Threaded – headed fastener – or washer making: process and apparat – Process – Making internally threaded fastener – e.g. – nut
Patent
1998-03-05
1999-11-30
Larson, Lowell A.
Threaded, headed fastener, or washer making: process and apparat
Process
Making internally threaded fastener, e.g., nut
470 18, 470 25, 723556, B21D 5324
Patent
active
059933208
ABSTRACT:
A Tee nut and method of manufacture is provided which Tee nut includes a flange and a hollow barrel extending from the flange. The flange is general circular and has a pair of pawls extending upwardly therefrom, each of which terminates in teeth for engaging a base member. The barrel has an end portion proximal to the flange and a distal end portion. The proximal end portion has internal female threads and the distal end portion has a smooth unthreaded inner surface. The wall thickness of the distal end portion is thinner than the wall thickness of the proximal end portion, and the outer wall diameter is essentially constant for the length of the barrel. The barrel is formed first as an elongate member extending from a strip of material initially having a constant inner diameter and an outer diameter of the proximal portion greater than the outer diameter of the distal portion, with the distal portion having a wall thickness thinner than the wall thickness of the proximal portion. The outer diameter of the distal portion is increased to the same diameter as the outer diameter of the proximal portion while maintaining the same wall thicknesses of both the distal and proximal portions. The internal surface of the proximal portion is threaded with threads terminating at the distal portion and having a lead angle of at least about 80.degree.. The terminal end surface of the distal portion is essentially planar and parallel to a flange.
REFERENCES:
patent: 423666 (1890-03-01), Bryant
patent: 815055 (1906-03-01), Weiss
patent: 945737 (1910-01-01), Anderson
patent: 1112525 (1914-10-01), Darling
patent: 1829657 (1931-10-01), Jones
patent: 1850713 (1932-03-01), Fox
patent: 1873894 (1932-08-01), Kimbell
patent: 2001144 (1935-05-01), Krnansky
patent: 2102558 (1937-12-01), Johnson
patent: 2286982 (1942-06-01), Todd
patent: 2292239 (1942-08-01), Pierce et al.
patent: 2583270 (1952-01-01), Lynall
patent: 2743518 (1956-05-01), Zahodiakin
patent: 3021537 (1962-02-01), Hughes
patent: 3079830 (1963-03-01), Faroni et al.
patent: 3125146 (1964-03-01), Rosan
patent: 3208135 (1965-09-01), Newbold et al.
patent: 3281171 (1966-10-01), Hughes
patent: 3314699 (1967-04-01), Taylor
patent: 3358727 (1967-12-01), Hughes
patent: 3432978 (1969-03-01), Erickson
patent: 3480061 (1969-11-01), Leistner
patent: 3826206 (1974-07-01), Ruggles
patent: 3910331 (1975-10-01), Randall
patent: 4911592 (1990-03-01), Muller
patent: 5238344 (1993-08-01), Nagayama
patent: 5348432 (1994-09-01), Nagayama
patent: 5429466 (1995-07-01), Nagayama
patent: 5501558 (1996-03-01), Figge et al.
patent: 5503596 (1996-04-01), Nagayama
patent: 5618144 (1997-04-01), Leistner
Patent Specification 1,427,010. Specification published on Mar. 3, 1976. Inventor: Mel Bunker.
Patent Specification 1,025,455. Specification published on Apr. 6, 1966.
Patent Specification 191,416. Specification published on Jan. 15, 1923.
Declaration of Inventor with attached Exhibit A. (2 pages).
Larson Lowell A.
Stafast Products Inc.
Tolan Ed
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