Lock-out enclosure for power connector
Patent 5073122 Issued on December 17, 1991. Estimated Expiration Date: 
May 22, 2010. 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.
May 22, 2010. 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 ReferencesElectrical plug lock Lock-out enclosure for power connector Patent #: 4957445 InventorApplicationNo. 527014 filed on 05/22/1990US Classes:439/134, Prong cover439/304, Including lock for retaining means (e.g., key or combination lock or requiring "special" tool)439/707Separable insulating cap and shell casingExaminersPrimary: Bradley, PaulaAttorney, Agent or FirmInternational ClassH01R 013/44AbstractA tubular enclosure for a power connector attached to a power supply line, whereby the enclosure can be moved along the line to a position enclosing the power connector; the enclosure serves as a lock-out device to prevent the connection of the power connector to a power source by unauthorized or untrained persons. In a preferred form of the invention the enclosure is permanently retained on the power line so that it is readily available for use when needed for the lock-out function. | |
