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:
Sep. 24, 1991
Filed:
Feb. 21, 1989
Robert E Anderson, Huntington Station, NY (US);
Grumman Aerospace Corporation, Bethpage, NY (US);
Abstract
The invention relates to an expansion fastener device that secures two interlocking members together. The device includes a parallelepiped receptacle having slits along opposite ends. The receptacle is inserted through the interlocking members and triple wedges are driven into the receptacle. The triple wedges includes a first wedge having tapers in the vertical direction and its insertion into receptacle causes only vertical expansion of the receptacle. A pair of horizontally tapered wedges are inserted into the receptacle alongside the first wedge and they cause only horizontal expansion of the receptacle. Utilization of the invention reduces stress points as created by conventional rivets.