F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
138/96
F16L 55/02 (2006.01) F15B 1/24 (2006.01)
Patent
CA 1270423
PRESSURE-BALANCED SEALS FOR VENTED ACCUMULATORS ABSTRACT OF THE DISCLOSURE The pressure accumulator (10) comprises a cylin- drical 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 res- pective 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). Alterna- tively, 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 pres- sure 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).
531124
Alliedsignal Inc.
Macrae & Co.
LandOfFree
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