Twin countershaft transmission and improved power take-off arran

Details Twin countershaft transmission and improved power take-off arran Twin countershaft transmission and improved power take-off arran

1995-05-17

1996-02-20

Bonck, Rodney H.

Machine element or mechanism

Gearing

With fluid drive

74 1586, 747321, 74331, F16H 4700

Patent

active

054920345

ABSTRACT:
A change gear device (11) is disclosed of the type including a pair of substantially identical countershafts (27,29). The device includes a hydraulic PTO comprising a pair of fluid displacement mechanisms (71,73), each of which comprises a gerotor pump, and each of which receives input torque from one of the countershafts, by means of a pair of PTO input shafts (61,63), respectively. The PTO input shafts are clutched to the respective countershafts. The pressurized fluid output of the two fluid displacement mechanisms (71,73) is combined at a port (133), or other suitable location. Preferably, the two displacement mechanisms (71,73) are substantially identical, such that equal torques are transmitted through the transmission countershafts (27,29) while the hydraulic PTO of the invention is in operation.

REFERENCES:
patent: 2962915 (1960-12-01), Wiggermann
patent: 3335616 (1967-08-01), Perkins
patent: 4674358 (1987-06-01), Nishimura
patent: 4754665 (1988-07-01), Vandervoot
patent: 4784019 (1988-11-01), Morscheck
patent: 4974472 (1990-12-01), Nishimura et al.

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