In Series Plural Interchangeably Locked Nonplanetary Units Patents (Class 74/745)
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Tractor transmission to permit smooth change of speed operation effectuated by rotational resistance
Patent number: 4741227Abstract: A transmission system for a tractor comprising a double clutch for transmitting engine output to an inner shaft consitituting part of a propelling line and to a tubular outer shaft constituting part of a power takeoff line. The double clutch includes a first and second flywheels, and the second flywheel defines a boss for relatively rotatable supporting a forward end of the outer shaft therein. The transmission system further comprises a propelling line change speed mechanism including a reversing gear and a reversing shaft for supporting the reversing gear. A rotational resistance applying device is provided on the reversing shaft for applying a rotational resistance to the propelling line by frictional engagement with the reversing gear.Type: GrantFiled: December 2, 1986Date of Patent: May 3, 1988Assignee: 501 Kubota, Ltd.Inventors: Shunzo Yamada, Satoshi Fujita, Kiyokazu Nakanishi -
Patent number: 4735109Abstract: 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 (56, 58, 60) while the auxiliary section utilizes resiliently shifted blocked jaw clutch assemblies (114, 116, 118, 120). The blocked jaw clutch assemblies are provided with ramps (176, 178, 180, 182) which will cause unblocking during a clutching operation if the main section is not engaged.Type: GrantFiled: July 22, 1987Date of Patent: April 5, 1988Assignee: Eaton CorporationInventors: Elmer A. Richards, Russell C. Holmes
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Patent number: 4733574Abstract: A transmission system has a main transmission, a sub-transmission, and a transfer clutch for four-wheel drive. The sub-transmission has a reduction gear train for providing a low speed range. A gearshift lever of the main transmission has an ultra-low speed position in a shift pattern. When the gearshift lever is shifted to the ultra-low speed position, a first speed gear of the main transmission and the low speed range of the sub-transmission are selected in response to the operation of the gearshift lever. Further the transfer clutch is engaged, so that ultra-low speed by the four-wheel drive is provided.Type: GrantFiled: September 19, 1986Date of Patent: March 29, 1988Assignee: Fuji Jukogyo Kabushiki KaishaInventor: Shintaro Uchiyama
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Patent number: 4722248Abstract: A vehicular transmission shift control system is provided for effecting automatic shifting between a group of sequentially related forward gear ratios provided by the transmission that includes a logic member (16) operative to receive and process an engine speed signal (22) and a gear ratio position signal (30) and to provide an output control signal (33) to a shift actuator (34) that is operative to enable automatic shifting between the sequentially related forward gear ratios whenever the lowest sequentially related forward gear ratios of the group is manually engaged by an operator of the vehicle.Type: GrantFiled: April 11, 1986Date of Patent: February 2, 1988Assignee: Eaton CorporationInventor: Eugene R. Braun
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Patent number: 4719819Abstract: An improved power transmission system for use with a light saddle-type vehicle with an internal combustion engine of cross-mounted type has an improved construction such that there are provided a split type crank case adapted to be split generally centrally into two counterparts in the vertical way, an output shaft mounted on the bottom of and extending along a splitting line of the crank case, and a bevel gear transmission disposed intermediate the output shaft and a secondary drive shaft so that the driving power on the secondary drive shaft from the engine may be transmitted operatively to the output shaft through the bevel gear transmission, and/or that there is provided an auxiliary transission mounted outwardly of an outer bearing means of the transmission housed in the case, and adapted to provide a substantially large overall gear ratio making an increased stage of gear shifting available in the operation of the vehicle, whereby the maneuverability of the vehicle can be improved substantially.Type: GrantFiled: July 23, 1985Date of Patent: January 19, 1988Assignee: Suzuki Motor Company LimitedInventors: Shinobu Tsutsumikoshi, Yasuo Nagaike
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Patent number: 4716775Abstract: A transmission comprising a main change speed mechanism, an auxiliary change speed mechanism, a rear differential mechanism and a cassette type supplementary change speed mechanism. The supplementary change speed mechanism acts on the transmission through an opening defined in a transmission case housing the transmission. The supplementary change speed mechanism is housed in and supported by a supplementary change speed case which is attached to the transmission case. Transmissions of various specifications may be provided by making various types of supplementary change speed mechanism. The supplementary change speed mechanism is applicable to a propelling transmission line and/or a power takeoff transmission line.Type: GrantFiled: April 16, 1986Date of Patent: January 5, 1988Assignee: Kubota, Ltd.Inventors: Yasuyuki Horii, Takao Nishikawa, Isamu Yamanishi, Tomeo Umemoto
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Patent number: 4706519Abstract: A creeper speed mechanism includes a speed reduction gearset driven by an engine through selectively engaged, hydraulically actuated clutches, which are pressurized and vented alternately to produce a high speed ratio and a low speed ratio gear reduction between the engine and the creeper speed mechanism. A coupler connects alternately the creeper speed mechanism and the engine to the transmission input shaft in accordance with the position of a shift rail slidably mounted within the transmission casing. The hydraulic system that actuates the clutches pressurizes a cylinder and moves the shift rail and coupler to engage the creeper speed mechanism. A compression spring moves the coupler away from the creeper speed mechanism and toward engagement with the clutch output. The clutches are vented each time the coupler is moved to a neutral position out of engagement with the creeper speed mechanism and the clutch output.Type: GrantFiled: January 13, 1986Date of Patent: November 17, 1987Assignee: Ford Motor CompanyInventor: Rudolf Beim
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Patent number: 4697475Abstract: A controller for the hydraulic clutch of two speed auxiliary transmission connected in series with the main transmission and engine of a vehicle wherein the hydraulic clutch is applied for the higher speed drive and released for the lower speed drive which is through a one-way clutch that overruns in the higher speed drive operation. The controller is responsive to engine throttle opening to apply the hydraulic clutch for throttle openings below a predetermined amount to allow braking of the vehicle by the engine during deceleration rather than coasting by the overrunning of the one-way clutch.Type: GrantFiled: September 26, 1984Date of Patent: October 6, 1987Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Sadanori Nishimura, Noboru Sekine
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Patent number: 4686869Abstract: A tractor transmission includes a pair of dual power clutches that connects an engine to an input shaft through a gearset that selectively makes a direct connection or overdrives the shaft in accordance with the engaged or disengaged state of the clutches. A synchronizer connects the input shaft to an interior shaft of the transmission. A gear selector moves the sleeve of the synchronizer into engagement either with a gear on the input shaft or a gear on the interior shaft. When certain upshifts are made, the gear selector causes the clutch that overdrives the input shaft gear to disengage and the clutch that directly connects the input shaft gear to the engine to engage. This action slows the gear toward the synchronous speed at which the synchronizer connects the input gear to the interior shaft with minimal shifting effort.Type: GrantFiled: January 13, 1986Date of Patent: August 18, 1987Assignee: Ford Motor CompanyInventor: Rudolf Beim
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Patent number: 4674359Abstract: A vehicular speed change gear wherein a stepless V-belt transmission and a stepped gear transmission are disposed in series in a power transmission system connecting an engine crankshaft and a driving wheel together. An automatic speed change actuator, which automatically actuates the speed change operation of the stepless transmission in association with an engine throttle valve opening and a vehicle speed is connected to the stepless transmission, and a manual speed change actuator is connected to the stepped transmission for manually actuating the speed change operation of the latter.Type: GrantFiled: February 8, 1983Date of Patent: June 23, 1987Assignee: Honda Giken Kogyo Kabushiki KaishaInventor: Torao Hattori
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Patent number: 4674358Abstract: A vehicular transmission in which a multiple speed manual transmission of the two parallel shaft type has an auxiliary transmission connected in series between the two shafts for some of the multiple speeds. The auxiliary transmission providing a high speed and a low speed. The auxiliary transmission includes gearing for providing the high or low speeds to the gears on one of the shafts. A hydraulic clutch and a one-way clutch in said auxiliary transmission selectively connect the high or low speed gearing, with the one-way clutch engaging when the hydraulic clutch is disengaged and being overrun when the hydraulic clutch is engaged.Type: GrantFiled: September 18, 1986Date of Patent: June 23, 1987Assignee: Honda Giken Kogyo Kabushiki KaishaInventor: Sadanori Nishimura
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Patent number: 4660438Abstract: This invention relates to a continuously variable transmission which increases the range of potential transmission ratios and thereby decreases the fuel consumption rate, and which is compact in size and thereby increases space in a passenger compartment. The continuously variable transmission has low and high gear trains and a reverse gear train. Each of the low and high gear trains has a pair of meshed gears and a one-way clutch which controls the direction of transmitting the generated torque. The high gear train further has a clutch which engages at a medium or high vehicle speed and disengages at a low vehicle speed. A jaw clutch is slidably mounted on an output shaft and is located in either a first position or a second position. The jaw clutch forms the low gear train when the jaw clutch is in the first position, and the reverse gear train when the jaw clutch is located on the second position.Type: GrantFiled: August 23, 1985Date of Patent: April 28, 1987Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yuudai Tatara, Susumu Okawa, Hideaki Matsui, Yasunori Nakawaki
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Patent number: 4653342Abstract: The present invention relates to a shift lever mechanism for a transmission in a vehicle in which the driving mechanism is comprised of a differential case, a transmission case, a clutch housing and an engine which are connected respectively and characterized in that the first shifting fork shaft in the clutch is movably protruded through one wall portion of the transmission case, and connected to one end of a first connecting rod member, a first shift lever being connected to the other end portion of said first connecting rod member. The length of said rod member is greater than the lateral vibrational distance within the vehicle, so that the amount of vibration reaching the shift lever from the transmission is greatly reduced to improve ease of shifting and ensure a positive shift.Type: GrantFiled: June 7, 1985Date of Patent: March 31, 1987Assignee: Kabushiki Kaisha Toyoda Jidoshokki SeisakushoInventors: Shuji Ota, Toshihiro Nishio
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Patent number: 4651848Abstract: A selecting device for four-wheel transmission for four-wheel drive motor vehicle comprising a sub-transmission to transmit the power of the engine to a main transmission, a transfer clutch device for transmitting the power to auxiliary drive wheels, a cylindrical shaft for shifting a clutch in the sub-transmission, an actuating rail, a fixed rail, a shift fork slidably mounted on the actuating rail and on the fixed rail and engaged with the transfer clutch device, and an arm slidably mounted on the actuating rail and integral with the cylindrical shaft. The actuating rail is slidably engaged with the cylindrical shaft. A select lever is operatively connected to the actuating rail and disposed in alignment with the actuating rail.Type: GrantFiled: June 11, 1985Date of Patent: March 24, 1987Assignee: Fuji Jukogyo Kabushiki KaishaInventors: Toshio Kobayashi, Shinichirou Mura
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Patent number: 4640146Abstract: A transmission utilizing a plurality of clutch packs, each of which couples the driving and driven gears of one of a plurality of gear sets, the plurality of clutch packs and gear sets being arranged equal radial distances about the input and output of a transmission with the input gear in constant mesh with the driving gears of the radially arranged gear sets and the output gearing in constant mesh with the driven gears of the gear sets.Type: GrantFiled: April 25, 1983Date of Patent: February 3, 1987Assignee: Massey-Ferguson Inc.Inventor: John Buback
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Patent number: 4637269Abstract: 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 is transmitted to the rear wheels through a rear differential and to the front wheels through a drive shaft and a front differential.Type: GrantFiled: June 6, 1983Date of Patent: January 20, 1987Assignee: Kubota, Ltd.Inventors: Shigekazu Hasegawa, Tetsu Fukui
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Patent number: 4635506Abstract: A transmission system for a motorcycle or motorized tricycle, comprising a main gearbox 3 having multiple gear steps, a sub gearbox 4 coupled to the main gearbox having two widely spaced forward gears GL, GH and one reverse gear GR; and one shift lever 14 controlling the selection of the gears in the sub gearbox. The reverse gear may be interlocked with the neutral and lowest speed gear of the main gearbox.Type: GrantFiled: October 14, 1983Date of Patent: January 13, 1987Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Masahiro Imaizumi, Masanori Masumura, Takeshi Ishikawa, Eiji Hosoya
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Patent number: 4633987Abstract: Pressure-medium actuated shifting arrangement for a gear transmission, primarily for a multispeed transmission, in which the speed selection lever performs a movement in accordance with a double H shifting configuration. Within the reach of the driver, in a shift console another transmission shaft is mounted, which is displaced by the speed selection lever for path selection and twisted for gear shifting. The transmission shaft has also cams and valves cooperating with a pressure-medium source over the selection cylinder and shift cylinder mounted to the gear box which actuate a gear-shift-lever shaft, whereby not only the desired shift couplings are put into effect, but also feedback information about the shifting situation in the transmission perceptible by the driver is conveyed.Type: GrantFiled: April 4, 1985Date of Patent: January 6, 1987Assignee: Zahnradfabrik Friedrichshafen AGInventors: Horst Rogner, Roland Schacherer, Gerold Bieber
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Patent number: 4633725Abstract: A transmission range selection mechanism for use with a vehicle transmission assembly having a main gear box and an auxiliary, two-speed gear box provides control over both with a single shift lever moved through a conventional shift pattern. The shift lever is pivotally mounted to a transversely disposed shift rail which is translatable between a first and a second position. A two-position sensor is coupled to the shift rail such that one output state is generated when the shift rail is in the first position and the second output state is generated in the second position. The two-position sensor controls selection of the two gear ranges provided by the auxiliary gear box. Three main shift rails are disposed in a conventional, parallel array at right angles to the auxiliary shift rail and include three shift yokes. The outer two shift yokes include spring-biased pins disposed within shift lever receiving slots.Type: GrantFiled: October 28, 1983Date of Patent: January 6, 1987Assignee: Dana CorporationInventor: Charles R. Jones
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Patent number: 4630705Abstract: A transmission has an output shaft, an end portion of which extends out of from a transmission case. A transfer device is provided for transmitting the output of the transmission to auxiliary drive wheels of the vehicle through a rear drive shaft. The transfer device has a transfer drive gear secured to the extended portion of the output shaft and a transfer driven gear mounted on the rear drive shaft and engaged with the transfer drive gear. The extended portion of the output shaft is rotatably supported by a bearing in the transfer case at the outside of the transfer drive gear.Type: GrantFiled: June 21, 1985Date of Patent: December 23, 1986Assignee: Fuji Jukogyo Kabushiki KaishaInventor: Toshio Kobayashi
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Patent number: 4628768Abstract: A tractor transmission wherein an engine output is transmitted through a clutch mechanism to a primary change speed mechanism, and a clutch housing and a first transmission case are removably connected to each other. The first transmission case includes a space in a forward portion thereof to accommodate a high speed and low speed switching mechanism and a forward and backward switching mechanism, interchangeable with each other, to be attached to a rear wall of the clutch housing.Type: GrantFiled: January 24, 1986Date of Patent: December 16, 1986Assignee: Kubota, Ltd.Inventors: Takaho Omura, Yasuyuki Horii, Taichi Fujiwara, Masaru Nakata
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Patent number: 4621536Abstract: A gear transmission mechanism includes main transmission gearing and auxiliary transmission gearing. Main transmission gearing transmits the movement of a shift lever in a shift direction through a shift mechanism and a fork head to a sleeve, and auxiliary transmission gearing can select a high or low speed ratio in response to transmission of the movement of the shift lever to another sleeve when the shift lever is shifted from a neutral position in one shift direction or the other. The shift mechanism comprises an input member, a reversing mechanism, a reversing member, and a pair of shift heads, the input member coacting with the shift lever such that the movement of the shift lever in the shift direction results in the movement of the input member in a shift direction.Type: GrantFiled: November 28, 1984Date of Patent: November 11, 1986Assignee: Aisin Seiki Kabushiki KaishaInventor: Kenji Takeuchi
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Patent number: 4620453Abstract: An improved transmission mechanism for an off the road vehicle including a primary and an auxiliary transmission and a shifting interlock for precluding shifting of the auxiliary transmission into reverse when the primary transmission is in high gear. The interlock includes a simple, single straight link.Type: GrantFiled: July 12, 1985Date of Patent: November 4, 1986Assignee: Yamaha Hatsudoki Kabushiki KaishaInventor: Toshiharu Kumazawa
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Patent number: 4619153Abstract: A vehicle transmission having a housing within which is disposed a multi-ratio main change speed gear set (X) and a first range change gear set (Z) in series and in which the speed and range changes are effected by selector forks (100, 101, 102) which are mounted on and axially movable relative to a single selector fork rail (105) which is held stationary (108) relative to the housing. Additionally selector forks (103, 104) for a second range gear set (Y) and a creeper gear facility (C) may be mounted on and movable relative to the same selector fork rail (105). The housing is also provided with an access aperture (132) and the selector fork rail (105) can be released and slid axially within the housing to allow removal of the selector forks (100, 101, 102, 103) one by one from one end of the rail (105) via the aperture (132).Type: GrantFiled: November 2, 1984Date of Patent: October 28, 1986Assignee: Massey-Ferguson Services N.V.Inventor: Jean J. Lasoen
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Patent number: 4615233Abstract: A transmission ratio selector mechanism having an upper manually operable gear lever (120) which is mounted (139, 250) intermediate its ends for pivoting about two perpendicular axes and a lower lever member (134) which is pivoted in a fixed mount (136) at its lower end (135) and is connected at its upper end (137) with the lower end (138) of the gear lever (120). The lower lever (134) is interconnected (133) intermediate its ends with a ratio selector shaft (112) whose longitudinal axis passes through the fixed mount (136). Pivoting of the gear lever (120) about one of the perpendicular axis causes axial displacement (W1, W2) of the selector shaft (112) in a direction parallel to its longitudinal axis and pivoting of the gear lever about the other perpendicular axis causes turning of the selector shaft about its longitudinal axis to move one or more ratio selector forks (101, 102).Type: GrantFiled: November 2, 1984Date of Patent: October 7, 1986Assignee: Massey-Ferguson Services N.V.Inventor: Jean J. Lasoen
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Patent number: 4576063Abstract: A power supplying member supplies rotational power in a certain rotational direction to a first member of the transmission, and a power receiving member takes out power from a second member. Several power transmission systems are provided between the first and the second member, which are selectively engageable so as to provide various speed stages between them. Each power transmission system has a clutching mechanism which either can be disconnected so as to freewheel in both rotational directions, or can be connected only in the one rotational direction which is required for transmission of power through that power transmission system, so as to function as a one way clutch. Thus shifting between the speed stages does not require delicate controlling of the clutching mechanisms.Type: GrantFiled: February 11, 1983Date of Patent: March 18, 1986Assignee: Toyota Jidosha Kabushiki KaishaInventors: Teruo Akashi, Hiroshi Ito, Shigemichi Yamada
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Patent number: 4561325Abstract: A transmission range selection device for use with a vehicle transmission having a main gear box and auxiliary two-speed gear box provides control over both with a single, conventional shift lever. The shift lever is pivotally mounted in the tower of the main transmission which is fitted with a switch. Shift forks associated with the main gear box shift rails are conventional except for that fork associated with the highest speed gears which has an extended throat, permitting shift lever movement into positions adjacent and beyond the positions associated with the highest gears of the standard shift pattern. When moved to these additional shift positions, the shift lever selects the highest gears of the transmission and activates the switch which in turn shifts the auxiliary gear box from its lower range to its higher range.Type: GrantFiled: October 20, 1983Date of Patent: December 31, 1985Assignee: Dana CorporationInventor: Terry L. Jester
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Patent number: 4555959Abstract: A control system (158) for a multi-speed change gear transmission (10) of the type permitting preselection of a selected engaged gear ratio is provided. The control system includes an operator actuated selector switch (160) for selection of a desired gear ratio and providing a signal (R,F) indicative thereof, and actuation devices (166, 168, 152) for shifting the transmission into the selected gear ratio in response to said signals. Preselect prohibit valves (162, 164) are interposed the selector switch and actuation devices to block the transmittal of said signals and to maintain the transmission in the currently engaged gear ratio until operator actuation of a prohibit release switch (172) provides a signal (C) indicating operator request for execution of the preselected gear change.Type: GrantFiled: May 9, 1983Date of Patent: December 3, 1985Assignee: Eaton CorporationInventor: Eugene R. Braun
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Patent number: 4532794Abstract: A stamping and bending machine, having modular structure, comprises a drive unit, a pull-in feed system, a stamping press and one or several bending appliances are disclosed. Every bending appliance comprises one top and one bottom box of oblong shape forming a closed frame thanks to spacing elements. Within every box, there are two drive shafts which actuate bending attachments provided on the front and rear faces of the top as well as of the bottom boxes. The drive shafts of stamping press and of all bending appliances are coupled frontally. The shafts will all be driven at the same high speed, stepping down being performed not earlier than at a take-off gearing comprised in any bending attachment.Type: GrantFiled: September 19, 1983Date of Patent: August 6, 1985Inventor: Ernst Mauderer
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Patent number: 4532827Abstract: A tractor transmission having multiple ratios and dual power gearing arrangement located between an engine and multiple ratio gearing whereby the auxiliary gearing effects two multiple ratio drive ranges and wherein shifting from one range to the other in the auxiliary gearing can be accomplished smoothly and wherein the rotary components of the auxiliary gear unit are characterized by low inertia and low power loss.Type: GrantFiled: September 21, 1983Date of Patent: August 6, 1985Assignee: Ford Motor CompanyInventor: Rudolf Beim
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Patent number: 4527447Abstract: 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 (218, 220, 222, 224) which will tend to align the blockers and ramps in a nonblocking condition under the influence of biasing spring (178) if the main section is in neutral. A control unit (38) receives input signals and commands transmission shifts in a sequence including shifting the main section into neutral and shifting the auxiliary section to a new ratio during each shift procedure.Type: GrantFiled: December 6, 1982Date of Patent: July 9, 1985Assignee: Eaton CorporationInventor: Elmer A. Richards
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Patent number: 4512211Abstract: A spacing member 40 is of a special design for use with a differential assembly having drive gears 26 and 26, in the form of worm gears, which are operatively connected to each other through sets of transfer gears 34 and 36, having worm wheel portions 37 for meshing with respective drive gears 26 and 28. The spacing member 40 is made up of a number of pieces for ease of installation and removal and is provided with a mounting element 42 which functions to secure the spacing element in a preferred position between the innermost ends of axle segments 12 and 14. The mounting element 42 is provided with a bore 43 for receiving a journal pin 44 associated with an intermediate gear 38 position between a pair of transfer gears 34 and 36.Type: GrantFiled: March 15, 1983Date of Patent: April 23, 1985Assignee: The Gleason WorksInventor: Gene A. Stritzel
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Patent number: 4508190Abstract: A device for operating a transmission for a four-wheel drive vehicle, the power transmission system of which is selectively changed to two-wheel driving. The power transmission system selectively provides a two-wheel drive, a high range four-wheel drive and a lower range four-wheel drive via movement of a shift lever. The shift lever has a shift movement pattern which laterally changes direction at an intermediate position, such that the shift lever cannot be shifted from one end position to the other end position without passing the lateral direction change.Type: GrantFiled: June 3, 1982Date of Patent: April 2, 1985Assignee: Fuji Jukogyo Kabushiki KaishaInventor: Shintaro Uchiyama
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Patent number: 4499789Abstract: An automatic transmission includes a transaxle casing and an overdrive casing fixed to the transaxle casing. A gear transmission mechanism is housed within the transaxle casing, and an overdrive mechanism is housed within the overdrive casing. Each of these is hydraulically controlled. A first hydraulic fluid accumulator for moderating sudden pressure changes within a part of a control mechanism for the gear transmission mechanism is housed within the transaxle casing, and a second hydraulic fluid accumulator for moderating sudden pressure changes within a part of a control mechanism for the overdrive mechanism is housed within the overdrive casing.Type: GrantFiled: September 28, 1982Date of Patent: February 19, 1985Assignee: Toyota Jidosha Kabushiki KaishaInventors: Koujiro Kuramochi, Tokuyuki Takahashi
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Patent number: 4498356Abstract: 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 shifting of the speeds. The power shifting between the clutch packs on this shift requires no master clutch engagement or disengagement. The plurality of speed which are not power shifted engage via gear synchronizers which require the disengagement of the master clutch while vehicle is still on-the-go. The disengagement of the master clutch simultaneously disengages the clutches in the drive clutch pack and is sequenced in such a manner that re-engagement of the master clutch follows the re-engagement of the drive clutch packs.Type: GrantFiled: May 18, 1982Date of Patent: February 12, 1985Assignee: International Harvester CompanyInventors: George R. Vater, Harold W. Melles
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Patent number: 4485692Abstract: An auxiliary transmission is provided for a light and medium duty truck having manual transmissions. The auxiliary transmission is an electrically actuated two speed gear system to be installed between the clutch and manual transmission for providing a direct pass through of engine rpm or for providing overdrive or underdrive depending on the gear set design.Type: GrantFiled: June 17, 1982Date of Patent: December 4, 1984Inventors: Jeff D. Moore, Eddie C. Moore
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Patent number: 4483210Abstract: A multiple stage speed change gear apparatus including a control lever movable in first and second orthogonally related directions, a first mechanism for operating the shift arms of main speed change gears in response to movement of the control lever in the first direction, and a second mechanism for operating the shift arms of sub-speed change gears in response to movement of the control lever in the second direction.Type: GrantFiled: December 24, 1981Date of Patent: November 20, 1984Inventor: Harutaka Mayuzumi
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Patent number: 4479399Abstract: Three clutch system for operating the composite transmission power train of a farm tractor, comprising first and second power shift clutches, and a master clutch connected by intervening gearing in separate paths to the different power shift clutches so as to be in series with either one. The power shift clutches are selectively connected by electrical hydraulic controlling means to a tractor engine at an engine connected end of a speed transmission in the power train; the master clutch is at the output end of the speed transmission, connecting it to a range transmission which completes the composite transmission power train hereof. A digital microcomputer chip is responsive to manually controlled engagement and disengagement of the master clutch and to other critical control parameters, and is programmed to monitor and control the three clutch controlling means.Type: GrantFiled: May 24, 1982Date of Patent: October 30, 1984Assignee: International Harvester Co.Inventors: Brian C. Narveson, Frank R. Bauer
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Patent number: 4478106Abstract: A gear-shifting mechanism for an automotive transmission or the like comprises a first power train with at least two cascaded ratio-changing couplers inserted between an input shaft and an output shaft, the cascaded couplers being bypassed by a second power train which is normally disengaged but is engageable during shiftovers to interconnect the two shafts with at least one step-down ratio different from any of the speed ratios that can be established by the first power train. The two or possibly more power trains may be constituted by planetary-gear assemblies. One or more of the cascaded couplers could be divided into parallel sections to be alternatively clutched in.Type: GrantFiled: June 25, 1981Date of Patent: October 23, 1984Assignee: Zahnradfabrik Friedrichshafen, AG.Inventor: Friedrich Schreiner
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Patent number: 4464945Abstract: In a motor vehicle gear drive a transmission block as well as a back-gear stage (7, 32), a power take-off stage (10,11) and a differential gear (39,41) for an axle drive (44) are all arranged in a common housing (20). The whole transmission is directly couplable to a driving engine (1) by way of a clutch (3). Engines with differing r.p.ms and outputs can be reduced to the same r.p.m. by means of the back-gear stage (7,32). The power take-off stage (10,11) arranged on the layshaft (6) of the back-gear stage (7,32) and having a coupling device (9) drives a reduction gear (14), at which the drive pinion shaft (15) and the output gear shaft (16,17) are led outside the housing of the reduction gear (14). In this way these shafts (15; 16,17) rotating at different r.p.m. can drive different working devices, which can be driven whether the vehicle is travelling or stationary by virtue of the controllable power take-off (10,11).Type: GrantFiled: February 18, 1981Date of Patent: August 14, 1984Assignee: Interparte AktiengesellschaftInventor: Herbert Ertl
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Patent number: 4463623Abstract: A tractor transmission structure including a first and a second gear transmissions operatively connected in series, each gear transmission providing two speeds. The invention provides a single change-speed lever to operate the two gear transmissions. The change-speed lever is guided along a U-shaped opening to obtain three speeds from the gear transmissions, a low speed, an intermediate speed and a high speed.Type: GrantFiled: October 29, 1981Date of Patent: August 7, 1984Assignee: Kubota, Ltd.Inventors: Junji Miyata, Yasuhisa Matsushita
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Patent number: 4462273Abstract: A change-speed apparatus for a tractor for transmitting engine power to running travel apparatuses via a main change-speed mechanism, an auxiliary change-speed mechanism and a forward-and-rearward-travel-shifter mechanism. These mechanisms are arranged in series in fore-and-aft direction of a machine body and a shifter lever for the said forward-and-rearward-travel-shifter mechanism is disposed in juxtaposition to a main change-speed lever for the said main change-speed mechansim.Type: GrantFiled: October 28, 1981Date of Patent: July 31, 1984Assignee: Kubota, Ltd.Inventors: Takashi Yoshii, Yasuyuki Horii, Tomeaki Tama
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Patent number: 4459874Abstract: A transaxle mechanism of a four-wheel drive system for a vehicle including an engine having an output shaft having an axis of rotation laterally of the vehicle, comprising a transmission gear unit including input and output shafts each having an axis of rotation parallel with the axis of rotation of the engine output shaft, a drive gear rotatable about an axis parallel with the transmission input and output shafts and driven by the transmission output shaft, a first wheel drive gear unit comprising power splitting gear means to split driving power from the drive gear into two power components and a differential gear assembly to transmit one power component to a pair of road wheels, a second wheel drive gear unit comprising right-angle power transfer gear means engageable with the power splitting gear means and adapted to transmit the other driving power component in a fore-and-aft direction of the vehicle, the power splitting gear means constituting low-and-high speed shifting gear means to transfer driving pType: GrantFiled: April 27, 1982Date of Patent: July 17, 1984Assignee: Nissan Motor Company, LimitedInventor: Kunihiko Suzuki
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Patent number: 4458558Abstract: A variable V-belt type continuously variable transmission for vehicles which includes an input shaft and an output shaft, a first torque transmitting gear mechanism alternatively connectable with the input shaft and the output shaft, a countershaft connected to the first torque transmitting gear mechanism, a variable V-belt and pulley assembly, one end of which is connected to the countershaft, and a second torque transmitting gear mechanism connected to an opposite end of the variable V-belt and pulley assembly and alternatively connectable with the input shaft and the output shaft such that torque transmission from the input shaft to the output shaft occurs via a first route through the first torque transmitting gear mechanism, the countershaft, the variable V-belt and pulley assembly and the second torque transmitting gear mechanism and via a second route through the second torque transmitting gear mechanism, the variable V-belt and pulley assembly, the countershaft and the first torque transmitting gear mType: GrantFiled: August 5, 1981Date of Patent: July 10, 1984Assignee: Aisin Seiki Kabushiki KaishaInventor: Andrew A. Frank
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Patent number: 4441379Abstract: An interlock device for a shift mechanism of a multi-speed power transmission device includes a shift rod capable of selective axial positioning at a plurality of predetermined locations for specific gear ratio operating conditions and a neutral non-operating condition. The shift rod includes detents in the surface thereof associated with these locations and a position locating device is aligned with the shift rod to be capable of being forced into engaging contact with one of these detents by the introduction of pressurized air into a power cylinder acting thereon. Selective axial positioning of the shift rod is prevented when the torque transmitting power source providing the input to the transmission device is in a power mode and causes the pressurized air to be applied to the power cylinder.Type: GrantFiled: July 3, 1980Date of Patent: April 10, 1984Assignee: Rockwell International CorporationInventors: Joseph L. Malkowski, Calvin G. Wells
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Patent number: 4440037Abstract: A shift control mechanism for a change speed transmission, or a change speed transmission section, having selectively axially movable gears, the selective axial movement of which is effective to cause engagement and disengagement of the axially moved gear, is provided. The shift control mechanism is utilized for a four speed transmission, or transmission section, and comprises a first shift fork fixed to a first shift rail, a second shift fork fixed to a second shift rail and a third shift fork fixed to a third shift rail. The shift rails are independently axially movable, the first and second shift rails are concentrically received in a first bore of a housing, the third shift rail is received in the second bore of a housing, and positive interlock means are provided to prevent simultaneous displacement of any two or more of the shift rails.Type: GrantFiled: November 4, 1981Date of Patent: April 3, 1984Assignee: Eaton CorporationInventors: Robert J. Foxton, David A. Kappheim, Russell C. Holmes
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Patent number: 4409859Abstract: A compound transmission defining main and auxiliary gearboxes includes an auxiliary shift rail extending into both gearboxes for effecting joint interlock of the two units. The auxiliary shift rail includes an interlock bracket for actuation of a shift interlock element contained within the main gearbox. In a preferred embodiment, the bracket contains a pair of recesses disposed for engaging an interlock plunger, the recess having an angularly offset axis, perpendicular to but not intersecting the axis of the auxiliary shift rail. In another preferred embodiment, the bracket couples the auxiliary shift rail with a second axially spaced shift rail whereby axial movement of the auxiliary shift rail effects like movement of the second shift rail, the latter rail containing a pair of interlock plunger-receiving recesses.Type: GrantFiled: April 30, 1981Date of Patent: October 18, 1983Assignee: Dana CorporationInventor: James A. Yarnell
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Patent number: 4388843Abstract: A control (100) for positioning and locking the auxiliary transmission section (13) of a compound change gear transmission (11) in neutral is provided. The control includes a selector switch (132) for activating or deactivating the control and a monitoring device (42) for sensing if the main transmission section (12) is in neutral. The control, once activated, will retain the auxiliary transmission section in neutral until the selector switch is switched to a deactivated position (M) simultaneously with the main transmission section shifted to neutral.Type: GrantFiled: November 21, 1980Date of Patent: June 21, 1983Assignee: Eaton CorporationInventor: Terry E. Teeter
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Patent number: 4388838Abstract: A multiple substantially identical countershaft (16, 16A), simple change gear transmission (10) having two-piece (20, 20A, 22, 22A) countershafts is provided. The use of two-piece countershafts allows the countershafts to be supported by three bearings (72, 74 and 76) while not requiring greater than normal manufacturing accuracy of the transmission housing (H). A driving connection between the front and rear countershaft portions is utilized which will allow a degree of axial misalignment between the front and rear portions and which when connected assures proper circumferential alignment of the countershaft gears.Type: GrantFiled: July 3, 1980Date of Patent: June 21, 1983Assignee: Eaton CorporationInventors: Elmer A. Richards, Alan R. Davis
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Patent number: RE32591Abstract: An automatic mechanical change gear transmission system (10) is provided. The transmission (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 (218, 220, 222, 224) which will tend to align the blockers and ramps in a nonblocking condition under the influence of biasing spring (178) if the main section is in neutral. A control unit (38) receives input signals and commands transmission shifts in a sequence including shifting the main section into neutral and shifting the auxiliary section to a new ratio during each shift procedure.Type: GrantFiled: May 19, 1986Date of Patent: February 9, 1988Assignee: Eaton CorporationInventor: Elmer A. Richards