Fire escape – ladder – or scaffold – Ladder and platform
Reexamination Certificate
2005-10-25
2005-10-25
Lev, Bruce A. (Department: 3634)
Fire escape, ladder, or scaffold
Ladder and platform
C182S116000, C182S129000
Reexamination Certificate
active
06957718
ABSTRACT:
A device (10) which assists a person (P) in working on the engine (E) of a vehicle (V) includes a base member (11) which rests on the ground and has a socket (17) extending upwardly therefrom. A post assembly (23) includes a stem portion (24) which is selectively positionable within the socket (17). The stem portion (24) is provided with a plurality of opposed spaced apertures (27), and a pin (28) is inserted through a selected of the opposed apertures (27) and through apertures in the socket (17) to adjust the height of the device (10). A step (29) is carried by the stem portion (24) at a selected height by a pin (31) received through the selected apertures (27) and through apertures in a flange (30) carried by the step (29). A platform (36) is pivotally attached near the top of the post assembly (23) by a pin (45) and the angular orientation of the platform (36) can be adjusted and maintained by a pin (48) selectively positioned in one of a plurality of apertures (46) formed in mounting plates (44) attached to the post assembly (23).
REFERENCES:
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patent: 4863178 (1989-09-01), Friesen
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patent: 5655623 (1997-08-01), Skyba
patent: 6105719 (2000-08-01), Lensing
patent: 6540301 (2003-04-01), Bottoms
patent: 6595590 (2003-07-01), Bottoms
patent: 6641146 (2003-11-01), Reese
Three photographs of the device in existence on Apr. 11, 2001.
One photograph of a prior art device (undated).
Studer Keith R.
Studer Robert E.
Whiteside Kirt E.
Whiteside Terry L.
Lev Bruce A.
Renner Kenner Greive Bobak Taylor & Weber
Whiteside Mfg. Co.
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