Title: Electrical receptacle with releasable locking means

Abstract: An electrical cord connecting receptacle, which may be of the grounding type, incorporates a mechanism which locks the current carrying conductor blades of a plug or cap to the current carrying conductors of the receptacle. The locking mechanism prevents the cap from being accidentally withdrawn from the receptacle under normal conditions of use. Through the use of spring-biased pins positioned to engage holes in the cap blades, the device provides for snap-in receipt of the cap blades, release of the cap by manual release of the pins, and emergency release by an unusually heavy pull on the cap.

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Other info:

Inventors: Howard, Guy W. (San Anselmo, CA, US)
Dodd, Brian W. (San Geronimo, CA, US)

Application Number: 848493
Filing Date: 1977-11-04
Publication_date: 1979-01-30
Assignee:
Primary Class(es): 439/346 439/347, 439/475
Other Classes:
US Patent Ref:

2664734	Jan, 1954	McEneaney	339/37.
2704831	Mar, 1955	Smith	339/75.
2732531	Jan, 1956	Janowiec	339/91.
2847652	Aug, 1958	Kokalas	339/45.
3489989	Jan, 1970	Robaczewski	339/75.
4060297	Nov, 1977	Marshall et al.	339/37.

Other Refs:
Primary Examiner: Abrams, Neil
Assistant Examiner:
Attorney: Freiburger; Thomas M.