Easy erecting telescopic mast

Details Easy erecting telescopic mast Easy erecting telescopic mast

1988-05-02

1989-11-28

Basinger, Sherman D.

Traversing hoists

Having means facilitating assembly or disassembly

Of traversing hoist from support

212267, B66C 2306

Patent

active

048831867

ABSTRACT:
A system for the raising and lowering of telescopic masts which operates in one of two general ways, the first way of which includes an attached jack which pulls rather than pushes to effect erection of the mast and the second way where an external turning motion is translated into an internal turning motion which causes the telescopic mast sections to be pushed from the bottom to effect erection of the mast.

REFERENCES:
patent: 3817397 (1974-06-01), Neuman
patent: 4169338 (1979-10-01), Eik
patent: 4298128 (1981-11-01), Gattu
patent: 4309854 (1982-01-01), Vendramini
patent: 4327533 (1982-05-01), Sterner
patent: 4575976 (1986-03-01), McDermott
patent: 4690290 (1987-09-01), Gustafsson

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