Metal deforming – Process – With attenuation – thickening – elongating or shortening of...
Patent
1988-05-04
1989-05-09
Combs, E. Michael
Metal deforming
Process
With attenuation, thickening, elongating or shortening of...
10 10R, 10 27R, B21K 144
Patent
active
048277568
ABSTRACT:
An improved fastener provides axially extending teeth on a narrow shoulder adjacent the fastener head. The teeth bite into sheet material, and are particularly useful in biting into the surface of a thin sheet which is fastened to a thicker sheet material. The teeth extend from a shoulder formed on a medial collar between the head and a threaded shank. The narrow shoulder has a larger diameter than the end of the threaded shank to which the shoulder is joined. The teeth can be formed by cold-flow of the material of the shoulder so that the teeth axially extend from the outer peripheral edge of the shoulder in order to bite into the thin sheet metal proximate the annular periphery of the aperture in which the threaded shank is engaged. Preferably, the teeth axially overlap the threading of the shank which extends entirely to its junction with the shoulder, and the teeth are fabricated after the shank thread in order to enable such overlap by the teeth.
REFERENCES:
patent: 1968516 (1934-07-01), Dieter
patent: 2056688 (1936-10-01), Peterka et al.
patent: 2136523 (1938-11-01), Rosenberg
patent: 2136524 (1938-11-01), Rosenberg
patent: 2147209 (1939-02-01), Olson
patent: 2833326 (1958-05-01), Knohl
patent: 2871752 (1959-02-01), Stern
patent: 3118718 (1964-01-01), Babey
patent: 3120254 (1964-02-01), Waltermire et al.
patent: 3377039 (1968-04-01), Hayes
patent: 3389734 (1968-06-01), Gutshall
patent: 3399705 (1968-09-01), Breed et al.
patent: 3418869 (1968-12-01), Herpich
patent: 3456972 (1969-07-01), Drotar
patent: 3967669 (1976-07-01), Egner
patent: 4097168 (1978-06-01), Pagel
patent: 4220188 (1980-09-01), McMurray
patent: 4516893 (1985-05-01), Barth
Combs E. Michael
Giangiorgi R. A.
Textron Inc.
LandOfFree
Fastener fabrication method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fastener fabrication method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fastener fabrication method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-80962