Fastening device with security feature

Details Fastening device with security feature Fastening device with security feature

1997-08-29

1999-06-22

Wilson, Neill

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

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

Head driving structure

411403, 411910, 411919, 220327, F16B 2300, F16B 3506, B65D 4500

Patent

active

059136502

ABSTRACT:
216-type screws and KS-type screws are two types of fastening devices typically used to restrict access to the chambers of building entrance protector (BEP) enclosures used in telecommunications applications. Access to such chambers is limited to those users who have special tools designed for one or the other type of screw. The present invention is a screw that can be actuated using either the special tools designed for 216-type screws or the special tools designed for KS-type screws. In particular, screws of the present invention have a hexagon-shaped outer surface like a 216-type screw and a hexagon shaped recess with a cylindrical upstanding post in the middle of the recess like a KS-type screw.

REFERENCES:
patent: 2353531 (1944-07-01), Whitney
patent: 2590803 (1952-03-01), Unger et al.
patent: 4242932 (1981-01-01), Barmore
patent: 5249899 (1993-10-01), Wilson
patent: 5449260 (1995-09-01), Whittle

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