Title:
LOW COST GEAR FUEL PUMP
Document Type and Number:
WIPO Patent Application WO2005079302
Kind Code:
A3
Abstract:
The present invention is directed to a gear pump having a housing (10') with an interior pumping chamber (200) and an inlet (40') to and outlet (42') from the chamber, the outlet being spaced from the inlet. A pair of rotating gears (330,332) is located in the chamber, the gears including teeth which mesh during gear rotation. The gears are preferably powder metal construction and fixedly secured on a shaft (230,232) having an axis of rotation. A pair of one-piece bearings (210,212) is located in the chamber and journal one of first and second end portions of each shaft (320). The one-piece bearings provide precise alignment of the first and second end portions of the shafts and maintain the shafts in parallel relation.
Inventors:
CHIU HING L (US)
Application Number:
PCT/US2005/004412
Publication Date:
June 08, 2006
Filing Date:
February 14, 2005
Export Citation:
Assignee:
ARGO TECH CORP (US)
CHIU HING L (US)
CHIU HING L (US)
International Classes:
F03C2/00; F04C2/08; F04C2/18; F04C15/00
Foreign References:
| US5403173A | 1995-04-04 | |||
| US5417556A | 1995-05-23 | |||
| US6390793B1 | 2002-05-21 | |||
| US3770332A | 1973-11-06 | |||
| US5538355A | 1996-07-23 | |||
| US3499390A | 1970-03-10 |
Other References:
See also references of EP 1718865A4
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