Permanently attachable key-activated on/off switch
Patent 4969833 Issued on November 13, 1990. Estimated Expiration Date: 
October 4, 2008. 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.
October 4, 2008. 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 3345603 3543218 Plug lock Electrical socket Electrical receptacle with releasable locking means Safety and security outlet Locking device for electrical plugs Wall outlet lock apparatus Security attachment for electrical plug Patent #: 4579410 InventorsApplicationNo. 253086 filed on 10/04/1988US Classes:439/133, WITH UNAUTHORIZED CONNECTION PREVENTER, E.G., KEY OR COMBINATION LOCK200/43.05, Actuator is circuit completing element200/43.11, Actuator locking device200/51.12, Meeting contacts of coupling members forming switch contacts439/346, Adapted to engage contact of mating partD13/137.3, Including switch or circuit breakerD13/158Switch or casing therefor (18)ExaminersPrimary: Bradley, PaulaAttorney, Agent or FirmInternational ClassesH01R 013/44H01R 013/625 AbstractA permanently attachable key-activated on-off switch comprises a housing with an electrical receptacle on one end and an electrical plug on the other. The electrical receptacle receives a locking pin that is inserted through the prongs of the receptacle and an appliance plug in the receptacle so that the appliance plug is permanently attached. A key switch is attached to the housing which controls and the flow of power between the electrical plug and the electrical receptacle when the electrical plug is inserted into a standard electrical outlet.Other References
Field of SearchSWITCH ACTIVATION INHIBITOR (E.G., UNAUTHORIZED/INADVERTENT USE PREVENTION)Actuator is circuit completing element Actuator locking device Combination lock controls actuator Reciprocating actuator (e.g., push button) Locked cover prevents access to actuator Switch in parallel with coupling contacts WITH UNAUTHORIZED CONNECTION PREVENTER, E.G., KEY OR COMBINATION LOCK Prong cover Including lock for retaining means (e.g., key or combination lock or requiring "special" tool) Adapted to engage contact of mating part Retaining functioning electrical component (e.g., tube, lamp, fuse, battery, etc.) | |
