Fire escape – ladder – or scaffold – Unitary foldable – rigid scaffold or ladder – Trestle
Patent
1992-11-16
1994-10-04
Chin-Shue, Alvin C.
Fire escape, ladder, or scaffold
Unitary foldable, rigid scaffold or ladder
Trestle
182225, B27B 2100
Patent
active
053517857
ABSTRACT:
A folding sawhorse of the type comprising two trestle like frames that are hingedly connected at their tops. Wherein the improvement makes use of a pivoting shelf member for the purpose of controlling the open and close movements of these frames. The shelf is hingedly attached to a lower strut of one frame and slidably attached to the legs of the opposite frame. The slidable attachment is by means of pins that are secured to one end of the pivoting shelf and are also engaged in longitudinal slots that are in the legs of the opposite frame. To open the sawhorse from its closed, storage position, the frames are spread apart slightly, thereby allowing gravity to pull the shelf downward and concurrently causing the frames to spread outwardly to their open, working position. The sawhorse will stay in this locked open position without any additional latching mechanisms until the close procedure is initiated. To close the sawhorse for storage, a light upward pressure is applied on the edge of the pivoting shelf, causing it to move upwardly and concurrently causing the frames to pivot inwardly toward each other to their closed storage position. The improved folding sawhorse is further comprised of a removable, and replaceable top piece that is attached to only one of the frames and is also reversible from a tray top to a solid top, and overhangs the width of the frames thereby facilitating the clamping down of materials to the top piece.
REFERENCES:
patent: 604482 (1898-05-01), Seaman
patent: 3817349 (1974-06-01), Barthel
patent: 3857604 (1974-12-01), Scott
patent: 4113056 (1978-09-01), DeLorenzo
patent: 4124093 (1978-11-01), Breisch
patent: 4298186 (1981-11-01), Glass
patent: 4429765 (1984-02-01), Garcia
patent: 4494627 (1985-01-01), Arent
patent: 4620613 (1986-11-01), Albertson
patent: 4756385 (1988-07-01), Dietz et al.
patent: 4771863 (1988-09-01), Stansberry
patent: 4790411 (1988-12-01), Ottoson
Iron Horse By Hirsh.
Chin-Shue Alvin C.
Storehorse, Inc.
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