Hydraulic shock absorber

Spring devices – Vehicle – Mechanical spring and nonresilient retarder

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C267S034000

Reexamination Certificate

active

07540480

ABSTRACT:
A shock absorber includes a cylinder tube connected to one portion of a shock absorbing body, a main piston rod extending from a piston with its extension end being connected to another portion of the shock absorbing body, a sub piston rod extending from the piston, an oil chamber pressurizing device arranged to pressurize a hydraulic oil, and damping force generators arranged to generate a damping force by allowing the hydraulic oil to flow between first and second oil chambers. A sealed space for containing an extension end of the sub piston rod is provided. Gas having a pressure larger than atmospheric pressure and smaller than a pressure applied on the hydraulic oil by the oil chamber pressurizing device is filled in the sealed space.

REFERENCES:
patent: 3762514 (1973-10-01), Freitag
patent: 4099602 (1978-07-01), Kourbetsos
patent: 4318536 (1982-03-01), Bauer
patent: 4993552 (1991-02-01), Bugbey et al.
patent: 5097928 (1992-03-01), Enders et al.
patent: 5560456 (1996-10-01), Koch et al.
patent: 0 381 188 (1990-08-01), None
patent: 1 054 185 (2000-11-01), None
patent: 11-165521 (1999-06-01), None
patent: 2004-232845 (2004-08-01), None
patent: 2007/052581 (2007-05-01), None
Satou et al.: “Damper,” U.S. Appl. No. 12/091,958, filed Apr. 29, 2008.
Official communication issued in counterpart European Application No. 08004623.8, mailed on Jul. 10, 2008.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Hydraulic shock absorber does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydraulic shock absorber, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic shock absorber will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4090928

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.