Rotary expansible chamber devices – With mechanical sealing – Axially movable end wall or end wall portion
Reexamination Certificate
2011-06-07
2011-06-07
Trieu, Theresa (Department: 3748)
Rotary expansible chamber devices
With mechanical sealing
Axially movable end wall or end wall portion
C418S026000, C418S182000, C418S259000
Reexamination Certificate
active
07955063
ABSTRACT:
A vane pump comprising a case, a rotor disposed in the case, the rotor having a bore, a plurality of vanes radially moveable with respect to the rotor extend from the rotor, a drive shaft engaged with the bore, a second shaft fixedly connected to the case and extending from the case to slidingly engage the bore, a land extending from each end of the rotor, each land cooperating with the case to seal a fluid flow, and each land further axially controlling a rotor position within the case by a sliding engagement, and the drive shaft retainable in a predetermined position with respect to the case.
REFERENCES:
patent: 2635551 (1953-04-01), De Lancey
patent: 4342545 (1982-08-01), Schuster
patent: 4361419 (1982-11-01), Vohringer
patent: 4558998 (1985-12-01), Kiyoshige et al.
patent: 4958992 (1990-09-01), Winiger
patent: 5399075 (1995-03-01), Frank et al.
patent: 5807090 (1998-09-01), Agner
patent: 5964584 (1999-10-01), Lorentz
patent: 5980225 (1999-11-01), Sommer
patent: 6033190 (2000-03-01), Merz
patent: 6422845 (2002-07-01), Wong et al.
patent: 6481990 (2002-11-01), Wong et al.
patent: 6558132 (2003-05-01), Hanggi
patent: 2006/0222512 (2006-10-01), Hansen
Mooy Robert H.
Morton Paul M.
Dougherty, Esq. P.N.
Dougherty, Esq. T.A.
Stackpole Limited
Thurnau, Esq. J.A.
Trieu Theresa
LandOfFree
Vane pump does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Vane pump, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vane pump will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2712849