Device for raising objects above elevated work platforms

Details Device for raising objects above elevated work platforms Device for raising objects above elevated work platforms

1998-05-07

1999-08-31

Krizek, Janice L.

Material or article handling

Apparatus for moving material to a position in the erection...

Flat wall or ceiling member manipulating means

248410, E04G 2114

Patent

active

059444681

ABSTRACT:
Device for lifting objects such as building materials and supplies above the heads of workers on an elevated work station (scaffold or stepladder) has a clamp assembly for adjustably mounting the device on said work station, a vertical elongate tubular pipe carrying a horizontal load platform thereon, a pipe guide and a one-way pipe lock both secured to the clamp assembly and aligned with each other through which the elongate tubular pipe is pushed upwardly for the load platform to a desired height without slipping or downward motion until a manually operated lock release is pressed.

REFERENCES:
patent: 2832479 (1958-04-01), Ottoway
patent: 3065982 (1962-11-01), Dodd
patent: 3208555 (1965-09-01), Fry
patent: 4375934 (1983-03-01), Elliott
patent: 4560031 (1985-12-01), Dixon et al.
patent: 4928916 (1990-05-01), Molloy

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