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. 02, 1992
Filed:
Apr. 29, 1991
John A Violette, Granby, CT (US);
Peter D Ventura, Enfield, CT (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
Preloading and retention of a variable-pitch, light-weight propeller blade (10) are achieved through a retention assembly wherein the blade shank (20) is retained within a hub arm (24) with an inboard angular contact pitch change bearing (30) and an outboard angular contact anti-rocking bearing (50) which is elastomerically preloaded. The outboard bearing (50) is disposed intermediate a bearing race (34) on the shank (20) and an annular frusto-conical rigid support member (62) which is biased outboardly against the anti-rocking bearing (50) by an annular frusto-conical body (72) of elastomeric material selected to impart a desired stiffness and/or damping effect to the retention assembly.