Fire escape – ladder – or scaffold – Means maintaining platform level on angularly movable support – Swingable support
Reexamination Certificate
2007-02-20
2007-02-20
Chin-Shue, Alvin (Department: 3634)
Fire escape, ladder, or scaffold
Means maintaining platform level on angularly movable support
Swingable support
C182S065100
Reexamination Certificate
active
10828821
ABSTRACT:
A cradle assembly for aerial ladders (or booms) includes an assembly for rotatably and pivotally supporting an aerial ladder or boom, a first pair of upwardly extending parallel support flanges and a second pair of upwardly extending parallel support flanges extending upwardly from the surface of said turntable, the second pair of flanges extending to a substantially lesser elevation than said first pair of flanges; a cradle formed by a pair of parallel cradle arms laterally spaced to support a base end of said ladder or boom therebetween and at least one cross member connecting said arms, each of said arms having an end pivotally connected to a flange of said first pair of flanges; a hydraulic cylinder pivotally (which may be dual acting) attached to each of said cradle arms at a point spaced away from said first pair of flanges and an extendable-retractable rod projecting from each hydraulic cylinder and having an outer end pivotally attached to a flange of said second pair of flanges.
REFERENCES:
patent: 2951549 (1960-09-01), Holan et al.
patent: 3648782 (1972-03-01), Mazzarins
patent: 3749182 (1973-07-01), Rockwell
patent: 3966344 (1976-06-01), Haker et al.
patent: 4054182 (1977-10-01), Ide
patent: 4094381 (1978-06-01), Wilkerson
patent: 4128139 (1978-12-01), Cook, Sr.
patent: 4335803 (1982-06-01), Sugita
patent: 4512439 (1985-04-01), Howell
patent: 4923050 (1990-05-01), Vitols
patent: 5339919 (1994-08-01), Boyd
patent: 5366052 (1994-11-01), Keh-Lin
patent: 5626440 (1997-05-01), Greene, Jr. et al.
patent: 5924523 (1999-07-01), Krause
patent: 6146078 (2000-11-01), Hamill et al.
patent: 6629582 (2003-10-01), Barnett
patent: 04700912.1-2223 (2006-05-01), None
Longenecker Jason L.
Salmi James A.
Wissler Reid L.
Chin-Shue Alvin
Foster Swift Collins & Smith, P.C.
Maki Allan O.
Spartan Motors Inc.
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