Step stool with step lock

Details Step stool with step lock Step stool with step lock

2005-06-07

2005-06-07

Thompson, II, Hugh B. (Department: 3634)

Fire escape, ladder, or scaffold

Ladder with pivoted prop

Reexamination Certificate

active

06902035

ABSTRACT:
A step stool includes a frame, a step coupled to the frame for pivotable movement, and a step lock. The step lock is used to lock the step to block pivotable movement of the step relative to the frame.

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patent: 6026933 (2000-02-01), King et al.
patent: 6390237 (2002-05-01), Kim et al.
patent: 6390238 (2002-05-01), Gibson et al.
patent: 6427805 (2002-08-01), Gibson et al.
patent: 6550579 (2003-04-01), Gibson et al.

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