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. 19, 1996
Filed:
Oct. 18, 1994
David N Schmaling, Oxford, CT (US);
Frederick J Miner, Torrington, CT (US);
Francis E Byrnes, White Plains, NY (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
A mounting assembly (100) is provided for securing a helicopter snubber bearing (70) to a bearingless rotor assembly (10) which includes a flexbeam connector (22) mounted to a torque drive hub member (18). The mounting assembly (100) includes a retainer fixture (102) for mounting a retainer (104) which engages an inner bearing race portion (88) of the snubber bearing (70). The retainer fixture (102) is mounted to the flexbeam connector (22) and includes an inboard end portion (112), a restraint portion (114) extending radially outboard thereof, and a seat portion (116) disposed therebetween. The retainer (104) is disposed in register with, and is compliantly bonded to, the seat portion (116) of the retainer fixture (102), and furthermore abuts the restraint portion (114) which provides redundant retention therefor. To reduce bondline stresses, the retainer (104) includes at least one stress relieving lateral slot (132) and at least one stress relieving forward slot (134), which cooperates with a radial slot (156) formed in the retainer fixture (102), to reduce shear and tensile stresses in the compliant adhesive (130). Furthermore, the seat portion (116) of the retainer fixture (102) is reduced in width dimension to reduce flap and pitch induced shear stresses. The mounting assembly (100) provides redundant load paths for transferring centrifugal loads acting on the snubber bearing (70) to the flexbeam connector (22) or, alternatively, to the central torque drive hub member (18).