Fire escape – ladder – or scaffold – Ladder with land vehicle
Reexamination Certificate
2005-08-27
2010-06-29
Chin-Shue, Alvin C (Department: 3634)
Fire escape, ladder, or scaffold
Ladder with land vehicle
C182S129000, C182S230000
Reexamination Certificate
active
07743887
ABSTRACT:
A clip for maintaining a first side rail of a first ladder adjacent to a second side rail of a second ladder which is in series with the first side rail. The clip includes a first portion connected to a support element and a second portion connected to the support element. The first portion, second portion and support element are one continuous piece. The first portion defines a hooking engagement with the first side rail and the second portion defines a receiving engagement with the second side rail. The first and second portion opening from opposite sides of the support element, respectively, which conform to the portion of the respective side rail that it receives for removably and frictionally holding the respective side rails in a self-gripping and form-fitting manner such that the side rails are maintained adjacent and in series to each other so that no damage is possible to the ladders by relative movement of the side rails under dynamic conditions brought about by motion during transportation. A method for securely transporting a first ladder which defines a first plane for climbing and at least a second ladder which defines a second plane for climbing.
REFERENCES:
patent: 3283972 (1966-11-01), Kocina
patent: 5161909 (1992-11-01), Crouse et al.
patent: 5297889 (1994-03-01), Crouse et al.
Astor Kyle G.
Brightbill Shannon
Dangrow Joseph
Fisher Brian
Chin-Shue Alvin C
Schwartz Ansel M.
Werner Co.
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