Barbed shank fastener
Patent 5290131 Issued on March 1, 1994. Estimated Expiration Date: 
December 7, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 7, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorApplicationNo. 989996 filed on 12/07/1992US Classes:411/180, Nut deforms wall of preformed opening in substructure during assembly411/338, Lap bolt or fastener411/377, Moldable411/424Shank structureExaminersPrimary: Lindsey, Rodney M.Attorney, Agent or FirmForeign Patent References
International ClassesF16B 037/04339 168 AbstractA fastener assembly to be used in the construction of semi-trailers consisting of a first fastener having a head and a shank, a mating second fastener, and a plurality of radially spaced projecting barbs formed on the shank. The barbs, which may also be spaced axially on the shank, engage in a hole for receiving the first fastener to prevent rotation and removal of the first fastener. The first fastener may also be provided with an encapsulating cover with two sealing points on its underside to seal the fastener to a surface through which the fastener is inserted.Field of SearchNut deforms wall of preformed opening in substructure during assemblyMoldable Including movable threaded segments Interrupted EXTERNALLY THREADED FASTENER ELEMENT, E.G., BOLT, SCREW, ETC. HEADED FASTENER ELEMENT WITH NUT, WASHER, SECURING MEANS OR CAP Lap bolt or fastener Including sealing means Attachable cap structure Barb or spur-type projection Shank structure Having cap Resiliently retained Nut penetrates substructure and anchors itself thereto (e.g., pierce nut) Nut assembled to substructure utilizing cooperating regions on both Fastener having a deformable portion or deforms substructure (e.g., prong) Means to engage extends through aperture | |
