US3892384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double seated cage valve with flexible plug seat
Assignee: Honeywell Inc
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Filing: 1974-04-12
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Granted: 1975-07-01
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Expires: 1994-04-12
Abstract
Abstract A unitary plug of a double seated cage valve is provided with a tapered tube shaped seat made of resilient material. This resilient tapered tube shaped plug seat provides a surface of increasing circumference thereon, which can be progressively forced into fluid tight seating contact against an associated annular rigid edge cage seat to enable the remaining seat on the plug to be automatically coined into fluid tight seating contact with its associated rigid edge cage seat.
Inventors
- 👤 Edward B Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:47
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/22; F16K3/24; F16K3/243; F16K1/00; F16K1/32; F16K1/34; F16K1/44; F16K3/246; F16K39/00; F16K39/02; F16K39/022; F16K39/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
216 words
A double seated cage valve for controlling the flow of fluids, said valve comprising a unitary cage member and a complementary hollow plug member formed of one piece construction, said cage member having an upper and a lower rigid seat, said plug member having a first seat means arranged for sealing engagement with said upper seat of said cage member and a second seat means arranged for sealing engagement with said lower seat of said cage member, said second seat means of said plug member being of rigid construction, said first seat means of said plug member being of a resiliently deformable frusto-conical construction and being of a thinner construction than the rest of the plug, said first and second seat means of said plug member being so spaced that as said plug is moved in a closing direction with respect to said cage member, said first seat means of said plug member engages said upper seat of said cage member before said second seat means of said plug member engages said lower seat of said cage member, whereby further movement of said plug member in said closing direction deforms said frusto-conical first seat means into intimate engagement with the associated upper seat and moves said second seat means into sealing engagement with said lower seat.
Claim 2
Dependent Claim
216 words
A double seated cage valve for controlling the flow of fluids, said valve comprising a unitary cage member and a complementary hollow plug member formed of one piece construction, said cage member having an upper and a lower rigid seat, said plug member having a first seat means arranged for sealing engagement with said upper seat of said cage member and a second seat means arranged for sealing engagement with said lower seat of said cage member, said second seat means of said plug member being of rigid construction, said first seat means of said plug member being of a resiliently deformable frusto-conical construction and being of a thinner construction than the rest of the plug, said first and second seat means of said plug member being so spaced that as said plug is moved in a closing direction with respect to said cage member, said first seat means of said plug member engages said upper seat of said cage member before said second seat means of said plug member engages said lower seat of said cage member, whereby further movement of said plug member in said closing direction deforms said frusto-conical first seat means into intimate engagement with the associated upper seat and moves said second seat means into sealing engagement with said lower seat.
Claim 3
Dependent Claim
20 words
The double seated valve as defined in claim 1 wherein each cage seat is of an annular edge shape configuration.
Claim 4
Dependent Claim
102 words
The double seated valve as defined in claim 2 wherein the top surface area of said plug member is greater than the effective area of the bottom of said plug member annular seat and wherein the inner surface of said frusto-conical seat means provides an annular area against which the pressure of a fluid on the high pressure side of said valve acts and thereby aids in forcing said plug seat means into substantially leak tight relationship with said associated cage seats after the seat means of said plug have been moved into sealing engagement with the associated seats on said cage.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-30 | 1978-12-30 | 1979-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-30 | 1982-12-30 | 1983-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-30 | 1986-12-30 | 1987-07-01 | $7700.00 | Window Closed / Lapsed |