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US 4,452,275 AGranted
Safety device for an accumulator
OwnerNobuyuki Sugimurainventor
Life of this patent
Estimating the term…
Abstract
A flanged cylindrical valve casing is loosely inserted into a bore of a pressure container from its inside towards its outside. A fuse packing is interposed between the flange and the inside surface of the pressure container so that when this fuse packing has molten the flange may make direct contact with the pressure container, to form a passageway between the flange and the pressure container communicating with the inside of the pressure container, and this passageway communicates with a gap clearance around the cylindrical valve casing as well as the outside of the pressure container.
Claims7
A safety device for an accumulator, comprising:
- a pressure container (1) having a bore (2);
- a valve casing (3) having a flange (3b), said casing (3) being inserted into the bore (2) in the pressure container (1) from the inside of the container (1) toward its outside to form a gap clearance (4) between a wall (2a) of said bore (2) and a peripheral wall (3a) of the valve casing (3);
- a fuse packing interposed between the inside surface (1a) of said pressure container (1) and the flange (3b);
- a fastening nut (6) threadedly mated with the valve casing (3) and engaging the outside of the container (1) around the bore to secure the fuse packing between the container (1) and the flange (3b);
- wherein melting of the packing disengages the nut (6) from the outside of the container (1) and brings the inside surface (1a) of said pressure container (1) into direct contact with the flange (3b) with a passageway (4a) formed therebetween to communicate said gap clearance (4) with the inside (1a) of the pressure container (1).
2 more elements
Dependencies are inferred from the claim text.