Tripod stepladder

Details Tripod stepladder Tripod stepladder

1979-09-28

1981-02-10

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Ladder with pivoted prop

Rear prop, laterally moving

E06C 120

Patent

active

042496373

ABSTRACT:
A tripod stepladder includes rigid stiles having steps and a platform secured thereto. A hinge plate is pivoted to the platform and to a pair of legs to permit the legs to pivot as a unit towards and away from the stiles. The legs pivot relative to the hinge plate towards and away from each other to an unfolded tripod configuration. An A-shaped linkage limits pivoting movement and stabilizes the legs in the extended position.

REFERENCES:
patent: 42565 (1864-05-01), Curtiss
patent: 848513 (1907-03-01), Trafton
patent: 1778898 (1930-10-01), Konisberg
patent: 1783616 (1930-12-01), Hachmuth
patent: 2184486 (1939-12-01), Chew

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