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| Number | Title | Issue Date |
| 7464549 | Polyphase hydraulic drive system The present invention comprises an input drive system, which provides a plurality of phases of oscillating fluid flow, and an output drive system connected directly to the input drive system that is powered by the plurality of phases of oscillating fluid flow. The i... | 12/16/2008 |
| 6978612 | Utility device having hydraulic circuit for multi-function valve A utility vehicle or other utility device includes a hydraulic circuit that enhances operative capabilities of utility mechanisms with multiple hydraulic functionality. In some embodiments, multiple functionality can include powering of one or more hydraulic motor(s... | 12/27/2005 |
| 4936096 | Drive mechanism A drive mechanism for driving a shaft in unison with a wheel. The drive mechanism includes a plurality of slave pistons and a like plurality of master pistons. Each slave piston is paired with a master piston to establish a plurality of paired pistons. A ... | 06/26/1990 |
| 4918920 | Hydraulic remote control device for controlled members, such as external rear view mirrors on vehicles The device comprises a manipulator (148) whose body (149) houses deformable positioning transmitter bags (145 to 147) each connected by a corresponding hydraulic circuit to a positioning receiver comprising a deformable bag (130 to 132, 133 to 135), whose... | 04/24/1990 |
| 4781025 | Apparatus for the hydraulic transmission of mechanical power and for the simultaneous multiplication of the speed of rotation The apparatus has at least one cam plate driven by a drive shaft in a piston pump or hydraulic pressure generator. The cam plate has a cam track or surface with at least two substantially sinusoidal protrusions and recesses or depressions on its circumfer... | 11/01/1988 |
| 3938332 | Hydraulic coupling mechanism This hydraulic coupling mechanism consists of at least a pair of pressure transmitting cylinders which are operated in a predetermined sequence, at least a pair of pressure receiving cylinders synchronously operated by the pressure transmitting cylinders ... | 02/17/1976 |
