Fire escape – ladder – or scaffold – With indicator – signal or alarm
Patent
1992-02-18
1993-06-22
Chin-Shue, Alvin C.
Fire escape, ladder, or scaffold
With indicator, signal or alarm
A62B 3300
Patent
active
052209776
ABSTRACT:
A fall indicating device including an indicating portion that is normally retained within the body of the fall indicator. Upon the exertion of sufficient force upon the fall indicator, as, for example, from the forces generated during fall arrest, a restraining member within the body of the fall indicator, such as a shear pin or a series of disk springs, releases the indicating portion, alerting the user that the fall restraining device has been subjected to fall arrest forces. In the case of fall indicator using a shear pin, the indicator may require replacement after being subjected to fall arrest forces. However, a fall indicator using a spring or series of disk springs may be reset after use without needing to be replaced.
The fall indicating device may also be integrally attached to a connecting member such as a snap hook. When integrally connected to a snap hook, the snap hook, using the free end of the fall indicator, may be attached to the line or cable issuing from a safety device such as a self retracting lifeline.
REFERENCES:
patent: 4253544 (1981-03-01), Dalmaso
patent: 4538702 (1985-09-01), Wolner
patent: 4660679 (1987-04-01), Ostrobrod
patent: 4877110 (1989-10-01), Wolner
Chin-Shue Alvin C.
D B Industries, Inc.
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