Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 7334403 | Brake valve for a hydraulic transmission The invention relates to control of a hydrostatic gearbox, comprising a hydraulic pump (2), provided for pumping in a first pump-side main line (5a) or a second pump-side main line (6a). The hydrostatic gearbox further comprises a ... | 02/26/2008 |
| 7309301 | Transaxle having a differential mechanism and on-demand transfer clutch A powertrain for transmitting power to the drive wheels of a vehicle includes a transaxle case containing a transaxle drive mechanism for producing variable ratios of a speed of its output and a speed of its input, a differential mechanism for transmitting power bet... | 12/18/2007 |
| 7299891 | Hydraulic drive mechanism for mobile vehicles To make operating a hydraulic drive mechanism above its admissible maximum rotational speed without separating the mechanical connection to the drive wheel possible, the motor (1) is adjusted in displacement to almost no displacement and the pressure-medium s... | 11/27/2007 |
| 7293841 | Hydraulic motor and brake control system and method of controlling the same A hydraulic control system for operating at least one hydraulic motor and at least one hydraulic brake. In one specific embodiment of the invention, the hydraulic motor and brake are part of an industrial vehicle. ... | 11/13/2007 |
| 7249806 | Hydraulic motor and brake control system and method of controlling the same A hydraulic control system for operating at least one hydraulic motor and at least one hydraulic brake. In one specific embodiment of the invention, the hydraulic motor and brake are part of an industrial vehicle. ... | 07/31/2007 |
| 7240488 | Cruise control and neutral return mechanism for a hydrostatic transmission A control arm is coupled to a control shaft of a hydraulic pump. A friction shaft extends parallel to the control shaft and is slidably moveable within an arcuate-shaped hole in the control arm. A stop plate is movably supported by the control shaft and the friction... | 07/10/2007 |
| 7219967 | Brake system for a vehicle driven by at least one hydraulic motor fed in a closed circuit A method of operating a brake system for a hydraulic motor, by feeding the hydraulic motor with at least one pump having a variable cubic capacity, in a closed circuit, providing a friction brake to brake the motor, providing a brake controller that controls an amou... | 05/22/2007 |
| 7180720 | Failure detection device for hydraulic motor and hydraulic drive vehicle A failure detection device for a hydraulic motor according to the present invention comprises a hydraulic pump 3 that is driven by a prime mover 2; a hydraulic motor 1 for traveling that is driven by hydraulic oil discharged from the hydraulic p... | 02/20/2007 |
| 7174996 | Hydraulic fluid feeder Supplying fluids different in pressure from one end of a revolving shaft without providing a diagonal hole in the revolving shaft for supply holes for feeding hydraulic fluid and lubricating oil. The time for manufacturing and the cost of providing a hydraulic fluid... | 02/13/2007 |
| 7163481 | Driving force transmitting system A manual valve is provided between a mechanical oil pump and a clutch of an automatic transmission device for connecting an engine with the automatic transmission device, a first check valve is provided in a passage connecting the mechanical oil pump with the manual... | 01/16/2007 |
| 7121092 | Bypass mechanism for a hydraulic drive device A pair of zero-turn, hydrostatic transaxles (HZTs) that may be joined to form an integrated, zero-turn, hydrostatic transaxle. Each of the hydrostatic transaxles are further comprised of a casing carrying a hydraulic pump driven by an input shaft, a hydraulic motor ... | 10/17/2006 |
| 7086226 | Construction machine In order to provide a construction machine by which energy regeneration can be performed reliably and battery and electrical power generator can be miniaturized, a construction machine has an engine, a hydraulic pump driven by the engine, and an actuator driven by d... | 08/08/2006 |
| 7077221 | Hydrostatic pump destroke braking mechanism A mechanism that interconnects the service brakes of a hydrostatically driven tractor with the hydrostatic pump to more effectively slow or stop the tractor, for example when towing a trailer. The service brakes are connected to a control servo on the hydrostatic pu... | 07/18/2006 |
| 7055318 | Drive mechanism A drive mechanism is disclosed which includes a hydraulic pump whereby at least two hydraulic motors may be supplied with pressure medium. The drive mechanism in accordance with the invention has on the meter-in side or on the meter-out side of each hydraulic motor ... | 06/06/2006 |
| 7017343 | Hydrostatic transmission with pressure regulation means A hydrostatic transmission comprising a housing formed with a fluid sump, a center section disposed within the fluid sump, a hydraulic pump mounted on the center section, and a hydraulic motor mounted on the center section. A fluid passage is formed in the center se... | 03/28/2006 |
| 7011182 | Axle driving apparatus A housing cannot be made compact by only securing a space corresponding to a reservoir tank at the upper part of the housing, and the space at the upper part of the housing cannot be utilized if the reservoir tank is integrally provided to the upper part of the hous... | 03/14/2006 |
| 6926372 | Hydraulic motor device with displacement selector and a braking system Hydraulic motor drive apparatus having a cubic capacity selector (16) which has at least two positions, control means for controlling the selector, which means comprise a hydraulic control chamber (18) suitable for being fed with fluid via a control du... | 08/09/2005 |
| 6923091 | Internal combustion engine with hydraulically operated automatic transmission An internal combustion engine with a hydraulically operated automatic transmission includes a crankcase that is divided on a plane perpendicular to a crankshaft and an outer face of the crankcase in a direction of the crankshaft is covered with a crankcase cover. A ... | 08/02/2005 |
| 6915872 | Cruise control system A cruise control system for use in connection with a control arm linked to a swash plate that is moveable to provide the swash plate with a plurality of non-discrete angular orientations to affect fluid displacement of a hydraulic pump and a return to neutral mechan... | 07/12/2005 |
| 6880333 | Control assembly for a hydraulic device A control system for a vehicle having a hydraulic drive device such as a hydrostatic transmission or integrated hydrostatic transaxle with a return to neutral feature and a brake mechanism. The system includes a pair of linkages connected to the vehicle brake pedal;... | 04/19/2005 |
| 6804958 | Hydrostatic transmission bypass latch A hydrostatic transmission may be placed in a free-wheeling state by rotating a bypass actuator that lifts the motor from a motor running surface whereby hydraulic fluid flows into a transmission cavity. A bypass arm connected to the bypass actuator and to a bypass ... | 10/19/2004 |
| 6695573 | Hand-held turbine power tool A turbine tool design with a number of innovative aspects which may be incorporated into the tool individually or as a group. One aspect relates to improved speed control, based on an elastically deformable governor member disposed within the rotating imp... | 02/24/2004 |
| 6675576 | Hydraulic circuit having a hydraulic motor equipped with a brake for a vehicle suitable for being towed A hydraulic circuit for the hydrostatic transmission of a vehicle, said hydraulic circuit comprising at least one hydraulic motor, two main ducts, a parking brake having brake means, brake release control means suitable for feeding the brake release chamb... | 01/13/2004 |
| 6651427 | Hydrostatic transmission bypass latch A hydrostatic transmission may be placed in a free-wheeling state by rotating a bypass actuator that lifts the motor from a motor running surface whereby hydraulic fluid flows into a transmission cavity. A bypass arm connected to the bypass actuator and t... | 11/25/2003 |
| 6619184 | Hydraulic radial piston motor In order to reduce the shock that occurs in downshifting and up-shifting a hydraulic radial piston engine, a valve (1), which controls the displacement of the radial piston engine, is reversed with throttling. In order to prevent the throttled reversal fr... | 09/16/2003 |
| 6564549 | Displacement control device for hydraulic pump and brake control device for hydraulic motor In a direct drive type hydraulic pump, the displacement of the hydraulic pump is forcedly changed to a desired displacement according to an instruction of a channel different from a usual instruction, thereby changing to a desired displacement quickly wit... | 05/20/2003 |
| 6543222 | Braking system for braking a rotor relative to a stator A braking system (S) for braking a rotor (5, 9, 106) relative to a stator (1C, 1'C), said system comprising two series of brake disks (102, 104) secured respectively to the stator and to the rotor and disposed in a disk enclosure (100). The system further... | 04/08/2003 |
| 6484497 | Neutral brake A neutral brake system for use in a hydrostatic transmission to automatically apply a brake when the hydrostatic transmission is shifted to neutral. The neutral brake system includes a hydraulically-released, spring-activated brake mechanism in direct flu... | 11/26/2002 |
| 6481461 | Hydraulic pilot control A hydraulic pilot control system having two control outputs to which a control pressure can be applied and having a hydraulic pilot controller, which has a handle which can be pivoted from a neutral position in a first direction and in a second direction,... | 11/19/2002 |
| 6439364 | Inching braking system There is disclosed an inching braking system wherein a brake piston of a brake valve assembly initiates an actuation movement of the brake piston by way of an actuator only after a predetermined stroke of a driving member for an inching piston.... | 08/27/2002 |
| 6381957 | Vehicle transmission An engine crankshaft 2 and a wheel drive shaft 5 are connected through a static hydraulic infinitely variable transmission 3. The static hydraulic infinitely variable transmission 3 has a hydraulic pump 20 extending to an engine side of the transmission a... | 05/07/2002 |
| 6374604 | Hydrostatic transmission bypass latch A hydrostatic transmission may be placed in a free-wheeling state by rotating a bypass actuator that lifts the motor from a motor running surface whereby hydraulic fluid flows into a transmission cavity. A bypass arm connected to the bypass actuator and t... | 04/23/2002 |
| 6314728 | Hydraulic door operator A hydraulic door opener provides a simplified mechanism for two-speed operation and for controlling the release of a brake that normally holds the door against movement. The mechanism includes a bypass valve between a fluid reservoir feeding the pump and ... | 11/13/2001 |
| 6276134 | Apparatus for controlling a plurality of hydraulic motors and a clutch An apparatus, for controlling a plurality of hydraulic motors and a clutch for driving a drive shaft, can prevent a speed change shock and a load slip of a hydraulic motor as well as making a structure simple. The apparatus includes: a first volume variab... | 08/21/2001 |
| 6250077 | Hydraulic continuously variable transmission for use on vehicle A hydraulic continuously variable transmission for use on a vehicle comprises a hydraulic variable pump, which is driven by an engine, and a hydraulic variable motor, which is driven by oil discharged from the hydraulic variable pump to drive wheels. In a... | 06/26/2001 |
| 6135580 | Hydraulically actuated power braking apparatus and method for use with a moving vehicle A braking apparatus includes a brake cylinder having a first brake opening and a second brake opening defined therein. The first brake opening is adapted to allow a flow of brake fluid to enter the brake cylinder and the second brake opening is adapted to... | 10/24/2000 |
| 6067795 | Hydraulic continuously variable transmission for use on vehicle A hydraulic continuously variable transmission for use on a vehicle comprises a hydraulic closed circuit, first and second pressure controlling means, brake operation detecting means and deceleration detecting means. The hydraulic closed circuit includes ... | 05/30/2000 |
| 6062022 | Continuously variable hydrostatic transmission including 1:1 ratio lock-up clutch In a continuously variable hydrostatic transmission including a hydraulic pump unit driven by an input shaft, a grounded hydraulic motor unit, and an intermediate, wedge-shaped swashplate for developing torque on an output shaft in response to pumped exch... | 05/16/2000 |
| 6050091 | Brake device for oil hydraulic motor A braking apparatus for a hydraulic motor (20) having a rotary component (21) includes a rotary side friction plate (22) coupled to the rotary component of the hydraulic motor, a fixed side friction plate (23) coupled to a fixed component of the hydraulic... | 04/18/2000 |
| 6038859 | Hydraulic fluid circuit having a hydraulic motor and a three-position selector for selecting the circulation of fluid This invention relates to a hydraulic fluid circuit comprising a reversible hydraulic motor, a braking device, two principal conduits respectively connected to the two principal supply and exhaust ports of the motor, a principal selector adapted to occupy... | 03/21/2000 |
