Ski alarm system

Details Ski alarm system Ski alarm system

1991-07-30

1993-08-10

Mullen, Thomas

Communications: electrical

Condition responsive indicating system

Specific condition

200DIG29, 340529, 340573, 340521, G08B 1314, G08B 2300

Patent

active

052353214

ABSTRACT:
An alarm unit for a ski has a battery powered circuit which energizes an audible alarm in response to the output from a movement detector on the indication of absence of movement for a predetermined time. This allows a buried ski or a buried skier to be detected. A remotely controlled mode switch enables the unit to be switched to a theft mode in which the alarm is energized on detection of movement by the movement responsive unit.

REFERENCES:
patent: 3988724 (1976-10-01), Anderson
patent: 4023157 (1977-05-01), Miller
patent: 4279433 (1981-07-01), Petaja
patent: 4450437 (1984-05-01), Ho
patent: 4535322 (1985-08-01), Yeski
patent: 4603328 (1986-07-01), Larson
patent: 4833456 (1989-05-01), Heller
patent: 4835523 (1989-05-01), Pruett
patent: 4855720 (1989-08-01), Donovan

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