Personal safety radio device

Details Personal safety radio device Personal safety radio device

1987-12-16

1989-09-26

Tokar, Michael J.

Telecommunications

Transmitter

Remote control of a transmitter

455100, H03B 100

Patent

active

048707007

ABSTRACT:
The personal safety radio device is carried by the person to be protected on a mounting device, for instance incorporated in the heel of a work shoe, and includes a transmitter powered by a current source specific to the device, a receiver and an antenna arrangement. In order to ensure a high operational reliability and a long maintenance-free service life at a high range of transmission the device- specific current source is a rechargeable accumulator which may be charged by a generator arrangement including a piezo-electric converter during the operational useage of the device. The piezo-electric converter is so arranged in the work shoe that it is acted on by the weight of the person wearing the work shoe and thus converts the pressure of the weight into electrical energy.

REFERENCES:
patent: 3806936 (1974-04-01), Koster
patent: 3825833 (1974-07-01), Bogue
patent: 4001798 (1977-01-01), Robinson
patent: 4402524 (1983-09-01), D'Antonio
patent: 4412355 (1983-10-01), Terbrack et al.
patent: 4430757 (1984-02-01), Szakvary
patent: 4606073 (1986-08-01), Moore
patent: 4703445 (1987-10-01), Dassler
patent: 4731870 (1988-03-01), Black et al.
patent: 4736196 (1988-04-01), McMahon
patent: 4736312 (1988-04-01), Dassler et al.

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