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This subclass is indented under the class definition.  Elements comprising a rotatable, oscillatable, or reciprocable machine element (usually a plate or a cylinder) having a surface or a groove formed therein of predetermined contour which will impart a prescribed motion of reciprocation or oscillation such as generally cannot be obtained by gear wheels or link motion, to a follower slidably contacting with such surface or groove.

SEE OR SEARCH CLASS:

123, Internal-Combustion Engines,   subclasses 90.48 through 90.6,for a cam or a follower in a poppet valve operating mechanism.


 
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Patent Number
Title
  Date
3942757 Valve actuating mechanism Mar-9-1976
A spring biased poppet valve has the exposed end of its poppet plunger engaging the underside of a lever, and the poppet and lever are biased upwardly so that a tit on the upperside of the lever engages a cam surface defined on a cam member loosely mounted on a generally horizontal rock shaft. The shaft...     
3946766 Power loom dobby shedding motion Mar-30-1976
This dobby shedding motion for power looms comprises essentially a series of twin cams mounted on a common drive shaft and oscillating arms each provided with a pair of roller followers adapted to co-operate with said cams. Each cam assembly comprises a pair of parallel discs slightly spaced in the axial...     
3963343 Camming systems Jun-15-1976
A cam system to drive an oscillating mirror used to keep the movement images projected onto the moving drum of a xerographic reproduction machine in register. The cam system uses a cam, a cam follower, a drive to move the cam follower to and from a start of scan position while in contact with the cam,...     
3967711 Ratchet type safety claw clutch Jul-6-1976
A safety claw clutch wherein the adjacent end faces of driving and driven rotary clutch elements have alternating claws and recesses and the driven clutch element is biased axially against the driving clutch element by a spring. The bottom surfaces in the recesses of the clutch elements make a first...     
3977692 Extensible support structure Aug-31-1976
An extensible support structure comprising a housing formed of a pair of U-shaped members arranged to form an elongated passageway which telescopically receives a third member characterized by a cam member extending through aligned apertures in the first and second member and slots in the third member,...     
3999277 Method of manufacturing assembly-type camshaft Dec-28-1976
This invention relates to camshafts of the assembly type and the manufacture thereof, in which a shaft part and cam parts are first formed separately, as individual parts of simple configuration. The cam parts are then freely mounted on the shaft part, then indexed to the desired axial and angular positions,...     
4008900 Indexing chuck Feb-22-1977
An indexing chuck assembly to hold a work piece so work may be performed on it in differently rotated positions, as on a lathe. The chuck block is rotated between a lifting arm and a table member, the bottom of the chuck block having a cammed shaft which moves both rotationally and linearly as the chuck...     
4015270 Shock proof event recorder Mar-29-1977
A pivoted pointer or stylus is mounted for actuation by reciprocatory plunger action. It has a stop associated with the plunger to hold the stylus locked in a neutral position until the plunger is actuated. The stylus has a cam action surface for cooperating with another part of the stop after the stop...     
4015901 Photographic film positioning mechanism Apr-5-1977
A positioning mechanism primarily but not exclusively for positioning a microfiche film held in a movable frame relative to a camera lens or to pick-up, transfer, titling and release stations where a high degree of accuracy is required, comprising one or more camways formed helically around a cylindrical...     
4036185 Energy-efficient valve gear Jul-19-1977
A valve train comprises a cylinder head and poppet valve thereon, a valve-actuating rocker platen pivotally mounted on the cylinder head by means of a pivot member so that the platen may pivot between positions on either side of the member, a valve connected to one end of the rocker platen for movement...     
4049102 Clutch shifting mechanism Sep-20-1977
The invention relates to shift control mechanisms for clutches in which a cam and follower are used to control shifting of the clutch.
4052582 Rotary selector switch Oct-4-1977
A rotary selector switch characterized by a rotatable switch actuating unit and two switch structures, the actuating unit having a shaft with multiple sides on which a cam is detachably mounted for operation in a plurality of modes to operate the switch structures in different combinations of open and...     
4097702 Cam actuated switch Jun-27-1978
A cam actuated switch permitting rotation in one direction with snap action and in the other direction without snap action. When the cam is rotated in one direction, the switch contacts are opened rapidly by a substantially radial step on the cam surface and a spring arm which presses a cam follower,...     
4103562 Sewing apparatus Aug-1-1978
In an apparatus for sewing articles, such as sewing a slide fastener chain to an opening in an article, stitching of thread to an article is initiated by a manual control and is terminated by an automatic control in response to the sensing of a terminal point, such as the terminal point of an opening,...     
4130746 Snap-action cam for timer switch Dec-19-1978
A snap-action camming means for use in controlling a double throw electrical switch. The switch may be biased to a first condition and substantially instantaneously thrown to a second operating condition by a spring associated with the cam. A single cam and cam follower are utilized to provide substantially...     
4143905 Motor-vehicle seat hinge Mar-13-1979
A motor-vehicle seat has a seat part and a back part interconnected by means of a hinge having a first hinge element secured to one of these parts and a second hinge element secured to the other part and pivotal on the first element about a horizontal axis. One of these elements is formed as a ring gear...     
4149607 Support link adjustment means Apr-17-1979
A stabilizer for stabilizing a drive carried on a frame. The stabilizer includes a stiffener element which is connected between a portion of the frame and the drive. The stiffener element is connected by means of an eccentric connector which is adjustably secured to provide an effective length of the...     
4182435 Cam actuated disk brake mechanism Jan-8-1980
A simple and compact disk brake mechanism which includes a housing having a pair of slightly separated flat guide walls, a plate-like brake member in the housing which is slideable against the disk brake, and a plate-like camming member slideable in the housing and moveable transverse to the braking...     
4193321 Cam arrangement Mar-18-1980
This invention relates to a cam arrangement which includes a cam means, having a camming surface, and a first end face, and a cam support means, having a first end face. The two end faces are disposed adjacent to and in contact with each other, and means are provided for movably locking the cam means...     
4205634 Variable valve timing mechanism Jun-3-1980
Mechanism for varying the timing of the valves of an internal combustion engine to obtain optimum efficiency and performance of the engine throughout a substantial portion of its operating speed range, wherein cam means for at least each intake valve is mounted on a rotatable cam shaft of the engine....     
4223947 Hinge fittings for vehicle seats Sep-23-1980
Hinge fittings such as disclosed in U.S. Pat. No. 3,999,247 for a vehicle seat having an adjustably tiltable backrest member including pivotally connected hinge members one of which has a toothed sector engaged by a toothed pawl pivotally mounted on the other and held in locked engagement by a cam also...     
4263486 Rotary operator Apr-21-1981
A rotary operator for use with an electrical contact block includes a housing having a base portion and a hollow cylindrical extension having external threads on an end opposite the base portion, and a rotatable stem assembly disposed in the base portion and extension. The stem assembly comprises a control...     
4270906 Belt tensioner construction Jun-2-1981
A belt tensioner for an endless drive belt for vehicle accessories has a shaft which is mounted in a fixed position adjacent the belt. A lever is pivotally mounted on the shaft and has an idler pulley rotatably mounted on an extended end of the lever. The pulley is movable into tensioning engagement...     
4283607 Cam control mechanism Aug-11-1981
A cam operated control mechanism wherein a cam follower is caused to move from a first position to a second position by a biasing spring upon completion of a preselected amount of relative movement between the cam follower and cooperating cam. The control mechanism includes a second structure for effecting...     
4300525 Safe knob Nov-17-1981
A control knob for turning on or off a burner of a kitchen gas stove, the knob including a cam-faced spur on a side of the knob shank which travels behind a stationary stop mounted on the stove when the knob is being turned to shut off the gas, the stop preventing the knob to be turned on again unless...     
4317355 Forging of a camshaft Mar-2-1982
Forging of a camshaft which is formed integrally with plane cams arranged longitudinally thereof. A blank for the camshaft has its cam-forming portion heated to different temperatures with the heating temperature decreasing from the axially central position towards the opposite ends. Pressure is applied...     
4355545 Controlled single-operation cam mechanism Oct-26-1982
A single-operation cam mechanism includes a cam body with a cam surface extending along the body from an entrance location to an exit location. A cam follower is retained in a waiting position adjacent a part of the cam body at which the exit location is found. When the cam follower is moved free of...     
4377953 Indexing apparatus Mar-29-1983
An indexing apparatus (10) is disclosed which is designed for use with various types of work transfer equipment and is operative to provide smooth rapid jerk-free acceleration and deceleration whereby workpieces may be smoothly and rapidly transferred between operating stations. The indexing apparatus...     
4382390 Camshaft for reciprocable piston engines May-10-1983
A camshaft with cams and bearings for reciprocable piston engines including a hollow shaft having the cams and bearings designed as cam rings and bearing rings and fastened to the hollow shaft.
4406173 Control device for reciprocating member Sep-27-1983
The invention relates to a reciprocating member. The movable member is integral with one of the ends of a spring plate, whose other end is secured to a fixed frame, the said spring plate being held under pressure by way of a support member such as a cam driven in rotation. The invention finds an application...     
4416165 Stepping gear Nov-22-1983
A stepping gear includes an output member attached to a wheel which is provided with a number of rollers on both faces thereof. In driving contact with these rollers is a pair of cam members having contours which allow for driving in the forward direction as well as a standstill or dwell phase. In addition,...     
4432251 Lost motion transmission control cams Feb-21-1984
A manual shift transmission having multiple input and output portions is provided with a control having input and output shift rails. A laterally movable control shaft extends axially through cutouts in respective shift rails and carries cams adapted to cooperate with cam follower surfaces on corresponding...     
4432310 Parallel cylinder internal combustion engine Feb-21-1984
The engine disclosed herein comprises a number of pairs of pistons, the two pistons in each pair acting in unison and the number of pairs being arranged parallel to each other and said pistons also being positioned parallel to and in a circle around the mainshaft which has a cam lobe located at a convenient...     
4450609 Method of installing a camshaft May-29-1984
An improved camshaft having a plurality of journals with a removable sleeve positioned between at least one set of adjacent camshaft bearing journals. The sleeve has an outer surface which does not extend past the outer surface of the two adjacent journals and presents a continuous cylinder spanning...     
4452103 Twin cam index drive Jun-5-1984
An improved dual cam indexing drive assembly (10) is disclosed which is well suited for use in driving various types of rotational, linear, and/or reciprocating work transfer apparatus (12). The drive system (10) utilizes primary and secondary rotatable cams (32, 34) supported on and driven by a common...     
4463620 Infinitely variable traction roller transmission Aug-7-1984
In a traction roller transmission having toric discs mounted opposite each other on its input and output shafts motion transmitting traction rollers are engaged between the toric discs and supported by pivotal roller support structures permitting adjustment of the ratio of motion transmission between...     
4464099 Fuel injection pumping apparatus Aug-7-1984
A fuel injection pumping apparatus for supplying fuel to an internal combustion engine comprises a reciprocable plunger, a roller forming part of a tappet assembly and a cam for actuating the roller and plunger. The cam is formed on the outer peripheral surface of a cup-shaped member, which is supported...     
4466456 Programmable multiport switch Aug-21-1984
A housing (28) has parallel passageways (30). Each passageway (30) has an inlet port (34) and an outlet port (32). A valve stem (26) with a head (36) reciprocates in each passageway (30) to control the outlet port (32). A flat plate (22) rotates perpendicularly to the stems (26) and has flat surface...     
4494397 Portable sheet bending brake Jan-22-1985
A sheet bending brake comprising a plurality of C-shaped frame members that support a first member. The first member has a clamping surface. A second member is hinged to the first member and has a bending surface. A plurality of bars are pivoted to the frame members and support an anvil member that extends...     
4523889 Apparatus for automatically delivering workpiece Jun-18-1985
An automatic workpiece delivery apparatus includes a support member mounted on a body for vertical movement. A slide bar is supported by the support member for horizontal movement and has a pair of workpiece holders at its opposite ends. First and second cams are mounted on a common cam shaft. First...     
4540252 Side-mirror driving apparatus Sep-10-1985
A side mirror driving apparatus having a side mirror swingably attached to a housing and a driving apparatus supported by the housing. The driving apparatus includes a gear driven by an electric motor and the mirror is operatively linked with the gear by means of a lift lever so that the mirror is inclined...     
4595556 Method for manufacturing camshaft Jun-17-1986
A composite camshaft having a plurality of ferrous fitting members, such as cam lobes and journals, firmly bonded to a steel shaft by sintering in the presence of a liquid phase. The fitting members are fabricated as a green compact from metal powders and pre-sintered to axially shrink the compact by...     
4597365 Camshaft assembly and method Jul-1-1986
A camshaft for an internal combustion engine or the like is formed of an expandable steel tube and individual preferably hardenable cam and journal elements fixed together by a mechanical expansion of the tube by a mandrel or other device. Material selection and processes for low cost manufacture are...     
4616389 Manufacture of camshafts Oct-14-1986
A camshaft is prepared from separately formed cams and a shaft. The cams may for example be formed by sintering. The cams are provided with holes which are under-sized and are provided with serrations. They are located on a correspondingly shaped dummy shaft in their required relative orientations and...     
4624597 Flanged bushing mounting adaptor Nov-25-1986
A flanged bushing mounting adaptor for use in mounting a flanged bushing in the hub of a shaft-mountable structure, the hub having a tapered bore with recesses formed therein, and the bushing having a tapered barrel and a flange with threaded and unthreaded holes therein. The adaptor has a tapered outer...     
4630493 Cam arrangement Dec-23-1986
A cam arrangement comprises a solid cam mounted on an input shaft for rotation and having a plurality of ribs formed on a circumferential surface thereof, the solid cam being formed to a non-circular configuration at an outer periphery of the ribs, the ribs including a linear portion and an inclined...     
4630498 Laminated wheel assembly Dec-23-1986
A wheel assembly includes a cam and a cam gear mounted on a camshaft of an internal combustion engine. The cam gear is constructed of a laminated stack of flat plate members which are disposed in abutting relationship to one another to form a plurality of axially spaced and radially extending interfaces....     
4638683 Camshaft for engine Jan-27-1987
A camshaft having a plurality of cams disposed on a metal shaft in spaced-apart relation with each other in an axial direction of the shaft, comprising at least one ceramic cam portion which is made of a ceramic material, and which includes at least one of the cams. Each of the at least one ceramic cam...     
4641866 Lever handle door trim Feb-10-1987
The invention comprises a lever handle having a handle-shaft receiving cam which is used to displace a slider to effect the retraction of a latchbolt. A yoke is positioned between the cam and slider to accommodate, adjustably, for handle droop. The yoke has a tapped hole and receives a machine screw...     
4652724 Method of producing a camshaft Mar-24-1987
A method of producing a cast iron camshaft including the steps of applying a high-density energy source, such as a TIG arc, a laser beam, and an electron beam over the entire sliding surface of a cam to melt the surface portion and cooling the cam by dissipating the localized heat through the camshaft...     
4660269 Process for producing built-up camshafts Apr-28-1987
A built-up camshaft is fabricated by fitting cam disks on a hollow shaft, fitting shaft end caps over the ends of the hollow shaft, placing the resulting structure in a die, compressing the hollow shaft in the axial direction thereof inwardly from the opposite ends thereof thereby to carry out swaging...     
4665650 Control gate assembly May-19-1987
This invention is directed to a gate assembly. It is possible to open a gate and close the gate from a remote position such as being in an automotive vehicle. The gate assembly comprises a tubular support and guide, an inner rotatable guide follower in the tubular support and guide. An outer rotatable...     
4665766 Shaft member May-19-1987
A shaft-end constituent member (14) of a material which is different from that of a shaft (12) is firmly attached to one end of the shaft (12). The shaft-end constituent member (14) is provided with an axial projection (15) corresponding to a recess (13) formed in the outer peripheral surface of the...     
4667531 Cam mechanism May-26-1987
A cam mechanism includes a continuous rotary shaft connected to a drive source, a cam fixed on the rotary shaft to convert each continuous rotation motion of the rotary shaft to a compound horizontal and vertical motion, and an output member coupled with the cam. The cam comprises a single piece, disc-shaped...     
4681069 Overhead camshaft engine Jul-21-1987
Camshafts are arranged so close as to lap in part over head bolts and formed with cuts at portions where they lap over the head bolts.
4708029 Camshaft Nov-24-1987
A fabricated camshaft having individual lobes mounted on tubular collars that are in turn mounted on an internal tubular member that is expanded between the collars to form bearing journals for the camshaft.
4730511 Valve actuating mechanism Mar-15-1988
A mechanism for actuating a non-slidable disk type valve, which comprises a hollow cam body having a specific guide groove and axially slidable without rotation within a stationary casing, a cam follower relatively movably engaged with the guide groove and carried on a rear end of an output shaft which...     
4749182 Variable resistance aerobic exercise machine Jun-7-1988
An exercise apparatus for the upper extremities and upper torso. The apparatus includes a pair of handles joined to a crank interconnected by a sprocket chain to a flywheel against which a cam actuated brake is adjustably engaged. The cam actuated brake is controlled by either foot thereby eliminating...     
4768396 Rotary cam assembly Sep-6-1988
A rotary cam assembly includes a support shaft provided on a fixed bracket, a cam follower supported on the bracket so as to be slidably displaceable, a plate cam the outer circumferential portion of which has a cam surface contacted by the cam follower, the plate cam being freely rotatably mounted on...     
4777842 Structure of camshaft bearing Oct-18-1988
An oil groove capable of holding oil is formed on the inside surface of a camshaft bearing consisting of a cylinder head and a cam cap, at a position where the valve spring force acts. Oil is supplied to the oil groove from a cavity in a camshaft via an orifice provided in the camshaft. Since the part...     
4779480 Multi ratio accelerator cable mechanism Oct-25-1988
A cam and cam follower mechanism for connecting a vehicle accelerator pedal to the throttle body throttle valve for varying rates of movement of the throttle valve, including a washer-like cam operatively connected to the vehicle accelerator pedal and having an internal cam surface adopted to be engaged...     
4781076 Camshaft for reciprocating piston engines Nov-1-1988
Axially spaced cams and bearing rings mounted on a tube are permanently secured to the tube by circumferentially spaced projections on the tube extending into grooves formed on the inside surfaces of the cams and bearing rings.
4782782 Transmission position indicator mechanism Nov-8-1988
A transmission shift position indicator has a rotatable drum with a cam track formed in the outer periphery thereof. A cam follower is disposed in the cam track and operatively connected to a housing through a base portion for linear movement thereon in response to rotation of the drum. The base portion...     
4790271 Auto-decompression system for engines Dec-13-1988
A valve control device including a decompression cam. The decompression cam fits loosely on the camshaft adjacent to a valve motion cam. The decompression cam may be selectively moved and retained so as to extend beyond the valve motion cam to control the associated cam follower during the compression...     
4802572 Aircraft cargo roller system Feb-7-1989
A cargo roller system (10) having drive rollers (13) and idler rollers (19) mounted in a tray (14) and selectively engageable with a motor (30) through a gear train (44). The motor (30) engages the gear train (44) through an idler gear (48) mounted in a motor mount (32) and a driven gear (50) mounted...     
4807580 Trigger mechanism for engines Feb-28-1989
The invention is directed to a trigger mechanism for gasoline operated equipment where a trigger is operatively connected to a throttle by a lever. The mechanism includes latch means which regulates the speed of the engine, and an idle setting means. The latch means also stops or shuts the engine down...     
4809562 Camshaft manufacture Mar-7-1989
A camshaft assembly is made by inserting a hollow tube into cams and journals in close fitting relationship. A plug is forced through the tube to a predetermined position. The cams and journals have circular shaped openings with circumferentially spaced apart axially extending grooves. The plug has circumferentially...     
4819592 Engine balancer Apr-11-1989
A balancer mass is reciprocated linearly in the plane of the piston/cylinders of a four cylinder in-line engine by a pair of cams mounted on the crankshaft for rotation therewith. The second order vibrations can be substantially eliminated either by mounting a single balancer of the invention at the...     
4829951 Injection pump camshaft May-16-1989
A camshaft for a fuel injection pump of internal combustion engines, having reinforcements formed concentrically or following parallel to the cam outline and located adjacent the cams, and/or these and the camshaft bearings having a diameter enlarged in respect to the shaft diameter.
4867004 Small-diameter and long-length expansion sensor Sep-19-1989
A cylindrical sensor for the sectional expansion of hollow shafts by exerting fluid pressure includes a sensor body to be disposed in a hollow shaft. The sensor body has an end and includes a sensor surface having sections corresponding to sections of the hollow shaft to be expanded. The sensor body...     
4870872 Cam mechanisms Oct-3-1989
A cam mechanism includes a cam shaft, a cam mounted on said cam shaft, the cam being capable of limited relative rotation with respect to the cam shaft and damping means being provided to control the extent of rotation of the cam relative to the cam shaft as a function of the speed of rotation of the...     
4876916 Cast shafts, particularly camshafts Oct-31-1989
An elongated generally cylindrical iron shaft is cast as a single piece. The shaft has a longitudinal axis and has a centrally disposed longitudinal hollow channel extending completely therethrough along the axis. The shaft has a plurality of transverse channels extending outwardly from the longitudinal...     
4886022 Engine valve driving apparatus Dec-12-1989
Engine valve driving apparatus having a camshaft and a radially movable cam supported on the camshaft. A support is fixed to the camshaft. Both the movable cam and the fixed support are formed with holes, whose axes coincide with each other when the movable cam protrudes at its maximum outward position....     
4895045 Differential camshaft Jan-23-1990
A camshaft arrangement including a pair of cams (7, 8 ) mounted on the same camshaft (1) with at least one of the cams rotatable relative to the camshaft (17) and with the cams (7, 8) maintained at a given axial spacing on the camshaft (1), a differential mechanism (a, b, c, d) coupling the two cams...     
4905538 Camshaft Mar-6-1990
A camshaft of a valve operating system for an internal combustion engine, is formed of iron-based alloy casting and has cam sections, each of which is in slidable contact with a heat resistant tip of a rocker arm. The cam section is formed at its surface portion with a surface hardened layer formed of...     
4905800 S-cam for drum brake Mar-6-1990
An improved S-cam (100) for expanding internal shoe (20) drum brakes (10) is provided. The working surfaces (116) of the S-cam are provided at their ends with an extremely high rise/low mechanical advantage portion (122) providing a warning ramp to indicate to the operator that brake relining is required...     
4927688 Cast-iron element May-22-1990
A cast-iron element with a non-iron interior area utilizes a molding core formed of a glass material, which may be tubular or solid and may, as desired, be entirely enclosed within the casting.
4934204 Force translating and amplifying linkage Jun-19-1990
A new compact linkage for translating rotary input force to amplified linear output force includes two force applying members which move apart relatively during operation of the linkage. A strut is pivotally attached at one end to each of the force applying members; the struts extend towards each other...     
4936630 Chair adjuster Jun-26-1990
An improved mechanism for adjusting the angle of inclination of the back-rest of a seat includes an elongated support arm for the back-rest, pivoted in the region of its lower end upon a transverse, generally horizontal pivot, a pair of complementary cams which are in relatively fixed relationship with...     
4947547 Method of manufacturing a camshaft Aug-14-1990
A camshaft for controlling valves in internal combustion engines includes a shaft and at least one cam slid onto and connected to the shaft. The cam has a recess for receiving the shaft. The recess has at least one radially inwardly directed projection which engages a corresponding groove in the shaft....     
4949683 Tubular camshaft with lubricant passages Aug-21-1990
A camshaft comprises a hollow tubular shaft (1) and an inner member (10) which may be in the form of a tube. The inner member is inserted within the tubular shaft so that a lubricant guiding space is defined between the tubular shaft and the inner member. The lubricant guiding space is connectable via...     
4969262 Method of making camshaft Nov-13-1990
A method of making a camshaft of the type having a cam piece composed of outer and inner layers which comprises the steps of molding a green cam piece in a manner that the outer and inner layers are respectively made from powders of outer-layer and inner-layer forming materials, fitting the green cam...     
4977793 Plastic stabilized composite camshaft Dec-18-1990
A plastic stabilized composite camshaft and method. In one version, a hollow polished tube is positioned within appropriately aligned and fixtured annular cam elements having interior protrusions that increase in size toward the tube axis and a flowable, hardenable material is injected through the tube...     
4995353 Valve train with lash/compliance compensation Feb-26-1991
Modified cams and cam followers are designed to remove lash arising from clearances and compliance in valve train components. The cam followers have a crowned cam contacting surface having a crest, and the cams have a relief formed in a part of the base circle opposite the lift profile. The relief extends...     
4996768 Camshaft installation method Mar-5-1991
A method for guiding a camshaft into place in an engine includes using a tool which includes a cylindrical sleeve or body having a smooth outer surface of slightly smaller diameter or no larger than the bearing surfaces of the camshaft. An alignment pin having a conical shaped end extends through a central...     
4998955 Assembled camshaft Mar-12-1991
A camshaft having a steel shaft and cam pieces made from a sintering iron-base alloy material and fixed to the shaft by sintering. Prior to sintering, the green or pre-sintered cam piece is fitted on the shaft and positioned by a steel positioning pin, which is inserted both into a pin-receiving hole...     
5009123 Camshaft Apr-23-1991
A camshaft comprising a steel shaft and a plurality of cam pieces fitted on the shaft. The cam piece is made from a sintering alloy material and bonded to the shaft by sintering. The shaft has pin-receiving holes perpendicular to the axis of the shaft. The cam piece is formed on its side surface with...     
5016871 Exercise machine resistance controller May-21-1991
The speed of operating structure of an exercise machine is sensed and rotates a worm gear interconnected to a reduction gear assembly to rotate a driver at a preselected rate. The driver is interconnected to drive a cam surface upon which a cam follower rides to in turn operate a pivoted lever. The lever...     
5031263 Drain cleaning machine Jul-16-1991
A drain cleaning machine is disclosed which is of the character comprising a frame supporting a rotatable drum which is driven by a motor through an endless belt. The drum contains a flexible drain cleaning snake which is rotatable with the drum and axially displaceable into and out of the drum, and...     
5040294 Process for producing a camshaft Aug-20-1991
In a process for producing a camshaft provided with bearings and cams from a pipe or from a blank having an initial oval cam shape, the configuration of the camshaft with the cams and the bearings is molded into the pipe or hollow blank by swaging and circular kneading with tool segments. In a first...     
5040500 Torque pulse compensated camshaft Aug-20-1991
A torque compensated camshaft for operating a valve of each of a plurality of valves of an internal combustion engine, the camshaft having an elongate shaftlike portion and an engine valve operating cam for each of the valves, the valve operating cams being spaced apart from one another along the shaftlike...     
5044224 Camshaft Sep-3-1991
A camshaft comprising a steel shaft and a plurality of cam pieces fitted on the shaft. The cam piece is made from a sintering alloy material and bonded to the shaft by sintering. The shaft has pin-receiving holes perpendicular to the axis of the shift. The cam piece is formed on its side surface with...     
5047682 Permanent magnet excited electric motor Sep-10-1991
A permanent magnet excited electric motor is provided with a low circumferential hump-like protrusion on the face of each electromagnetic pole to partially decrease the air gap between the stator and rotor and act as a so-called magnetic cam to exert a force on the rotor to smooth an otherwise uneven...     
5048474 Valve train for automotive engine Sep-17-1991
In a valve train for an I.C. engine, a cam shaft has cams formed with compound curvatures which allow the valve timing to be altered while the engine is operating, to suit the engine driving conditions by shifting the cam shaft along its axis. To reduce the force necessary to shift the cam shaft along...     
5052845 Multi-layer shaft Oct-1-1991
For weight saving purposes and to make optimum use of the material there is provided a hollow shaft, to which drive elements such cams or end flanges are attached preferably by expanding the shaft in portions, made up of at least two layers including an outer layer, preferably produced of a material...     
5054334 Assembled driveshaft Oct-8-1991
The invention relates to an assembled driveshaft and a process for production thereof in the case of which several tubular pieces and/or sleeves and a driving element to be attached thereon are inserted into each other and where, for forming the stepped hollow shaft and for fixing the driving element,...     
5064726 Hollow composite member Nov-12-1991
A hollow composite member for accommodating torques and/or tensile, compressive or bending forces in the case of which a circumferentially uniform tensile prestress is generated in an outer material layer essentially along its entire axial length by inner supporting members accommodating pressure in...     
5067369 Ceramic camshaft Nov-26-1991
A camshaft structure has shaft portions made of metal and which are axially aligned with each other. Ceramic cam portions are axially sandwiched between adjacent shaft portions. A thin layer of brazing alloy is arranged between adjacent surfaces of the shaft portions and cam portions so as to integrally...     
5076597 Four-wheel steering system for vehicle Dec-31-1991
The present invention provides a four-wheel steering system for a vehicle comprising a front wheel steering mechanism and a rear wheel steering mechanism. The rear wheel steering mechanism is capable of pivoting the rear wheels in a same phase direction relative to the front wheels when the steering...     
5085099 Cam lobe having orientating means Feb-4-1992
A cam shaft assembly (10) constructed from a plurality of lobes (14) spaced along the longitudinal axis of a tubular shaft member (12). Each lobe (14) is defined by a body portion (16) and a camming portion (20). The lobes (14) define a pair of oppositely facing radially extending side surface (22) which...     
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