About 53 results
https://drivepatents.com/patents/1008432 · 19 Oct 2011
The finisher has an electronic control unit pre-determining reference-differential pressure between pump pressure (Pp) downstream of an adjusting pump (12) and upstream of control valves (14a-14d) i.e. 2/2-proportional solenoid valves, and maximum load pre...
https://drivepatents.com/patents/1009753 · 31 Aug 2011
The device (20) has a main pump (24) i.e. rotary pump, serving to feed hydraulic motors (26A, 26B) with fluid. An auxiliary pump (25) serves to maintain a minimum fluid pressure in an auxiliary duct. The main pump and the auxiliary pump are actuated jointl...
https://drivepatents.com/patents/1011687 · 22 Jun 2011
A hydraulic motor unit according to the present invention includes an electric motor having an electric motor main body that is electrically controlled, an electric motor case that accommodates the electric motor main body and an electric motor main body o...
https://drivepatents.com/patents/1068939 · 22 Mar 2006
Each of the driven wheels (4, 6) of the agricultural device is connected to the differential (14) of a hydraulically operated transmission unit (15) with a drive shaft (13). When the control lever (10) is moved to the front the speed is increased when driv...
https://drivepatents.com/patents/1069417 · 8 Mar 2006
A hydrostatic transaxle (2), comprises: a transaxle casing; a pair of left and right axles (8) disposed in the transaxle casing; a pair of hydraulic motors (M2,M3) for driving the respective axles (8); and a pair of left and right steerable drive wheels (9...
https://drivepatents.com/patents/1073103 · 26 Oct 2005
A hydraulic drive system (11) of the type including a hydrostatic pump-motor unit (35) having a pumping mode in which the unit pressurizes, from its port (A), a high pressure accumulator (41), and a motoring mode, in which the unit is driven by pressurized...
https://drivepatents.com/patents/1076424 · 29 Jun 2005
There is provided a driving device of an electric car, exactly selecting drive wheels of the electric car in accordance with road circumstances. In the electric car having four or more wheels, all wheels (1 to 4) have driving motors (5 to 8) placed therein...
https://drivepatents.com/patents/1077154 · 8 Jun 2005
A control device for a motor-driven 4WD vehicle comprises a 42v alternator (motor-generator) driven by an engine to generate three-phase AC power with 42 volts, a set-up and set-down inverter rectifying and setting down three-phase AC power, generated by t...
https://drivepatents.com/patents/1077293 · 1 Jun 2005
A control device controlling a motor-driven 4WD vehicle, where either of front wheels and rear wheels are driven by an engine and the others are driven by an AC motor, is provided with an electric power generator driven by an engine to generate first three...
https://drivepatents.com/patents/1078197 · 4 May 2005
The drive has at least one hydraulic pump (3) and several hydraulically operated hydraulic motors (6-9) connected to the pump, whereby each motor has an associated revolution rate sensor (20-23) connected to a control unit (24). A braking device (26-29) th...