Induced nuclear reactions: processes – systems – and elements – Seal arrangements – For nozzle
Patent
1992-03-12
1993-10-19
Wasil, Daniel D.
Induced nuclear reactions: processes, systems, and elements
Seal arrangements
For nozzle
138 89, G21C 13028
Patent
active
052552942
ABSTRACT:
A sealing device for cylindrical hollow bodies of a small diameter has a cylindrical sealing insert with two coaxially arranged, axially displaceable members and an elastic sealing ring disposed between the two members. A displacement of the two coaxial members towards one another results in an enlargement of an outer diameter of the sealing ring and contact pressure between the outer circumference of the sealing ring and the inner wall surface of the hollow body. A remote-controlled placing tool is connectable to the sealing insert for clamping and locking the sealing insert in a sealing position and for releasing the sealing insert therefrom. The tool has a clamping cylinder with a clamping piston and a clamping piston rod in the form of a hollow cylinder connected to the clamping piston. A clamping anchor is connected to the first coaxial member and a sleeve is connected coaxially and axially slidable about the anchor. The tool is further provided with a release cylinder with a release piston. The sleeve is actuatable by the release piston when the tool is connected to the sealing insert. A supporting body connected to the release piston has radially pivotable release hooks that engage a flange of the sleeve for axially sliding the sleeve. The tool has radially pivotable pawls that are connected to the clamping piston rod for engaging a head of the anchor and an axially slidable control slide for pivoting the release hooks and the pawls.
REFERENCES:
patent: 4262702 (1981-04-01), Streich
patent: 4769207 (1988-09-01), Weber et al.
Thyssen Industrie AG
Wasil Daniel D.
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