Fire escape – ladder – or scaffold – Unitary foldable – rigid scaffold or ladder – Trestle
Patent
1988-04-22
1989-06-06
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Unitary foldable, rigid scaffold or ladder
Trestle
182225, B27B 2100, B25H 106
Patent
active
048363324
ABSTRACT:
An improved sawhorse has a horizontal central member supported at each end thereof by a special support assembly. Each of the support assemblies have a hinge formed at an upper end thereof by which it is hinged to the marginal end of the horizontal member. Each support assembly is foldable towards one another from a rigid, load bearing configuration into a storage configuration to present a small compact package for storage. Each of the support assemblies comprises a bracket at the upper end thereof which is attached to opposed marginal ends of the horizontal member; and an extension member is pivotally attached to the bracket. A latch device is included for latching and unlatching the extension member to the bracket. The support assembly terminates in a base at the lower end thereof, and includes a pair of diverging legs. A novel toggle assembly locks the pivotally attached legs to the lower end of the extension member, so that the legs can be pivoted into a retracted position whereby they are folded toward the bracket and into parallel relationship respective to one another and to the extension member.
REFERENCES:
patent: 1261007 (1918-04-01), Beardsley
patent: 1486169 (1924-03-01), Trautschold
patent: 1798548 (1931-03-01), McCurdy
patent: 2410330 (1946-10-01), Ashenfelter
patent: 3601224 (1961-12-01), Barras
patent: 3738451 (1973-06-01), Kirkpatrick
patent: 4183317 (1980-01-01), Follick
Bates Marcus L.
Machado Reinaldo P.
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