Rotary expansible chamber devices – With mechanical sealing – Axially movable end wall or end wall portion
Reexamination Certificate
2005-12-19
2008-10-21
Denion, Thomas (Department: 3748)
Rotary expansible chamber devices
With mechanical sealing
Axially movable end wall or end wall portion
C418S171000, C418S196000, C417S283000, C417S310000
Reexamination Certificate
active
07438542
ABSTRACT:
A fluid pump assembly comprises a pump housing and a fluid pump disposed within the pump housing. The fluid pump has axially opposite first and second side faces and includes cooperating impeller and rotor members. The fluid pump assembly further comprises inlet and outlet ports disposed adjacent to the first side face, a pressure chamber formed within the pump housing adjacent to the second side face, and an end plate disposed within the pressure chamber and movable relative to the pump between a first position and a second position. The end plate has axially opposite inner and outer end surfaces oriented so that the inner end surface faces the fluid pump, while the outer end surface faces away from the pump. An area of the outer end surface of the end plate is greater than the area of the inner end surface thereof.
REFERENCES:
patent: 1486836 (1924-03-01), Hill
patent: 2380783 (1945-07-01), Painter
patent: 2405061 (1946-07-01), Shaw
patent: 3034446 (1962-05-01), Brundage
patent: 4014630 (1977-03-01), Drutchas
patent: RE29456 (1977-10-01), Drutchas et al.
patent: 4253803 (1981-03-01), Wormmeester et al.
patent: 4398871 (1983-08-01), Grabb
patent: 4408963 (1983-10-01), Drutchas
patent: 4422834 (1983-12-01), Drutchas et al.
patent: 4457677 (1984-07-01), Todd
patent: 4540347 (1985-09-01), Child
patent: 4596519 (1986-06-01), Tuckey
patent: 5017101 (1991-05-01), White
patent: 5085187 (1992-02-01), Black
patent: 6676394 (2004-01-01), Bodzak
patent: 6688851 (2004-02-01), Phelan et al.
patent: 6688866 (2004-02-01), Lambert et al.
Baxter, Jr. Ralph W.
Garlick Stephen
Sommer Randy
Berenato White & Stavish
Dana Automotive Systems Group, LLC.
Davis Mary A
Denion Thomas
LandOfFree
Fluid pump assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fluid pump assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fluid pump assembly will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4010848