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US 3,942,690 AGranted
Sliding gate with spring biased bolts for sealing
AssigneeUnited States Steel Corporation
InventorLeo Lohrer
Life of this patent
Estimating the term…
Abstract
Disclosed is a slidable gate for controlling flow of liquid metal from a bottom pour vessel. The gate is springpressed against a top plate. The springs engage bolts, the heads of which have a large number of small projections contacting the underside of the gate, whereby less heat is transmitted from the gate to the bolts and springs, and their useful life is prolonged.
Claims6
In a slider valve for a vessel, which valve comprises:
- a replaceable fixed ceramic head plate;
- a metal frame in which said head plate is mounted;
- a replaceable ceramic slidable plate beneath said head plate;
- a slidable frame in which said slidable plate is mounted;
- operating means connected with said slidable frame;
- and
- a plurality of spring-loaded bolts carried by said frame and having heads;
- the improvement in which the outer faces of the bolt heads carry a large number of projections which have crests located in a common plane transversely of the vessel;
- said projections bearing against the underside of said slidable plate, whereby said bolts urge said slidable plate against said head plate.
6 more elements
Dependencies are inferred from the claim text.