Fire escape – ladder – or scaffold – With indicator – signal or alarm
Patent
1994-10-20
1999-12-28
Chin-Shue, Alvin
Fire escape, ladder, or scaffold
With indicator, signal or alarm
182 3, A62B 3500
Patent
active
060068604
ABSTRACT:
A harness or belt to be worn by a person connected to some elevated anchor point, e.g., a rope grab on a safety line, to prevent the person from a fall. The device comprises at least one web or strap of a fabric which is subject to a shock load when the device has been used to arrest the fall of the person and plural shock load indicating strands or fibers located on the web or strap. The web or strap is a generally flat member having an exterior surface and is formed of plural interlaced strands of a first stretchable, yet strong material, e.g., nylon or polyester. The shock load indicating strands are of a contrasting color to the strands forming the strap or web and are visible from the exterior surface of the web. The shock load indicating strands are of a lesser stretchability than the strands of the web or strap. Accordingly, upon the shock loading of the harness or belt the shock load indicating strands rupture and fray out of the exterior surface of the web, whereupon the frayed ends are readily visible. This appearance indicates that the device has been used to arrest a fall and should be discarded or refurbished.
REFERENCES:
patent: 2294897 (1942-09-01), Ellis
patent: 2428559 (1947-10-01), Ellis
patent: 2613865 (1952-10-01), Rose
patent: 3025995 (1962-03-01), Koelsch et al.
patent: 3444957 (1969-05-01), Ervin, Jr.
patent: 3801340 (1974-04-01), Ellis
patent: 3804698 (1974-04-01), Kinloch
patent: 4253544 (1981-03-01), Dalmaso
patent: 4446944 (1984-05-01), Forrest et al.
patent: 4538702 (1985-09-01), Wolner
patent: 4662487 (1987-05-01), Koch
LandOfFree
Safety harness or belt with fiber means to indicate shock loadin does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Safety harness or belt with fiber means to indicate shock loadin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Safety harness or belt with fiber means to indicate shock loadin will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2376465