Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1981-02-20
1985-01-08
Crane, Daniel C.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
29446, 92 98R, 138 30, 403273, 403300, B23P 1500
Patent
active
044920130
ABSTRACT:
A hydraulic accumulator comprises two-halfs shells, the diaphragm therebetween defining two cavities. One cavity contains presssurized gas and the cavity receives hydraulic fluid under pressure. The two-half shells are held together by a mechanical element, such as a belt which has been previously prestressed to a tension selected according to the maximum pressure to which the accumulator will be subjected. The use of the prestressed mechanical element changes the dynamic stresses ordinarily found in a hydraulic accumulator to static stresses, thus minimizing the occurrence of creeks and failure of the device.
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Crane Daniel C.
Hydro Rene Leduc
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