Telescopic apparatus

Details Telescopic apparatus Telescopic apparatus

1977-10-27

1979-01-02

Bell, J. Karl

Static structures (e.g., buildings)

Mechanism operated relatively movable shaft assembly

Tilts relative to base

E04H 1234

Patent

active

041320417

ABSTRACT:
A telescopic boom assembly including first and second telescoping members. The assembly employs rack and pinion telescoping mechanisms which are driven by hydraulically controlled piston and cylinder members. The combination provides positive and precise positioning of the telescoping members and extremely smooth movement thereof.

REFERENCES:
patent: 336414 (1886-02-01), Kerr
patent: 3722154 (1973-03-01), Sakamoto

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