Brakes – Internal-resistance motion retarder – Having a thrust member with a variable volume chamber
Patent
1979-06-21
1981-07-28
Halvosa, George E. A.
Brakes
Internal-resistance motion retarder
Having a thrust member with a variable volume chamber
137529, 277216, 277236, F16F 934
Patent
active
042806011
ABSTRACT:
An improved piston compression valve mechanism for a double acting shock absorber which includes an upwardly facing annular valve seat on the piston. A washer member is fixed to the piston above the valve seat. The exterior periphery of the piston between the valve seat and washer includes six annularly spaced radially outwardly facing arcuate surfaces. Six coil springs are mounted with their upper ends engaging the washer member and their inner exterior peripheries adjacent the arcuate surfaces. A lower spring support including an outer cylindrical peripheral wall is disposed in surrounding relation to the outer exterior peripheries of the coil springs. An inwardly projecting flange and six radially inwardly projecting portions extend toward and adjacent to the arcuate surfaces which are in supported relation to the lower ends of the coil springs. An annular seal and carrier assembly is disposed below the spring support flange and is resiliently biased downwardly into engagement with the valve seat by the coil springs.
REFERENCES:
patent: 1474024 (1923-11-01), Cowles
patent: 1965294 (1934-07-01), Marshall
patent: 2497972 (1950-02-01), Beecher
patent: 2507267 (1950-05-01), Patriquin
patent: 2507268 (1950-05-01), Patriquin
patent: 3997037 (1976-12-01), Schupner
patent: 4109767 (1978-08-01), Nandyal et al.
Gabriel of Canada Limited
Halvosa George E. A.
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