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:
Jun. 18, 1985
Filed:
Sep. 30, 1982
Conrad M Fritz, Altadena, CA (US);
Keystone Engineering Company, Los Angeles, CA (US);
Abstract
A high-performance low-torque anti-friction bearing assembly having numerous applications including dynamic support of a stabilized platform under severe operating conditions. The assembly consists of two rings provided with two pairs of raceways having respective rows of balls therebetween preferably under static preload. The balls and their raceways have a conformity factor of approximately 0.56 to 0.60 and the two rows of balls are in contact with a respective pair of raceways at converging similar contact angles of about 35 degrees. The ratio of the ball path diameter and the square root of the cross-sectional area of the bearing is at least 15. A bearing incorporating these features performs at high efficiency with minimal torque losses under both simultaneous and non-simultaneous axial, radial and moment load conditions and associated distortions.