Fastener
Patent 4138921 Issued on February 13, 1979. Estimated Expiration Date: 
July 20, 1997. 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.
July 20, 1997. 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 ReferencesInventorsAssigneeApplicationNo. 05/817487 filed on 07/20/1977US Classes:411/510, Plural ridges or flanges411/476Having frangible portionExaminersPrimary: Holko, Thomas J.Attorney, Agent or FirmInternational ClassesF16B 19/10 (20060101)F16B 19/04 (20060101) F16B 5/06 (20060101) B62D 29/00 (20060101) B62D 29/04 (20060101) Foreign Application Priority Data1975-02-21 GBAbstractA two-part fastener intended for securing, e.g., a panel 41 to a frame member 42 comprises a tubular shell 11 and a pin 12. The shell bore contains a tubular insert or slug 14 of resilient nylon material. The exterior of the pin is formed with annular barbs 30. When the pin is inserted into the shell, the barbs 30 engage in the resilient slug 14 to secure the pin and shell together. The pin includes a removable pintail 33 which protrudes beyond the shell and assists in the pulling of the pin into the shell by means of a suitable pulling tool. | |
