Pump with a resilient seal
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 3, 2015
Grant Date -
Feb 9, 2012
app pub date -
Apr 21, 2010
filing date -
Apr 21, 2009
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A pump comprises a housing, with an interior defining a rotor path, an inlet formed in the housing at a first position on said rotor path, an outlet formed in the housing at a second position on said rotor path spaced from said first position. A rotor is rotatable in the housing with a first surface that seals against the housing. A second surface is formed on said rotor circumferentially spaced from said first surface and forms a chamber that travels around said rotor path to convey fluid from the inlet to the outlet. A resilient seal formed with the housing is located on the rotor path to prevent fluid flow from said outlet to said inlet past the seal. A passage may be provided to supply fluid to an under surface of the seal at a pressure that acts to urge the seal against the rotor.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2010 Application Filing Year
- F04C Class
- 200 Applications Filed
- 144 Patents Issued To-Date
- 72 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 4 Citation Count
- F04C Class
- 21.24 % this patent is cited more than
- 10 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 3, 2027 |
