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:
Dec. 16, 1986
Filed:
Dec. 16, 1985
James Hunt, Renton, WA (US);
The Boeing Company, Seattle, WA (US);
Abstract
A fastener (36,58) attaches a composite material external skin (2) of an aircraft structure to another structure (4). Fastener (36,58) has a metallic head (44,62) and shaft (38,60) and a dielectric cap (50,70) covering a top portion of head (44,62). Head (44,62) and cap (50,70) are received into a countersink hole (6) in skin (2). Cap (50,70) is resilient and fills gap (16) between the top portion of head (44,62) and the inner sidewalls of hole (6). Cap (50,70) forms, with skin (2), an aerodynamic surface which is sufficiently continuous to receive and maintain a crack-free coat of paint having a uniform thickness. The top (52) of cap (50) of internally wrenching fastener (36) is an integral layer of uniform thickness. The top (72) of cap (70) of fastener (58) includes a uniform layer covering the head's top surface around a tool receiving recess (66) and a body of material (74) filling recess (66) and positioned therein after structures (2,4) are attached.