Return to neutral device for a hydraulic apparatus
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United States of America Patent
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Aug 6, 2013
Grant Date -
N/A
app pub date -
Aug 16, 2011
filing date -
Apr 2, 2007
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In a hydrostatic device using an axial piston pump, a yoke is mounted so that it contacts the movable swash plate of the hydrostatic transmission. The yoke is biased by a spring-type mechanism to force the swash plate to return to neutral, and the set position of the yoke plate may be externally adjusted. A bias or load arm rotatably fixed to a housing at one end and connected to a spring at the other end is engaged to the yoke to provide the return force to the yoke plate. The yoke plate may have two legs to provide a return to neutral force to the swash plate in either direction, or one leg to provide the return to neutral force in only a single direction.
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