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. 20, 2000
Filed:
Feb. 27, 1998
Keith T Honda, Ellington, CT (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
A bellcrank mechanism (52) for applications in which unequal transverse forces (F.sub.i, F.sub.o) act on the two legs of a bellcrank support clevis includes a bellcrank bracket (64), a bellcrank (54) having a support clevis (56), and a set of bearings (84a, 84b) having unequal load bearing areas (99a, 99b). The bearings are installed in apertures (80) in the support clevis and are axially clamped to the support bracket to pivotably and transversely support the bellcrank so that relative pivotal motion occurs at the interface (102a, 102b) between the exterior surface (99a, 99b) of each bearing and the perimeter surface (100a, 100b) of the corresponding clevis aperture (80). The bearing having the larger load bearing area is aligned with the larger transverse force and the bearing with the smaller load bearing area is aligned with the smaller transverse force to improve the durability and reliability of the bellcrank mechanism. In one variant, each bearing is circumscribed by a similarly sized wear sleeve (82a, 82b) so that relative motion occurs at the interface (96a, 96b) between the interior surface (97a, 97b) of each wear sleeve and the exterior surface 99a, 99b of the corresponding bearing 84a, 84b. In another embodiment, each bearing includes a flange (85) that seats against the bellcrank (54) to guard against dirt contamination of the relative motion interfaces.