US3596876A — Disc valve with upstream and downstream seats

Claim 1

Independent Claim 451 words

A disc valve, comprising: a valve body having upstream and downstream end faces and a bore extending therethrough; a first valve stem journaled in the valve body and extending at a right angle to the axis of the bore through the valve body; an annular upstream seat, having a valve member end, a nonvalve member end, and inner and outer peripheries, being adapted to be inserted axially into the bore of the valve body and supported thereby, said upstream seat having a sealing surface formed around a portion of the inner periphery thereof upstream of the first valve stem, and an elastomeric aperture portion adjacent and intersecting the valve member end of the upstream seat, said aperture portion being sized and positioned to sealingly engage a portion of the first valve stem about a portion of the outer periphery thereof, an annular downstream seat, having a valve member end, a nonvalve member end, and inner and outer peripheries, being adapted to be inserted axially into the bore of the valve body and supported thereby, said downstream seat having a sealing surface formed around a portion of the inner periphery thereof downstream of the first valve stem, and an elastomeric aperture portion adjacent and intersecting the valve member end of the downstream seat, said last-mentioned aperture portion being sized and positioned to cooperate with the aperture portion of the upstream seat to encompass and sealingly engage a portion of the first valve stem about the outer periphery thereof, the downstream seat being sized to extend a distance into the bore of the valve body such that the valve member end thereof sealingly engages the valve member end of the upstream seat about the entire periphery thereof except where interrupted by the sealing engagement with the first valve stem; a rigid material disc valve member in the valve body connected to the first valve stem for turning movement of the disc valve member about a turning axis, between a closed position transverse to the axis of the bore through the valve body, and an open position in line with the bore through the valve body, the axial length of said disc valve member being less than the diameter thereof, said disc valve member having seating surfaces formed on the opposite ends thereof on opposite sides of the connection of the disc valve member to the first valve stem, arranged to cooperate with the upstream and downstream seats when the disc valve member is turned to a position transverse to the axis of the bore through the valve body, both of said seating surfaces being shaped to conform to portions of a sphere having its center in the center of the disc valve member.

Claim 2

Dependent Claim 451 words

A disc valve, comprising: a valve body having upstream and downstream end faces and a bore extending therethrough; a first valve stem journaled in the valve body and extending at a right angle to the axis of the bore through the valve body; an annular upstream seat, having a valve member end, a nonvalve member end, and inner and outer peripheries, being adapted to be inserted axially into the bore of the valve body and supported thereby, said upstream seat having a sealing surface formed around a portion of the inner periphery thereof upstream of the first valve stem, and an elastomeric aperture portion adjacent and intersecting the valve member end of the upstream seat, said aperture portion being sized and positioned to sealingly engage a portion of the first valve stem about a portion of the outer periphery thereof, an annular downstream seat, having a valve member end, a nonvalve member end, and inner and outer peripheries, being adapted to be inserted axially into the bore of the valve body and supported thereby, said downstream seat having a sealing surface formed around a portion of the inner periphery thereof downstream of the first valve stem, and an elastomeric aperture portion adjacent and intersecting the valve member end of the downstream seat, said last-mentioned aperture portion being sized and positioned to cooperate with the aperture portion of the upstream seat to encompass and sealingly engage a portion of the first valve stem about the outer periphery thereof, the downstream seat being sized to extend a distance into the bore of the valve body such that the valve member end thereof sealingly engages the valve member end of the upstream seat about the entire periphery thereof except where interrupted by the sealing engagement with the first valve stem; a rigid material disc valve member in the valve body connected to the first valve stem for turning movement of the disc valve member about a turning axis, between a closed position transverse to the axis of the bore through the valve body, and an open position in line with the bore through the valve body, the axial length of said disc valve member being less than the diameter thereof, said disc valve member having seating surfaces formed on the opposite ends thereof on opposite sides of the connection of the disc valve member to the first valve stem, arranged to cooperate with the upstream and downstream seats when the disc valve member is turned to a position transverse to the axis of the bore through the valve body, both of said seating surfaces being shaped to conform to portions of a sphere having its center in the center of the disc valve member.

Claim 3

Dependent Claim 86 words

The disc valve of claim 1 wherein the Valve body includes a pair of counterbores, one of the counterbores intersecting the upstream end face of the valve body and the other of said counterbores intersecting the downstream end face of the valve body; and wherein the disc valve is defined further to include an O-ring seal member disposed in each of said counterbores, each o-ring seal member being sized to sealingly engage the valve body and the outer periphery of the annular upstream or downstream seat.

Claim 4

Dependent Claim 21 words

The disc valve of claim 2 wherein the upstream seat and the downstream seat are each constructed of an elastomeric material.

Claim 5

Dependent Claim 30 words

The disc valve of claim 1 wherein the aperture portions of the upstream and downstream seats are sized on a smaller radius than the radius of the first valve stem.

Claim 6

Dependent Claim 38 words

The disc valve of claim 1 wherein the valve body includes a counterbore at each end of said bore, said counterbores being provided to receive a portion of the upstream and downstream seats, respectively, and to cooperate therewith.

Claim 7

Dependent Claim 118 words

The disc valve of claim 1 wherein the upstream and downstream seats are each defined further to include a relatively rigid seat ring having a valve member end, a nonvalve member end, an inner periphery, and an outer periphery, said outer periphery being sized to slidingly fit in the bore of the valve body; and an elastomeric seal member having a valve member end, a nonvalve member end, and an inner periphery and an outer periphery, said outer periphery being bonded to the inner periphery of said seat ring, said inner periphery having a sealing and seating surface formed about a portion thereof sized to seatingly and sealingly engage the adjacent seating surface of the disc valve member.

Claim 8

Dependent Claim 81 words

The disc valve of claim 6 wherein the valve member end of each elastomeric seal member is sized to extend axially beyond the adjacent valve member end of the respective seat ring, so that when the upstream and downstream seats are in an assembled position in the valve body, the valve member end of the elastomeric seal on the upstream seat sealingly engages the valve member end of the elastomeric seal on the downstream seat to provide a fluidtight seal therebetween.

Claim 9

Dependent Claim 85 words

The disc valve of claim 6 wherein the disc member includes an upper aperture extending through a portion thereof and intersecting the outer periphery thereof, said upper aperture having a noncircular shaped cross section; and wherein the first valve stem is defined further to include a lower portion extending a distance into the bore of the valve body, said lower portion having a noncircular shaped cross section sized to matingly fit the noncircular shaped cross section of the upper aperture, thereby providing the interconnection therebetween.

Claim 10

Dependent Claim 99 words

The disc valve of claim 8 wherein the disc member includes a lower aperture extending through a portion thereof and intersecting the outer periphery thereof, said lower aperture being radially aligned with said upper aperture; and wherein the disc valve is defined further to include a second valve stem having an upper and a lower portion, said second valve stem lower portion being secured in the valve body, and said second valve stem upper portion extending a distance into the bore in the valve body and being sized to journally extend into the lower aperture in the disc member.

Claim 11

Dependent Claim 96 words

The disc valve of claim 9 wherein the valve body includes a counterbore therein adjacent the intersection of the first valve stem with the bore in the valve body; and a counterbore therein adjacent the intersection of the second valve stem with the bore in the valve body; and wherein the disc valve is defined further to include an o-ring seal member disposed in each counterbore in the valve body, each of said o-ring seal members being sized to sealing engage the portion of the first of second valve stems, respectively, about the outer periphery thereof.

Claim 12

Dependent Claim 56 words

The disc valve member of claim 10 wherein each seat ring is sized such that a portion thereof generally adjacent the valve member end thereof engages each O-ring seal member and retains each o-ring seal member in the respective counterbore in the valve body and in sealing engagement with the first or second valve stem, respectively.

Claim 13

Dependent Claim 123 words

The disc valve of claim 9 wherein each seat ring is defined further to include an upper aperture portion adjacent and intersecting the valve member end thereof; and a lower aperture portion adjacent and intersecting the valve member end thereof; and wherein the upper aperture portion of the upstream seat and the upper aperture portion of the downstream seat are sized and positioned so that in an assembled position said upper aperture portions cooperate to encompass and sealingly engage said first valve stem; and wherein the lower aperture portion of the upstream seat and the lower aperture portion of the downstream seat are sized and positioned so that in an assembled position said lower aperture portions cooperate to encompass said second valve stem.

Claim 14

Dependent Claim 79 words

The valve assembly of claim 12 wherein a portion of the valve member end of each elastomeric seal member is sized to extend axially beyond the valve member end of each respective seal ring adjacent the upper and lower aperture portions therein, so that in an assembled position said portions of each elastomeric seal member of the upstream and downstream seats cooperate to encompass and sealing engage the first or second valve stems, respectively, about the outer peripheries thereof.

Claim 15

Dependent Claim 124 words

The valve assembly of claim 12 wherein the valve member end of each elastomeric seal member adjacent the upper and lower aperture portions of each seat ring is defined further to be formed on a larger radius than the adjacent upper or lower aperture portions, thereby providing a gap between the valve member end of each seat ring adjacent the upper and lower aperture portions therein and the valve member end of each elastomeric seal member adjacent the upper or lower aperture portions of each seat ring; and wherein the disc valve is defined further to include an O-ring seal member disposed in each of said gaps, each O-ring seal member being sized to encompass and sealingly engage the first or second valve stems.

Claim 16

Dependent Claim 47 words

The disc valve of claim 1 wherein the seating surfaces of the upstream and downstream seats are defined further to include a plurality of annular grooves extending circumferentially around the seating surfaces defining a plurality of lands therein to engage the outer periphery of the disc member.

Claim 17

Dependent Claim 393 words

A disc valve, comprising: a valve body having upstream and downstream end faces and a bore extending therethrough; a valve stem journaled in the valve body and extending at a right angle to the axis of the bore through the valve body; an annular upstream seat, having a valve member end, a nonvalve member end, and inner and outer peripheries, being adapted to be inserted axially into the bore of the valve body and supported thereby, said upstream seat having a sealing surface formed around a portion of the inner periphery thereof upstream of the valve stem and an elastomeric aperture portion adjacent and intersecting the valve member end of the upstream seat, said aperture portion being sized and positioned to sealingly engage a portion of the valve stem about a portion of the outer periphery thereof; an annular downstream seat, having a valve member end, a non valve member end, and inner and outer peripheries, being adapted to be inserted axially into the bore of the valve body and supported thereby, said downstream seat having a sealing surface formed around a portion of the inner periphery thereof, downstream of the valve stem, and an elastomeric aperture portion adjacent and intersecting the valve member end of the downstream seat, said last-mentioned aperture portion being sized and positioned to cooperate with the aperture portion of the upstream seat to encompass and sealingly engage a portion of the valve stem about the outer periphery thereof; a rigid material disc valve meMber in the valve body connected to the stem for turning movement of the disc valve member about a turning axis, between a closed position transverse to the axis of the bore through the valve body, and an open position in line with the bore through the valve body, the axial length of said disc valve member being less than the diameter thereof, said disc valve member having seating surfaces formed on the opposite ends thereof on opposite sides of the connection of the disc valve member to the stem, arranged to cooperate with the upstream and downstream seats when the disc valve member is turned to a position transverse to the axis of the bore through the valve body, both of said seating surfaces being shaped to conform to portions of a sphere having its center in the center of the disc valve member.

Claim 18

Dependent Claim 393 words

A disc valve, comprising: a valve body having upstream and downstream end faces and a bore extending therethrough; a valve stem journaled in the valve body and extending at a right angle to the axis of the bore through the valve body; an annular upstream seat, having a valve member end, a nonvalve member end, and inner and outer peripheries, being adapted to be inserted axially into the bore of the valve body and supported thereby, said upstream seat having a sealing surface formed around a portion of the inner periphery thereof upstream of the valve stem and an elastomeric aperture portion adjacent and intersecting the valve member end of the upstream seat, said aperture portion being sized and positioned to sealingly engage a portion of the valve stem about a portion of the outer periphery thereof; an annular downstream seat, having a valve member end, a non valve member end, and inner and outer peripheries, being adapted to be inserted axially into the bore of the valve body and supported thereby, said downstream seat having a sealing surface formed around a portion of the inner periphery thereof, downstream of the valve stem, and an elastomeric aperture portion adjacent and intersecting the valve member end of the downstream seat, said last-mentioned aperture portion being sized and positioned to cooperate with the aperture portion of the upstream seat to encompass and sealingly engage a portion of the valve stem about the outer periphery thereof; a rigid material disc valve meMber in the valve body connected to the stem for turning movement of the disc valve member about a turning axis, between a closed position transverse to the axis of the bore through the valve body, and an open position in line with the bore through the valve body, the axial length of said disc valve member being less than the diameter thereof, said disc valve member having seating surfaces formed on the opposite ends thereof on opposite sides of the connection of the disc valve member to the stem, arranged to cooperate with the upstream and downstream seats when the disc valve member is turned to a position transverse to the axis of the bore through the valve body, both of said seating surfaces being shaped to conform to portions of a sphere having its center in the center of the disc valve member.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1974-08-02	1975-02-01	1975-08-03	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1978-08-02	1979-02-01	1979-08-03	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1982-08-02	1983-02-01	1983-08-03	$7700.00	Window Closed / Lapsed

Disc valve with upstream and downstream seats

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