Telescopic mast

Details Telescopic mast Telescopic mast

1980-01-29

1982-11-09

Faw, Jr., Price C.

Static structures (e.g., buildings)

Shaft or openwork, axially extensible

52118, E04G 2500

Patent

active

043577857

ABSTRACT:
Pipes for a telescopic mast have at least three guide grooves along their entire length, this is with the exception of the inner pipe having the smallest cross-sectional area which may not have guide grooves. All pipes except the pipe intended to be the outermost one in the telescopic mast have guide blocks attached to the lowermost portion of their outside. All pipes (4) except the pipe (4) intended to be the innermost one in the telescopic mast have guide blocks attached to the uppermost portion of their inside.

REFERENCES:
patent: 2339327 (1944-01-01), Fox
patent: 2920725 (1960-11-01), Emmons
patent: 3495370 (1970-02-01), Habro
patent: 3624979 (1969-08-01), Przybylski
patent: 3796016 (1974-03-01), Wu
patent: 3802136 (1974-04-01), Eiler
patent: 4062156 (1977-12-01), Roth

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