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US 4,901,754 AGranted
Valve improvements
AssigneeAnthony Industries, Inc.
InventorsChester A. Sable, Lawrence V. Maldarelli, Henry Church, Roy Graboff
Life of this patent
Estimating the term…
Abstract
Valve assemblies having a valve seat with a conical surface for causing an included O-ring to roll upon and wedge against the conical surface for closing the port when a spherical valve member is forced against the O-ring.
Claims9
In a valve body having a passageway including a port, a valve seat for a valve member having a spherical surface, the valve seat comprising in combination:
- an annular channel in the valve body and about the port, said annular channel including an inclined wall describing a conical surface having a diameter decreasing toward the passageway, said inclined wall terminating at a channel wall adjacent said inclined wall;
- and
- an O-ring having an inside diameter smaller than the diameter of the valve member spherical surface, said O-ring situated in said annular channel and in contact with said inclined wall such that said O-ring may roll upon and wedge against said inclined wall when the valve member spherical surface is forced against said O-ring toward the passageway and wherein said O-ring stops rolling before contacting said channel wall adjacent said inclined wall for providing a seal between said valve seat and said valve member.
A valve comprising in combination:
- a valve body having a passageway and including a port;
- a valve member having a spherical surface;
- an annular channel in said valve body and about said port, said annular channel including an inclined wall describing a conical surface having a diameter decreasing toward said passageway, said inclined wall terminating at a channel wall adjacent said inclined wall;
- an O-ring having an inside diameter smaller than the diameter of the spherical surface of said valve member, said O-ring being in contact with said inclined wall for sealing said port when said spherical surface of said valve member is forced against said O-ring wherein said O-ring is caused to roll upon and wedge against said inclined wall without contacting said adjacent wall;
- and
- support means for supporting said valve member when said spherical surface of said valve member is not in contact with said O-ring.
3 more elements
Dependencies are inferred from the claim text.