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US 5,144,906 AGranted
Sea marker
AssigneePiepenbrock Pyrotechnik GmbH
InventorDaniel Kraemer
Life of this patent
Estimating the term…
Abstract
A sea marker for emergency flights of ship-based planes onto a ship is disclosed which comprises a float, a tube containing a pyrotechnical charge and also a percussion igniter. The tube consists of a material which does not burn away, and is provided with a light charge consisting of about 30 to 60% by weight of sodium nitrate, about 3 to 18% by weight of polyolefin resin and about 30 to 60% by weight of magnesium.
Claims16
A sea marker for emergency flights of ship-based planes onto a ship, comprising:
- a float,
- a tube supported by said float and containing a pyrotechnical charge,
- an intermediate charge superimposed on said pyrotechnical charge,
- a primer arranged on said intermediate charge, said primer being cast on to a holed disc which is held against an inner wall of the tube with a retaining ring, and
- a percussion igniter, wherein the tube comprises a material which does not burn and said charge consists essentially of about 30 to 60% by weight of sodium nitrate, about 3 to 18% by weight of polyolefin resin and about 30 to 60% by weight of magnesium.
2 more elements
A sea marker for emergency flights of ship-based planes onto a ship, comprising:
- a float,
- a tube supported by said float and containing a pyrotechnical charge,
- an intermediate charge superimposed on said pyrotechnical charge,
- a primer arranged on said intermediate charge, and
- a percussion igniter, wherein the tube comprises a material which does not burn and said charge consists essentially of about 30 to 60% by weight of sodium nitrate, about 3 to 18% by weight of polyolefin resin and about 30 to 60% by weight of magnesium wherein the intermediate charge and the pyrotechnical charge are each compacted with about 1 to 8% by weight of a binding agent and an inner wall of the tube is provided with an adhesive coating of vinyl acetate containing about 1 to 5% by weight of a phthalic acid ester.
2 more elements
Dependencies are inferred from the claim text.