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:
Oct. 05, 1993
Filed:
May. 21, 1991
William J Mabe, Thornton, CO (US);
Sundstrand Corporation, Rockford, IL (US);
Abstract
A preloaded assembly (100) in accordance with the invention includes a stationary bushing (14) having an annulus (18); a shaft (12) having a first thermal coefficient of expansion with the shaft being mounted for rotation in the annulus of the stationary bushing; a first sleeve (102) which contacts the first shaft along a first portion (106) of an outside surface (104) of the shaft with the first sleeve having a second thermal coefficient of expansion; a second sleeve (108) having a third thermal coefficient of expansion, an outer surface (22) facing the annulus of the stationary bushing and an annulus with a first axial section (114) of the annulus of the second sleeve contacting a second portion (112) of the outside surface of the shaft adjacent the first portion and a second axial section (116) of the annulus of the second sleeve contacting an outside surface (118) of the first sleeve; and wherein the second coefficient of thermal expansion is greater than the third thermal coefficient of expansion and the shaft and sleeves rotate without slippage in unison in response to torque when an axial preload is applied to the shaft and sleeves within a predetermined range.