Fastener

Details Fastener Fastener

2006-10-10

2006-10-10

Mah, Chuck Y. (Department: 3677)

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

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

Head driving structure

C411S399000, C411S380000, C411S432000

Reexamination Certificate

active

07118317

ABSTRACT:
The present invention concerns a fastener arrangement made of a component and a screw element with an area for the application of force for a turning tool, where the component and the screw element, when fastened to each other, are in contact with each other by way of contact surfaces, and where the contact surface of the screw element on the side facing the component, has a convexly curved outer surface, and where the contact surface of the component has a concavely curved inner surface, while the outer surface and the inner surface are positioned coaxially with respect to a common longitudinal axis, which runs through the component and the screw element.

REFERENCES:
patent: 1264569 (1918-04-01), Stafford
patent: 1354610 (1920-10-01), Flannery et al.
patent: 1447068 (1923-02-01), Flannery
patent: 1507841 (1924-09-01), Landgraf
patent: 3135154 (1964-06-01), Zenzic
patent: 3313197 (1967-04-01), Knohl
patent: 3429581 (1969-02-01), Franz
patent: 4127037 (1978-11-01), Weaver
patent: 4717299 (1988-01-01), Underwood
patent: 5143410 (1992-09-01), Takikawa
patent: 5405227 (1995-04-01), His et al.
patent: 5534032 (1996-07-01), Hodorek
patent: 3027191 (1982-02-01), None

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