Meshing assisters

Shiftable gearing including spring loaded means and blocker means for effecting engagement of clutch teeth. In a transmission having a main shaft and at least one countershaft, and including pairs of shiftable gears arranged on and cooperatively between said shafts, there are provided spring loaded clutches...     

An improved transmission shift mechanism which incorporates both a combined synchronizing clutch and a positive engagement system for coupling and decoupling gear elements within a transmission frame. The synchronizing clutch mechanism has a plurality of circumferentially spaced latch members which are...     

A countershaft type power transmission comprises a select shaft operatively connected with a select motor and a shift shaft operatively connected with a shift motor. The select motor and shift motor actuate the select shaft and shift shaft in response to various vehicle operating conditions, including...     

Improved blocker and jaw clutch means for shiftable change speed gearing is provided for effecting engagement of the low speed gearing of a simple transmission, or the low speed gearing of the main transmission section of a splitter type compound transmission. A transmission having an input shaft driven...     

A dual speed gear case mechanism adapted to drive the rotor of an axial flow combine and which receives its power from the combine engine. The mechanism includes a housing which is tiltably mounted on the chassis of the combine and has a rearwardly projecting input shaft which carries a variable diameter...     

A transmission having four forward gearsets and reverse gearing on one side of the forward gearsets. First and second shift members are mounted on the other side of the forward gearing for axial shifting movement to selectively engage the forward gearsets. A shift shaft having a shift lever is mounted...     

A speed shift indicating device is mounted in the driver compartment of a motor vehicle and is connected to the ignition system by a single wire which extends from the driver compartment through the firewall and into the engine compartment. The single wire derives from the ignition system an electrical...     

An improved reversible transmission employing a planetary gear train between an input and output shaft so that when the carrier of the planetary gear train is free to rotate and the carrier is coupled to the output shaft the input and output shafts rotate in the same direction and when the carrier is...     

An improved, blocked, change gear transmission having an input shaft driven by a prime mover through a normally engaged, selectively disengageable, master friction clutch is provided with means for decelerating and positively reverse rotating the transmission input shaft. The means for decelerating and...     

A synchromesh gear for a speed-change gear drive including a conically-shaped friction surface in the form of sharp-edged teeth each supporting a friction surface, which are separated from each other by oil evacuating grooves, and which is adapted for frictional mating engagement with a smooth opposite...     

Shift control apparatus for a multiple speed sliding gear manual transmission is characterized by the provision of a main shift rail which is rotatable for crossover selection and axially slidable for engagement of the selected gear. An auxiliary shift rail is axially slidable for engagement of an auxiliary...     

A power transmission system comprises a synchronous main toothed clutch 20 and a subsidiary toothed clutch 21 arranged in parallel in main and subsidiary power paths 6, 7 respectively between an input shaft 1 and an output shaft 2. When the main clutch 20 is engaged this causes engagement of the subsidiary...     

Disclosed is a power shift transmission having torque converter, an input shaft driven by the torque converter, a countershaft in continuous driving relation with the input shaft, an output shaft having first, second, and third speed ratios journaled thereon and driven via the countershaft, a reverse...     

Disclosed is a power shift transmission having torque converter, an input shaft driven by the torque converter, a countershaft in continuous driving relation with the input shaft, an output shaft having first, second, and third speed ratios journaled thereon and driven via the countershaft, a reverse...     

Disclosed is a power shift transmission having torque converter, an input shaft driven by the torque converter, a countershaft in continuous driving relation with the input shaft, an output shaft having first, second, and third speed ratios journaled thereon and driven via the countershaft, a reverse...     

A gearbox for motor vehicles having an input shaft with an input gear; a countershaft with a drive gear for the countershaft, said driving gear engaging the input gear; a transmission main shaft with a number of gears depending on the number of gear ratios, each of said gears being in driving engagement...     

An improved shiftable change speed transmission is provided. The improved transmission is preferably provided with at least one countershaft having countershaft gears thereon disposed in meshing engagement with main shaft gears encircling the transmission main shaft. Gears are selectively axially movable...     

The present invention relates to an automotive transmission for an industrial vehicle. The main shaft of the transmission gear is hollow and internally splined to be slidable along and synchronously rotatable with an externally splined input shaft. Upon removal of a snap ring which holds at least two...     

A tractor transmission is synchronized between four different speeds in each of two different high and low ranges and a reverse range. A top shaft coupled to be driven by the tractor engine has four different gears which are concentrically and rotatably spaced along the length thereof in constant mesh...     

Disclosed is a power shift transmission having torque converter, an input shaft driven by the torque converter, a countershaft in continuous driving relation with the input shaft, an output shaft having first, second, and third speed ratios journaled thereon and driven via the countershaft, a reverse...     

A power distributing device for four-wheel-drive vehicle including an input shaft, a first output shaft for transmitting power to rear wheels, a second output shaft for transmitting power to front wheels, a plane planetary gear set, a power train changing means and a synchronizing means. The plane planetary...     

A transmission for an automotive vehicle, comprising a main shaft, a synchrohub fixedly supported by said main shaft, a forward gear rotatably supported by said main shaft next to one side of said synchrohub, a reverse gear rotatably supported by said main shaft next to the other side of said synchrohub,...     

A synchronized dog clutch according to the invention comprises a clutch shaft, a coupling sleeve splined to the clutch shaft and having dog claws at its end, a synchronizer ring slidably fitted to outer periphery of the coupling sleeve, said synchronizer ring having a conical face for frictional engagement...     

In a synchronizer for vehicle gearboxes, a synchronizing ring has an external synchronizing cone which cooperates with an internal synchronizing cone on a shifting sleeve. The ring cone is made on an axial flange which extends from a radial web and is directed towards the shifting sleeve. An annular...     

The invention relates to a variable-speed transmission for motor cars, in particular a manual gear-box in the form of a synchronized lay-shaft transmission having several forward speeds and one reverse motion, in which the gears of the reverse motion (11, 12) are also constantly meshing and in which...     

A gear clutch for selective locking engagement of the coupling element with a corresponding gear comprises a rocker reciprocably pivoting on a coupling element and movable therewith. The rocker alternately interlocks with related gears via shifting and spring means operatively interconnected therewith.

A transmission ratio selecting mechanism including a ratio selector means (typically a hand lever), first and second ratio coupling members (36b,37 ) movable to select a number of ratios in the forward and reverse drive directions of an associated transmission, and linkage means (65,63,54,61,62,59,57,60,65,63,64,70,71,68,67,69)...     

A driving gear having external teeth in mesh with internal teeth of a sliding sleeve carries several peripherally spaced spring-loaded detent members which are pivotable in respective axial planes and extend radially into an inner peripheral groove of the sleeve in a decoupling position of the latter,...     

A double acting synchronizer clutch (20) is disclosed with sheet metal spring pins (34). The spring pins are disposed at their ends in arcuate recesses in friction rings (28-30). Each spring pin (34) includes a unitary member (36) having split end rings (36a and 36b) and a plurality of spring leafs (36c)...     

A double acting synchronizer clutch (20) is disclosed with sheet metal spring pins (34). The spring pins are disposed at their ends in arcuate recesses in friction rings (28-30). Each spring pin (34) includes a unitary member (36) having split end rings (36a and 36b) and a plurality of spring leafs (36c)...     

A synchronizing device for a transmission including a shift interlocking mechanism having play of a predetermined distance wherein adjacent fork shafts are simultaneously actuated when reverse shift is effected, so that synchronization with the rotation of an output shaft can be obtained by using a synchronizing...     

A driving gear having external teeth in mesh with internal teeth of a sliding sleeve, adapted to be axially shifted into meshing engagement with external teeth of a driven gear coaxially adjoining the driving gear, carries several peripherally spaced rockers which project radially into axially extending...     

A motor vehicle transmission comprising a speed and range sections connected via a master clutch, provides all speed selections on-the-go, i.e. without stopping the motor vehicle. An engine driven input shaft extending through the speed transmission section carries a pair of drive clutch packs for power...     

A variable mechanical advantage/variable effective length torque arm assembly (100) for a synchronized transmission is provided. The torque arm assembly comprises a substantially rigid body (102) fixedly mounted to a shift shaft (36) at one end (104) thereof for axial and rotational movement therewith....     

A synchromesh mechanism is provided with a synchronizing ring unit that consists of a pusher ring, semicircular lever member and friction ring. The lever member exerts a force that is multiplied by the effect of leverage against the friction ring.

An automatic mechanical change gear transmission system (10) is provided. The transmisssion (12) is a splitter type comprising a main section (48) connected in series with a blocked splitter type auxiliary section (50). The auxiliary section blockers (172) and clutch members (164) are provided with ramps...     

A driving gear having external teeth in mesh with internal teeth of a sliding sleeve, adapted to be axially shifted into meshing engagement with external teeth of a driven gear coaxially adjoining the driving gear, carries several peripherally spaced, universally jointed rockers which project radially...     

A gearshift apparatus for an automobile with an electromagnetic powder clutch and a transmission having four forward-gear trains. The apparatus comprises a first synchronizing device for selectively engaging a second speed gear and a fourth speed gear with an output shaft of the transmission, a second...     

A transmission synchronizer includes a strut and blocker ring engagement system wherein the strut is retained by the blocker rings in all of its axial positions against centrifugal and spring forces on the strut. The slots in each blocker ring are fully enclosed, and thus are disposed for total containment...     

A synchronizer of transmission for vehicles such as an automobile has a double-mesh prevention member for permitting only one fork shaft to engage with a shift-and-select lever shaft. The gap in the engaging portion between the double-mesh prevention member and one of the forward fork shafts is selected...     

A mechanical selector device for a gear changing gearbox of a motor vehicle with a non-synchronized reverse gear has an axially displaceable idler gear, which is connected by means of a selector unit with a selector sliding sleeve, by means of whose axial displacement first a synchronizer clutch and...     

A single piece spring member which replaces the normal insert and spread spring ring arrangements, under the influence of the coupling sleeve moving toward a gear, biases the baulk ring against the gear to induce an initial stage of synchronization, until the coupling sleeve splines slip past the spring,...     

A power transmission combines a continuously variable belt drive in series relation with a multi-ratio gear arrangement between the transmission input and output shafts. The gear arrangement can be selectively changed between low and high ratios. In each gear ratio, the belt drive ratio is controlled...     

A power synchronizer assembly (10) for selectively increasing the rotational speed of a mechanical change gear transmission (12) input shaft (22), main section countershaft (58) and ratio gears (82, 84, 86, and 88) independently of the rotational speed of the drive engine (14) is provided. The power...     

A synchronizer spring pin provides an elongated single-piece S-shaped body disposed for installation in axially aligned apertures of a pair of opposed blocker rings. In a preferred form, the spring pin is positioned within a double-acting synchronizer clutch and defines a body of spring steel, the body...     

In a gear synchronizer assembly of the well-known type, an internal splined portion of a clutch sleeve includes first internal splines engageable with external splines of a synchronizer ring and second internal splines engageable with external splines of a spline piece. The first internal splines of...     

A drive apparatus for a work vehicle such as a tractor is disclosed, with an engine, an input shaft coupled to the engine, a change-speed mechanism, a hydraulic clutch, an auxiliary change-speed mechanism and a reduction mechanism housed in a common transmission case. Power from the reduction mechanism...     

A semi-automatic mechanical change gear transmission system (11) including a manually operated non-synchronized mechanical change gear transmission (12), a plurality of two-position sensors (278, 280, 282, 284, 286 and 290) cooperating with sensor ramps (146, 148, 150, 152, 154 and 156) manually provided...     

A blocked jaw clutch assembly (156) of the type having sensor unblocking ramps (176, 178, 180, 182) is provided with structure tending to cause the blocking torque friction surface (188) carried by the blocker ring (124) to frictionally engage the blocking torque friction member (190) carried by the...     

The invention relates to a transmission synchronizing device. A locating sleeve for the engaging sleeve is fixed on the main shaft. The locating sleeve is provided with radial bores, each housing a helical spring and a cylindrical element with a plate having a V-shaped cam surface for a roller. In the...     

A compound change gear semi-blocked transmission (10) of the splitter type is provided. The transmission comprises a multi-speed main section (12) connected in series with an multi-speed auxiliary section (14). The main section utilizes manually engaged, non-blocked, nonsynchronized jaw clutch assemblies...     

A blocked jaw clutch assembly (156) having a second positive stop member (200,202) to limit axial movement of a second jaw clutch member (116) away from the first stop member (134) is provided. During initiation of a shifting operation, if the first (164) and second (116) jaw clutch members are not at...     

An improved strutless synchronizer has an annular spring interposed between an internally splined sleeve, mounted for axial sliding movement on a main shaft, and an associated blocking ring. Selected ones of the sleeve splines are formed at the extremities with radially inwardly extending teeth. Each...     

A gear-change apparatus for a vehicle transmission having multiple forward speed gear trains and one reverse gear train that is established by a slide meshing action of a reverse idler gear. A cam mechanism between the reverse gear shift fork and one of the forward gear shift forks causes that forward...     

A vehicular transmission with a main speed change mechanism that has plural speeds and a sub speed change mechanism for establishing a very low speed. Shift forks for selectively changing gear trains mounted on shift fork shafts with the sub speed shift fork mounted on the same shaft as the shift fork...     

Dog clutch with locking synchronization for gear shifts, wherein a synchronizer body (1) and a gear (2) turning with a different rotational speed are coupled together form-lockingly with the aid of an axially displaceable, annularly shaped sliding sleeve (3) when synchronized, whereby an inner toothing...     

In synchronizing mechanisms for clutches having arranged between the clutch body (10) and the axially displaceable gear shift sleeve, each of which are provided with a toothing, a synchronizing ring (14) with teeth (33) having inclined check faces (35, 36) provided on their ends facing the gear shift...     

The invention relates to a planetary gear type auxiliary gearbox intended to be inserted between a main gearbox and a transmission to the driving wheels in a motor vehicle. The input shaft of the planetary gear is rigidly connected to a sun wheel, while the output shaft of the planetary gear is rigidly...     

In a gear type transmission, a pair of gears are provided on input and output shafts always in mesh with each other with one gear being fixedly mounted on the input or output shaft and the other gear being rotatably mounted on the other shaft. A synchronizer for synchronizing the two gears comprises...     

A multi-disk synchronizer is provided wherein the complicated portions of the elements required for the neutral detent mechanism, the blocking mechanism and to prevent overtravel of the shift collar all are provided in a blocking insert held in a slot in the shift collar. The blocking insert preferably...     

A synchronizing mechanism for clutches comprises a gearshift sleeve provided with locking teeth coacting with locking teeth of a synchronizer ring and with separate coupling teeth coacting with the coupling teeth of clutch bodies. The locking teeth of the gearshift sleeve are provided with undercuts...     

In a gear synchronizer, a clutch sleeve has internal splines in continual engagement with external splines of a hub member fixed to a shaft and is axially shiftable to be engaged at its internal splines with external splines of a spline piece integral with a gear member rotatable on the shaft. The gear...     

A blocker-clutch assembly (10) includes an openly porous, pyrolytic carbon composite friction material (74) configured for optimum performance and, therefore, prevention or substantial prevention of nonsynchronous engagement of positive clutch members (12,14) due to premature unblocking of blocker tooth...     

In an inertia lock- and key-type synchronizing clutch assembly, engagement between conical clutch surfaces (29, 36) of a clutch gear (28) and synchronizer ring (35) is enhanced spontaneously under a servo action by a cam means disposed between the synchronizer ring (35) and a hub member (31). Two problems...     

The invention relates to a motor vehicle gearbox with two concentrically mounted input shafts (6,9), each driving an individual countershaft (12,15). The countershafts have gear wheels (16,18,17,19,41) in engagement with gear wheels (21,22,40) on an output shaft. The shafts are arranged in a V-configuration...     

A shift inhibitor for a manual transmission synchronizer clutch positioned on the main shaft and operative to prevent down-shifting to engage a selected speed gear with the output shaft being driven above a predetermined speed. The synchronizer hub has one or more pairs of diametrically opposed radially...     

In a clutch toothing of a shift clutch, mutually confronting tooth ends of the clutch teeth of two clutch rings are equipped, for the axial insertion of the clutch teeth, with two angled unequal length sloping faces, which sloping faces have an equal length along the direction of the clutch axis and...     

A forged gear for a transmission used in a motorcar, an agricultural machine, a construction machine or other industrial machine includes a gear body with spiral teeth and a dog member with dogs which is formed integrally with the gear body. Each dog has a body with a width which becomes greater in an...     

A two-speed gear train (200) including a first gear (118) and a second gear (120) and drive members (11, 114, 106) for driving the second gear faster than the first gear. A double acting clutch (126) splined to a shaft (28A) has a first and second position for clutching either the first gear (118) or...     

A pin-type synchronizer assembly (58) having blocker pins (74) with secondary ramps (80) effective after synchronizing is achieved to minimize "notchiness" is provided.

A synchronizer ring comprises a boss, three projections disposed on the peripheral surface of the boss at the angular interval of 120.degree., and a round elastic ring engaged with and supported by the three projections characterized in that, three protrusions are disposed at both sides or one side of...     

A synchronizer of the pin type employing a friction cone on the gear to be engaged. The synchronizing ring employs pins positively drivingly engaging an axially movable dogged shifting clutch splined to the output shaft and axially engageable with the gear to be engaged. In one embodiment, the synchronizer...     

The present invention, in its disclosed embodiment, is a strut-type synchronizer including a shift sleeve having a modified internal splined surface profile adapted to coact with the struts to counteract normal drag forces produced upon axial movement of the shift sleeve during shifting of gears. In...     

A gear coupler for coupling a gear to a shaft includes a first coupling member which is connected for rotation with the shaft and a second coupling member which is connected for rotation with the gear and engageable by the first coupling member. The second coupling member is capable of limited circumferential...     

A pin-type, double-acting synchronizer mechanism (22) with friction clutches (24,36 and 26,38), jaw clutch (28,14b and 30,16b) and self-energizing ramps. The ramps act between a shaft (12) and a shift flange (32) which is rotatable relative to the shaft and jaw clutch members 28,30. Flange 32 includes...     

A pin-type, double-acting, one-way synchronizer mechanism (22) with friction clutches (24,36 and 26,38), jaw clutches (28,12c and 30,16b) and self-energizing ramps. The ramps act between a shaft (14) and a shift flange (32) which is rotataable relative to the shaft and jaw clutch members 28,30. Flange...     

An improved single cone servo-action synchronizer apparatus having a hub fixed for rotation to a transmission shaft and an outer blocker ring and a ratio gear concentrically disposed on the transmission shaft. The blocker ring is formed with a plurality of longitudinally extending drive tangs which project...     

A clutch device for phase-synchronous coupling of rotating machine elements, includes two coding elements, respectively, co-rotatable with two driven machine elements, a sensor fixed in position adjacent the coding elements, the coding elements having codings thereon which are variable in angular position...     

The present invention, in its disclosed embodiment, is a strut-type synchronizer including a hub having a tapered guide slot adapted to coact with the tapered side wall surfaces of the struts for retaining the struts therein upon axial movement of the shift sleeve. In a preferred form, the tapered profile...     

An improved dual-cone synchronizer apparatus having a middle cone ring concentrically disposed intermediate an outer blocker ring and an inner cone ring on a transmission shaft. The inner cone ring is formed with a plurality of longitudinally extending drive tangs projecting into an associated window...     

A pin-type, double-acting synchronizer mechanism (22) with friction clutches (24,36 and 26,38), jaw clutch (28,14b and 30,16b) and self-energizing ramps. The ramps act between a shaft (12) and a shift flange (32). The shift flange is rotatable relative to the shaft and jaw clutch members 28,30, and defines...     

A retainer retaining a plurality of rollers therein so as to permit their slight movement in a radial direction is disposed between cam grooves provided on the outer periphery of an inner cam secured to a rotary shaft and a roller abutment surface formed on the inner periphery of a gear relatively rotatably...     

A gear transmission has a one-way synchronizer comprising a guide hub that is an integral part of a geared input member, and a shift sleeve that slides axially on the guide hub from a central neutral position either to an extended engaged position or to a retracted disengaged position.

A synchronizer assembly (S) having an axially centered neutral recess (13) and on each axial side of the neutral recess a gear engaging recess (22, 23) is provided. The gear engaging recesses (22, 23) are selectively engageable by a radially outwardly biased detent member (14) mounted in a strut (3)...     

A synchronizer assembly for use in manual transmissions for automotive vehicles wherein an internally splined hub is operatively connected to a driven rotary shaft, an internally splined clutch sleeve being rotatably connected to said hub by external splines on the hub and axially slidable thereon, a...     

In a clutch having a synchronizing device, post-synchronization is attained when the abutment of the locking teeth with the shift teeth changes by designing part of the locking teeth on the synchronizing ring wider than the remaining ones and engaging oblique surfaces of the shift teeth on a sleeve later...     

In a vehicle multi-ratio transmission comprising a plurality of change-speed gear trains, including a backward directional gear train, with which synchronizer clutches are associated for actuating same, two multidisc-type synchronizer clutches (12) are employed for actuating one of forward directional...     

A manual transmission for a motor vehicle includes an input shaft; a counter shaft constantly torque-transmittingly coupled to the input shaft and carrying driven gears; a main shaft carrying forward driven gears mounted for free rotation and being in a constant meshing relationship with respective driven...     

Synchronized forward speed ranges and an unsynchronized reverse range are automatically selected in a gear transmission. The reverse speed range is selected when with an open main clutch at first a synchronizing device for a forward speed range is actuated and once a permissible shifting speed is reached...     

A baulkring-type synchronizer (18) for frictionally synchronizing and positive connecting gears (14,16) to a shaft (12). The synchronizer includes a plurality of tabs (54,56) with self-energizing ramps (54a,54b and 56a,56b) which react synchronizing torque to self-energizing ramps defined by an axially...     

A shift device for a change-speed gearbox has annular shaped coil spring element, which is closed upon itself in the peripheral direction, is mounted on a synchronizer ring and can be deflected centripetally relative to the rotation axis of a shaft mounting a gear. The deflection is caused by inclined...     

A pin-type synchronizer mechanism (86) with self-energizing ramps is configured to provide self-energizing forces for reducing an operator applied shift force (F.sub.o) and/or shift time. The self-energizing forces are provided by self-energizing ramp surfaces (29e,29f,29g,29h) and (111a, 111b,111c,...     

A baulkring-type synchronizer mechanism (18) includes cone clutch friction surfaces (24,28 and 26,50) and sets jaw clutch teeth (58,28 and 60,30) for frictionally synchronizing and positive connecting gears (14,16) to a shaft (12). Blocker teeth on baulkrings (40,42) prevent asynchronous engagement of...     

A transmission gear synchronizer apparatus includes first and second friction races mounted for movement coaxially with each other in a spaced apart relationship, with the friction races being mounted for coaxial movement into and out of engagement with friction surfaces. An annular shiftable clutch...     

A synchronizer clutch assembly for a transmission comprising a synchronizer hub carried by a torque delivery shaft and including a cone clutch member carried by a gear forming a part of the transmission gearing and a synchronizer blocking ring. A C-shaped spring member is positioned in the inner circumference...     

The present invention relates to a strut-type synchronizer. The conventional multi-component strut assembly is replaced with a one-piece strut component having a base segment and a key segment interconnected by a cantilevered biasing segment. The base segment is adapted to be mounted for sliding movement...     

Balls to be moved radially outward by a centrifugal force are held in a clutch hub, and projections extending around the outer circumferences of the balls are united with a synchronizer ring. Those portions of the projections, which radially confront the balls, are formed with slopes for establishing...     

A splitter-type compound transmission (110) is provided with a splitter clutch (180) having increased backlash and a three-position actuator (202) controlled by a microprocessor-based controller (222). The controller will receive inputs for various sensors including a sensor indicating the position of...     

A synchronizer unit eliminates the chattering noise generated when shifting a manual transmission into reverse from a forward gear while the drive shaft continues to rotate in the direction corresponding with the forward gear by providing a reverse brake arrangement for arresting rotation of the input...     

A variable ratio transmission system for coupling a load to a source of rotational power includes a selector shaft having a selector gear axially movable on a fork dolly by an actuator including a lead screw, and a control motor; an inclined cluster shaft having a plurality N of spur gears rotatably...