U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Electrical connector prong lock

Patent 5427543 Issued on June 27, 1995. Estimated Expiration Date: Icon_subject May 2, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

2528121

2801394

Safety socket assembly
Patent #: 3942856
Issued on: 03/09/1976
Inventor: Mindheim, deceased ,   et al.

Electrical receptacle with releasable locking means Patent #: 4136919
Issued on: 01/30/1979
Inventor: Howard ,   et al.

Inventor

Application

No. 235874 filed on 05/02/1994

US Classes:

439/346Adapted to engage contact of mating part

Examiners

Primary: Nguyen, Khiem

International Class

H01R 004/50

Abstract

An electrical connector prong lock including a spring loaded insulating pin which is passed through a bearing member affixed to the electrical connector prong lock and through a hole commonly found near the end of a prong of a male electrical plug. A sliding cam member is employed to move the insulating pin member into and out of engagement. In an alternate embodiment the enlarged end of a ground return prong is engaged by a forked insulating member affixed to the electrical connector prong lock thereby preventing prong release.

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