Poppet valve assembly with straight-through flow

Claim 2

A straight-through flow valve including a housing enclosing a cylindrical valve chamber and cylindrical guiding surfaces, inlet and outlet passages on opposite sides of the valve chamber and in axial alignment with one another, a valve assembly in the chamber between the inlet and outlet passages, said valve assembly including a carrier, part of which is movable in the cylindrical guiding surfaces in the housing between open and closed positions along the axis of the cylindrical guide surfaces and transverse of the axis of alignment of the inlet and outlet passages, and said carrier having a passage therethrough in axial alignment with the inlet and outlet passages when the carrier is in open position, the carrier having a channel with a flat bottom surface on one side extending lengthwise thereof and confronting the cylindrical surface of the valve chamber, a fitting through which at least one of the passages extends, said fitting extending from said cylindrical surface into the channel toward said flat surface and terminating adjacent to said flat surface, and a poppet valve on the carrier movable relative to the carrier in directions substantially normal to the direction of movement of the carrier in the chamber, a seat on said fitting and surrounding at least one of said passages at an end of the passage confronting the valve assembly, the poppet valve being in alignment with said seat when the valve assembly is in closed position, and means for moving the poppet valve toward and from said seat.

Claim 3

The valve described in claim 1 characterized by the passage through the carrier being unobstructed and of the same cross-section as the inlet and outlet passages.

Claim 4

The valve described in claim 1 characterized by the passage through the carrier constituting a continuation of the inlet and outlet passages when in alignment therewith.

Claim 5

A straight-through flow valve includinG a housing enclosing a valve chamber and having cylindrical guiding surfaces, inlet and outlet passages on opposite sides of the valve chamber and in axial alignment with one another, a valve assembly in the chamber between the inlet and outlet passages, said valve assembly being movable in the cylindrical guiding surfaces of the chamber between open and closed positions along the axis of the cylindrical guide surfaces and transverse of the axis of alignment of the inlet and outlet passages, and said valve assembly including a carrier with a passage therethrough in axial alignment with the inlet and outlet passages when the carrier is in open position, and a poppet valve on the carrier movable relative to the carrier in directions substantially normal to the direction of movement of the carrier in the chamber, a seat surrounding at least one of said passages at an end of the passage confronting the valve assembly, the poppet valve being in alignment with said seat when the valve assembly is in closed position, and means for moving the poppet valve toward and from said seat, characterized by the carrier being movable with a straight line stroke and with said open and closed positions at different ends of the stroke, said carrier including an element having channels in opposite sides thereof, fittings through which the inlet and outlet passages extend, each of said fittings extending into a different one of the channels, and the passage through the carrier opening at opposite ends into said channels.

Claim 6

A straight-through flow valve includinG a housing enclosing a valve chamber and having cylindrical guiding surfaces, inlet and outlet passages on opposite sides of the valve chamber and in axial alignment with one another, a valve assembly in the chamber between the inlet and outlet passages, said valve assembly being movable in the cylindrical guiding surfaces of the chamber between open and closed positions along the axis of the cylindrical guide surfaces and transverse of the axis of alignment of the inlet and outlet passages, and said valve assembly including a carrier with a passage therethrough in axial alignment with the inlet and outlet passages when the carrier is in open position, and a poppet valve on the carrier movable relative to the carrier in directions substantially normal to the direction of movement of the carrier in the chamber, a seat surrounding at least one of said passages at an end of the passage confronting the valve assembly, the poppet valve being in alignment with said seat when the valve assembly is in closed position, and means for moving the poppet valve toward and from said seat, characterized by the carrier being movable with a straight line stroke and with said open and closed positions at different ends of the stroke, said carrier including an element having channels in opposite sides thereof, fittings through which the inlet and outlet passages extend, each of said fittings extending into a different one of the channels, and the passage through the carrier opening at opposite ends into said channels.

Claim 7

The valve described in claim 4 characterized by one of the fittings that extend into the channels serving as a key to prevent rotation of the carrier in the valve chamber, and means for adjusting the extent to which each of the fittings extend into its associated channel.

Claim 8

The valve described in claim 1 characterized by cylinder-and-piston motor means operatively connected with the carrier and with the poppet valve for moving the carrier between open and closed positions and for moving the poppet valve as a shut-off valve for controlling flow from the inlet passage when the carrier is in closed position.

Claim 9

The valve described in claim 6 characterized by the carrier being movable through a straight line stroke between open and closed positions, the cylinder-and-piston motor means including a cylinder in the housing and a piston in the cylinder operably connected with both the carrier and the poppet valve for moving the carrier through said stroke and for moving the poppet valve into position to shut off flow from the inlet passage when the carrier is at the closed position end of its stroke.

Claim 10

The valve described in claim 7 characterized by the fitting being in the inlet passage, a seat on the inner end of the inlet fitting and with which the poppet valve contacts, a linkage on the carrier in position to press the poppet valve against the seat in a direction in alignment with the inlet passage, the poppet valve and the seat having confronting surfaces, one of which is tapered, said linkage being movable into position to make the tapered surface clear the other confronting surface preparatory to movement of the poppet valve with the carrier in a direction transverse of the axis of the inlet and outlet passages, an actuator bar connecting the linkage with the piston, and a stop in position to prevent further movement of the linkage after the poppet valve has moved into position in which the tapered surface clears the surface which it confronts whereby further travel of the actuator bar moves the carrier toward open position.

Claim 11

The valve described in claim 8 characterized by the linkage that operates the poppet valve being a toggle with its mid-portion connected with the actuator bar by a pivot connection, one end of the toggle having a face contacting with a face within the poppet valve and the other end of the toggle having a face contacting a face of the carrier, the links of the toggle also having confronting faces thereof that contact with one another, and the piVot connection being loose enough for the confronting faces on the toggle links to bear against one another as the toggle moves toward a straight position to transmit pressure from the carrier face to the poppet valve through the contacting faces and independent of the pivot, said contacting faces including complementary concave and convex surfaces.

Claim 12

The valve described in claim 1 characterized by the carrier being a piston movable in the cylindrical guiding surfaces to shift the carrier along a straight line stroke between open and closed positions, abutment means that stop the carrier at each end of its stroke with the poppet valve in alignment with the inlet passage when the carrier is at one end of its stroke and with the passage through the carrier in alignment with the inlet passage when the carrier is at the other end of its stroke.

Claim 13

The valve described in claim 10 characterized by the valve chamber being a bore through the housing, and the abutment means being plugs closing opposite ends of the bore and threaded into the ends of the bore and adjustable along said threads to determine the stroke of the carrier and to align the poppet valve and the passages through the carrier with the inlet passage when the carrier is at opposite ends of its stroke.

Claim 14

The valve described in claim 10 characterized by partially chordal extending channels in opposite circumferential portions of the carrier at an intermediate portion of the carrier and extending axially for a distance as great as the stroke of the carrier plus the width of the inlet passage in the direction of movement of the carrier.

Claim 15

The valve described in claim 10 characterized by a cylinder-and-piston motor in the carrier and behind the poppet valve with a stroke in the direction of extent of the aligned inlet and outlet passages.

Claim 16

The valve described in claim 13 characterized by there being two concentric cylinder-and-piston motors in the carrier, means sealing the working fluid spaces on said cylinder-and-piston motors from one another, a passage through the poppet valve and into the cylinder of the first of said motors, the piston of the first motor being of larger cross-section than the effective surface of the poppet valve which is exposed to fluid pressure in the inlet passage for holding the poppet valve close against a flat end face of the inlet passage, which face surface has a seat for the poppet valve, and common means for supplying working fluid behind the carrier, to move the carrier into open position, and on the side of the piston of the second motor to move the poppet valve away from the end of the inlet passage.