Hydraulic pump with remote control equipment

Details Hydraulic pump with remote control equipment Hydraulic pump with remote control equipment

1975-01-27

1977-01-25

Freeh, William L.

Pumps

Three or more cylinders arranged in parallel, radial, or...

Motor driven

417319, 74346, F04B 900

Patent

active

040048632

ABSTRACT:
The pump comprises a casing containing the pump shaft. The casing includes a lateral housing containing an axially slidable shaft. The slidable shaft carries a first pinion, while the pump shaft carries a second pinion which is firmly connected thereto. The slidable shaft is held in a first extreme position by a spring and can be axially displaced, against the force of the spring, to a second extreme position by pneumatic control means. The control means include a piston portion which forms part of the slidable shaft. One of the said positions is a working or pumping position in which there is a driving contact, e.g. between the sliding shaft and a driving shaft, between the first pinion and a driving pinion, or between a first and second pinion.

REFERENCES:
patent: 1242474 (1917-10-01), Riley
patent: 2010556 (1935-08-01), Nenninger
patent: 2481441 (1949-09-01), Parsons

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