Static structures (e.g. – buildings) – Mechanism operated relatively movable shaft assembly
Patent
1976-05-25
1977-07-19
Taylor, Dennis L.
Static structures (e.g., buildings)
Mechanism operated relatively movable shaft assembly
61 535, 52121, 173147, 173 44, 254148, E04H 1234
Patent
active
040359697
ABSTRACT:
Telescopic columns for making foundations including in reciprocal coordination and cooperation a motor group comprising at least two guide pulleys having a proportion to each other of one to two; inner and outer movable columns; axially immovable canoe guide means surrounding said columns; a chain secured to the two ends of the outer movable column and driven by the smaller of said pulleys; a chain secured to the lower part of the inner movable column and to the upper part of the axially immovable guide canoe means and driven by the larger pulley; a cable connecting the upper part of the inner movable column to the lower part of the axially immovable guide canoe means and a transmission sheave solidly fixed to the lower part of the outer movable column through which passes said cable.
REFERENCES:
patent: 2958514 (1960-11-01), Lee
patent: 3517760 (1970-06-01), Kehrberger
patent: 3520374 (1970-07-01), Ebert
patent: 3645343 (1972-02-01), Mays
patent: 3753468 (1973-08-01), Casagrande
patent: 3835936 (1974-09-01), Lagerstedt et al.
patent: 3845596 (1974-11-01), Veenstra
patent: 3917005 (1975-11-01), Cannon et al.
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