US4758826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Work area advanced warning system
Assignee: Individual
•
Filing: 1985-09-19
•
Granted: 1988-07-19
•
Expires: 2005-09-19
Abstract
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.
Inventors
- 👤 Richard E. Wall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:51
CPC Classifications
G; G08; G08B; G08B7/00; G08B7/08
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
136 words
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.
Claim 2
Dependent Claim
136 words
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.
Claim 3
Dependent Claim
24 words
The device of claim 1 further including safety switch means on said detonating device and on said transmitting device for selectively de-activating said devices.
Claim 4
Dependent Claim
15 words
The device of claim 1 further including a weather shield selectively removable from said housing.
Claim 5
Dependent Claim
27 words
The device of claim 1 wherein said housing is generally cylindrical and said weather shield comprises a generally circular cap with apertures extending about the periphery thereof.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-07-19 | 1992-01-18 | 1992-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-19 | 1996-01-18 | 1996-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-19 | 2000-01-18 | 2000-07-19 | $7700.00 | Window Closed / Lapsed |