Plug lock

• US 4,080,029 A
• Filed: 03/10/1976
• Issued: 03/21/1978
• Est. Priority Date: 03/10/1976
• Status: Expired due to Term

• Current Assignee: St. Fort, Raymond
• Original Assignee: St. Fort, Raymond
• Inventors: St. Fort, Raymond
• Primary Examiner(s): Lake, Roy
• Assistant Examiner(s): Bicks, Mark S.
• Application Number:
  US05/665,784
• Time in Patent Office: 741 Days
• Field of Search: 339/34, 339/45 R, 339/45 M, 339/75 P, 339/82
• US Class Current: 439/131
• CPC Class Codes: H01R 13/6397 with means for preventing unauthorised use

Abstract

An electrical connector comprising a male plug is assembled in a housing which is permanently secured to a wall outlet, the male plug being movable forwardly in the housing into engagement with the terminals of the wall outlet, the housing having a key-operated lock arranged to lock the male plug in its forward position in the housing.

Claims

1. A lockable electric plug assembly comprising, in combination:

a wall outlet, a housing constructed and arranged to be fixedly secured to said wall outlet, carrier-means arranged to be reciprocably mounted in said housing, said carrier means having a locking detent, a conventional male plug assembled in said carrier means and arranged to be moved forwardly by said carrier means into operative engagement with said wall outlet, manually operated means arranged to engage and move said carrier-means forwardly in said housing, key-operated locking means mounted on said housing and arranged to engage the detent of said carrier means and lock said carrier means in its forward position in said housing wherein said male plug is in operative engagement with said wall outlet, and resilient means in said housing arranged to move said carrier-means, with said male plug, rearwardly in said housing when said carrier means is unlocked by said key-operated locking means thereby to disengage said male plug from said wall outlet.

2. A lockable electric plug assembly according to claim 1 wherein said manually operated means comprises a push pin mounted in said housing in operative engagement with said carrier-means.

3. A lockable electric plug assembly according to claim 2 wherein said resilient means comprises a coil spring assembled in said housing in engagement with the forward end of said carrier-means for resisting, normally, the forward movement of said carrier-means in said housing.

4. A lockable electric plug assembly according to claim 3 wherein said key-operated locking means is integral with said housing.