surfaces and projections engaging the lip of an opening such that an impact force creates a wedging action resulting in firmly securing the two bodies.
4071943 Wax container material Feb-7-1978
A novel method for containing materials in a container material adaptable to a wide variety of different materials including food products and household chemical products is described. The material utilized is intended to be a substitute for glass, plastic or metal containers, and comprises a resin hardened...     
4073047 Method of making vibration damper Feb-14-1978
An improved vibration damper for use with oscillating bodies and the method of making said damper. The damper includes an inner core member or hub, an outer inertia mass member or inertia ring surrounding and spaced from the hub, and compressible resilient damping means such as a layer of compressible...     
4087896 Sleeve bolt installation nut May-9-1978
This invention describes a system and method for precisely locating a combined sleeve bolt in an opening located in a plurality of materials adapted to be connected together. The adjustable nut is constructed in two parts and rotatably attached to each other. The first part contains an internal thread...     
4092773 Method for forming a clevis Jun-6-1978
A clevis is formed from two pieces, a shank and a U-member. The proximal end of the shank is inserted through a hole in the U-member and said end is rolled outwardly to form a flange which prevents distal movement of the shank.
4114930 Swaged tube coupling Sep-19-1978
A coupling to support tubing both inside and outside. The end of the tubing is swaged by a press-fit sleeve onto a tubular insert having exterior serrations and the tubing becomes permanently held between the insert and the sleeve. In a variation a ring encircles the end of the tubing. This ring and...     
4118134 Fastener joint and method thereof Oct-3-1978
A fastener joint assembly and method for joining the crank arm plate to the pivot shaft in a vehicular windshield wiper crank arm assembly. A varying sized opening formed in the crank plate engages a corresponding knurl on the shaft. The opening is formed by providing a punch and an enlarged die member...     
4120083 Method of pipe joining Oct-17-1978
Mechanical pipe joints of the pin and bell variety, and methods of forming same, wherein the ends are pre-formed so as to permit a controlled interference fit upon joining and preferably provide a double seal against both internal and external pressure, the joints being particularly adapted for field-grade...     
4133614 Dauber and method of assembly Jan-9-1979
An improved dauber having a applicator pad which may have its central portion radially tensioned or which pad may have a predetermined degree of looseness. The improved dauber comprises a discrete retaining ring which is forced into a U-shape channel of the dauber along with the peripheral portion of...     
4137622 Method of preparing a support Feb-6-1979
A support and a process for preparing the support are disclosed. The support includes a metal pipe having two ends, a pair of plugs and a covering tube. The plugs are positioned in each end of the metal pipe and are formed from a thermoplastic resin. The plugs each include an outer portion having an...     
4141125 Method of mounting track pin Feb-27-1979
A track pin has the ends thereof mounted in bores defined by respective track links. The ends of the track pin are heated above the critical temperature of the steel making up the track pin, and then quenched, whereby the ends of the track pin have increased in volume to be retained in the bores of the...     
4148109 Track chain bushing face cleaner Apr-10-1979
A tool for cleaning slivers and the like from a surface of a workpiece, such as the bushing of a chain drive track. In one form, the tool includes structure defining a manifold having an opening and arranged to be abutted to the workpiece with the opening juxtaposed to the workpiece surface on which...     
4156793 Ground rod assembly May-29-1979
An improvement for the assembly of ground rods, comprising a fitting having two threaded portions, the first as a guide portion being adapted to receive an unthreaded ground rod and a threaded gripping portion adapted to grip the end of a rod through deformation of the threads when the rod is forceably...     
4157153 Aluminum tube joint design Jun-5-1979
The present invention relates to a tube joint and the method of assembling the joints wherein a male member that is dimensioned to be telescoped in a cup portion of a female tube member is provided with projecting nibs that project radially outwardly from the outer surface of the male member. The telescoping...     
4163521 Fuel injector Aug-7-1979
A fuel injector for an internal combustion engine has an inlet member provided with an enlarged transverse opening which receives a tubular nozzle body having a peripheral shoulder to locate the inlet member longitudinally on the nozzle body. A shallow annular groove is formed around the periphery of...     
4199853 Method of protecting a pipe Apr-29-1980
A C-shaped open base element of sheet metal is used to form a protective sleeve about a pipe mounted in a mounting. The element is bent about the pipe and welded together to form the sleeve. Wedges are used to secure the formed sleeve to the pipe. Shoulders are provided on the sleeve to stiffen the sleeve...     
4200972 Method of manufacturing a solenoid May-6-1980
There is disclosed a solenoid of improved construction and a facile method for its manufacture. The solenoid is intended for use with cyclic voltage supplies and has a fixed-position pole assembly of a pole piece, shading ring and flux ring which is secured in a retaining sleeve. The pole piece has an...     
4213660 Bearing assembly construction Jul-22-1980
In an axle box structure of soft metal such as aluminum alloy including a bearing bore, a sleeve member of hard metal such as iron pressedly engaged within the bearing bore, and a rolling bearing assembled within the sleeve member to support an axle shaft thereon, the sleeve member has on its outer periphery...     
4277091 Coupling for lined pipe Jul-7-1981
Disclosed are coupling joints for interconnecting the ends of metal conduit sections having plastic liners to form a continuously lined conduit and methods for making such joints. The opposed open ends of lined pipe are fitted with flanged end face collars which cover the end faces of the pipe and the...     
4302874 Method of forming pipe union Dec-1-1981
The invention relates to a method for quickly joining pipes by chamfering the end of a thin pipe, forcefully socket jointing this pipe in a pipe of the same diameter, dismantling the two pipes by traction. The two pipes can thereafter be rejoined easily and quickly by socket-jointing.
4310184 Polyolefin pipe connector sleeve Jan-12-1982
A connector sleeve for polyolefin pipe ends for connecting butted pipe ends by a coupling. The connector sleeve is metallic and has a pair of internal circumferential ribs mated in external grooves of the pipe end which is press-fitted within the sleeve in sealing relation. The connector sleeve has a...     
4321068 Non-welded discharge electrode Mar-23-1982
To reduce the cost of construction and avoid alignment problems of its component parts, a non-welded construction of mast discharge electrode, as used in an electro-precipitator, comprises a tube having holes passing transversely therethrough, cross members frictionally secured in said holes, and at...     
4321987 Shock absorber Mar-30-1982
A hydraulic shock absorber is disclosed of the type including a piston slidably mounted in a cylinder, with a metering sleeve defining variable area orifices utilized to produce variable resistance to movement of the piston in the cylinder. The shock absorber structure includes a piston having two piece...     
4347660 Quick change drill assembly machine Sep-7-1982
A method and machine for making a quick change drill assembly that can be snapped into and out of a spring-loaded ball-locking chuck. The assemblies are comprised of standard sized adapters having various sized bores to receive drills having shanks of corresponding interference-fit diameters. Adapters...     
4366785 Tappet with wear resisting insert Jan-4-1983
A tappet (10) for an internal combustion engine having a main body (12) and an annular rim (17) extending therefrom with a ceramic wear resisting insert (20) flush therewith and maintained therein by means of an interference fit. This tappet (10) need have a wear face (14) not as great in diameter as...     
4366947 Calibrated gas-metering apparatus Jan-4-1983
A calibrated gas-metering valve is disclosed which includes a two-part valve body having a gas inlet, a gas outlet, and a metering element therebetween. The metering element has a first and a second hole therein, which first and second hole intersect and together define a passage for gas flow from the...     
4370578 Coil/core assembly with interference fit Jan-25-1983
In an electric stepping motor, a pair of core members are held in intimate contact within the coil by outwardly extending coil-engaging means on the core members being in interference fit with inner turns of wire of the coil. No supplementary fastening means such as adhesive, screws or the like are required...     
4373983 Means for assembling container halves Feb-15-1983
Apparatus and method for assembling a pair of thin-walled metal container counterparts which are brought together axially, are rounded and one inserted into the other substantially without deformation of either of the pair of counterparts so that the inner part is allowed to expand, after insertion,...     
4391029 Catheter hub assembly Jul-5-1983
A catheter is provided with an improved hub assembly. The catheter defines an end which, in turn, defines a relatively enlarged transverse dimension for the catheter wall and a thickened annular lip, when compared with an adjacent portion of the catheter. A catheter hub defines a bore portion, the bore...     
4396327 Screw capture Aug-2-1983
A screw is captured in an assembly of concentric sleeves, the inner one of which has a flange, and an outer workpiece is clamped between the flange and the outer sleeve. The outer workpiece has a sufficiently large, beveled bore to permit radial play of the assembly. The outer sleeve has a threaded inner...     
4397073 Method for assembling container halves Aug-9-1983
Apparatus and method for assembling a pair of thin-walled metal container counterparts which are brought together axially, are rounded and one inserted into the other substantially without deformation of either of the pair of counterparts so that the inner part is allowed to expand, after insertion,...     
4417383 Method of assembling pipe joint Nov-29-1983
In an oil pump inlet screen assembly adapted to be immersed in an oil sump and comprising a filter screen including a housing and a lift pipe adapted to be inserted at one end into an oil pump opening, the improvement wherein the housing and lift pipe are molded integrally of plastic material, and wherein...     
4461595 Wrist pin for reciprocating engines Jul-24-1984
A wrist pin for coupling a connecting rod to a piston in an engine is disclosed. The pin takes the form of a metal tube having a specially designed aperture with an increased surface area in comparison with conventional wrist pins having bores with circular cross section. In the preferred embodiment,...     
4472869 Method of assembling transmission gears Sep-25-1984
The application discloses a method of assembling gears, transmission shafts, fork shift shaft and associated component parts of a 5-speed transmission for a vehicle. The fifth-speed gear and the hub therefor are designed to be installed outside the end of the transmission case which is remote from the...     
4474298 Necktie organizer Oct-2-1984
A necktie organizer of the type adapted to hang over a closet pole in which the tie supporting rod is provided with separaters to define sections in which ties might be organized by color, or the like, and in which the tie support of each of the sections is rotatable independently of the other sections....     
4476642 Digging tooth and holder assembly Oct-16-1984
A digging tooth is removably received within a tooth receiving holder. The holder is attached to a digging apparatus, such as a trencher machine, for example. The holder includes a socket within which a shank of the tooth is removably received. The socket of the holder is in the form of an outwardly...     
4480461 Vibration instrument Nov-6-1984
Apparatus for producing an output signal or indication directly proportional to the density of one or more gases or liquids. A probe holds a vibrating vane immersed in a fluid. The probe is suspended from a pipeline flange by a boss that has upper and lower portions connected together by a thin annular...     
4489874 Pallet manufacturing machine Dec-25-1984
A pallet manufacturing machine and method for joining wooden slats (W) to elongate splines (S) includes spline clamping means (70) mounted on a frame (10). The spline clamping means (70) grip and release the elongate splines (S) so that the lateral edge portions of the splines (S) extend from the clamping...     
4492019 Method of forming an axle Jan-8-1985
A method of forming an axle with hollow spindles which are each capable of supporting a rotatable hub having a wheel and tire mounted thereon. Each hub would include an intermediate cavity which is sealed to define with a wall of the spindle a reservoir for inflation air for the tire. Inflation air is...     
4493862 Ornamental assembly and method Jan-15-1985
An ornamental assembly comprising a supporting core and a plurality of similar radially-extending decorative elements each having an attachment end securable to said core and a decorative end supported a fixed distance from said core. The core contains a sufficient number of uniformly-spaced radially-extending...     
4494286 Connecting rod arrangement Jan-22-1985
Techniques for forming one piece connecting rods for coupling a piston and crankshaft to convert between reciprocating and rotary motion as might be used in an internal combustion engine or piston-type compressor are disclosed wherein the connecting rod is formed of a lightweight material such as aluminum,...     
4494601 Downhole chemical cutting tool Jan-22-1985
A downhole chemical cutting tool having an improved cutting section. The tool comprises an elongated tool body adapted for insertion into a well bore and includes anchoring means actuatable between a deployed position in response to the application of fluid pressure and a retracted position in response...     
4506561 Transmission housing Mar-26-1985
A transmission housing for an automotive vehicle, comprises a bell housing made of light alloy and connected at its front end section to an engine block, and a lip supporting member made of steel and securely attached to bell housing front end section, along the periphery thereof, thereby preventing...     
4508495 Rotary shaft for compressor Apr-2-1985
A rotary shaft for compressor includes a cylindrical shaft body and a cylindrical eccentric member. The shaft body is rotatably arranged in an outer box of the compressor and is connected to an electric motor at one end portion thereof. The eccentric member has a through hole extending along the axis...     
4509878 Windshield wiper transmission Apr-9-1985
A mounting for a windshield wiper pivot shaft on a vehicle cowl panel includes a transmission having a housing defining a base surface and a tower projecting from the base surface, a bore through the tower for rotatably supporting the pivot shaft, a rectangular aperture in the cowl panel having a pivot...     
4520538 Buckle assembly Jun-4-1985
A buckle assembly which comprises a clinched anchor block fixedly connected to a wire and provided with a first interlocking portion at an upper part and a second interlocking portion at a lower part, a buckle base having at least one bottom wall provided with an interlocking portion which is staked...     
4523763 Turbocharger lubricating oil sealing method Jun-18-1985
A lubricating oil sealing apparatus for use of a turbocharger having a compressor wheel for supplying a supercharged air through an intake passage, a turbine wheel driven by a force of an exhaust gas, and a driving shaft connecting the compressor wheel with the turbine wheel. The apparatus is located...     
4525916 Method of coupling coaxial shafts Jul-2-1985
A shaft coupling and method of operating the same serves to establish a positive and reliable frictional connection or interference fit for the operative torque-transmitting interconnection of two shafts. The shaft coupling has an inner sleeve and an outer sleeve coacting with one another by means of...     
4547952 Tube loading apparatus Oct-22-1985
Apparatus for automatically loading a series of hairpin tubes into a magazine that is used to temporarily store the tubes so that they can be later laced into a fin pack. The magazine contains individual open-ended compartments for receiving and storing the tubes therein. The compartments are indexed...     
4550937 Joint for steel tubes Nov-5-1985
Threaded pipe joint in which tip of the male member engages shoulder within the female member and any excess in the outer diameter of the male member over the corresponding inner diameter of the female member is so small that the hoop stress in the female member does not exceed the axial stress therein.
4555832 Buckle assembly Dec-3-1985
Disclosed herein is a buckle assembly suitable for use in a vehicle seat belt. The buckle assembly includes a clinched anchor block fixed on a wire and having an interlocking portion projecting downwardly therefrom, a buckle base having a bottom wall defining a matching interlocking portion, which is...     
4563106 Friction-transmitting shaft/flange connection Jan-7-1986
A friction-transmitting shaft/flange connection has a pressure ring arranged to be seated on a shaft and having a conical ascending surface, and a clamping ring having a pressing surface with which it is clamped on the ascending surface of the pressure ring and an end surface which is simultaneously...     
4567318 RF Shielded electronic component housing Jan-28-1986
An RF shielded housing for a signal distribution system component includes a cast metal base member which forms an interior chamber in which circuit elements of the component are contained. An access aperture is provided on one wall of the housing to facilitate installation of the circuit elements within...     
4574458 Roll-capping machine and method Mar-11-1986
Apparatus and method for inserting a plastic cap into the open end of a roll. Spaced rolls are moved downstream along a continuously moving conveyor and are lifted from the conveyor for capping. A cap gravity falls down a chute to a loading position where it is picked up by a plunger and seated in the...     
4578852 Methods of assembling field subassemblies Apr-1-1986
A field subassembly is assembled by positioning two coil supports adjacent respective core end faces of a ferromagnetic core. The core-engaging surfaces of the coil supports and the core end faces have respective surfaces which are uninterrupted by projections. During the assembly of the field, fasteners...     
4587715 Mounting tool May-13-1986
A mounting tool for fitting machine elements such as rolling bearings on a shaft. Such elements shall be mounted with a desired radial expansion. In order to obtain this expansion the mounting tool incorporates a first driving up sleeve (5), which is intended to co-operate with tapering sleeves (3,4)...     
4594757 Machine for rebuilding drive shafts Jun-17-1986
An elongated work support comprising a table is provided and includes three side-by-side work stations extending longitudinally thereof. A first work station extends centrally along the table and includes a rotary support at one end of the table from which cutting structure is supported for adjustable...     
4597154 Strain transducers Jul-1-1986
A strain transducer of the kind in which a plug is inset into a workpiece surface requires an accurate interface fit with a drilled hole. One method proposes an oversize hole (12) which first receives an annular insert (14) in whose aperture (15) the transducer plug is a precision fit. The outer cylindrical...     
4620647 Lubricating liquid dispenser Nov-4-1986
A liquid dispenser including a hollow plastic adapter defining a cavity extending between axially aligned open ends thereof, the cavity having a uniform cylindrical portion terminating at one of the open ends and a tapered portion joined to the cylindrical portion and tapering inwardly toward and terminating...     
4621718 Ratchet screwdriver Nov-11-1986
A rotary hand tool of the ratchet type and method for assembling same comprises an elongated wide mouth ratchet housing provided with a shaft rotatably mounted therein having a ratchet mechanism operatively associated therewith and a bushing coaxially mounted on the shaft, which bushing interlocks with...     
4627146 Method of producing pipe joints Dec-9-1986
Mechanical pipe joints and methods of forming same, wherein pipe ends are first prestrained into expanded bell and expanded pin shapes and then again strained by interference joining, both prestraining and subsequent straining being under controlled conditions which take maximum advantage of the metallurgical...     
4628583 Strain transducers Dec-16-1986
A strain transducer is adapted to measure strain at a chosen depth below the surface of a workpiece, such as at the neutral axis of a draft bar. The transducer has a hollow cylindrical plug (6) projecting from a co-axial shoulder (7) of slightly larger diameter, the distal end of the plug being force...     
4629354 Tapered shaft retention apparatus Dec-16-1986
A tapered shaft retention apparatus is used with a shaft having a shoulder, a cylindrical surface, a smooth conically tapered surface, and an annular member such as an inner race of a bearing assembly mounted on the cylindrical surface. A sleeve is mounted on the shaft with an adjustment nut screwthreadably...     
4644629 Embroidery framing method Feb-24-1987
An embroidery frame press is provided having a plunger which is operated by a foot pedal for forming frames of cloth or other material for embroidering, stitching or other work. An inner frame is spring mounted on the plunger head which is directed to a base frame support having a base frame positioned...     
4680844 Method of manufacturing a rotor Jul-21-1987
A method of manufacturing a rotor (70) for use in an air motor. A shaft (10) is machined to have bearing surfaces (16 and 18) and adjacent ends (12 and 14), respectively. A working surface (20) with helix grooves (22, 24 and 26) is machined into the shaft (10). A locking surface (34) is machined into...     
4682912 Pipe laying apparatus Jul-28-1987
For laying and joining successive sections of pipe, a vehicle is movable over a course along which the pipe is to be laid. Carried on the vehicle is a crane, the outer end portion of which is movable both vertically and horizontally relative to the course of the pipeline. A controllable grapple mounted...     
4700790 Rotary drill bits Oct-20-1987
A rotary drill bit for use in drilling or coring deep holes in subsurface formations comprises a bit body having a shank for connection to a drill string, a plurality of cutting elements mounted at the surface of the bit body, and a passage in the bit body for supplying drilling fluid to the surface...     
4703675 Adjustable tire chain installer Nov-3-1987
An adjustable U-shaped wire tire chain installer is disclosed comprising an adjustable width, locking base sections and cradles at the ends of the U-shaped legs which permit easy mounting and removal of tire chains, but prevent accidental removal during use. Alternatively adjustable height legs are incorporated.
4705306 Injection line connection Nov-10-1987
An injection line connection for internal combustion engines having for each pressure connection a connecting fitting which hitherto was upset out of the material of the injection line but which is still defective and which can be pressed by a cap nut, by way of a pressure ring, against an internal taper...     
4712711 Container for transporting hazardous chemicals Dec-15-1987
An improved container is provided for transporting hazardous chemicals, and particularly chlorinated organic chemicals, such as benzoyl chloride. The improved container comprises a standard drum generally having a lining of a protective material, a removable cover, a rigid high density polyethylene bottle...     
4735442 Plastic pipe connection Apr-5-1988
A coupling sleeve (3) pushed onto the plastic pipe (1) and provided with barbs (3a) is drawn over a driving shoulder against the connecting piece (2) by a union nut (4). The opened-out pipe end (1a) is clamped between a curved end face of the connecting piece (2) and the coupling sleeve (3). Possible...     
4760752 Plastic deformation relief Aug-2-1988
A part, providing its own plastic deformation method and an exemplary embodiment, a polycarbonate spur gear, is disclosed. In a part having at least one region adapted to be deformed due to press-fit forces acting upon said region deformation is decoupled from proximate critical surfaces by providing...     
4768476 Tappet with ceramic camface Sep-6-1988
A tappet for an internal combustion engine includes a tappet body having a camface at one end thereof, which camface is positioned for contact with a rotating camshaft. The camface is formed essentially of zirconium oxide.
4769892 Pipe joining method Sep-13-1988
There is disclosed a method of joining pipe sections of a given outside diameter, comprising the steps of providing a sleeve of a predetermined length and having an inside diameter slightly less than the outside diameter of the pipe section, forcing the end of one pipe section into one end of the sleeve...     
4783899 Method of mounting heat sinks Nov-15-1988
Disclosed is a compensating roll pin securing a heat sink to a circuit board. The roll pin comprises a deformable body of resilient material, such as annealed spring steel, formed into a generally cylindrical body having first and second end portions separated by a middle portion of enlarged external...     
4827941 Extendable guidewire for cardiovascular procedures May-9-1989
An extendable guidewire system for introducing a dilatation catheter into the cardiovascular system. The guidewire has guidewire and extension sections with a connection therebetween which permits the two sections to be joined together and separated simply by pushing the two sections together and pulling...     
4833875 Roller chain assembling device May-30-1989
An assembling device including a tool to assemble a master link with the ends of a roller chain to form a continuous roller chain such as the drive chain utilized to drive a motorcycle. The device resembles a vise structure and includes a stationary plate or anvil with recesses receiving the headed end...     
4835833 Method of mounting a potentiometer Jun-6-1989
A mechanism for a potentiometer, especially a miniature potentiometer used as a volume control in a hearing aid, onto a face plate includes a metallic band circumferentially surrounding a portion of the housing of the potentiometer. The band includes means for mechanically engaging a surface of an aperture...     
4843707 Cable retention system Jul-4-1989
A method and apparatus for routing, holding, and hiding cables associated with electronics devices. The preferred embodiment is an extrusion for application to a surface of an electronics device or incorporation into the framework thereof defining a groove capable of routing, holding, and hiding the...     
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