Portable salvage lift

Details Portable salvage lift Portable salvage lift

1974-09-13

1976-03-02

Blix, Trygve M.

Ships

Building

Canal and ferry boats

9 9, 114 54, B63C 702, B63C 726

Patent

active

039408140

ABSTRACT:
A portable salvage lift apparatus for use in an underwater environment coising a buoyancy system having a variable lift capability and a tethering system employing a brake comprising a pump. This pump has a rotor coupled to a reel in the tethering system, an inlet to admit water to the pump and a restricted outlet to increase the resistance to water flow through the pump thus resisting rapid rotation of the reel, whereby the rate of ascent of the apparatus is controlled.

REFERENCES:
patent: 750322 (1904-01-01), Tribble
patent: 1249486 (1917-12-01), Polachek
patent: 3471877 (1969-10-01), Bayles
patent: 3631551 (1972-01-01), Miller
patent: 3667417 (1972-06-01), Clinkenbeard

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