Ships – Mother ship – floating landing platform – and harbor
Patent
1976-01-21
1977-10-18
Blix, Trygve M.
Ships
Mother ship, floating landing platform, and harbor
182139, 214 12, 294 81SF, B63B 3552
Patent
active
040541037
ABSTRACT:
Precision hover is necessary when one must position a load precisely on the deck of a ship. Manual precision hover is possible under very light wind gust conditions and a calm sea. The techniques described here are directed to those special windy days when a mission must be accomplished. The technique is to unload a containerized cargo onto a platform kept level regardless of the rolling motions of the ship. The platform is a resilient net of the proper strength to absorb the cargo's impact upon its contact with the net. During night operations under adverse weather conditions it is desirable to remove the cargo from the hoisting mechanism manually unaided. This is accomplished by an automatic sling detachment device. Usually the container will approach the net at an angle. This is desirable, enabling one or two of the devices to detach themselves first and permitting the reduction in loading upon the helicopter to be less abrupt. As the load is lowered further all four devices will detach themselves automatically. The container may be moved elsewhere aboard the ship with the aid of a crane. If the container is not moved elsewhere, then it is placed over an inflated pad, having air relief valves, to absorb the load's impact. The pad remains until the ship's cargo is unloaded, when the pads are retrieved to be used again.
REFERENCES:
patent: 1267109 (1918-05-01), O'Laughlin
patent: 1558567 (1925-10-01), Schein
patent: 2160449 (1939-05-01), Weichardt et al.
patent: 2294509 (1942-09-01), Moeller
patent: 2807429 (1957-09-01), Hawkins, Jr. et al.
patent: 3487553 (1970-01-01), Stingl
Blix Trygve M.
Goldstein Stuart M.
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