Traversing hoists – Overhead – Cable
Patent
1975-11-07
1977-09-27
Makay, Albert J.
Traversing hoists
Overhead
Cable
137615, 141387, 212 54, B67D 504, F16L 2700
Patent
active
040505855
ABSTRACT:
A loading arm for transferring petroleum products at sea between two floating vessels. The loading arm structure includes a rotatably supported column having a boom hingedly supported at the upper end of the column for rotation about a first horizontal axis. An outer arm is hingedly connected at one end to the outer end of the boom for rotation about a second horizontal axis. A hydraulic/pneumatic spring includes a hydraulic cylinder connected between the column and the boom, the hydraulic fluid in the cylinder being pressurized from a large volume of gas for counterbalancing the weight of the boom and the arm. A second hydraulic/pneumatic spring is coupled between the column and a lever arm rotatable about the first horizontal axis. Linkage means couples the lever arm to the outer arm for maintaining the lever arm and outer arm in fixed angular relationship relative to each other as they rotate. The gas pressure in the hydraulic/pneumatic springs is adjustable to accommodate changes in load.
REFERENCES:
patent: 3340907 (1967-09-01), Bily
patent: 3455333 (1969-07-01), Bily
patent: 3651832 (1972-03-01), Meyer
patent: 3790002 (1974-02-01), Germond et al.
patent: 3889728 (1975-06-01), Riche
patent: 3938793 (1976-02-01), Kaptanis et al.
Ameron Inc.
Makay Albert J.
Rowold Carl
LandOfFree
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