Thread forming joining elements

Details Thread forming joining elements Thread forming joining elements

1996-09-05

1998-10-27

Meyers, Steven N.

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Externally threaded fastener element, e.g., bolt, screw, etc.

Pilot end having means enhancing fastening or installation

411386, 411411, F16B 2500

Patent

active

058270302

ABSTRACT:
The present invention pertains to a thread-forming joining element, in particular, a screw, which comprises a single or multiple thread that extends over at least part of the screw shaft (1), a screw tip (3) and a screw head (2). The thread extends to the point of the screw tip (3), with at least one friction edge region (11) extending over at least part of the length of the screw tip (3) in the longitudinal direction of the screw, namely on the circumferential surface in the region of the screw head (3).

REFERENCES:
patent: 1088892 (1914-03-01), Foreman
patent: 2263137 (1941-11-01), Oestereicher
patent: 2278411 (1942-04-01), Braendel
patent: 3937119 (1976-02-01), Ernst
patent: 4655661 (1987-04-01), Brandt
patent: 4834602 (1989-05-01), Takasaki
patent: 4874278 (1989-10-01), Kawashita
patent: 5015134 (1991-05-01), Gotoh
patent: 5044853 (1991-09-01), Dicke
patent: 5273383 (1993-12-01), Hughes
patent: 5294227 (1994-03-01), Forster et al.
patent: 5374146 (1994-12-01), Allen

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