Ladder with side support enhancement

Details Ladder with side support enhancement Ladder with side support enhancement

2005-03-15

2005-03-15

Chin-Shue, Alvin (Department: 3634)

Fire escape, ladder, or scaffold

Ladder with pivoted prop

Lateral prop

C182S159000

Reexamination Certificate

active

06866119

ABSTRACT:
A ladder includes a standing frame comprising two parallel standing side legs, a plurality of step platforms transversely extended between the standing side legs of the standing frame, and a side support enhancement including two side ground supports each having a ground end and a pivot end pivotally connected to the respective standing side leg, two reinforcing arms pivotally connected to the side ground supports respectively; and two sliding joints for slidably connecting the reinforcing arms with bottom ends of the standing side legs respectively. Therefore, the reinforcing arms are slid inwardly to pivotally pull the side ground supports to align with the standing side legs respectively to form a compact unit and are slid outwardly to pivotally push the side ground supports away from the standing side legs respectively so that the side ground supports are inclindedly and outwardly extended from the standing side legs respectively.

REFERENCES:
patent: 400778 (1889-04-01), Lowe
patent: 1054108 (1913-02-01), Garraway
patent: 3978944 (1976-09-01), Hickman et al.
patent: 4011926 (1977-03-01), Larson et al.
patent: 4569419 (1986-02-01), Stoltz

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