Cooperating Holding Pawl Patents (Class 74/154)
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Patent number: 9278671Abstract: A parking brake apparatus includes: a braking member; a ratchet having a plurality of serrations and disposed on one of the braking member and a vehicle body-side member; a pawl rotatably disposed via a pawl pin on the other; and a pawl-urging spring. At start of braking, every time the pawl relatively climbs over the serration, the pawl is brought into contact with a non-locking surface side of the serration in accordance with an urging force of the pawl-urging spring. The pawl has a triangular engagement tooth that is inserted into a tooth groove of the ratchet, and a second side end surface facing the non-locking surface is covered with a synthetic resin except a tip portion of the engagement tooth. The non-locking surface is a concave surface concaved so as to be recessed from a straight line connecting a tooth tip and a tooth bottom of the serration.Type: GrantFiled: August 21, 2012Date of Patent: March 8, 2016Assignee: Toyoda Iron Works Co., Ltd.Inventor: Yasuhiro Nagata
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Patent number: 6038936Abstract: An apparatus and method is disclosed for retaining a first and second PTO in longitudinal relation to an output sleeve in an agricultural vehicle. The output sleeve is for interchangeably supporting and transmitting rotational power to the first and second PTOs, and includes an outward protrusion proximate an end of the output sleeve. The apparatus includes an outer plate with an outer plate aperture such that the outer plate can be longitudinally positioned onto the first PTO behind a shoulder on the first PTO. The apparatus also includes an inner plate with an inner plate aperture such that the inner plate can be longitudinally positioned onto the output sleeve, and an inward protrusion into the inner plate aperture.Type: GrantFiled: November 6, 1998Date of Patent: March 21, 2000Assignee: Case CorporationInventors: George M. Butkovich, Vladimir Shubinsky
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Patent number: 5983737Abstract: A kit for converting a base transmission having a mid PTO shaft and a detachable original equipment rear cover into an optional configuration transmission having a rotatable mid PTO shaft and a rotatable rear PTO shaft that are both selectively drivable such that they can be commanded by the operator to rotate simultaneously or individually. The kit includes a conversion rear cover for replacing the original equipment rear cover, a rear PTO cover with an aperture therein mounted to the conversion rear cover, a rear PTO shaft rotatably supported in the aperture and extending into the conversion rear cover, and a three position selector assembly mounted on the conversion rear cover and the PTO rear cover. When installed on the base transmission, the selector assembly of the kit allows the operator to cause the rotation of the mid PTO shaft only, both the mid and rear PTO shafts simultaneously, or the rear PTO shaft only.Type: GrantFiled: December 17, 1998Date of Patent: November 16, 1999Assignee: Sauer Inc.Inventors: Martin J. Oosterhuis, Michael A. Betz, Larry R. Walker, Thomas A. Rosskopf
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Patent number: 5970809Abstract: A transmission device for farm tractors is disclosed. In the transmission device, a hollow travelling drive shaft and a PTO drive internal shaft are substituted for a typical hollow PTO drive shaft and travelling internal shaft, respectively. The transmission device also has a splined flange for directly transmitting the engine power from the flywheel to the PTO drive internal shaft. In a main change gear unit, a hub sleeve and a main gear shifting shaft are forged into a single structure. A super low-speed change gear unit is connected to a sub-change gear through two sets of shafts capable of allowing the super low-speed change gear unit to be independently operated from the sub-speed change gear unit. The transmission device is thus selectively operated without performing any super low-speed changing action.Type: GrantFiled: June 2, 1998Date of Patent: October 26, 1999Assignee: Tongyang Moolsan Co., Ltd.Inventors: Yo Sang Nam, Young Sun Kang, Gye Yong Song, Sang Il Nam, Sam Suk Jung
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Patent number: 5944959Abstract: An integral outboard bearing support for a gear reducer on a papermaking machine oscillating doctor. The bearing support rotatably supports a distal end of the gear reducer's drive shaft to reduce deflection and fatigue. The outboard support also aligns internal bearing supports with the outboard support to optimize performance by preventing current reducer shaft and support bearing failures.Type: GrantFiled: August 14, 1997Date of Patent: August 31, 1999Assignee: Beloit Technologies, Inc.Inventor: Frank J. Wywialowski
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Patent number: 5937697Abstract: In a tractor comprising a hydraulic lift case (13) mounted on an upper surface of a tractor rear housing (4), a support plate (65) is disposed in an opening (57) in a top wall of the rear housing. This plate is mounted to the rear housing preferably through the lift case which covers the opening. A power take-off shaft (68) is supported in the lift case and is connected to a transmission shaft (34), driven by engine, at a location below the opening through a gear train (60, 61, 62) which passes through the opening and includes an intermediate gear (61) supported by the support plate. This take-off shaft permits taking off power to a spare space at an outside location of the lift case, where at least one pump (71; 72) driven by this shaft is preferably disposed. Another power take-off shaft (36) extending rearwardly of the rear housing is provided and is connected to the transmission shaft through a PTO-clutch (37) and through a speed change mechanism (38).Type: GrantFiled: January 20, 1998Date of Patent: August 17, 1999Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventor: Mizuya Matsufuji
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Patent number: 5765646Abstract: Various types of working machines can be installed on a combined control machine car body as occasion demands, and the operation of a working machine can be automatically performed with the engine power of said combined control machine car body without a separate power source for each working machine. Accordingly, various types of fruit culture tasks can be simultaneously performed, thereby reducing expenditures, and more productively and efficiently performing the tasks of preventing damage by disease and pest, rotary work, cultivation weeding, spreading earth, pruning and sprinkling compost.Type: GrantFiled: January 31, 1996Date of Patent: June 16, 1998Assignee: A. I. C. Machinery Co. Ltd.Inventor: Woong Gil Kim
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Patent number: 5718299Abstract: The drive device for an agricultural harvester includes a gear unit (5) driven by an internal combustion engine through a hydrostatic transmission comprised of a hydraulic pump (1) and a hydraulic motor (2). The transmission unit (5) drives a pair of drive wheels (12) through the differential (8). A power takeoff device (13) is installed between the hydraulic motor (2) and the transmission unit (5) and a clutch is installed between the power takeoff device (13) and the transmission unit (5) thus permitting operation of the power takeoff device while power to the drive wheels is disconnected. A brake (4) is provided on the transmission unit and a brake is provided for each of the drive wheels (12).Type: GrantFiled: December 10, 1996Date of Patent: February 17, 1998Assignee: Same S.p.A.Inventors: Martin Hafele, Hermann Berghorn
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Patent number: 5447081Abstract: The gearcase for transmitting motion with different speeds to at least two driving shafts in self-propelled farm machines forms two contiguous chambers and has a driving shaft. A main driving shaft enters a first chamber, and has a head which extends into a second chamber for transmission meshing with a driven shaft. Another driven shaft is provided with a set of speed-shifting gears, is arranged below and parallel to the main driving shaft and transmits motion to a third driven shaft accommodated in a housing lying below the first chamber.Type: GrantFiled: January 21, 1994Date of Patent: September 5, 1995Assignee: Comer S.P.A.Inventor: Achille Brunazzi
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Patent number: 5339703Abstract: A transmission for a working vehicle comprises a transmission case disposed between an engine and rear wheels, the transmission case housing, in a forward portion thereof, an input main shaft, a propelling transmission shaft and a PTO transmission shaft extending parallel to one another in the fore and aft direction. The two transmission shafts are arranged at laterally opposite sides of the input main shaft. A propelling change speed gearing is mounted on and between the input main shaft and propelling transmission shaft. A PTO change speed gearing is mounted on and between the input main shaft and PTO transmission shaft. These change speed gearings are operable by change speed levers extending upwardly from a clutch case interposed between the engine and transmission case.Type: GrantFiled: February 22, 1993Date of Patent: August 23, 1994Assignee: Kubota CorporationInventor: Tomio Tanaka
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Patent number: 5301564Abstract: The gear-change transmission has a closely stepped input group (7) before a main group for fine tuning the speed within a working range. Between the input group (7) and the main group (8) is situated a pressurized-oil cooled drag-torque reducing multi-disc starting clutch (26) so that the gears in both groups can also be easily engaged when using synchronizer positive clutches (18, 20). A reversing shaft (13) for reverse gear is fully integrated in the input group (7) and its gear clutches (F/G) can be introduced with a gear selector (83, 112) the same as for the remaining splitter gears of the input group (7). A change-over clutch (36) for an intermediate transmission (9) is optionally placed directly before the starting clutch (26) operatively and structurally on the primary shaft (32) of the starting clutch (26).Type: GrantFiled: January 3, 1992Date of Patent: April 12, 1994Assignee: Zahnradfabrik Friedrichshafen AGInventors: Franz Muller, Jurgen Pohlenz, Hubert Lehle, Erwin Baur, Herbert Simon
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Patent number: 5245892Abstract: A transmission generates the travelling and PTO outputs of a farm tractor. The transmission can easily generate the travelling output of a 15-step forward movement and a 9-step backward movement and the output of a 4-step PTO by fractionalizing the number of speed changing steps. The transmission uses a large number of identically standardized gears and hub sleeves but reduces the number of built-in parts in each part of the transmission, raises the productivity by using a large number of the same parts and controls the equipment efficiently due to easy disassembly for maintenance.Type: GrantFiled: March 10, 1992Date of Patent: September 21, 1993Assignee: Gold Star Cable Co., Ltd.Inventors: Eui H. Kim, Hyung T. Kim
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Patent number: 5239887Abstract: The invention concerns a multi-step speed-change transmission. An intermediate transmission (9) is situated between an input group (7) and a main group (8). A double gear (28, 29) forms an additional overdrive. The speed-change transmission according to the invention is provided for use in motor vehicles utilized in agriculture or construction.Type: GrantFiled: December 10, 1991Date of Patent: August 31, 1993Assignee: Zahnradfabrik Friedrichshafen AGInventors: Franz Muller, Jurgen Pohlenz, Hubert Lehle, Edwin Baur, Herbert Simon
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Patent number: 5195402Abstract: A direct drive system for a baler of large round bales. A plurality of driven gearboxes, each of which has a planetary gear system and an interconnected bevel gear system, are located on a side wall of the baler and are each drivably connected to one of a plurality of transverse driven shafts of the baler. A distribution gearbox on the side of the baler is connected through a right angle gearbox to the power take-off of a tractor. Power from the distribution gearbox is distributed to the plurality of driven gearboxes through a plurality of driven gearboxes through a plurality of lateral drive shafts. The direct drive system of the present invention replaces substantially all of the roller chain and sprocket drive system of known balers.Type: GrantFiled: January 31, 1991Date of Patent: March 23, 1993Assignee: Vermeer Manufacturing CompanyInventors: Kenneth R. McMillen, Wallace L. Edwards
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Patent number: 5170674Abstract: An improved power take-off arrangement for a transfer case which is readily incorporated into a planetary gear reduction assembly without necessitating excessive redesign of the transfer case. The power take-off arrangement includes utilization of a bearing support member for eliminating excessive eccentric loading during power take-off operation while providing improved centering and piloting capabilities.Type: GrantFiled: January 15, 1992Date of Patent: December 15, 1992Assignee: New Venture Gear, Inc.Inventors: Randolph C. Williams, Robert J. Wilson
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Patent number: 5099937Abstract: A primary drive line for delivering power from a power-take-off (pto) shaft on a tractor to an input shaft on an implement includes a swivel hitch comprised of an upper gearbox and a lower gearbox. The upper gearbox is fastened to a pair of spaced apart, upper vertical plates carried on a tongue extending forwardly from the implement, and the lower gearbox is fastened to a pair of spaced apart, lower vertical plates carried by a yoke assembly that is attached to the tractor. An output shaft on the upper gearbox is coupled to the implement input shaft. The lower gearbox has two input/output shafts, one of which is coupled to an input shaft on the upper gearbox. The other input/output shaft on the lower gearbox is connected to the tractor pto shaft. When changing tractor pto speeds (i.e.Type: GrantFiled: May 31, 1991Date of Patent: March 31, 1992Assignee: Ford New Holland, Inc.Inventor: Kenneth W. McLean
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Patent number: 5099704Abstract: An improved power take-off arrangement for a transfer case which is readily incorporated into a planetary gear reduction assembly without necessitating excessive redesign of the transfer case. The power take-off arrangement includes utilization of a bearing support member for eliminating excessive eccentric loading during power take-off operation while providing improved centering and piloting capabilities.Type: GrantFiled: April 19, 1991Date of Patent: March 31, 1992Assignee: New Venture Gear, Inc.Inventors: Randolph C. Williams, Robert J. Wilson
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Patent number: 4938085Abstract: A power transmission system in a tractor having a travelling drive sub-system for driving wheels and a PTO drive sub-system for driving working machines. A transmission case is provided with a single input shaft connected to an engine, and the travelling drive sub-system and the PTO drive sub-system are respectively led out from the input shaft separately. The travelling drive sub-system is connected to the input shaft via a main clutch, and is composed of a multi-stage speed-changer having a plurality of speed-changer clutches. The PTO drive sub-system is connected to the input shaft via a PTO clutch that is different from the main clutch, and at the rear portion of the PTO drive sub-system is provided a power transmission switching apparatus which can selectively transmit power to a plurality of PTO shafts.Type: GrantFiled: June 16, 1988Date of Patent: July 3, 1990Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Takanori Suzuki, Kenji Nakamura, Satoshi Matsuzawa
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Patent number: 4862988Abstract: A four wheel drive working vehicle comprises a first shaft for driving rear wheels, and a second shaft for driving front wheels. The first and second shafts are coaxially and relatively rotatably supported by a transmission case. The first shaft carries a first gear relatively rotatably mounted thereon, and the second shaft carries a second gear fixed thereto. A gear transmission unit is detachably bolted to the transmission case to transmit drive from the first gear to the second gear. A clutch device is mounted on the first shaft to be switchable between a position to directly interconnect the first shaft and the second gear for driving the front and rear wheels at the same speed, and a position to directly interconnect the first shaft and the first gear for driving the front wheels at a higher speed than the rear wheels.Type: GrantFiled: July 6, 1988Date of Patent: September 5, 1989Assignee: Kubota, Ltd.Inventor: Tomeo Umemoto
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Patent number: 4856355Abstract: A transmission for a tractor, in which a hydraulic working machine lift is mountable at the position lower than the conventional, on the upper surface of a mission case so that an operator cab is lowered to that extent, whereby a high and low transmission unit, a multistage transmission unit and a PTO transmission unit are entirely disposed before a bearing wall of the mission case, a rear portion thereof housing therein a diff gear unit is depressed, and the hydraulic working machine lift is loaded on the depressed portion. Also, a rear axle housing is reduced in length not to largely laterally project and a disk brake device is used to simplify the structure.Type: GrantFiled: April 8, 1988Date of Patent: August 15, 1989Assignee: Kanzaki Kokyukoki Mfg., Co. Ltd.Inventor: Yoshitaka Ishimaru
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Patent number: 4850234Abstract: A speed reduction mechanism comprises a drive member rotated by a rotary drive force of a drive source; a fixed member opposing to the drive member; a rotor disposed between the drive member and the fixed member and contacting the drive member and the fixed member and rotated around itself by the rotation of the drive member and revoluted around a rotary central portion of the drive member; and a speed reduction rotary member for rotatably supporting the rotor and rotated around the rotary central portion of the drive member by the revolution of the rotor.Type: GrantFiled: March 10, 1988Date of Patent: July 25, 1989Assignee: Fujikiko Kabushiki KaishaInventor: Masanobu Yamazaki
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Patent number: 4824128Abstract: A transmission for a tractor comprising a power takeoff line change speed gear mechanism, propelling line change speed gear mechanisms and a backward and forward drive switching mechanism. The propelling line change speed gear mechanisms include a main change speed mechanism, an auxiliary change speed mechanism and a front wheel change speed mechanism. The power takeoff line change speed mechanism, and the main and auxiliary change speed mechanisms somewhat encircle a longitudinal center line transversely of the transmission. The backward and forward drive switching mechanism and the front wheel change speed mechansim are juxtaposed in a region immediately forwardly of the change speed machanisms B, C and E.Type: GrantFiled: April 29, 1987Date of Patent: April 25, 1989Assignee: Kubota, Ltd.Inventors: Masao Takagi, Masayoshi Miyahara, Nobuyuki Toshikuni
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Patent number: 4776226Abstract: A power takeoff mechanism for a farm tractor with two interchangeable power takeoff shafts which can be driven at different speeds and are connected by means of annular flanges of different diameters with a driving flange on the end of an output shaft wherein a pawl is pivoted near the driving flange and is connected to a clutch lever of the gear shifting mechanism whereby the pawl must be pivoted to a predetermined position when one of the power takeoff shafts is installed, thereby preventing the clutch lever from being operated in a manner to select an inappropriate speed for the installed power takeoff shaft.Type: GrantFiled: April 8, 1987Date of Patent: October 11, 1988Assignee: Kloeckner-Humboldt-Deutz AGInventor: Walter Zenker
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Patent number: 4727759Abstract: A front and rear transmission casing are joined to form a single casing. Upper and lower input shafts are received and supported by the front casing. The lower input shaft drives a change speed gearing with a speed change shaft and a pinion shaft. The pinion shaft has a pinion gear located on a further end of the shaft and engages a ring gear of a differential. The upper input shaft drives a clutch driven shaft through a PTO clutch unit. A rear PTO shaft is driven by the clutch driven shaft and extends out of the rear casing. A mid PTO shaft is also driven by the clutch driven shaft and extends out of the front casing.Type: GrantFiled: August 19, 1986Date of Patent: March 1, 1988Assignee: Kanzaki Kokyukoki Mfg. Co. Ltd.Inventors: Kojiro Yamaoka, Shusuke Nemoto
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Patent number: 4722234Abstract: A two-speed power-take-off drive for a tractor is disclosed which includes an assembly for sensing and indicating the PTO shaft speed to an operator in the tractor cab. The speed of the PTO shaft is a function of which end thereof is inserted into the drive sleeve, which determines the extent of its penetration into the drive sleeve. A speed indicator arrangement is provided which includes a sensing rod whose movement is controlled by the extent of penetration of the PTO shaft into the drive sleeve. The sensing rod is operative to activate or inactivate an electrical switch. The electrical input condition of the switch serves as an input to the tractor instrument cluster in the tractor cab to indicate the selected PTO shaft speed.Type: GrantFiled: December 1, 1986Date of Patent: February 2, 1988Assignee: J. I. Case CompanyInventors: Walter D. Greene, Harold E. Lenz, Darrel J. Svendsen
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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: 4667536Abstract: A hydrostatic/mechanical transmission system for motor vehicles having an engine coupled with a multi-speed mechanical transmission and a hydrostatic transmission including an accessory drive connectable to activate a variable displacement hydropump that is hydraulically connected with hydromotor; wherein, in one mode of operation, the hydrostatic transmission is operated, with the mechanical transmission in neutral, and the hydromotor drives the vehicle by way of a stepdown gear, wherein the stepdown gear drive is a multistep power transmission and wherein when in the one mode, the hydromotor drives a secondary gear shaft of the multi-speed transmission, the connection of this one mode being possible only in the neutral position of the multi-speed transmission.Type: GrantFiled: September 10, 1984Date of Patent: May 26, 1987Assignee: Zahnradfabrik Friedrichshafen AGInventors: Friedrich Ehrlinger, Egon Mann
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Patent number: 4610174Abstract: A transmission for a tractor in which a forward-reverse change mechanism M3 is disposed between a first change speed mechanism M1 and a second change speed mechanism M2 and to the first change speed mechanism M1 a PTO countershaft 34 and a PTO shaft shaft 32 connected thereto are operatively connected. A drive shaft 47 for front wheels is operatively connected to the second change speed mechanism M2. A rotational power is transmitted to a mid-PTO shaft 39 from the PTO countershaft 34 via a gear 50 which is mounted freely and rotatably on the drive shaft 47 for the front wheels.Type: GrantFiled: August 22, 1984Date of Patent: September 9, 1986Assignee: Kubota, Ltd.Inventors: Masao Takagi, Mitsuo Watashi
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Patent number: 4594906Abstract: In a tractor power take-off mechanism comprising an input shaft driveable from an engine by a friction clutch and a two-speed power take-off shaft driveable from the input shaft by gearing including a disengageable toothed driving member operable by a hand lever by way of a selector fork, the disengageable toothed driving member can be difficult and noisy to engage because the input shaft tends to rotate due to inertia and drag when the friction clutch is disengaged. The input shaft is therefore provided with a band brake applied by initial movement of the hand lever in a direction to engage the disengageable toothed driving member and held applied while an operating load is being exerted on the lever in that direction. A conventional detent holding the selector fork in disengaged position provides the resistance required to cause the brake to be applied before the lever can move the fork into engaged position.Type: GrantFiled: March 1, 1984Date of Patent: June 17, 1986Inventors: Martin P. Vincent, Roger M. Weyman
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Patent number: 4581949Abstract: A multi-speed transmission (4) driven by an engine (1) and is connected to drive an intermediate gearbox (16) that drives an axle drive (17). To obtain creep speed drive, a motor-dependent P.T.O. shaft (14) drives upon a variable displacement pump (18), which is connectable to a hydromotor (22) through pipes (20, 20A and 21, 21A). When the clutch (26) is connected and in the neutral position of the variable gear (2), the hydromotor (22) acts upon an output shaft of intermediate gear box (15) that in turn drives the axle drive (17). When changing to a garbage pressing operation in the stationary state of the vehicle, the variable displacement pump (18) is shifted by a change-over valve (28) to drive the pressing cylinder of the accessory hydraulic power system (30).Type: GrantFiled: September 10, 1984Date of Patent: April 15, 1986Assignee: Zahnradfabrik Friedrichshafen AGInventors: Egon Mann, Unal Gazyakan
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Patent number: 4579544Abstract: In a motor-driven movable toy vehicle, a single motor is used in common for driving the toy vehicle body at a high speed or a low speed and a winch mechanism. To select one of the driving modes, a selector lever is so arranged as to shift a slide gear assembly. Additionally, a power releasing mechanism is provided for the winch mechanism for preventing toy parts from being damaged when a winch wire is excessively rolled up.Type: GrantFiled: November 3, 1983Date of Patent: April 1, 1986Assignee: Kabushiki Kaisha MatsushiroInventor: Yukimitsu Matsushiro
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Patent number: 4565102Abstract: PTO-driving of a double-clutch-incorporated type transmission characterized in that the PTO-driving comprises a first gearing mechanism interlocking with a PTO main shaft, a second gearing mechanism interlocking with a running-travel main shaft, and a coupling means functioning to selectively drivably couple the said gearing mechanisms with a PTO transmission shaft.Type: GrantFiled: May 6, 1985Date of Patent: January 21, 1986Assignee: Kubota, Ltd.Inventors: Masayoshi Miyahara, Masao Takagi
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Patent number: 4546661Abstract: A power take-off (PTO) unit with parallel input and output shafts mounted in a PTO case with the input shaft adapted to be piloted in the countershaft of a transmission and the PTO case adapted to be secured to the transmission case. An input gear is slidably splined on the input shaft adjacent its piloted end, and the input shaft also carries an input sprocket. On the output shaft is rotatably mounted an output gear which is geared to the input gear and an output sprocket drivingly connected to the input sprocket by a chain drive. A clutch carried by the output shaft alternately clutches the output gear or output sprocket to the output shaft while the input gear has a clutch portion thereon and is slidable to engage a clutching member carried by the countershaft to drivingly connect the countershaft to the PTO input shaft.Type: GrantFiled: January 9, 1984Date of Patent: October 15, 1985Assignee: Dana CorporationInventors: Philip J. Weis, Richard A. Cook
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Patent number: 4539862Abstract: A detent hold and release mechanism on a manually positioned valve controller which electrically signals a servo controlled conventional hydraulic control valve. The mechanism has a detented operating position and a spring-returned neutral position when the detent is released; the detent is held in operating position by a locking pawl urged by a permanent magnet. The mechanism is released by energizing an electro-magnet positioned adjacent the permanent magnet with reverse polarity whereby the combined magnet forces are neutralized, thereby releasing the pawl and allowing the valve controller to return to the neutral position.Type: GrantFiled: December 4, 1981Date of Patent: September 10, 1985Assignee: The Cessna Aircraft CompanyInventor: Patrick N. Caldwell
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Patent number: 4467663Abstract: An overload coupling includes at least one latch plunger housed in a holder or in a coupling member, fits in a recess of a second member to establish connection. The plunger has or is part of a hydraulic system and can be forced out of the recess upon overload against the hydraulic pressure in the system and, in some instances, with the aid of centrifugal forces. The plunger and holder can be part of a unit that is releasably fastened in the coupling member and set to trip upon torque exceeding a predetermined level on the coupling member. Also, the plunger can have internal ducts or external conduits that include a pressure relief valve, as well as a spring return, which can effect connection upon reduced speed when centrifugal force factors are reduced. The pressure in the system can be set remotely with a piston that is spring loaded. In one variation, the coupling can be within a planetary gear system that establishes driving connection from an input to an output via planetary and sun gears.Type: GrantFiled: October 22, 1980Date of Patent: August 28, 1984Inventor: Cornelis van der Lely
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Patent number: 4430903Abstract: An improved amusement or game device of the type which has one or more indicia-bearing rotatable reels which are rotated upon initiation of play by a player is disclosed. The game device has an improved main drive mechanism which permits the player to vary the initial rotational speed of the reels in direct proportion to the speed in which an associated operating handle is pulled. A supplemental drive mechanism is included for increasing the speed of the reels if the player fails to pull the operating handle with sufficient force to rotate the reels at a predetermined minimum speed. The device also includes an improved indexing means for stopping the reels in accordance with the operation of the game device. The game device also includes means for absorbing excessive energy that may be provided by a player pulling the operating handle with extraordinary speed or force.Type: GrantFiled: September 25, 1981Date of Patent: February 14, 1984Assignee: Bally Manufacturing CorporationInventors: Donald E. Hooker, Roman A. Tojza
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Patent number: 4391154Abstract: An improved digging machine for operation with the power takeoff of a tractor wherein the digging machine includes a gearbox that permits the machine to operate at different speeds independent of the tractor speed in order to accommodate varying ground conditions while maintaining constant sod width. The gearbox includes first and second gear shafts, with the first gear shaft being driven by the power takeoff and transmitting its motion to the second gear shaft through respective first and second gear sets, with the second gear shaft driving at least one hoe-driving shaft. The corresponding gears of the first and second gear sets are selectively engageable to provide plural speed settings, thereby permitting variation of the frequency of the hoe strokes within a wide range. The gearbox is movably orientable on the frame of the digging machine in a vertical plane about the longitudinal axis of the frame in order to accommodate tractors having power takeoffs disposed at different heights.Type: GrantFiled: May 6, 1980Date of Patent: July 5, 1983Inventor: Michele Tortella
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Patent number: 4356938Abstract: A pressure release mechanism relieves pressure to a prescribed value in a caulking gun. The pressure release mechanism includes a slot positioned in the handle of the gun and a pin which slides in the slot. A pawl is pivotably attached to the pin and engages the teeth of a ratchet bar to rearward movement of the ratchet bar and piston. An outwardly biased operating lever with an upper cam shaped surface engages the pin and urges the pin and pawl towards the front end of the slot as caulking compound is extruded from the gun under pressure. When the operating lever is completely released, the cam surface permits a biasing spring to move the pawl and pin to the rear of the slot. The pawl is engaged with a ratchet bar tooth as it moves to the rear, and thereby allows the ratchet bar and piston to move rearwardly a limited distance, which relieves the pressure within the caulking gun sufficiently to stop the flow of caulking material.Type: GrantFiled: October 10, 1980Date of Patent: November 2, 1982Inventor: Steven J. Kayser
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Patent number: 4351196Abstract: A multistage change-speed apparatus for a tractor has a running-travel-system change-speed gearing apparatus, a planetary gearing reduction apparatus operatively connected to that apparatus, an intermediary transmission shaft driven by this apparatus, a speed-reduction shaft disposed beneath that shaft, a bevel pinion shaft disposed in parallel with this shaft, an auxiliary change-speed gearing apparatus disposed between these two shafts, and a differential operatively connected to that apparatus. The planetary gearing reduction apparatus is shiftable between the operative state and the inoperative state.Type: GrantFiled: November 16, 1979Date of Patent: September 28, 1982Assignee: Kubota, Ltd.Inventors: Jituo Yoshida, Kazuo Toyokuni
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Patent number: 4309914Abstract: A ship drive system with main engine, main transmission and propeller shaft is supplemented by a transmission branch permitting power transmission in both directions. The branch includes an auxiliary engine, an a.c. generator selectively connected to that auxiliary engine and a controlled transmission unit interposed between the generator shaft and a branch shaft from the main transmission. The unit includes two planetary gear sets of different transmission ratios, their sun gears are mounted on the generator shaft, and a common spider for two sets of planet gears is mounted on the branch shaft; the two internal ring gears for the planetary gears are selectively, one at a time or none, immobilized for power transmission at the respective speed ratio.Type: GrantFiled: December 20, 1978Date of Patent: January 12, 1982Assignee: Mannesmann AktiengesellschaftInventors: Heinz M. Hiersig, Herbert Wedler
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Patent number: 4294130Abstract: A transmission for a tractor in which a main shaft to receive engine power, a travelling speed change shaft and a PTO speed change shaft are disposed in parallel with one another. A first travelling speed change means of a hydraulic clutch type is disposed on the travelling speed change shaft and provided with clutch means for backward travelling and first-stage forward travelling. A second travelling speed change means of a hydraulic clutch type is connected to and disposed rearwardly of the main shaft and provided with clutch means for second-stage, third-stage and fourth-stage forward travelling. The second hydraulic clutch type travelling speed change means is so constructed that, in response to power input from the main shaft, the clutch function thereof is performed prior to the speed change function thereof.Type: GrantFiled: April 5, 1978Date of Patent: October 13, 1981Assignee: Kubota Ltd.Inventors: Hiroyuki Kisaka, Makoto Sagata, Masayoshi Miyahara, Morimitsu Katayama
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Patent number: 4294131Abstract: A tractor travelling system transmission mechanism for providing tractor travelling system stepless speed change including the stop status of a tractor, and tractor forward/backward changeover, by using a friction type stepless transmission means, a planet reduction gearing and a forward/reverse changeover gearing, which is independently disposed without commonly utilizing the friction type stepless transmission means or the planet reduction gearing as a forward/reverse changeover means.Type: GrantFiled: May 26, 1978Date of Patent: October 13, 1981Assignee: Kubota, Ltd.Inventor: Yoshinobu Murayama
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Patent number: 4292855Abstract: In a farm tractor of four wheel drive type, a speed change device for a power takeoff shaft projecting from a rear portion of a transmission case for driving a work implement attached to the rear end of the tractor is mounted in the rear portion of the transmission case, and a main shaft to receive output of the engine, a pinion shaft for driving the rear wheels and a transmission shaft for driving the front wheels are mounted in the front half of the transmission case with minimum spacing between the three shafts. This arrangement permits the transmission case to be compact in the vertical as well as transverse directions and provides a large space in the tractor underbelly for attaching a work implement.Type: GrantFiled: October 11, 1978Date of Patent: October 6, 1981Assignee: Kubota, Ltd.Inventor: Yoshinobu Murayama
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Patent number: 4287778Abstract: A hydraulic valve for a two-speed power take off selectively operated by a reversible stub shaft providing the proper output drive.Type: GrantFiled: December 26, 1979Date of Patent: September 8, 1981Assignee: Allis-Chalmers CorporationInventor: David C. Quick
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Patent number: 4273001Abstract: A gear transmission comprising a driving transmission shaft, a driven transmission shaft, a gear shaft between the two transmission shafts, three speed change gears of different diameters mounted on the gear shaft, an auxiliary speed change shaft carrying three gears of different diameters respectively in mesh with the speed change gears, and two clutch members provided between one or the other of the transmission shafts and the gear shaft. Each clutch member provides two speeds by switching between a position to connect one of the transmission shafts to the gear shaft and a position to connect the transmission shaft to one of the speed change gears. Thus the gear transmission provides a total of four speeds.Type: GrantFiled: March 26, 1979Date of Patent: June 16, 1981Assignee: Kubota, Ltd.Inventors: Masayoshi Miyahara, Morimitsu Katayama, Hiroyuki Kisaka
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Patent number: 4271942Abstract: A two-speed power take-off drive having interchangeable output shafts for selectively reciprocating a cammed shaft for biasing elements shifting a clutch collar for the two-speed operation.Type: GrantFiled: October 2, 1978Date of Patent: June 9, 1981Assignee: Allis-Chalmers CorporationInventor: Gerardus M. Ballendux
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Patent number: 4245514Abstract: A transmission mechanism for vehicles comprising main clutch means having a primary clutch and a secondary clutch, primary and secondary propeller shafts for primary and secondary transmissions adapted to be intermittently rotated by the operation of said main clutch means, a first transmission system adapted to transmit the transmission power of said primary propeller shaft, a second transmission system adapted to transmit the transmission power of said secondary propeller shaft, and a reduction gearing for interlocking said secondary propeller shaft with said second transmission system. Further disposed is a transmission unit having a uni-directional clutch adapted to permit engine power to be transmitted only in the direction from said secondary propeller shaft to said primary propeller shaft.Type: GrantFiled: March 20, 1979Date of Patent: January 20, 1981Assignee: Kubota, Ltd.Inventors: Masayoshi Miyahara, Morimitsu Katayama
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Patent number: 4215586Abstract: A two speed auxiliary truck transmission utilizes two counter shafts. Two power take-off shafts, which are double ended (i.e., each power take-off shaft extends forward and rearward) are meshed to the gears on the main shaft and counter shaft. In this way, each of the power take-off shafts may be driven forward or rearward independently of the other power take-off shaft and whether the main shaft is in direct drive or underdrive, or in neutral. Likewise, the operation of the main drive shaft is independent of whether either of the power take-off shafts is reverse or neutral.Type: GrantFiled: February 1, 1979Date of Patent: August 5, 1980Inventor: Charles M. Morris, Sr.
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Patent number: 4215593Abstract: The invention concerns a transfer case having an input shaft and two output shafts. The transfer case comprises a planetary gear set operatively connected between the input shaft and the two output shafts. With a manipulation of a single shift lever operatively connected to a slide member, the transfer case can be shifted into one of the following three conditions, first condition in which input rotation speed on the input shaft is transmitted to both output shafts at a reduced rotation speed without any differential action between these output shafts; second condition in which the same rotation speed as that on the input shaft is transmitted to both output shafts without any differential action; and third condition in which the same rotation speed as that on the input shaft is transmitted to both output shafts with a differential action between the output shafts.Type: GrantFiled: October 18, 1977Date of Patent: August 5, 1980Assignee: Nissan Motor Company, LimitedInventors: Kinji Shono, Kunihiko Suzuki
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Patent number: 4141424Abstract: A speed change mechanism for a transmission comprises a main shaft provided with a plurality of power transmitting gears, and a propelling speed change gear system and a power takeoff speed change gear system supported on the opposite sides of the main shaft in parallel thereto. Each of the propelling and power takeoff speed change systems includes a speed change shaft freely rotatably carrying a suitable number of speed change gears meshing with the power transmitting gears on the main shaft at all times. The speed change shaft accommodates an axially slidable speed change rod which, when moved, forces pins outward or inward radially of the shaft to couple the speed change shaft to the corresponding speed change gear or disconnect the shaft from the gear. The freely rotatable speed change gears are held against axial movement, while axially slidable engaging members which are otherwise provided between the adjacent speed change gears are eliminated.Type: GrantFiled: September 28, 1976Date of Patent: February 27, 1979Assignee: Kubota Ltd.Inventors: Yoshinobu Murayama, Kenzo Sada, Mitsuhiro Kutomi