Sheet metal nail and method for producing same
Patent 4167885 Issued on September 18, 1979. Estimated Expiration Date: 
August 17, 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.
August 17, 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 References 1604437 2404245 2620705 2745308 2751052 Nail Steel wall stud and the wall frame employing the same Patent #: 4001993 InventorsApplicationNo. 05/825330 filed on 08/17/1977US Classes:411/478, Folded or twisted411/923NAIL, SPIKE OR TACK HAVING SPECIFIC HEAD STRUCTUREExaminersPrimary: Mitchell, James C.Attorney, Agent or FirmInternational ClassesF16B 15/00 (20060101)F16B 15/06 (20060101) AbstractAn improved, one-piece, sheet metal nail having a generally cross-sectionally V-shaped shank portion and a head portion comprising extensions of the two legs defining the generally V-shaped shank portion which are folded inwardly at substantially right angles thereto is provided. One of said shank portion extensions will overlap the other of said shank portion extensions to provide a relatively easily produced head portion having improved strength characteristics. The extensions of the shank portion legs are of sufficient length to provide a head portion of sufficiently large area for driving of the nail and/or for providing a sufficiently large bearing surface to retain the member through which the nail is driven to the member into which the nail is driven. | |
