Fire escape – ladder – or scaffold – Combined
Patent
1994-02-16
1995-08-01
Chin-Shue, Alvin C.
Fire escape, ladder, or scaffold
Combined
248 77, E06C 700
Patent
active
054373450
ABSTRACT:
An apparatus for connecting a waterway, having a nozzle, to various sections of an aerial ladder. The connecting apparatus comprises an off-set cam within a cylindrical sleeve. One end of a connecting link is attached to the cylindrical sleeve. The other end fits within the clevises attached to the different sections of the ladder and has an aperture for receiving a clevis pin which is passed through the clevis and connecting link to attach the waterway to the selected ladder section. To firmly lock the waterway to the ladder section, a rotatable shaft, supported by bearings and having one end attached to the off-set axis of the cam, is rotated by means of a handle located on the exterior of the bracket. The rotation of the shaft and cam urge the waterway bracket against a step on the selected ladder section and thus securely lock the waterway in place.
REFERENCES:
patent: 451708 (1891-05-01), Crafts
patent: 1451006 (1923-04-01), Blaw
patent: 1583772 (1926-05-01), Blaw
patent: 1726649 (1929-09-01), Callaghan
patent: 2227779 (1941-01-01), Grant
patent: 2593921 (1952-04-01), Robinson
patent: 3675721 (1972-07-01), Davidson
patent: 4007793 (1977-02-01), Hux
patent: 5228796 (1993-07-01), Kao
Schmidt Frances E.
Schultz Wendy L.
Zimmer Randy W.
Chin-Shue Alvin C.
Pierce Manufacturing Inc.
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