Combination hand truck ladder

Details Combination hand truck ladder Combination hand truck ladder

2005-09-14

2009-02-10

Mitchell, Katherine (Department: 3634)

Fire escape, ladder, or scaffold

Convertible

Ladder

C182S020000

Reexamination Certificate

active

07487859

ABSTRACT:
A combination hand truck ladder, which includes two front rails, two rear rails pivoted to the front rails, two folding braces coupled between the front rails and the rear rails, platforms pivoted to the front rails at different elevations and linked by two links, two wheels respectively pivoted to the bottom ends of the rear rails, two slides respectively affixed to the rear rails and slidably coupled to the links, a carrier shell pivoted to the front rails at the bottom side, and a hand truck handle affixed to the top ends of the rear rails.

REFERENCES:
patent: 4258826 (1981-03-01), Murray
patent: 4494626 (1985-01-01), Ast
patent: 6039149 (2000-03-01), Bedja et al.
patent: 6880835 (2005-04-01), Tornabene et al.
patent: 7104362 (2006-09-01), Meeker
patent: 2004/0200667 (2004-10-01), Babkes et al.

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