Theft deterring security system for attachment to powered applia

Details Theft deterring security system for attachment to powered applia Theft deterring security system for attachment to powered applia

1989-03-02

1991-06-04

Scott, J. R.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

For relays or solenoids

361189, 34082531, E05B 4900

Patent

active

050219162

ABSTRACT:
A security device intervenes in the primary power input connection to an existing appliance. The user must set numbered thumbwheels to a correct numerical sequence preset through those same thumbwheels by the appliance owner before the device will connect the primary power to the attached appliance. Once the correct code is dialed in via the thumbwheels, a relay latches so that power is continuously available to the appliance until the primary power is lost as by disconnection of the appliance power cord for more than a short period of time. Reentry of the unique code is then necessary to operate the appliance. Labels are permanently affixed to the appliance to forewarn that it is not operational unless the correct code is entered. The attachment module is encased in potting compound to prevent bypassing of the power controlling circuits. The appliance is thus useless and of little value to a thief since it requires obvious disfiguring of the appliance to remove the combination lock assembly and/or the labels.

REFERENCES:
patent: 3319128 (1967-05-01), Nilssen
patent: 3755718 (1973-08-01), Nicholson
patent: 4051548 (1977-09-01), Hamada
patent: 4103289 (1978-07-01), Kolber
patent: 4290286 (1981-09-01), Rae
patent: 4494114 (1985-01-01), Kaish
patent: 4604708 (1986-08-01), Lewis
patent: 4683462 (1987-07-01), Takeda et al.
patent: 4720700 (1988-01-01), Siebold et al.
patent: 4734896 (1988-03-01), Soma et al.
patent: 4907429 (1990-03-01), Davis et al.

Affiliated with

Also associated with

Rating

Theft deterring security system for attachment to powered applia does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Theft deterring security system for attachment to powered applia, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Theft deterring security system for attachment to powered applia will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1030953