Drywall panel lifter

Details Drywall panel lifter Drywall panel lifter

2011-08-16

2011-08-16

Adams, Gregory W (Department: 3652)

Material or article handling

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

Flat wall or ceiling member manipulating means

C187S244000, C254S103000

Reexamination Certificate

active

07997846

ABSTRACT:
A drywall panel lifter having two stanchions into which jacks are vertically set, wherein each jack has an extending portion capable of rising past the tops of the first and second stanchion respectively; a set of bars hinged to the jacks; a cross-piece assembly connecting the bars, having a crank is operatively connected to the screw gear that operates the jacks; and panel holding grippers mounted on the extending portion of the jacks.

REFERENCES:
patent: 639328 (1899-12-01), Wilson
patent: 1263303 (1918-04-01), Wolf
patent: 1580348 (1926-04-01), Thatcher
patent: 3784160 (1974-01-01), Phillips
patent: 4842473 (1989-06-01), Zbornik

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