Brakes – Internal-resistance motion retarder – Having a thrust member with a variable volume chamber
Patent
1981-12-28
1984-04-03
Butler, Douglas C.
Brakes
Internal-resistance motion retarder
Having a thrust member with a variable volume chamber
188318, 267 6423, 1375137, 1375395, F16F 934
Patent
active
044402732
ABSTRACT:
A shock absorber comprising a cylinder, cylinder head having a relief check valve therein including an annular valve spool, relief valve ball, spring support, valve spring and valve cap, piston, piston head, outer case, foot valve body, dust cover, piston bellows and pivot bushing assemblies.
REFERENCES:
patent: 2470372 (1949-05-01), Roth
patent: 3556264 (1971-01-01), De Konig et al.
patent: 3682103 (1972-08-01), Schwam
patent: 4106412 (1978-08-01), Farris et al.
patent: 4240531 (1980-12-01), Postema
Butler Douglas C.
Diefendorf R. R.
Duzan James R.
Halliburton Company
Weaver Thomas R.
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