Telescopic boom with sections of beam and truss construction

Details Telescopic boom with sections of beam and truss construction Telescopic boom with sections of beam and truss construction

1976-04-26

1977-09-06

Perham, Alfred C.

Static structures (e.g., buildings)

Shaft or openwork, axially extensible

52118, 214141, 308 3R, B66F 908, F16C 2304

Patent

active

040459365

ABSTRACT:
A multi-section telescopic boom has sections with reinforced I-beam side walls and top and bottom walls made up of truss members. The trusses and beam stiffeners are disposed interiorly of the beam flanges so that the flanges provide continuous upper, lower and side bearing surfaces engageable with wear pads all of which are on the next outermost section. The lower and side wear pads are elastomer backed and the side pads have backup buttons that can easily be shimmed out to compensate for wear.

REFERENCES:
patent: 2726743 (1955-12-01), Short et al.
patent: 2888300 (1959-05-01), Curtis et al.
patent: 3377638 (1968-04-01), Seipos
patent: 3537762 (1970-11-01), Lodige
patent: 3748807 (1973-07-01), Sterner
patent: 3837502 (1974-09-01), Hornagold

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