Transmission for power take-off

Planetary gear transmission systems or components – Fluid drive or control of planetary gearing – Fluid pump and motor in one of plural paths to or from...

Reexamination Certificate

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Details

C475S072000

Reexamination Certificate

active

11029683

ABSTRACT:
A PTO transmission transmits power from an engine-driven shaft to a PTO shaft. The transmission includes a variable displacement hydraulic pump driven by the engine-driven shaft. A planetary transmission unit includes a ring gear driven by the engine-driven shaft, a planet carrier drivingly coupled to the PTO shaft, planet gears rotatably mounted on the planet carrier and in meshing engagement with the ring gear, and a sun gear in meshing engagement with the planet gears and drivingly connected to a fixed displacement variable speed hydraulic motor hydraulically driven by the pump. A one-way clutch is coupled to the sun gear. The one-way clutch allows the sun gear to rotate in only one direction so that at rated engine speed all power is transmitted mechanically.

REFERENCES:
patent: 4519485 (1985-05-01), Greenwood
patent: 5682315 (1997-10-01), Coutant et al.
patent: 6416437 (2002-07-01), Jung
patent: 6485387 (2002-11-01), Goodnight et al.
patent: 6692395 (2004-02-01), Rodeghiero et al.
patent: 6986725 (2006-01-01), Morscheck
patent: 2003/0205422 (2003-11-01), Morrow et al.
patent: 19749074 (1999-05-01), None
patent: 57144129 (1982-09-01), None
patent: 2001315541 (2001-11-01), None

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