Pipes and tubular conduits – With pressure compensators – Variable capacity chambers
Patent
1986-04-29
1987-03-24
Marcus, Stephen
Pipes and tubular conduits
With pressure compensators
Variable capacity chambers
92174, 92182, 92247, 267 6411, F16L 5502
Patent
active
046517820
ABSTRACT:
The pressure accumulator (10) comprises a cylindrical housing (12) having a bore (14) with a piston received slidably therein. The piston (30) has an H-shaped cross section and includes a reduced diameter portion (34) extending longitudinally along the piston (30), and a sealing device (36, 38) disposed at each end of the reduced diameter portion (34). A cylindrical sleeve (44) is received in the reduced diameter portion (34) such that each end of the sleeve (44) abuts a respective sealing device (36, 38). The housing (12) has an exterior circumferential groove (20) with an O-ring (26) therein, and a radial opening (22) extending between the circumferential groove (20) and bore (14). Alternatively, the piston (30) may have a longitudinal opening (61) extending from one side of the piston to grooves (63, 64) at the other end (32), the grooves (63, 64) receiving a ring (72) which is subjected to fluid pressure transmitted through the longitudinal opening (61) and expanded radially outwardly against an angled portion (73) of a force-transmitting member (74) which moves longitudinally against seals (76, 77) disposed in one of the grooves (63, 64).
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patent: 2720220 (1955-10-01), Gratzmuller
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patent: 4073217 (1978-02-01), Colin
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Allied Corporation
Decker Ken C.
Marcus Stephen
Palguta Larry J.
Peters Leo J.
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