Load elevator

Details Load elevator Load elevator

1987-03-05

1988-08-16

Paperner, Leslie J.

Material or article handling

With weighing

211 593, 267166, 312 71, 414118, 414786, A47F 100

Patent

active

047640758

ABSTRACT:
A load elevator for pallets comprising a load supporting platform connected to a base frame through scissor linkages, a pair of compression springs interposed between the platform and the base frame, the capacity of said springs being selected according to the formula: ##EQU1## wherein C is the spring capacity in kilograms, W is the weight of the load in kilograms and H is the height of the load in millimeters, such that when a predetermined load W is supported by the platform, the springs will be substantially fully compressed and will operate to automatically elevate the platform as part of the load is removed from the platform whereby the top portion of the load remains at substantially the same height.

REFERENCES:
patent: 1212341 (1917-01-01), Fowler
patent: 2806607 (1957-09-01), Korngold et al.
patent: 2980287 (1961-04-01), Fisher
patent: 3091503 (1963-05-01), Fisher
patent: 3659913 (1972-05-01), Waldron et al.
patent: 3694044 (1972-09-01), Cummings
patent: 3738722 (1973-06-01), Kooiman
patent: 4007925 (1977-02-01), DeRyke et al.

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