Land vehicles – Wheeled – Occupant propelled type
Patent
1998-02-04
2000-08-22
Johnson, Brian L.
Land vehicles
Wheeled
Occupant propelled type
267 6425, 267 6426, 18832215, 1883191, B62K 2508
Patent
active
061059889
ABSTRACT:
A suspension system having first and second elements telescopingly engaged and being biased apart by a positive spring, such biasing being counteracted by a negative spring. In one embodiment, the positive spring and negative spring are disposed in the first element, which is in the form of a tube, and separated by a damping system, and a damping piston is fixed with respect to the first element. In another embodiment in which the suspension system comprises two legs of a bicycle suspension fork, a positive spring is disposed in both legs, and a negative spring and damping system are disposed in separate legs. In another embodiment in which the suspension system comprises a rear shock absorber for a bicycle, the negative and positive springs are disposed in a first tubular element, and a damping system is disposed in a second tubular element. The positive and negative springs preferably comprise air or other gas springs, and the negative spring preferably performs the additional function of resisting top-out impacts.
REFERENCES:
patent: 2934332 (1960-04-01), Mercier
patent: 3687438 (1972-08-01), Rickard
patent: 4795009 (1989-01-01), Tanahashi et al.
patent: 5000470 (1991-03-01), Kamler et al.
patent: 5088705 (1992-02-01), Tsai
patent: 5284352 (1994-02-01), Chen
patent: 5509674 (1996-04-01), Browning
patent: 5509675 (1996-04-01), Barnett
patent: 5538276 (1996-07-01), Tullis
patent: 5580075 (1996-12-01), Turner et al.
patent: 5634653 (1997-06-01), Browning
patent: 5711514 (1998-01-01), Lu
patent: 5725226 (1998-03-01), Cabrerizo-Pariente
patent: 5775677 (1998-07-01), Englund
patent: 5862895 (1999-01-01), Ricard
Chu Kevan L.
Cobene, II Robert L.
Turner Paul H.
Hansen David W.
Johnson Brian L.
Lerner Avraham H.
Rockshox, Inc.
LandOfFree
Adjustable suspension system having positive and negative spring does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Adjustable suspension system having positive and negative spring, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adjustable suspension system having positive and negative spring will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-571906