Rolling ladder

Details Rolling ladder Rolling ladder

2006-08-08

2006-08-08

Chin-Shue, Alvin (Department: 3634)

Fire escape, ladder, or scaffold

Ladder with land vehicle

C280S079700, C182S129000

Reexamination Certificate

active

07086501

ABSTRACT:
A ladder with a fixed axle wheel adapted to facilitate relocating the ladder. The ladder may be a step ladder or an extension ladder. The ladder includes a ladder base adapted to reside on a support surface, a ladder top opposite the ladder base, and ladder sides connected by steps, the ladder sides extending between the ladder base and the ladder top. The wheel is attached to one of the sides near the ladder base and is adapted to rollably support the ladder base when the ladder is moved. The wheel may be recessed into an opening on the ladder side to allow a larger diameter wheel to be used.

REFERENCES:
patent: 1004550 (1911-10-01), Bertke
patent: 1285918 (1918-11-01), Brown
patent: 1606198 (1926-11-01), Werk
patent: 3954155 (1976-05-01), Guidara
patent: 4106590 (1978-08-01), Tarran
patent: 4564203 (1986-01-01), Wilson
patent: 6585084 (2003-07-01), Gannon
patent: 6592134 (2003-07-01), Abraham
patent: 6880835 (2005-04-01), Tornabene et al.

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