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:
Aug. 29, 1978
Filed:
May. 02, 1977
Basil C Stevenson, Corton Denham, Near Sherborne, GB;
Westland Aircraft Limited, Yeovil, GB;
Abstract
This invention concerns fibre reinforced plastics structures, and is particularly concerned with the attachment of such structures, for example, a helicopter rotor blade, to a supporting metal member by bolting through holes provided in the structure. Accordingly the invention teaches an arrangement in which the or each attachment hole is defined by at least two metal bushes secured in the structure with the outer ends of the outermost bushes flush with the surfaces of the structure and so that the bushes are spaced-apart axially within the structure. In a preferred embodiment, a resilient washer is located in the spacing between ends of adjacent bushes and in contact therewith.