Load transfer

Details Load transfer Load transfer

1977-02-25

1978-10-03

Blix, Trygve M.

Implements or apparatus for applying pushing or pulling force

Step-by-step traveling bar

Pawl actuated

214 13, 212 3R, B66D 148

Patent

active

041180127

ABSTRACT:
Control of vertical motion of a suspended crane hook assembly to accommodate vertical motion between a station carrying the crane and a station carrying a load is achieved by a transducer on the hook assembly and a control cord depending onto the load station. Tension above a set value in the cord produced by a crew member on the station causes the hook assembly to descend and below the set value causes it to rise. Movement of the stations causes a continuous adjustment of tension and the hook assembly follows the motion, extra tension being applied to guide the hook assembly down to the load and vice versa.

REFERENCES:
patent: 1999936 (1935-04-01), Lange
patent: 2814032 (1957-11-01), Agnew et al.
patent: 3189195 (1965-06-01), Fox, Jr. et al.
patent: 3189196 (1965-06-01), Carl et al.
patent: 3282568 (1966-11-01), Shuster
patent: 3365075 (1968-01-01), Van Gils et al.
patent: 3512657 (1970-05-01), Chambers

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