Rotary fluid pressure device and improved integral brake assembly
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United States of America Patent
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-
Jun 1, 2004
Grant Date -
N/A
app pub date -
Feb 3, 2003
filing date -
Feb 3, 2003
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A gerotor motor including a brake package, and a method for setting the load holding torque of the brake package. The endcap assembly (21) defines a set of internal threads (85) disposed adjacent a brake package piston member (75). An enclosure member (87) defines a spring seat (115) for a set of Belleville washers (105), and defines a set of external threads (88) engaging the internal threads (85). Upon assembly of the motor and brake package, a resistance load is applied to a motor output shaft (43) corresponding to a desired load holding torque. The motor is pressurized sufficiently to rotate the output shaft in opposition to the resistance load. The enclosure member (87) is rotated so that it moves axially in a direction to increase the bias preload on the Belleville washers (105) until the output shaft (43) no longer rotates.
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