Long life telescoping gear pumps and motors
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United States of America Patent
Stats
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Jul 10, 2012
Grant Date -
Feb 14, 2008
app pub date -
Sep 7, 2007
filing date -
Apr 9, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A telescoping gear pump comprises a bolt, a Bellville washer, a wear plate, a seal housing, a seal spring, a spur gear including a wear lobe, a seal ring and a case drain path, a shaft, a ring gear including a wear lobe, seal ring, and a case drain path, seal, a bolt assembly including a Bellville washer and bolt, and a pressure plate. The assembly provides pressure to a fluid to maintain a seal within a telescoping pump/motor during operation. The wear lobe reduces wear while maintaining fluid pressure.
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