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US 4,281,686 AGranted
Three way butterfly valve
OwnerGordon R. Gerlitzinventor
Life of this patent
Estimating the term…
Abstract
A motor means controlled three way butterfly valve is disclosed for regulating the flow of liquids, as in internal combustion engine cooling system and passenger compartment heating and air conditioning systems. The valve plate includes two flat parallel surfaces which engage two corresponding flat parallel surfaces formed on the cylindrical passage in the valve body to reduce valve plate binding or sticking against the inner surface of the flow passage when the valve plate is rotated.
Claims25
A vacuum control valve assembly for regulating coolant flow in an automotive heating system comprising:
- a housing having an opening therethrough, at least a portion of said opening defining a cylindrical passage;
- a bypass passageway mounted to the side of said housing, one end of said passageway projecting into said opening in said housing;
- a pivot pin mounted diametrically through said housing across said cylindrical passage in spaced relationship to said bypass passage;
- a valve plate engaged to said pivot pin, said valve plate having a diametrically extending central flat planar portion which extends radially of said cylindrical passage when said valve plate is in inclined position with respect to the axis of said cylindrical passage and the periphery of said valve plate is in sealing engagement with the interior surface of said cylindrical passage whereby said valve plate stops the flow of fluid through said cylindrical passage and permits flow through said bypass passageway when said valve plate is in a first predetermined position and said valve plate restricts the flow of fluid through said bypass passageway and permits the flow of fluid through said cylindrical passage when said valve plate is in a second predetermined position;
- means for restricting the flow of fluid through said bypass passageway when said valve plate is in parallel position with respect to the axis of said cylindrical passage and in proximate contact with said bypass passageway;
- and
- means for piloting said valve plate in said cylindrical passage of said housing such that said planar portion of said valve plate positioned centrally of said cylindrical passage whereby said piloting means locates said flat portion relative to said pin before said valve plate is fastened to said pin.
4 more elements
A vacuum control valve assembly for regulating liquid flow in an automotive heating system comprising:
- a housing having an opening therethrough, at least a portion of said opening defining a cylindrical passage, said cylindrical passage having first and second flat parallel surfaces thereon;
- a bypass passageway mounted to the side of said housing, one end of said passageway projecting into said opening in said housing;
- a pivot pin mounted diametrically through said housing across said cylindrical passage in spaced relationship to said bypass passageway;
- a valve plate engaged to said pivot pin, said valve plate having first and second flat parallel surfaces on the periphery of said valve plate, said valve plate further having a diametrically extending central flat planar portion which extends through said first and second flat parallel surfaces in said valve plate and extends radially of said cylindrical passage when said valve plate is in inclined position with respect to the axis of said cylindrical passage and the periphery of said valve plate is in sealing engagement with the interior surface of said cylindrical passage whereby said valve plate stops the flow of fluid through said cylindrical passage and permits flow through said bypass passageway when said valve plate is in a first predetermined position and said valve plate restricts the flow of fluid through said bypass passageway and permits the flow of fluid through said cylindrical passage when said valve plate is in a second predetermined position;
- means for restricting the flow of fluid through said bypass passageway when said valve plate is in parallel position with respect to the axis of said cylindrical passage and in proximate contact with said bypass passageway;
- means for piloting said valve plate in said cylindrical passage of said housing.
3 more elements
A control valve assembly comprising:
- a housing having an opening therethrough, at least a portion of said opening defining a cylindrical passage;
- a bypass passageway mounted to the side of said housing, said passageway further having a projection which protrudes approximately midway into said cylindrical passage, said projection further having a face seat on its protruding end;
- a pivot pin mounted diametrically through said housing across said cylindrical passage in spaced relationship to said face seat on said projection;
- a metal valve plate engaged to said pivot pin, said valve plate having a diametrically extending central flat planar portion which extends radially of said cylindrical passage and perpendicular to the axis of said cylindrical passage when said valve plate is in inclined position with respect to the axis of said cylindrical passage whereby said valve plate stops the flow of fluid through said cylindrical passage and permits the flow of fluid through said bypass passageway when said valve plate is in a first predetermined position and said valve plate restricts the flow of fluid through said bypass passageway and permits the flow of fluid through said cylindrical passage when said valve plate is in the second predetermined position;
- said valve plate having at least the peripheral portion thereof formed with a resilient material that engages the interior surface of said cylindrical passage when said planar portion is perpendicular to the axis of said cylindrical passage and the general plane of the valve plate forms an acute angle with respect to the axis of said cylindrical passage;
- means for restricting the flow of fluid through said bypass passageway when said valve plate is in parallel position with respect to the axis of said cylindrical passage and in positional relationship to said face seat on said projection;
- a resilient orifice mounted in said cylindrical passage so that the fluid downstream of said valve plate is restricted at a predetermined pressure level;
- and
- means for piloting said planar portion of said valve plate centrally of said cylindrical passage so that said piloting means locates said flat portion of said valve plate relative to said pin before said valve plate is fastened to said pin.
6 more elements
A control valve assembly for regulating coolant flow in an automotive heating system comprising:
- a housing having a portion defining an opening therethrough, at least a portion of said opening defining a cylindrical passage;
- a bypass passageway mounted to the side of said housing, said bypass passageway having one end projecting into said opening in said housing;
- a pivot pin mounted diametrically through said cylindrical passage of said housing in spaced relationship to said bypass passageway;
- a valve plate centrally mounted to said pivot pin for rotation therewith;
- means for rotating said valve plate in said cylindrical passage from a first predetermined position, whereby the periphery of said valve plate contacts the interior surface of said cylindrical passage to restrict fluid flow therethrough and permits fluid flow through said bypass passageway, to a second predetermined position, whereby said valve plate contacts said one end of said bypass passageway so as to permit fluid flow through said cylindrical passage and restrict fluid flow through said bypass passageway;
- and
- means for piloting said valve plate in said cylindrical passage of said housing.
4 more elements
Dependencies are inferred from the claim text.