Warning apparatus against the coverlet out of position

Details Warning apparatus against the coverlet out of position Warning apparatus against the coverlet out of position

1986-04-16

1987-11-10

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

340540, 340573, G08B 2100

Patent

active

047060719

ABSTRACT:
A warning apparatus to signal that a coverlet is out of position, includes a belt, a buckle mounted on one end of the belt, a rim on the buckle, a catch mounted on the other end of the belt, and a photoelectric circuit of a first photo sensitive element provided on the buckle and a second photo sensitive element provided on the belt. The first and second photo sensitive elements are separated a predetermined distance and connected in parallel to the photoelectric circuit means, and a buzzer is connected to the photoelectric circuit means.

REFERENCES:
patent: 2908899 (1959-10-01), Crafts
patent: 4205671 (1980-06-01), Lassen
patent: 4411034 (1983-10-01), Williams
patent: 4614939 (1986-09-01), Wang

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