Machine element or mechanism – Gearing – Plural prime movers selectively coupled to common output
Patent
1992-11-16
1995-03-07
Wright, Dirk
Machine element or mechanism
Gearing
Plural prime movers selectively coupled to common output
74665B, F16H 3706
Patent
active
053947711
ABSTRACT:
The invention relates to a hydrostatic drive, preferably for an earth-moving vehicle, such as a wheel loader, comprising two reciprocating-piston rotary motors of the inclined-axis or inclined-disk type. The reciprocating-piston rotary motors have an angle of inclination which are adapted to be controlled to decrease toward zero as the torque decreases and the velocity increases, and which each is coupled to an input shaft of a shiftable transmission. The shiftable transmission comprises two input shafts, which are coupled to two reciprocating-piston rotary motors, and each input shaft is adapted to be coupled to a common output shaft by means of one of at least two shiftable gear stages.
REFERENCES:
patent: 2380889 (1945-07-01), Waseige
patent: 3503278 (1970-03-01), Livezey
patent: 3734257 (1973-05-01), Eastcott et al.
patent: 3757912 (1973-09-01), Ball, Jr. et al.
patent: 4315439 (1982-02-01), Grachtrup
patent: 4392393 (1983-07-01), Montgomery
patent: 4819507 (1989-04-01), Pescher
Hydrotatic Transmission Systems, by J. Korn, Published 1969, pp. 4-6.
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