Fire escape – ladder – or scaffold – Unitary foldable – rigid scaffold or ladder – Collapsible ladder
Reexamination Certificate
2001-04-17
2002-09-24
Lev, Bruce A. (Department: 3634)
Fire escape, ladder, or scaffold
Unitary foldable, rigid scaffold or ladder
Collapsible ladder
C182S129000, C182S165000, C280S642000
Reexamination Certificate
active
06454050
ABSTRACT:
BACKGROUND AND SUMMARY OF THE INVENTION
The present invention relates to a step stool, and particularly, to a foldable step stool having legs that move relative to one another between an opened use position and a closed storage position. More particularly, the present invention relates to a foldable step stool provided with a carrying handle for use when the step stool has been folded to assume the closed storage position.
Step stools have a frame and one or more steps that individuals use for elevation when reaching for objects, painting walls, or any everyday task where extra elevation would be helpful. Step stool frames are often foldable for ease of storage while the step stool is not being used.
According to the present invention, a foldable step stool includes a frame having a front leg and a rear leg coupled to the front leg for movement relative to the front leg, a handle, and a pivot support mount configured to support the handle for pivotable movement on the front leg about a pivot axis. A retainer is coupled to the handle to move therewith about the pivot axis and arranged to trap a portion of the rear leg between the pivot support mount and the retainer upon movement of the handle to a predetermined position relative to the rear leg to lock the front leg to the rear leg.
In preferred embodiments, the rear leg includes a leg member and a handle anchor coupled to the leg member. The handle anchor is configured to include the portion of the rear leg that is trapped between the pivot support mount and the retainer. The pivot support mount includes a foundation coupled to the front leg and a shaft coupled to the foundation to support the handle for pivotable movement relative to the front leg about the pivot axis.
Additional features of the invention will become apparent to those skilled in the art upon consideration of the following detailed description of preferred embodiments exemplifying the best mode of carrying out the invention as presently perceived.
REFERENCES:
patent: 1557490 (1925-10-01), Videtta
patent: 1817233 (1931-08-01), Bumgardner
patent: 2776856 (1957-01-01), Ingram
patent: 2873995 (1959-02-01), Turner
patent: 2908362 (1959-10-01), Burtchaell
patent: 2967730 (1961-01-01), Vann
patent: 2997326 (1961-08-01), Daum
patent: 3718242 (1973-02-01), Larson
patent: 3892343 (1975-07-01), Warner
patent: 4483415 (1984-11-01), Disston et al.
patent: 4485892 (1984-12-01), Maloney et al.
patent: 4707883 (1987-11-01), Irani et al.
patent: 4842315 (1989-06-01), Nordmeyer
patent: 5158151 (1992-10-01), Chang
patent: 5161843 (1992-11-01), Baldwin
patent: 5170862 (1992-12-01), Chang
patent: 5210904 (1993-05-01), Pratt
patent: 5232796 (1993-08-01), Baumgartner
patent: 5511289 (1996-04-01), Bush et al.
patent: 5762163 (1998-06-01), Kain
patent: 5937968 (1999-08-01), Gibson et al.
patent: 5992567 (1999-11-01), Chiu
patent: 6026933 (2000-02-01), King et al.
patent: 6039149 (2000-03-01), Bedja et al.
patent: 2002/0017431 (2002-02-01), Gibson et al.
Gibson William R.
Giner Enrique R.
Moreno-Giner Maria Antonieta
Barnes & Thornburg
Cosco Management Inc.
Lev Bruce A.
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