Shock absorber with improved dynamic sealing

Details Shock absorber with improved dynamic sealing Shock absorber with improved dynamic sealing

1989-02-13

1990-05-15

Reger, Duane A.

Brakes

Internal-resistance motion retarder

Including seal or guide

267 6413, 272 72, F16F 936

Patent

active

049249754

ABSTRACT:
The shock absorber of the invention comprises a struct (1) in which a sliding rod (4) is mounted, with an annular chamber (17) being defined between the strut and the sliding rod. According to the invention, the shock absorber includes at least one support bearing (10) between the strut and the sliding rod in the vicinity of the opening (3) in the strut, and a sealing bearing (12) at a distance from the support bearing (10) and disposed at a level which corresponds to the top portion of the sliding rod when the shock absorber is in its extended position, with the sealing bearing (12) also having a side which is in contact with the annular chamber (17) and spporting at least two sealing rings (14) which are separted by a groove (13) which is connected to the annular chamber via a balance channel (16) capable of being closed by a cock (19).

REFERENCES:
patent: 1861755 (1932-06-01), Rasmussen
patent: 4136886 (1979-01-01), Sjoholm et al.
patent: 4662486 (1987-05-01), Stenberg

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