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US 4,398,760 AGranted
Submersible net for helicopter rescue missions
OwnerVernon C. Kirkinventor
Life of this patent
Estimating the term…
Abstract
A rescue net characterized by a base ring, a rail ring, netting covering the base ring and extending between the base ring and rail ring, a hoist assembly, and a number of shroud lines coupling the rail ring to the hoist assembly. The base ring and the rail ring are provided with a number of holes so that they flood and sink upon contact with the water. This allows boating accident victims and the like to be scooped out of the water by lowering the net from a helicopter and dragging the net below the surface of the water towards the victim.
Claims11
A submersible rescue net comprising:
- a rigid, non-floatable tubular base ring provided with a plurality of apertures that allow a fluid in ingress and egress its interior;
- a rigid, non-floatable tubular rail ring provided with a plurality of apertures that allow a fluid to ingress and egress its interior;
- netting means extending across said base ring and between said base ring and said rail ring, whereby said netting forms a base and sidewalls when said rail ring is vertically separated from said base ring, and whereby the top of said rail ring is uncovered;
- a hoist means;
- and
- a plurality of shroud lines coupling said rail ring to said hoist means.
3 more elements
A submersible rescue net comprising:
- a tubular base ring assembly provided with a plurality of apertures that allow a fluid to ingress and egress its interior;
- said base ring assembly including a pair of semi-circular base ring portions removably attached together at their ends by a pair of base ring couplers;
- wherein each of said pair of base ring couplers includes a base ring attachment member having a first end section attached within an end of a first base ring portion, and means for removably attaching a second end section of said base ring attachment member within an end of a second base ring portion;
- a tubular rail ring assembly provided with a plurality of apertures that allow a fluid to ingress and egress its interior;
- wherein one of said base ring assembly and said rail ring assembly is of sufficiently greater diameter than the other so that one may nestle inside the other for storage;
- said rail ring assembly including a pair of semi-circular rail ring portion removably attached together at their ends by a pair of rail ring couplers;
- wherein each of said pair of rail ring couplers includes a rail ring attachment member having a first end section attached within an end of a first rail ring member, and means for removably attaching a second end section of said attachment member within an end of a second rail ring assembly portion;
- netting means extending across said base ring assembly and between said base ring assembly and said rail ring assembly, whereby said netting forms sidewalls and a base when said rail ring assembly is vertically separated from said base ring assembly, and whereby the top of said rail ring assembly is uncovered;
- a hoist means including a hoist ring adapted to removably attach to a hook of a helicopter winch assembly;
- and
- a plurality of shroud lines coupling said rail ring assembly to said hoist means and said base ring assembly.
8 more elements
Dependencies are inferred from the claim text.