Gate valve sealing structure
AssigneeAdaptor, Inc.
InventorMichael Gagas
Life of this patent
Estimating the term…
Abstract
An improved liquid infiltration adapting structure for preventing liquid infiltration around a gate valve box. The structure has an annular tube structure that is tapered to more easily receive a mating pipe. The tube structure may also comprise at least one bead for further securing the mating pipe. The adapting structure is also improved by providing a stepped inner flange for ease of installing the structure around the gate valve box.
Claims23
In a liquid infiltration adapting structure for adapting a pipe member to a valve assembly to thereby prevent liquid infiltration around said valve assembly, the liquid adapting structure comprising a generally annular tube structure having a top end and a bottom end and an inside surface and an outside surface, one of said inside and outside surfaces providing a mating surface for receiving said pipe member, the improvement being:
- said mating surface of said tube structure tapering evenly from said bottom end towards said top end of said tube structure.
In a liquid infiltration adapting structure for adapting a pipe member to a valve assembly to thereby prevent liquid infiltration around said valve assembly, the structure comprising a generally annular tube structure forming a throughbore, said tube structure having a top end and a bottom end and an inside surface and an outside surface, said bottom end including a flange extending relatively perpendicular from said bottom end, said flange comprising an inner periphery, the improvement being:
- said flange having at least an internal section extending inwardly from said inside surface of said annular tube structure to said inner periphery, said inwardly extending section having a first height where said flange intersects said annular structure, and a second height at said inner periphery of said flange, said second height being less than that of said first height.
A liquid infiltration adapting structure for adapting a pipe member to a valve assembly to thereby prevent liquid infiltration around said valve assembly, comprising:
- a generally annular tube structure having a top end and a bottom end and an inside surface and an outside surface;
- a first flange extending relatively perpendicular from annular tube structure;
- a second flange extending relatively perpendicular to said annular tube structure.
Dependencies are inferred from the claim text.