The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 29, 1995
Filed:
Oct. 06, 1993
Terry L Hagen, Corona, CA (US);
Wyle Laboratories, El Segundo, CA (US);
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.