Patent US4247743A successfully refreshed from Google Patents.
US4247743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for preventing unauthorized usage of appliance
Assignee: Individual
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Filing: 1979-10-10
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Granted: 1981-01-27
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Expires: 1999-10-10
Abstract
Abstract The present invention relates to a device that prevents unauthorized use of an appliance inasmuch as the unauthorized use results in clear evidence of such. Basically the device of the present invention comprises an electrical coupler having means for receiving a male appliance plug and male plug means for insertion into a conventional electrical outlet. A flexible tie device is provided that binds and effectively locks the male appliance plug to the electrical coupler in such a manner that the male appliance plug cannot be removed from the electrical coupler without destroying the integrity of the flexible tie device. In addition, a lock type switch is operatively associated with said electrical coupler for opening and closing the electrical circuit therein and as such, the same provides a master control for a coupled appliance.
Inventors
- 👤 David O. Hinton
- 👤 David T. Mage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:58
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/62; H01R13/639; H01R13/6397; H01H; H01H27/00; H01R13/66; H01R13/70
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
223 words
A means for detecting the unauthorized use of an appliance having an AC male plug associated therewith, comprising: electrical coupling means for plugging into a conventional wall outlet and including male plug means adapted to be connected into said wall outlet and female receiving means for receiving the male plug of said appliance, said electrical coupling means including an electrical circuit operatively interconnected between said male plug means and said female receiving means thereof; switch means operatively connected between said male plug means and said female receiving means of said electrical coupling means for selectively opening and closing the circuit therebetween, said switch means having locking means associated therewith for selectively locking said switch means in an open position so as to prevent the conduction of current between said male plug means and said female receiving means of said electrical coupling means; and flexible tie coupling means operatively engaged with said appliance male plug and said electrical coupling means and generally bound therearound for maintaining said male plug of said appliance in locked engagement with said electrical coupling means, said tie coupling means including irreversible tie means that may not be disengaged and reengaged without destroying the integrity of the tie coupling means, whereby the actuating of said appliance is controlled by the switch and lock means associated with said electrical coupling means.
Claim 2
Dependent Claim
223 words
A means for detecting the unauthorized use of an appliance having an AC male plug associated therewith, comprising: electrical coupling means for plugging into a conventional wall outlet and including male plug means adapted to be connected into said wall outlet and female receiving means for receiving the male plug of said appliance, said electrical coupling means including an electrical circuit operatively interconnected between said male plug means and said female receiving means thereof; switch means operatively connected between said male plug means and said female receiving means of said electrical coupling means for selectively opening and closing the circuit therebetween, said switch means having locking means associated therewith for selectively locking said switch means in an open position so as to prevent the conduction of current between said male plug means and said female receiving means of said electrical coupling means; and flexible tie coupling means operatively engaged with said appliance male plug and said electrical coupling means and generally bound therearound for maintaining said male plug of said appliance in locked engagement with said electrical coupling means, said tie coupling means including irreversible tie means that may not be disengaged and reengaged without destroying the integrity of the tie coupling means, whereby the actuating of said appliance is controlled by the switch and lock means associated with said electrical coupling means.
Claim 3
Dependent Claim
183 words
The device of claim 1 wherein said tie coupling means includes an elongated flexible tying device that comprises an elongated tongue having a series of transversely spaced teeth extending therealong on one side and a ratchet locking receiver having a tooth type latch formed therein, and wherein said tongue is adapted to be threaded through said ratchet locking receiver such that the tooth type latch engages an adjacent tooth on said tongue and prohibits the tongue from being reversed and pulled back out of said ratchet locking receiver, such that when the tongue is securely locked within the ratchet locking receiver the flexible tie coupling means forms a closed locked loop; and wherein the tongue portion of said flexible tongue device is divided such that the same may extend around opposite sides of the male plug of said appliance, and wherein said electrical coupling means is provided with an opening for receiving said flexible tying device such that in a tyed and locked position the flexible tying device extends around said appliance male plug and through said opening within said electrical coupling means.
Claim 4
Dependent Claim
21 words
The device of claim 2 wherein said division within said tongue extends vertically through said tongue about an intermediate portion thereof.
Claim 5
Dependent Claim
35 words
The device of claim 3 wherein said locking means comprises a cylinder type lock assembly operatively associated with said switch means of said electrical coupler means for actuating the switch between open and closed position.
Claim 6
Dependent Claim
94 words
The device of claim 2 wherein said division within said tongue is provided by upper and lower tongue sections that are adapted to be separated in order that the two sections may be appropriately directed around the male plug of said appliance, and wherein said upper and lower tongue sections are further adapted to merge together after being directed around said male plug of said appliance where the two tongue sections may be threaded through said opening within said electrical coupling means and on through said ratchet locking device of said flexible tying device.
Claim 7
Dependent Claim
39 words
The device of claim 5 wherein said two sections include cooperating interengaging teeth about inner adjacent faces of each such that when the two sections are laid together and merged the two sections are held relatively stationary to each.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-01-27 | 1984-07-28 | 1985-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-27 | 1988-07-28 | 1989-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-27 | 1992-07-28 | 1993-01-27 | $7700.00 | Window Closed / Lapsed |