Vertically displaceable platform

Details Vertically displaceable platform Vertically displaceable platform

1993-10-07

1995-01-03

Olszewski, Robert P.

Elevator, industrial lift truck, or stationary lift for vehicle

Having specific counterbalance means for load support

187206, 187406, 5 102, 5 11, B66B 1712

Patent

active

053777875

ABSTRACT:
A platform (1) comprising a fixed structure (2) and a plate (3) movable in translation comprising four corners (4). Each corner (4) of the plate is secured to a vertical translation structure (5) which ends in a counterweight (6). A fixed structure comprises three guideposts (7, 14, 21) which coact with three translation structures (5). A support arm (9) is disposed in the upper portion of the platform (1) which coacts with the fourth translation structure (5). In this way, a fourth guidepost is avoided, so that ready access is provided to the space below the plate. At the same time, the plate is supported at all four corners and so is securely arranged.

REFERENCES:
patent: 866695 (1907-09-01), Taussig
patent: 983957 (1911-02-01), Trantham
patent: 1057719 (1913-04-01), Farnsworth
patent: 1065740 (1913-06-01), Sorlien
patent: 1197035 (1916-09-01), Knudtson et al.
patent: 2632183 (1953-03-01), Patton et al.
patent: 3396822 (1968-08-01), Guilbert, Jr.
patent: 3565217 (1971-02-01), St. Louis
patent: 3706356 (1972-12-01), Herbst et al.
patent: 3934496 (1976-01-01), Turko
patent: 4715574 (1987-12-01), Holt et al.

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