Object monitoring and alarm device

Details Object monitoring and alarm device Object monitoring and alarm device

1988-01-20

1989-09-26

Orsino, Joseph A.

Communications: electrical

Condition responsive indicating system

Specific condition

340530, G08B 1314

Patent

active

048704059

ABSTRACT:
An object that is ordinarily held within a receptacle, such as a pen, is monitored to sense removal of the object from the receptacle. Removal of the object initiates a timing cycle. At the conclusion of the timing cycle, an alarm sounds unless the object has been replaced. A reset switch can be provided to reinitiate the timing cycle at any time. If desired, a plurality of object can be monitored, such that removal of any one object begins the timing cycle that leads to the alarm, and termination of the alarm or timing cycle requires replacement of all of the objects.

REFERENCES:
patent: 3959789 (1976-05-01), McGahee
patent: 4327360 (1982-04-01), Brown
patent: 4489314 (1984-12-01), Miller
patent: 4652865 (1987-03-01), Maharshak
patent: 4794378 (1988-12-01), Chen et al.

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