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| Number | Title | Issue Date |
| 7887449 | Speed-change transmission apparatus A speed-change transmission apparatus for effecting a speed-changing on an engine drive force with utilizing a continuously variable speed-change device, a plurality of planetary transmission mechanisms and a plurality of clutches is constructed to be capable of eff... | 02/15/2011 |
| 7588510 | Hydro-mechanical transmission and valve assembly A hydro-mechanical transmission for an agriculture vehicle, such as a tractor. The transmission includes an input shaft, a hydrostatic unit driven by the input shaft, a mechanical transmission driven by the hydrostatic unit and/or the input shaft, and a valve assemb... | 09/15/2009 |
| 7530914 | Hydromechanical transmission A hydromechanical transmission having an input member, a hydrostatic transmission, and a mechanical transmission. The mechanical transmission includes first and second synchronizing assemblies for synchronizing at least one of a first or second output member with a ... | 05/12/2009 |
| 7530913 | Multi-range hydromechanical transmission A hydromechanical transmission having an input member, a hydrostatic transmission, and a mechanical transmission. The mechanical transmission includes first and second synchronizing assemblies for synchronizing at least one of a first or second output member with a ... | 05/12/2009 |
| 7361111 | Power branching transmission for motor vehicles A power branching transmission suitable for motor vehicles having an internal-combustion engine which drives an input shaft of the power branching transmission has several branches comprising at least one power shift transmission with a number of gears and has an ou... | 04/22/2008 |
| 7354368 | Method and means for shifting a hydromechanical transmission A method for achieving high quality shifts with one hydraulic unit near zero displacement when using dog clutches. This method includes selecting the proper displacement and vocation (whether the hydrostatic unit works as a pump or motor) of a low displacement hydra... | 04/08/2008 |
| 7337869 | Hydraulic hybrid vehicle with integrated hydraulic drive module and four-wheel-drive, and method of operation thereof A vehicle includes an integrated drive module coupled to an axle thereof. The module includes a hydraulic motor configured to provide motive power at an output shaft, and a differential for distributing the motive power to right and left portions of the axle. The hy... | 03/04/2008 |
| 7335125 | Continuously variable transmission The present invention has a dual sun planetary gearset, as well as a dog clutch or other type of shifting device, which allows for the hydrostatic unit to operate in a reverse direction in similar fashion to how it operates in a forward direction, thereby increasing... | 02/26/2008 |
| 7150693 | Hydrostatic transmission and power train for vehicle A hydrostatic transmission for vehicle interposed in a drive-power transmission path between a driving power source and a driving axle for non-stepwisely changing the speed of the vehicle includes an HST housing; a hydraulic pump unit having a pump shaft with first ... | 12/19/2006 |
| 7143845 | Drilling apparatus with anti-vibration inertial body A blast-hole drilling rig includes a carriage, a mast disposed on the carriage, and a rotary head mounted on the mast for up-and-down movement. The rotary head includes: a housing forming an internal chamber, a hydraulically driven motor, and a rotation transmission... | 12/05/2006 |
| 7089824 | Traveling transmission apparatus for work vehicle A traveling transmission apparatus for a work vehicle is disclosed. The apparatus includes a stepless change-speed unit receiving power from an engine, a gear transmission mechanism receiving power from the stepless change-speed unit and disposed rearwardly of the e... | 08/15/2006 |
| 7070531 | Hydromechanical transmission A hydromechanical transmission having a continuously variable transmission function and occupying a small area for installation is provided. For this purpose, the transmission includes a driving source (3), a planetary gear speed reducer (5) connected ... | 07/04/2006 |
| 7063638 | Continuously variable hydro-mechanical transmission A transmission for use with a power source and a load includes a primary sun gear adapted to be coupled to the power source, a hydrostatic power unit including a pump coupled to a motor, a ring gear driven by the motor, a secondary sun gear coupled to a first output... | 06/20/2006 |
| 6997838 | Parallel hydromechanical underdrive transmission An axial piston pump and an axial piston motor, mounted in a housing each have a rotating element and a non-rotating element. Each non-rotating element is mounted for tilting movement about axes transverse to the axes of rotation of the rotating element, on trunnion... | 02/14/2006 |
| 6945041 | Bent axis hydrostatic module with multiple yokes A bent axis hydrostatic module, comprising: a frame, a pair of parallel laterally spaced shafts rotatably supported by the frame and directed outwardly from the frame in the same direction. Two yokes are pivotally mounted about parallel axes on the frame. A hydrosta... | 09/20/2005 |
| 6926109 | Hydrostatic motor drive mount A tracked vehicle includes a track operatively connected to a driveshaft. An output shaft of a hydrostatic motor is selectively rotationally engaged with the driveshaft via a clutch mechanism. When the clutch mechanism is engaged, the motor drives the track. When th... | 08/09/2005 |
| 6904997 | Compact vehicle transmission A compact vehicle has a frame and an operating position thereon for at least one rider. An engine having a drive shaft is on the frame, as are a plurality of operational wheels. A transmission operatively couples the engine and the wheels. The transmission is a hydr... | 06/14/2005 |
| 6852056 | Continuously variable hydro-mechanical transmission A transmission for use with a power source and a load includes a primary sun gear adapted to be coupled to the power source, a hydrostatic power unit including a pump coupled to a motor, a ring gear driven by the motor, a secondary sun gear coupled to a first output... | 02/08/2005 |
| 6626785 | Hydromechanical transmission A hydromechanical transmission has a housing with a planetary gear system. A power output is operatively connected to the gear system for deriving power therefrom. A control is provided for operating the gear system in either a hydromechanical or a hydros... | 09/30/2003 |
| 6565471 | Continuously variable hydro-mechanical transmission A continuously variable hydro-mechanical transmission. The transmission includes a transmission housing and a hydrostatic power unit associated with the housing. The hydrostatic power unit includes a pump coupled to a motor with the hydrostatic power unit... | 05/20/2003 |
| 6485387 | Apparatus and method for determining the output speed of a hydrostatic unit in a hydro-mechanical transmission The output speed of a hydrostatic unit in a transmission is determined using a pair of variable reluctance sensors, one on a gear driven by the hydrostatic unit output and the other on the carrier of the planetary system. One of the two sensors will alway... | 11/26/2002 |
| 6338689 | Hydromechanical transmission A hydromechanical transmission includes a hydrostatic transmission driven by an engine and drivingly connected to a planetary gear set. A plurality of clutches are associatable with the ring gear or elements of the planetary gear set for establishing a co... | 01/15/2002 |
| 6216560 | Axle driving apparatus An axle driving apparatus in which a hydraulic pump and a hydraulic motor which constitute a hydrostatic transmission are disposed on a center section. In a horizontal portion of the center section are provided a pair of linear oil passages in parallel to... | 04/17/2001 |
| 6039666 | Hydraulic and mechanical transmission apparatus A power of an input shaft driven by an engine is divided by a power dividing device and transmitted to first and second output shafts and a hydraulic pump of a hydrostatic continuously variable transmission is driven by the first output shaft, whereas a h... | 03/21/2000 |
| 5997426 | Variable speed power transmission apparatus A variable speed power transmission apparatus having an epicycle reduction gear device that has planetary gears whose shafts are supported at equal intervals circumferentially thereof by carriers fixed to an output shaft thereof. The planetary gears are m... | 12/07/1999 |
| 5865700 | Hydro-mechanical transmission A hydro-mechanical transmission for an agricultural work vehicle is provided including a motor, a clutch and a differential assembly. The clutch which is rotatably supported by a housing includes first and second input shafts and a first output shaft. The... | 02/02/1999 |
| 5820505 | Variable ratio transmission A variable ratio transmission includes a differential gear assembly coupled to three separate shafts. One of the shafts is coupled to a prime mover and operates as an input shaft to the differential gear assembly. Another of the shafts is connected to a l... | 10/13/1998 |
| 5807199 | Hydro-mechanical gearbox The invention relates to a hydro-mechanical gearbox with a hydraulic pump, a hydraulic motor and a set of planetary gears, whereby the pressure line of the hydraulic pump is conducted back, via the inserted hydraulic motor, to the suction line of the hydr... | 09/15/1998 |
| 5803856 | Hydraulic/mechanical power transmitting system In a hydraulic/mechanical transmitting system, an input shaft of a power dividing device and a power collecting shaft coupled to a motor cylinder are disposed coaxially with each other. The power dividing device includes a first output member which is car... | 09/08/1998 |
| 5785623 | Hydraulic/mechanical transmission A hydraulic/mechanical transmission device for providing variable speed change ratios with a decreased number of parallel shafts and a simplified and compact structure. A hydrostatic continuously variable transmission includes a hydraulic pump 24 with a p... | 07/28/1998 |
| 5766107 | Continuous hydrostatic power division transmission A continuous hydrostatic-mechanical power division transmission has at least two operating ranges between which it is switched by shift elements, with a first, mechanical part (II) including a planetary differential gear (13) and a second, hydrostatic par... | 06/16/1998 |
| 5667452 | Split torque transmission A split torque transmission includes a hydrostatic transmission and a mechanical transmission both being driven by an engine. The output of the hydrostatic transmission and the mechanical transmission are both selectively coupled to a machine through a fi... | 09/16/1997 |
| 5616091 | Integrated hydro-mechanical multiple lockup transmission An integrated hydro-mechanical transmission having the capability of achieving continuous variability from zero to maximum in both the forward and reverse vehicle directions and having the additional capability of automatically locking up for direct mecha... | 04/01/1997 |
| 5496223 | Load shift transmission with stepless hydrostatic gearing A load shift transmission with stepless hydrostatic gearing comprising: a hydrostatic transmission having a displacement machine with an adjustable volume and a displacement machine with a constant volume; a five-shaft planetary gear transmission having: ... | 03/05/1996 |
| 5421785 | Method of and device for power transmission Method of and device for power transmission using a circulating fluid under pressure delivered from a hydraulic pump in proportion to the number of revolutions of an engine output shaft. In order to intermittently transmit a rotational force of an engine ... | 06/06/1995 |
| 5203747 | Integrated hydro-mechanical transmission An integrated hydromechanical transmission capable of achieving continuous variability from maximum forward, through zero, to full reverse, and vice versa. The unit will achieve significantly higher rates of efficiency than current hydrostatic transmissio... | 04/20/1993 |
| 5186692 | Hydromechanical orbital transmission A continuously variable automotive transmission (10, 30, 110, and 130) uses an orbital drive having an engine input to an orbit shaft (21, 41) orbiting a cluster gear (25, 45) around a control gear (27, 47) and an output gear (26, 46) meshed with the clus... | 02/16/1993 |
| 5052987 | Stepless hydrostatic-mechanical transmission A stepless hydrostatic mechanical transmission between a prime mover and a power output train in which an epicyclic differential is incorporated in the transmission and includes at least four shafts, a large and a small sun wheel, two planet wheels in mes... | 10/01/1991 |
| 4983149 | Nonstep speed change gear Disclosed is a nonstep speed change gear capable of selecting low speed mode and high speed mode by the low speed side clutch and high speed side clutch, comprising a differential mechanism having a low speed side mechanical transmission line and a high s... | 01/08/1991 |
| 4799401 | Extended range hydromechanical steering transmission A simplified range changing mechanism for an infinitely variable, split output, synchronously shifting hydromechanical steering transmission having integral steering and four forward ranges wherein the first, second and third forward ranges have progressi... | 01/24/1989 |
