Hydromechanical load-splitting drive

Details Hydromechanical load-splitting drive Hydromechanical load-splitting drive

1978-12-15

1981-04-07

Caun, Peter M.

Machine element or mechanism

Elements

Gear casings

F16H 4704

Patent

active

042598818

ABSTRACT:
A hydromechanical drive comprises an input shaft connected to the input side of a hydrostatic transmission having an output side and comprising a pair of hydraulically interconnected hydraulic machines one of which is of variable volume to vary the transmission ratios between its input and output sides. A cam-type summing transmission has one input element connected to the output side of the hydrostatic transmission, another input element connected to the input shaft of the drive, and an output element connected to the output shaft of the drive. A brake is connected to the output side of the hydrostatic transmission for retarding same and thereby reducing the load on the hydrostatic transmission. This brake may be of the torque-converter type that applies increasing resistance to rotation as rotation speed increases.

REFERENCES:
patent: 3180180 (1965-04-01), Helfer et al.
patent: 3396607 (1968-08-01), Ross
patent: 3603176 (1971-09-01), Tipping
patent: 3665787 (1972-05-01), Wilkinson
patent: 3665788 (1972-05-01), Nyman
patent: 3748924 (1973-07-01), Cross et al.
patent: 3851544 (1974-12-01), Herman
patent: 3903756 (1975-09-01), Hamma

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