Hydraulic pumps
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United States of America Patent
Stats
-
Mar 3, 1981
Grant Date -
N/A
app pub date -
Jun 5, 1979
filing date -
Jun 5, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A gear pump for use particularly with the new type water hydraulic fluids. A gear track insert is located in the gear housing pressure-generating zone to protect the gear housing from abrasion and high pressure wear. The gear track insert is replaceable, when required, thereby saving the more expensive cost of replacing the gear housing. Isolation seals are of a new design to eliminate high pressure from leaking into the low pressure zone of the pump. These seals also control the pressure plate to gear face load to minimize wear and leakage.
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