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US Patent 5427543 - Electrical connector prong lock
US Patent Issued on June 27, 1995
Estimated Patent Expiration Date:
May 2, 2014Estimated 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.
Estimated Patent Expiration Date:
May 2, 2014Estimated 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.AbstractAn 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. | InventorApplicationNo. 235874 filed on 05/02/1994US Classes:439/346Adapted to engage contact of mating partField of Search439/345, Retaining means439/346, Adapted to engage contact of mating part439/369, For unsupported coupling part and unsupported mating part, (e.g., connecting extension cords)439/507JUMPER (OR SHORT CIRCUITING COUPLING PART)ExaminersPrimary: Nguyen, KhiemUS Patent References2528121, 2801394, 3942856, Safety socket assemblyIssued on: 03/09/1976 Inventor: Mindheim, deceased , et al.4136919Electrical receptacle with releasable locking means Issued on: 01/30/1979 Inventor: Howard , et al. International ClassH01R 004/50 |
