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:
Nov. 09, 1999
Filed:
Oct. 29, 1997
Daniel J Gallagher, Tulsa, OK (US);
David H Lafevers, Gordonville, TX (US);
David D Breckenridge, Tulsa, OK (US);
The Nordam Group, Inc., Tulsa, OK (US);
Abstract
A system for reinforcing a sandwich panel, the panel having a first exterior skin, an intermediate skin and a second exterior skin, the skins being separated by first and second cores and having a hole bored therethrough of diameter A, the holes in the first and second exterior skins being enlarged to a diameter B, the system including a first tubular sleeve that is insertable into the hole in the first exterior skin and being of a length substantially equal to the spacing between the first exterior skin and the intermediate skin, a second tubular sleeve that is insertable into the hole in the second exterior skin and being a length substantially equal to the spacing between the second exterior skin and the intermediate skin, the first and second sleeves each having a diameter greater than A and slightly less than B, a bolt insertable through the tubular sleeves, the bolt having a head that contacts the exterior surface of the first exterior skin, first and second flare washers positioned on the bolt, one engaging the first tubular sleeve and the other engaging the second tubular sleeve and a nut threadably receivable on the bolt adaptable to contact the exterior surface of the second exterior skin.