Conveying device

Details Conveying device Conveying device

1985-06-28

1987-02-24

Reeves, Robert B.

Implements or apparatus for applying pushing or pulling force

Apparatus for hauling or hoisting load, including driven...

104156, 92 92, 92137, B66D 100, B61B 1312

Patent

active

046451820

ABSTRACT:
A conveying device more particularly suitable for use as a vertical hoist on construction sites or in industrial premises takes the form of a flexible and pliant hose-like pressure duct having a shuttle piston therein. The shuttle piston acts to seal off an internal portion of the duct and is fixed in place by way of a magnetic coupling with an external rider. The external rider is anchored in place so as to encompass the portion of the pliant duct in which the shuttle piston is located. The pliant duct is moved either up or down depending on whether fluid pressure is inserted into the duct above or below the fixed shuttle piston. By attaching a hook or the like to one end of the duct the pliant hose is capable of acting as a traction rope.

REFERENCES:
patent: 381907 (1888-05-01), Connolly
patent: 1719231 (1929-07-01), McLaren
patent: 3697071 (1972-10-01), Anderson
patent: 3760245 (1973-09-01), Halvorsen
patent: 3779401 (1973-12-01), Carroll
patent: 3882791 (1975-05-01), Youngscap
patent: 4305448 (1981-12-01), Stoll
patent: 4351229 (1982-09-01), Stoll
patent: 4457423 (1984-07-01), Stoll

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