Accumulator having fluid-lubricating seals

Details Accumulator having fluid-lubricating seals Accumulator having fluid-lubricating seals

1986-08-14

1987-08-11

Bryant, III, James E.

Pipes and tubular conduits

With pressure compensators

Variable capacity chambers

138 30, F16L 5504

Patent

active

046854916

ABSTRACT:
The accumulator comprises a housing (12, 212) having a bore (16, 216) extending longitudinally within the housing (12, 212), a piston (26, 226) disposed slidably within the bore (16, 216) and dividing the bore (16, 216) into first (18, 218) and second (20, 220) chambers. The piston (26, 226) has a bore (30, 230) with a bore opening (36, 236) at the first piston end (27, 227), the bore opening (36, 236) being enclosed by a sleeve member (70, 271). The sleeve member (70, 271) extends longitudinally away from the piston bore (30, 230) and into the first chamber (18, 218), the sleeve member (70, 271) having a sleeve opening (78, 273) permitting high pressure fluid contained within the first chamber (18, 218) to communicate freely with the piston bore (30, 230). A lubricating fluid (60, 260) is disposed about the first piston end (27, 227) and is prevented from entering into the piston bore (30, 230) by means of the sleeve member (70, 271). The sleeve member (271) may be biased away from the piston (226) by means of a spring (288) disposed within the piston bore (230).

REFERENCES:
patent: 3467140 (1969-09-01), Hanson

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