Insulated fastener

Details Insulated fastener Insulated fastener

2007-02-13

2010-06-29

Saether, Flemming (Department: 3677)

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

Headed fastener element with nut, washer, securing means or cap

Cap over the head

C411S410000, C411S903000

Reexamination Certificate

active

07744321

ABSTRACT:
A metallic head of a fastener includes merlon portions between crenel portions. The crenel portions form a slot which may be used to tighten or loosen the fastener. An insulating material covers portions of the metallic head to prevent human contact with the metallic head and terminal lugs secured thereby. The metallic head defines a counter bore portion. Inner walls of the counter bore portion may be formed into a hexagon. The insulating material may extend into the counter bore portion covering the inner walls, as well as the surfaces of the crenel portions. The bottom of the counter bore may remain uncovered to facilitate signal testing with a test probe.

REFERENCES:
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patent: 4948318 (1990-08-01), Nottelmann et al.
patent: 5122021 (1992-06-01), Medal
patent: 5358368 (1994-10-01), Conlan et al.
patent: 5906463 (1999-05-01), Damm et al.
patent: 6302630 (2001-10-01), Grant

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