Expansible chamber devices – Relatively movable working members
Patent
1984-02-01
1986-07-29
Hershkovitz, Abraham
Expansible chamber devices
Relatively movable working members
92134, 92146, 92166, 92DIG1, 108 20, F01B 102
Patent
active
046025553
ABSTRACT:
Table couplings for coupling hydraulic actuators to large shaking tables, such as earthquake simulator tables are preloaded under gaseous pressure to permit the couplings to be nontension carrying couplings, which in turn permits use of hydrostatic slip bearings between the side surfaces and the bottom surface of the table and the actuators. The hydrostatic bearings in turn reduce the need for swivels, links and yokes that carry both tension and compression. The use of compression only loading such as that permitted with the present device, also reduces the problem of making a satisfactory table foundation, because only compression loads are carried to the foundation rather than alternating tension-compression loads.
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Hershkovitz Abraham
MTS Systems Corporation
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