U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Plug locking mechanism

Patent 6979220 Issued on December 27, 2005. Estimated Expiration Date: Icon_subject June 29, 2023. 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

Safety socket assembly
Patent #: 3942856
Issued on: 03/09/1976
Inventor: Mindheim, deceased ,   et al.

Electrical socket
Patent #: 4085991
Issued on: 04/25/1978
Inventor: Marshall, et al.

Electrical receptacle with releasable locking means
Patent #: 4136919
Issued on: 01/30/1979
Inventor: Howard ,   et al.

Electric socket and plug
Patent #: 4157855
Issued on: 06/12/1979
Inventor: Chan

Television viewing control device
Patent #: 4348696
Issued on: 09/07/1982
Inventor: Beier

Television monitor
Patent #: 4484220
Issued on: 11/20/1984
Inventor: Beetner

Permanently attachable key-activated on/off switch
Patent #: 4969833
Issued on: 11/13/1990
Inventor: Lindow, et al.

Time control device for appliances
Patent #: 5046157
Issued on: 09/03/1991
Inventor: Smith, et al.

Home entertainment equipment control apparatus
Patent #: 5051837
Issued on: 09/24/1991
Inventor: McJunkin

Electric plug lock
Patent #: 5055057
Issued on: 10/08/1991
Inventor: Boyer

More ...

Inventors

Assignee

Application

No. 10610845 filed on 06/29/2003

US Classes:

439/346, Adapted to engage contact of mating part439/347, Laterally moving slide439/134, Prong cover439/304, Including lock for retaining means (e.g., key or combination lock or requiring "special" tool)348/725, RECEIVER CIRCUITRY439/133, WITH UNAUTHORIZED CONNECTION PREVENTER, E.G., KEY OR COMBINATION LOCK70/57SPECIAL APPLICATION

Examiners

Primary: Ta, Tho D.

Attorney, Agent or Firm

Foreign Patent References

  • WO 02/41084 WO 05/01/2002

International Classes

H01R013/625
G04G015/00

Abstract

This invention secures an electrical plug by inserting a locking pin through a hole in the prong(s) of a male plug or through a hole in a female plug and through a corresponding hole in the male or female receptacle that secures the device plugged into the receptacle. The locking pin is secured by a latching system or locking mechanism that limits access to those not authorized. This invention may be used in conjunction with access-control devices that control access to users of appliances such as video game systems, TVs, computers and the like.

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