Safety plugs for cylindrical openings

Details Safety plugs for cylindrical openings Safety plugs for cylindrical openings

2007-05-15

2007-05-15

Ta, Tho D. (Department: 2833)

Electrical connectors

With unauthorized connection preventer, e.g., key or...

Reexamination Certificate

active

11214110

ABSTRACT:
A safety plug includes a body configured to be inserted into a cylindrical opening. A locking device is connected to an end of the body, wherein the locking device has a larger diameter than the cylindrical opening in which the body is configured to be inserted. Following insertion into the cylindrical opening, the locking device resists removal of the safety plug. A control device is operatively coupled to the locking device, wherein pushing the control device towards the locking device while pulling on the body disengages the locking device from cylindrical opening.

REFERENCES:
patent: 2446661 (1948-08-01), Murdock
patent: 2966276 (1960-12-01), Hing
patent: 5797431 (1998-08-01), Adams
patent: 6170530 (2001-01-01), Steblina
patent: 2004/0187945 (2004-09-01), Flanagan

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