Motion transmission limiting apparatus

Measuring and testing – Vibration – Vibrator

Patent

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Details

73665, 181121, B06B 110

Patent

active

044467427

ABSTRACT:
A seismic testing apparatus is provided in which linear motion or excitation of a horizontally disposed table is achieved simultaneously along three mutually orthogonal axes by means of independently operable hydraulic-actuator assemblies. Rotational or torsional motion of the table about the linear excitation axes is resisted by separate, mechanical rotation-inhibiting means each consisting of a torsionally rigid structure disposed parallel to the table and perpendicularly to their respective associated axes of excitation. The torsionally rigid structures are each connected to the table at two spaced-apart points, with all four points of connection lying in the same plane.

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patent: 4011749 (1977-03-01), Cappel
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patent: 4265123 (1981-05-01), Cappel

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