Pipes and tubular conduits – With pressure compensators – Variable capacity chambers
An open-ended accumulator is provided which may be constructed to be of a relatively large size, for example, in the 15-25 gallon range, and to be of relatively high pressure of the order, for example, of 5,000 psi. The accumulator is constructed so that its internal bladder can be replaced from one end of the shell without the need to remove the accumulator from the equipment in which it is installed. The accumulator includes a forged cap which is contoured to accept the rim of a thimble-shaped bladder within the shell, the cap being fitted within the open end of the shell. A segmented wedge-shaped tapered ring retains the cap in the shell. As outer plate may also be provided to permit the accumulator to be mounted under water without the water pressure tending to force the cap into the interior of the shell. The accumulator also includes a unique plug and poppet assembly in the liquid port at the opposite end of the shell which is constructed so that no part thereof can be dismantled so long as the accumulator contains a precharge.
patent: 3439712 (1969-04-01), Mercier
patent: 3486530 (1969-12-01), Mercier
patent: 3830259 (1974-08-01), Mercier
patent: 3907000 (1975-09-01), Carr
patent: 3941032 (1976-03-01), Clerk
Aegerter Richard E.
Beecher Keith D.
EMG Hydraulics, Inc.
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