Static structures (e.g. – buildings) – Mechanism operated relatively movable shaft assembly – Tilts relative to base
Patent
1986-10-16
1988-06-07
Scherbel, David A.
Static structures (e.g., buildings)
Mechanism operated relatively movable shaft assembly
Tilts relative to base
52632, 212269, E04H 1218, B66C 2300
Patent
active
047487798
ABSTRACT:
A telescopic arm for use in civil engineering machines, in which guide rails extended axially are disposed while being protruded outwardly on both lateral sides of a base arm which is pivoted to the boom of a civil engineering machine main body, guide grooves each concaved inwardly in a U-cross sectional shape are formed axially on both lateral sides of the slide arm which moves along the axial direction of the base arm, slide blocks disposed on both lateral sides at the forward end of the base arm are in a slidable fitting engagement into the guide grooves of the slide arm, while slide blocks of a U-cross sectioned concaved shaped disposed on both lateral sides at the rearward end of the slide arm are in a slidable fitting engagement with the rails of the base arm.
REFERENCES:
patent: 2993570 (1961-07-01), Bender
patent: 3874136 (1975-04-01), Michel
patent: 4036372 (1977-07-01), Rao et al.
patent: 4045936 (1977-09-01), Sterner
patent: 4100707 (1978-07-01), Kranefeld et al.
patent: 4168008 (1979-09-01), Granryd
patent: 4272932 (1981-06-01), Wappler
patent: 4699562 (1987-10-01), Crook et al.
Product Brochure Cover, Yutani-Kobelco Slide Arm Drawing.
Dennison Caroline D.
Scherbel David A.
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