Fire escape – ladder – or scaffold – Unitary foldable – rigid scaffold or ladder – Trestle
Patent
1998-11-09
2000-11-07
Stodola, Daniel P.
Fire escape, ladder, or scaffold
Unitary foldable, rigid scaffold or ladder
Trestle
182225, E04G 134, E04G 132
Patent
active
061422568
ABSTRACT:
A folding sawhorse is formed from a pair of substantially identical rectangular frames. The frames are constructed from four substantially identical wooden members via lap joints to make a smooth construction. The frames are also pivotally joined together by a pair of hinges fixedly coupled to top portions thereof. A flexible member or chain extends between the frames, but is displaced from the hinges. The hinges allow for pivotal movement of the frames, while the chain limits the range of pivotal movement.
REFERENCES:
patent: 1819252 (1931-08-01), Linsner
patent: 3148746 (1964-09-01), Juculano
patent: 4245718 (1981-01-01), Poston et al.
patent: 4756385 (1988-07-01), Deitz et al.
Dirk, II Henry E.
Stodola Daniel P.
Thompson Hugh B.
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