Power plants – Pressure fluid source and motor – Having means controlling or attenuating shock vibration,...
Reexamination Certificate
2006-01-30
2009-08-18
Leslie, Michael (Department: 3745)
Power plants
Pressure fluid source and motor
Having means controlling or attenuating shock vibration,...
C091S447000, C137S493900
Reexamination Certificate
active
07574860
ABSTRACT:
A damper valve includes first and second chambers separated by a partition wall, hydraulic oil flowing from the first chamber to the second chamber via a supply path, and returning to the first chamber from the second chamber via a return path. A valve plate that is elastically deformable is urged toward a valve seat formed in the return path. The valve plate produces an elasticity restoring force so as to establish a balance between an urging force provided by an urging member and a reaction force provided by the valve plate, and is in line-contact with the valve seat when keeping the balance. The valve seat or the valve plate is formed into a conical tapered shape centered around the predetermined axis so that when the valve plate is abutted against the valve seat, an annular oil chamber is formed between the valve seat and the valve plate.
REFERENCES:
patent: 4034860 (1977-07-01), Leppich
patent: 6422126 (2002-07-01), Hamano et al.
patent: 7080659 (2006-07-01), Umetani
patent: 2004/0050426 (2004-03-01), Umetani
patent: 25 00 826 (1976-07-01), None
patent: 0 791 764 (1997-08-01), None
patent: 1 537 110 (1968-08-01), None
patent: 2001-158369 (2001-06-01), None
patent: 2004-106642 (2004-04-01), None
JTEKT Corporation
Leslie Michael
Rabin & Berdo PC
LandOfFree
Damper valve and hydraulic power steering apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Damper valve and hydraulic power steering apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Damper valve and hydraulic power steering apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4122146