Male electrical plug locking device
Patent 6508654 Issued on January 21, 2003. Estimated Expiration Date: 
March 13, 2022. 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.
March 13, 2022. 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 2664734 2733416 Electric plug lock Electrical male plug lock Plug lock Electrical cord lock Electrical plug locking device Electric cord plug lock Patent #: 6159025 InventorApplicationNo. 098065 filed on 03/13/2002US Classes:439/134Prong coverExaminersPrimary: Paumen, Gary F.Attorney, Agent or FirmInternational ClassH01R 013/44AbstractThe invention is a compact locking device with minimal moving parts for securing an electrical power cord with male prongs having holes without damaging the prongs of the plug. The device comprises a rigid body, inside of which is a lock assembly, an elongated member cooperatively engaged to the lock assembly and an inwardly biased generally V-shaped spring with two outer arm members, each including a knob thereon. The knobs are positioned to cooperatively engage the holes in the prongs when the lock is engaged, such as the insertion of a key, and the elongated member spreads the outer arm members of the spring. The knobs are separated from the holes when the lock is disengaged, i.e. the key is rotated towards its initial position. The body is shaped so that a third ground prong on the plug would not interfere with the device. | |
