Spring devices – Bendable along flat surface – Ring or annular spider
Reexamination Certificate
2007-02-27
2007-02-27
Dinh, Tien (Department: 3644)
Spring devices
Bendable along flat surface
Ring or annular spider
C244S017110
Reexamination Certificate
active
10761422
ABSTRACT:
A compliant spacer which, in use, is located between planar surfaces of two machine elements which are, in use, clamped together in an assembly, the spacer having a first generally planar face and a second oppositely facing generally planar face which is generally parallel to the first generally planar face, each of the first and second generally planar faces having a plurality of raised regions, the raised regions of the first face being offset with respect to the raised regions of the second face, so that as the two machine elements are clamped together with the spacer therebetween, the spacer deforms out of plane to maintain the clamping load in use, and each raised region including a bearing surface and edge regions where the raised region joins the respective planar face of the spacer, the bearing surface being generally planar and parallel to the first and second planar faces, and the edge regions of the raised regions melding smoothly into the respective planar face of the spacer without any sharp discontinuity.
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Patent Abstracts of Japan, vol. 018, No. 254 (M-1605), May 16, 1994—& JP 06 033963 A (Ishikawajima Harima Heavy Ind Co Ltd), Feb. 8, 1994 * abstract; Figures 1-6 *.
Cave Andrew Martin
Fitzsimons Keith Bryden
Locke Michael John
Painter David Edward
Dinh Tien
Petry Marvin
Stites & Harbison PLLC
Westland Helicopters Limited
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