Hydraulic motor with adjustable flow volume
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United States of America Patent
Stats
-
Nov 8, 1983
Grant Date -
N/A
app pub date -
Mar 15, 1982
filing date -
Mar 13, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A radial or axial piston type hydraulic motor has a plurality of cylinders connected by pressure conduits to a pressure fluid distributor. A check valve spring-biased in closing direction is built in at least one pressure conduit and has a first surface portion acted upon by pressure from the cylinder, a second surface portion which is exposable to pressure fluid from the distributor to act on the check valve either in opening direction or in closing direction and a third surface portion exposed to a control pressure in opening direction. The second surface portion being at least as large as the first surface portion and larger than the third surface portion, and the combined area of the first and second surface portions exceeding the surface area of the second surface portion.
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