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US 4,758,826 AGranted
Work area advanced warning system
OwnerRichard E. Wallinventor
Life of this patent
Estimating the term…
Abstract
The work area advanced warning system is for use on the work site to give warning of impending danger in order to give time for workers and others to avoid the danger before the damage. Dangers are sensed by the use of contained exploding charges, smoke and horns or sirens activated by remote control to create unnatural comotion thus alerting the senses to potential loss.
Claims4
An early warning safety device for warning of an impending dangerous condition in noisy environments, said early warning device comprising:
- (a) a base supporting an upwardly extending housing defining an aperture therein;
- (b) a receiver secured to said housing operable in response to the reception of a broadcast alarm;
- (c) an explosive charge within said housing;
- (d) a detonating device adapted to detonate said explosive and operatively connected to said receiver;
- (e) audible alarm means associated with said housing;
- and
- (f) at least one remotely located transmitter for selectively emitting a broadcast signal upon activation whereby upon receipt of a broadcast signal, said receiver activates said audible alarm giving an audible signal of a potentially dangerous condition and further activates said detonating device exploding said explosive charge to emit smoke through said aperture in said housing.
4 more elements
Dependencies are inferred from the claim text.