Controlled access programmable event timer system

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Details

235382, 364401, 364569, 368 10, 34082534, G06F 1520, G04B 4700

Patent

active

047697652

ABSTRACT:
A control system is disclosed which can be attached to equipment such as appliances or automobiles, or built in as a part thereof. The control system includes an enabling/disabling device such as a relay in a circuit in the equipment. A time setting device is used to program a microprocessor with the times when the relay will open and close--thereby disabling and enabling the equipment. The time setting device can only be used to set the times by a person having an authentic authorization device such as a card or a key. The card is read by a card reader and the information obtained is compared by the microprocessor with the authentic information. In the case where a key is the authorization device, it is used to close a circuit to the microprocessor. A liquid crystal display is provided to display time information, and a rechargeable battery is included to prevent changing the time by unplugging the equipment.

REFERENCES:
patent: 4228543 (1980-10-01), Jackson
patent: 4279012 (1981-07-01), Beckedorff et al.
patent: 4455093 (1984-06-01), Bowen et al.
patent: 4521843 (1985-06-01), Pezzolo et al.
patent: 4624578 (1986-11-01), Green
patent: 4700296 (1987-10-01), Palmer, Jr. et al.

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