Hydraulic motor

Details Hydraulic motor Hydraulic motor

1993-08-05

1995-01-17

Look, Edward K.

Motors: expansible chamber type

With motive fluid valve

Independent control of bypass between opposed working chambers

418206, 91461, F15B 1108

Patent

active

053817230

ABSTRACT:
The invention relates to a hydraulic motor having a motor body comprising a first and a second part (71, 72) which are joined to each other in a parting plane (74). A motor chamber (2) with driving cogwheels (10, 11) is formed by borings (84, 85), which extend from the parting plane into a certain depth in at least one of the first and second parts (71, 72). A by-pass conduit (15) is provided between the inlet and outlet hydraulic conduits of the motor chamber. In the by-pass conduit there is provided a main valve (20) for closing and opening the by-pass conduit for starting and for stopping the hydraulic motor, respectively. The by-pass conduit is formed by portions (16, 17) of a first (100) and a second (101) connection between the parting plane (74) and the inlet conduit (5), and between the parting plane (74) and the outlet conduit (7), respectively, and by a cross link (18) between the first and second connections (100, 101).

REFERENCES:
patent: 3175468 (1965-03-01), Miller
patent: 3614275 (1971-10-01), Eibsen
patent: 4571941 (1986-02-01), Aoyagi et al.
patent: 4645439 (1987-02-01), Way
patent: 4676141 (1987-06-01), Park
patent: 4955283 (1990-09-01), Hidaka et al.

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