Electric socket and plug
Patent 4157855 Issued on June 12, 1979. Estimated Expiration Date: 
September 19, 1997. 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.
September 19, 1997. 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 2073645 2103040 2654865 2710384 2746021 2919317 3431428 3475715 InventorApplicationNo. 05/834189 filed on 09/19/1977US Classes:439/155, Distinct from separator439/346, Adapted to engage contact of mating part439/923SEPARATION OR DISCONNECTION AIDExaminersPrimary: Abrams, NeilInternational ClassesH01R 13/633 (20060101)H01R 13/635 (20060101) H01R 13/713 (20060101) H01R 13/70 (20060101) AbstractAn electric socket adapted to receive a plug connected to the cord of an appliance such as a vacuum cleaner. In one embodiment of the invention there is provided in the socket a pair of bimetallic elements designed to deflect when heated causing the plug prongs to be released whereupon the plug is pushed from the socket under spring pressure. In other embodiments of the invention electromagnets are provided to cause the desired prong deflection for release of the plug. Appropriate circuitry is provided for the desired operation of the socket including release of the plug at remote as well as near locations with respect to the socket. | |
