Oil pump by-pass valve for an internal combustion engine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 8, 2002
Grant Date -
N/A
app pub date -
Jul 18, 1997
filing date -
Jul 18, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A fluid pump includes a pump housing with a pump cavity in which a first and second gear are positioned for pumping fluid. The first gear is operably connected to a motor for rotation and the second gear is rotatably mounted to a shaft for geared rotation with the first gear. Fluid inlet and outlet ports are located in communication with the pump cavity and adapted respectively for connection with a source of fluid and a discharge means. A bypass valve is positioned between the inlet and outlet ports to selectively permit fluid pumped between the inlet and outlet ports to pass through it when the outlet port is flow restricted. The bypass valve is normally closed to fluid pumped by said first and second gears to flow from said inlet port to said outlet port, but is opened to permit flow to cavitate when not desired to pump.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully