Back to results
US 4,901,978 AGranted
Flow control valve
AssigneeLaminar Fluid Controls, Inc.
InventorEugene P. Feild
Life of this patent
Estimating the term…
Abstract
A pair of opposed valve members defines a radial flow path therebetween which extends from the outer radial peripheries of each valve member to an axial bore formed in one of the valve members. The other valve member is mounted on a stem having an upper end which is urged upwardly by a spring disposed around the stem. A substantially cylindrical element is threadably engaged in the upper end of a valve body in which the valve members are received and the stem is urged thereagainst. In another embodiment, the stem is fixedly connected to the cylindrical element. Rotational movement of the cylindrical element axially moves the stem thereby controlling flow through the valve.
Claims37
A flow control valve comprising:
- a housing;
- a first valve member mounted on said housing and having a working face formed thereon;
- a bore formed in said housing, said bore being in communication with said first valve member working face;
- a second valve member received in said bore and having a first side directed toward said first valve member and a second side opposite thereto, said first side having a working face formed thereon;
- a shaft substantially coaxially received in said bore, said shaft being connected to said second side of said second valve member;
- inlet means formed in said housing for permitting a flow of fluid to fluid to a location adjacent the outer peripheries of said working faces;
- one of said valve members having an orifice extending thereinto from its working face, said faces being engageable with each other near the orifice to prevent fluid flow through the orifice;
- outlet means coupled with said housing for permitting a flow of fluid out of said orifice;
- means for substantially balancing the upward and downward pressures applied to said shaft when said valve is in operative condition;
- and
- means for sealing between the radially outer surface of said shaft and the radially inner surface of said bore, said sealing means comprising a substantially planar disk coaxial with said bore and having a central bore therethrough for receiving said shaft.
8 more elements
A flow control valve comprising:
- a housing;
- a first valve member mounted on said housing and having a working face formed thereon;
- a bore formed in said housing, said bore being in communication with said first valve member working face;
- a second valve member received in said bore and having a first side directed toward said first valve member and a second side opposite thereto, said first side having a working face formed thereon;
- a shaft substantially coaxially received in said bore, said shaft being connected to said second side of said second valve member;
- inlet means formed in said housing for permitting a flow of fluid to a location adjacent the outer peripheries of said working faces;
- one of said valve members having an orifice extending thereinto from its working face, said faces being engageable with each other near the orifice to prevent fluid flow through the orifice;
- outlet means coupled with said housing for permitting a flow of fluid out of said orifice;
- means for substantially balancing the upward and downward pressure applied to said shaft said valve is in operative condition;
- and
- guide means disposed between said shaft and said bore.
8 more elements
A flow control valve comprising:
- an upright housing;
- a vertical bore formed therein;
- a first valve member mounted on the lower end of said housing, said first valve member having an upwardly directed working face in fluid communication with said vertical bore and an outlet orifice which extends into said first valve member from its working face;
- a shaft mounted on said housing for movement in said bore along the axis thereof;
- a second valve member mounted on the lower end of said shaft, said second valve member having a working face thereon which is directed toward said first valve member working face, said faces being engageable with one another near said outlet orifice to prevent fluid flow through the orifice;
- inlet means formed on one side of said housing for permitting a flow of fluid into said vertical bore adjacent the outer peripheries of said working faces;
- and
- means for substantially balancing the upward and downward faces applied to said shaft when said valve in operative condition, said balancing means comprising a nonlinear spring.
5 more elements
The apparatus of claim 16 wherein said balancing means maintains at least some upward force applied to said shaft under all conditions.
A flow control valve comprising:
- a housing;
- a first valve member mounted on said housing and having a working face formed thereon;
- a bore formed in said housing, said bore being in communication with said first valve member working face;
- a second valve member received in said bore and having a first side directed toward said first valve member and second side opposite thereto, said first side having a working face formed thereon;
- a shaft substantially coaxially received in said bore, said shaft being connected to said second side of said second valve member;
- inlet means formed in said housing for permitting a flow of fluid to a location adjacent the outer peripheries of said working faces;
- one of said valve members having an orifice extending thereinto from its working face, said faces being engageable with each other near the orifice to prevent fluid flow through the orifice;
- outlet means coupled with said housing for permitting a flow of fluid out of said orifice;
- and
- means for substantially balancing the upward and downward pressure applied to said shaft when said valve is in operative condition, including means for biasing said second valve member away from said first valve member.
7 more elements
A flow control valve comprising:
- a housing;
- a first valve member mounted on said housing and having a working face formed thereon;
- a bore formed in said housing, said bore being in communication with said first valve member working face;
- a second valve member received in said bore and having a first side directed toward said first valve member and a second side opposite thereto, said first side having a working face formed thereon;
- a shaft substantially coaxially received in said bore, said shaft being connected to said second side of said second valve member;
- inlet means formed in said housing for permitting a flow of fluid to a location adjacent the outer peripheries of said working faces;
- one of said valve members having an orifice extending thereinto from its working face, said faces being engageable with each other near the orifice to prevent fluid flow through the orifice;
- outlet means coupled with said housing for permitting a flow of fluid out of said orifice;
- and
- means for substantially balancing the upward and downward pressures applied to said shaft when said valve is in operative condition;
- and
- means for moving said shaft along its axis, including a substantially cylindrical element threadably engage in said bore adjacent the end of said shaft opposite said second valve member, said shaft being fixedly attached to said cylindrical element.
9 more elements
Dependencies are inferred from the claim text.