Vehicle fenders – Buffer or bumper type – Shiftable between operative and inoperative positions other...
Reexamination Certificate
2005-08-16
2005-08-16
Coletta, Lori L. (Department: 3612)
Vehicle fenders
Buffer or bumper type
Shiftable between operative and inoperative positions other...
C293S005000
Reexamination Certificate
active
06929296
ABSTRACT:
A motor vehicle bumper system includes a bumper unit having pairs of hydraulic cylinders controlled to move a bumper between an extended position and a retracted position, a pump controlled to pump the oil from an oil tank to the hydraulic cylinders to move the bumper between the extended position and the retracted position, a pressure-setup pipe unit connected between the hydraulic cylinders, the pump and the oil tank and equipped with a decompression valve and controlled by a direction control valve to let the oil be alternatively pumped to the upper oil chambers and lower oil chambers of the hydraulic cylinders to retract or extend out the bumper, and a pressure-relief pipe unit using a relief valve and an accumulator to release pressure from the hydraulic cylinders and a hydraulic oil pressure sensor to control the explosion time of the air bag of the motor vehicle.
REFERENCES:
patent: 3346292 (1967-10-01), Ervin
patent: 3355208 (1967-11-01), Brock
patent: 3677595 (1972-07-01), Hamilton
patent: 3834483 (1974-09-01), Palmer
patent: 3947061 (1976-03-01), Ellis
patent: 5951073 (1999-09-01), Hall
patent: 5967573 (1999-10-01), Wang
patent: 6193460 (2001-02-01), Damico
patent: 6227583 (2001-05-01), Eipper et al.
patent: 6264258 (2001-07-01), Li et al.
patent: 6435578 (2002-08-01), Li
Coletta Lori L.
Pro-Techtor Inter-national Services
LandOfFree
Motor vehicle bumper system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Motor vehicle bumper system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Motor vehicle bumper system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3476072