Electrical receptacle with releasable locking means
Patent 4136919 Issued on January 30, 1979. Estimated Expiration Date: 
November 4, 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.
November 4, 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 2664734 2704831 2732531 2847652 3489989 Plug cap Patent #: 4060297 InventorsApplicationNo. 05/848493 filed on 11/04/1977US Classes:439/346, Adapted to engage contact of mating part439/347, Laterally moving slide439/475Frangible elementExaminersPrimary: Abrams, NeilAttorney, Agent or FirmInternational ClassesH01R 13/20 (20060101)H01R 13/02 (20060101) H01R 13/633 (20060101) H01R 13/62 (20060101) AbstractAn electrical cord connecting receptacle, which may be of the grounding type, incorporates a mechanism which locks the current carrying conductor blades of a plug or cap to the current carrying conductors of the receptacle. The locking mechanism prevents the cap from being accidentally withdrawn from the receptacle under normal conditions of use. Through the use of spring-biased pins positioned to engage holes in the cap blades, the device provides for snap-in receipt of the cap blades, release of the cap by manual release of the pins, and emergency release by an unusually heavy pull on the cap. | |
