Measuring and testing – Vibration – Vibrator
Patent
1993-10-06
1995-08-29
Chilcot, Jr., Richard E.
Measuring and testing
Vibration
Vibrator
73662, B04B 300
Patent
active
054450306
ABSTRACT:
A bearing assembly (22, FIG. 4 ) is provided for connecting an actuator (14A) to a shake table (12) on which a test object is mounted, which minimizes the mass to be moved by the actuator. The bearing assembly is of the type that includes upper and lower spherical bearings (30, 32) that each has inner and outer spherical members (36, 38 and 40, 42), an outside transmit member (54) which couples the outer members, and a shaft (70) which couples the inner members. The inner members are formed of a more rigid material such as steel, than the outer members which are formed of aluminum, for more closely equalized deflection of the engaged members at high loads. The shaft has an upper end (72) which is fastened to and projects above the inner member of the upper spherical bearing, and that lies in a recess (90) formed in the underside of the shake table. The outer member of the lower spherical bearing has a radially outer flange (122) which is divided into fingers, with the space between fingers being greater than the space occupied by the fingers.
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patent: 5099750 (1992-03-01), Rebel
Chilcot Jr. Richard E.
Noori Max H.
Wyle Laboratories
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