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US 5,667,198 AGranted
Gate valve for controlling the flow of viscous liquids
AssigneeL. A. Dreyfus Co.
InventorsAlexander Robert Sawicki, Edward R. Webb
Life of this patent
Estimating the term…
Abstract
A pivoting gate valve assembly includes a seat plate with an orifice therethrough, a stop plate and a gate. The stop plate is mounted on the seat plate and borders a portion of the orifice. The gate is pivotably mounted to the seat plate and pivots to a closed position against the stop plate and covering the orifice. The gate and the stop plate form a substantially flush contiguous surface when in the closed position.
Claims10
A pivoting gate valve comprising:
- a seat plate having an orifice therethrough;
- a stop plate mounted on the seat plate, the stop plate having a bottom surface, a top surface and a seal edge that is substantially aligned with a portion of the seat plate orifice, the seal edge having a bevel;
- and
- a valve gate pivotably mounted to said seat plate, said valve gate having a distal handle, a top surface, a bottom surface, and a seal edge between the top surface and bottom surface, the seal edge has a shape that substantially corresponds to the seal edge of the stop plate with the valve gate seal edge having a bevel that complements the stop plate seal edge so as to mate therewith when the valve is in a closed position, the top surface is substantially parallel and adjacent to the seat plate, the bottom surface of the valve gate and the bottom surface of the stop plate form a substantially flush contiguous surface when the valve is in a closed position.
1 more element
Dependencies are inferred from the claim text.