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:
Mar. 14, 2000
Filed:
Jul. 20, 1998
Robert W Postma, Los Angeles, CA (US);
Robert B Pan, Torrance, CA (US);
Brian T Hamada, Torrance, CA (US);
Louis K Herman, Rancho Palos Verdes, CA (US);
The Aerospace Corporation, El Segundo, CA (US);
Abstract
A linear roller washer bearing in a bolt interface assembly allows relative differential thermal expansion and contraction motion between a component plate and a base plate fastened together by a bolt without inducing large strains and stresses upon the bolt. The roller washer bearing functions as a thin spacer between the component and base plates enabling high preload tightening of the bolted assembly while enabling relative bidirectional motion of the plates. The roller washer bearing is a multiple roller assembly with thin rollers arranged unidirectionally and horizontally in parallel between the top and bottom washer plates. The rollers roll back and forth to enable relative back and forth alternating unidirectional motion of the component and base plates while the full strength of the bolt remains available to the support the component plate without creating high friction shear forces.