Portable control code transmitter with delayed code neutralizati

Details Portable control code transmitter with delayed code neutralizati Portable control code transmitter with delayed code neutralizati

1986-02-24

1987-06-09

Weldon, Ulysses

Communications: electrical

Continuously variable indicating

With meter reading

34082534, 34082569, 34082572, 361172, H04Q 100

Patent

active

046723765

ABSTRACT:
A portable case (2) is provided for emitting, in response to pressure on a push button (1), a control signal (S) coded in accordance with a code recorded in said case. Timing means (8) are provided for automatically neutralizing the code when a predetermined time has elapsed from a predetermined moment, which then makes the case inoperative.

REFERENCES:
patent: 3891980 (1975-06-01), Lewis et al.
patent: 3906447 (1975-09-01), Crafton
patent: 3959630 (1976-05-01), Hogberg
patent: 4473821 (1984-09-01), Yang et al.
patent: 4573046 (1986-02-01), Pinnow

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