Patent US3734134A successfully refreshed from Google Patents.
US3734134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve arrangement having two valves in a common housing and use of the arrangement in a vapor generating and utilizing plant
Assignee: Sulzer AG
•
Filing: 1971-10-27
•
Granted: 1973-05-22
•
Expires: 1991-10-27
Abstract
Abstract The invention relates to a valve design wherein a smaller and a larger valve are placed in a common housing and arranged for independent operation, the smaller valve serving for regulating the flow of operating fluid therethrough and the larger valve affording full flow or no flow of operating medium therethrough. The invention also relates to the use of the valve arrangement in a steam or vapor generating plant for facilitating starting thereof.
Inventors
- 👤 E Vogeli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:27
CPC Classifications
F; F16; F16K; F16K39/00; F16K39/02; F01; F01D; F01D17/00; F01D17/10; F01D17/12; F01D17/14; F01D17/141; F01D17/145; F16K25/00; F16K25/04; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87096; Y10T137/87121; Y10T137/87265; Y10T137/87378
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
208 words
A valve system comprising a coaxial arrangement of a first valve and a second valve in parallel relationship with respect to a flow of fluid therethrough, said first valve comprising a first valve stem having a first closure body thereon and a first valve seat, said first valve stem being secured against rotation, said second valve comprising a second valve stem and a second valve seat on said first closure body, said second valve stem being slidably mounted in said first valve stem and drive means connected to said first valve and including a threaded portion on said first valve stem, a rotatably mounted nut element in meshing engagement with said threaded portion, said nut element having an internally toothed gear thereon, a first gear engaging said internally toothed gear, a second gear rigidly connected to said first gear and being in meshing engagement with a stationary internal gear having a number of teeth differing by at least one from that of the second gear, a support connected with said nut element rotatably mounting said first gear and said second gear on a common axis thereof, said support having an internally toothed gear and at least two servomotors provided with drive pinions meshing with said internally toothed gear.
Claim 2
Dependent Claim
208 words
A valve system comprising a coaxial arrangement of a first valve and a second valve in parallel relationship with respect to a flow of fluid therethrough, said first valve comprising a first valve stem having a first closure body thereon and a first valve seat, said first valve stem being secured against rotation, said second valve comprising a second valve stem and a second valve seat on said first closure body, said second valve stem being slidably mounted in said first valve stem and drive means connected to said first valve and including a threaded portion on said first valve stem, a rotatably mounted nut element in meshing engagement with said threaded portion, said nut element having an internally toothed gear thereon, a first gear engaging said internally toothed gear, a second gear rigidly connected to said first gear and being in meshing engagement with a stationary internal gear having a number of teeth differing by at least one from that of the second gear, a support connected with said nut element rotatably mounting said first gear and said second gear on a common axis thereof, said support having an internally toothed gear and at least two servomotors provided with drive pinions meshing with said internally toothed gear.
Claim 3
Dependent Claim
157 words
A valve system comprising a coaxial arrangement of a first valve and a second valve in parallel relationship to each other with respect to a flow of fluid therethrough, said first valve comprising a first valve stem having a first closure body thereon and a first valve seat, said first valve stem being secured against rotation, said second valve comprising a second valve stem and a second valve seat on said first closure body, said second valve stem being slidably mounted in said first valve stem and drive means including a servomotor connected to said second valve stem for actuating said second valve independently of said first valve, said drive means being connected with said first valve stem of said first valve to move with said first valve stem during displacement of said first valve stem relative to said first valve seat and a second drive means including at least one servomotor for actuating said first valve.
Claim 4
Dependent Claim
157 words
A valve system comprising a coaxial arrangement of a first valve and a second valve in parallel relationship to each other with respect to a flow of fluid therethrough, said first valve comprising a first valve stem having a first closure body thereon and a first valve seat, said first valve stem being secured against rotation, said second valve comprising a second valve stem and a second valve seat on said first closure body, said second valve stem being slidably mounted in said first valve stem and drive means including a servomotor connected to said second valve stem for actuating said second valve independently of said first valve, said drive means being connected with said first valve stem of said first valve to move with said first valve stem during displacement of said first valve stem relative to said first valve seat and a second drive means including at least one servomotor for actuating said first valve.
Claim 5
Dependent Claim
150 words
A valve system comprising a coaxial arrangement of a first valve and a second valve in parallel relationship to each other with respect to flow a fow of fluid therethrough, said first valve comprising a first valve stem having a first closure body thereon and a first valve seat, said second valve comprising a second valve stem and a second valve seat on said first closure body, said second valve stem being slidably mounted in said first valve stem, and drive means including a servomotor connected to said second valve stem for actuating said second valve independently of said first valve, said drive means being connected with said first valve stem of said first valve to move with said first valve stem during displacement of said first valve stem relative to said first valve seat and a second drive means including at least one servomotor for actuating said first valve.
Claim 6
Dependent Claim
150 words
A valve system comprising a coaxial arrangement of a first valve and a second valve in parallel relationship to each other with respect to flow a fow of fluid therethrough, said first valve comprising a first valve stem having a first closure body thereon and a first valve seat, said second valve comprising a second valve stem and a second valve seat on said first closure body, said second valve stem being slidably mounted in said first valve stem, and drive means including a servomotor connected to said second valve stem for actuating said second valve independently of said first valve, said drive means being connected with said first valve stem of said first valve to move with said first valve stem during displacement of said first valve stem relative to said first valve seat and a second drive means including at least one servomotor for actuating said first valve.
Claim 7
Dependent Claim
198 words
A valve system comprising a coaxial arrangement of a first valve and a second valve in parallel relationship with respect to a flow of fluid therethrough, said first valve comprising a first valve stem having a first closure body thereon and a first valve seat, said second valve comprising a second valve stem and a second valve seat on said first closure body, said second valve stem being slidably mounted in said first valve stem and drive means connected to said first valve and including a threaded portion on said first valve stem, a rotatably mounted nut element in meshing engagement with said threaded portion, said nut element having an internally toothed gear thereon, a first gear engaging said internally toothed gear, a second gear rigidly connected to said first gear and being in meshing engagement with a stationary internal gear having a number of teeth differing by one from that of the second gear, a support connected with said nut element rotatably mounting said first gear and said second gear on a common axis thereof, said support having an internally toothed gear and at least two servomotors provided with drive pinions meshing with said internally toothed gear.
Claim 8
Dependent Claim
198 words
A valve system comprising a coaxial arrangement of a first valve and a second valve in parallel relationship with respect to a flow of fluid therethrough, said first valve comprising a first valve stem having a first closure body thereon and a first valve seat, said second valve comprising a second valve stem and a second valve seat on said first closure body, said second valve stem being slidably mounted in said first valve stem and drive means connected to said first valve and including a threaded portion on said first valve stem, a rotatably mounted nut element in meshing engagement with said threaded portion, said nut element having an internally toothed gear thereon, a first gear engaging said internally toothed gear, a second gear rigidly connected to said first gear and being in meshing engagement with a stationary internal gear having a number of teeth differing by one from that of the second gear, a support connected with said nut element rotatably mounting said first gear and said second gear on a common axis thereof, said support having an internally toothed gear and at least two servomotors provided with drive pinions meshing with said internally toothed gear.
Claim 9
Dependent Claim
109 words
A valve system comprising a coaxial arrangement of a first valve and a second valve in parallel relationship with respect to a flow of fluid therethrough, said first valve comprising a first valve stem having a first closure body thereon and a first valve seat, said second valve comprising a second valve stem and a second valve seat on said first closure body, said second valve stem being slidably mounted in said first valve stem, and drive means connected to said first valve for driving said first valve, said drive means comprising a toothed gear and at least two servomotors provided with drive pinions meshing with said toothed gear.
Claim 10
Dependent Claim
109 words
A valve system comprising a coaxial arrangement of a first valve and a second valve in parallel relationship with respect to a flow of fluid therethrough, said first valve comprising a first valve stem having a first closure body thereon and a first valve seat, said second valve comprising a second valve stem and a second valve seat on said first closure body, said second valve stem being slidably mounted in said first valve stem, and drive means connected to said first valve for driving said first valve, said drive means comprising a toothed gear and at least two servomotors provided with drive pinions meshing with said toothed gear.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |