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US 4,727,520 AGranted
Cable deployment unit
AssigneeSparton of Canada, Ltd.
InventorAtef R. Tadros
Life of this patent
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Abstract
In a system for deploying an immersible unit by a cable from a floating platform, the cable deploys freely from a cable deployment unit until a comparator unit, which provides for variable depth control, activates an anchoring unit. Activating the anchoring unit causes a jacket external to the cable to be tightened about the cable, thereby gradually braking the descent of the cable deployment unit from which the cable is payed out.
Claims5
Apparatus for deploying an immersible unit at some selected depth from a surface platform floating in a body of water, comprising:
- a cable deployment unit from which is payed out a cable, said immersible unit being secured to said cable deployment unit;
- an anchoring unit above said cable deployment unit and releasably secured to said cable deployment unit by a tie means;
- a cable engaging means for gradually tightening about said cable, extending between said cable deployment unit and said anchoring unit;
- means for actuating said anchoring unit at a predetermined depth, said predetermined depth being a function of said selected depth, wherein actuation of said anchoring unit causes said cable engaging means to engage said cable at said anchoring unit and said tie means to be severed, said anchoring unit increasing its distance from said cable deployment unit when said tie means is severed, thereby causing said cable engaging means to tighten with increasing frictional force about said cable along the length of said cable and said cable deployment unit to halt its descent at said selected depth for said immersible unit.
1 more element
Dependencies are inferred from the claim text.