IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0331814
(2014-07-15)
|
등록번호 |
US-9568110
(2017-02-14)
|
발명자
/ 주소 |
|
출원인 / 주소 |
- Fisher Controls International LLC
|
대리인 / 주소 |
Hanley, Flight & Zimmerman, LLC
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
9 |
초록
▼
Valve seals are described. An example seal for use in a valve includes a ring-shaped cartridge having a first portion, a second portion opposite the first portion, and a compressible sealing portion between the first and second portions. The first and second portions have respective first and second
Valve seals are described. An example seal for use in a valve includes a ring-shaped cartridge having a first portion, a second portion opposite the first portion, and a compressible sealing portion between the first and second portions. The first and second portions have respective first and second curved surfaces adjacent a sealing surface of the compressible sealing portion. The first and second curved surfaces enable a flow control member to compress the sealing portion prior to contacting the curved surfaces as the flow control member transitions to a closed position.
대표청구항
▼
1. A seal for use in a valve, comprising: a ring-shaped cartridge having a first portion, a second portion opposite the first portion, and a compressible sealing portion between the first and second portions, the first and second portions having respective first and second curved surfaces adjacent a
1. A seal for use in a valve, comprising: a ring-shaped cartridge having a first portion, a second portion opposite the first portion, and a compressible sealing portion between the first and second portions, the first and second portions having respective first and second curved surfaces adjacent a sealing surface of the compressible sealing portion, the first and second curved surfaces enabling a flow control member to compress the sealing portion prior to contacting the curved surfaces as the flow control member transitions to a closed position, the sealing surface has a first radius of curvature equal to a radius of curvature of the first curved surface and a second radius of curvature equal to a radius of curvature of the second curved surface. 2. The seal as defined in claim 1, wherein, when the flow control member initially contacts the sealing surface, the first curved surface provides a first clearance between the flow control member and the first portion and the second curved surface provides a second clearance between the flow control member and the second portion. 3. The seal as defined in claim 1, wherein the first radius of curvature of the first curved surface does not equal the second radius of curvature of the second curved surface. 4. The seal as defined in claim 1, wherein the compressible sealing portion includes compressible layers disposed between the first portion and the second portion to define the sealing surface. 5. The seal as defined in claim 4, wherein the compressible sealing portion further includes a foil layer positioned between the compressible layers to further define the sealing surface and to prevent at least one of adhesion or transfer of the compressible layers. 6. The seal as defined in claim 1, wherein the first radius of curvature and the first curved surface share a first center of curvature. 7. The seal as defined in claim 6, wherein the second radius of curvature and the second curved surface share a second center of curvature. 8. A seal for use in a valve, comprising: a ring-shaped cartridge having a first portion and a second portion, the first and second portions holding a sealing portion, the first and second portions having respective first and second curved surfaces adjacent a sealing surface of the sealing portion, the first and second curved surfaces having respective first and second radii of curvature to enable an initial point of contact between a flow control member and the cartridge to be on the sealing surface when the flow control member transitions to a closed position, a first portion of the sealing surface has the first radius of curvature and a second portion of the sealing surface has the second radius of curvature. 9. The seal as defined in claim 8, wherein the first portion of the sealing surface is adjacent the first portion of the cartridge and the second portion of the sealing surface is adjacent the second portion of the cartridge. 10. A seal for using in a valve, comprising: a ring-shaped cartridge having a first portion and a second portion, the first and second portions holding a sealing portion, the first and second portions having respective first and second curved surfaces adjacent a sealing surface of the sealing portion, the first and second curved surfaces having respective first and second radii of curvature to enable an initial point of contact between a flow control member and the cartridge to be on the sealing surface when the flow control member transitions to a closed position, the sealing portion is compressible, the sealing portion includes compressible layers and a foil layer positioned between the compressible layers, the compressible layers and the foil layer define the sealing surface of the sealing portion. 11. The seal as defined in claim 10, wherein, when the flow control member initially contacts the sealing surface, the first radius of curvature provides a first clearance between the flow control member and the first portion and the second radius of curvature provides a second clearance between the flow control member and the second portion. 12. The seal as defined in claim 10, wherein the first radius of curvature is different than the second radius of curvature. 13. The seal as defined in claim 10, wherein, when the sealing portion is in a worn condition, at least one of the first curved surface and the second curved surface sealingly engages the flow control member when the flow control member is in the closed position. 14. A seal for use in a valve, comprising: means for holding means for sealing, the means for holding having first and second means for enabling a flow control member to contact the means for sealing prior to contacting the means for holding as the flow control member transitions to a closed position, the first and second means for enabling contact being adjacent the means for sealing, the first means for enabling contact and the means for sealing define a first radius of curvature and the second means for enabling contact and the means for sealing define a second radius of curvature, the first radius of curvature being different than the second radius of curvature. 15. The seal as defined in claim 14, wherein the means for holding includes means for flexibly coupling the means for holding to a valve.
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