Patent US4856558A successfully refreshed from Google Patents.
US4856558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flapper control valve
Assignee: Gas Technology Institute
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Filing: 1988-08-05
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Granted: 1989-08-15
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Expires: 2008-08-05
Abstract
Abstract A flapper control valve having a valve housing and at least one valve port plate sealably secured to the valve housing. Each valve port plate has at least one valve port plate through hole. At least one back plate is mounted downstream from the valve port plate and in an open position at a distance from the valve port plate. Each back plate has at least one back plate through hole. In the open position, at least one valve port plate through hole is in communication with at least one back plate through hole. The distance between the back plate and the valve port plate in the open position can be closed thus sealing the communication between at least one valve port plate through hole and at least one back plate through hole.
Inventors
- 👤 Peter Kardos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:15
CPC Classifications
F; F02; F02M; F02M21/00; F02M21/02; F02M21/04; F02M21/042; F02D; F02D9/00; F02D9/08; F02D9/12; F02M21/0218; F02M21/023; F02M21/0233; F02M21/0239; F16; F16K; F16K17/00; F16K17/02; F16K17/04; F02B; F02B43/00; F16K2200/00; F16K2200/20; F16K2200/203; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/30; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7839; Y10T137/7859; Y10T137/7861; Y10T137/8593; Y10T137/86493; Y10T137/86718; Y10T137/86759
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
243 words
A one-directional flapper control valve comprising: a valve housing having at least one inlet fitting and at least one flat side, at least one valve port plate sealably secured to said at least one flat side of said valve housing, each said valve port plate having at least one valve port plate through hole; at least one back plate, each said back plate having at least one back plate through hole, said back plate mounted in an open position relative to and at a distance from said valve port plate, in said open position said at least one valve port plate through hole in communication with said at least one back plate through hole; and closing means for closing a gap between said back plate and said valve port plate thereby sealing the communication between said at least one valve port plate through hole and said at least one back plate through hole, said closing means further comprising a plurality of ring flappers mounted between each said valve port plate and a corresponding said back plate, in a closed position of said back plate with respect to said valve port plate each said ring flapper seating against and between said valve port plate and said back plate closing communication between each said back plate through hole and each said valve port plate through hole, solenoid means and control means for switching the flapper control valve between said open position and said closed position.
Claim 2
Dependent Claim
243 words
A one-directional flapper control valve comprising: a valve housing having at least one inlet fitting and at least one flat side, at least one valve port plate sealably secured to said at least one flat side of said valve housing, each said valve port plate having at least one valve port plate through hole; at least one back plate, each said back plate having at least one back plate through hole, said back plate mounted in an open position relative to and at a distance from said valve port plate, in said open position said at least one valve port plate through hole in communication with said at least one back plate through hole; and closing means for closing a gap between said back plate and said valve port plate thereby sealing the communication between said at least one valve port plate through hole and said at least one back plate through hole, said closing means further comprising a plurality of ring flappers mounted between each said valve port plate and a corresponding said back plate, in a closed position of said back plate with respect to said valve port plate each said ring flapper seating against and between said valve port plate and said back plate closing communication between each said back plate through hole and each said valve port plate through hole, solenoid means and control means for switching the flapper control valve between said open position and said closed position.
Claim 3
Dependent Claim
16 words
A one-directional flapper control valve according to claim 1 wherein said valve housing forms a polyhedron.
Claim 4
Dependent Claim
281 words
A one-directional flapper control valve comprising: a valve housing having at least one inlet fitting and at least one flat side, at least one valve port plate sealably secured to said at least one flat side of said valve housing, each said valve port plate having at least one valve port plate through hole; at least one back plate, each said back plate having at least one back plate through hole, said back plate mounted in an open position relative to and at a distance from said valve port plate, in said open position said at least one valve port plate through hole in communication with said at least one back plate through hole; closing means for closing a gap between said back plate and said valve port plate thereby sealing the communication between said at least one valve port plate through hole and said at least one back plate through hole; and said closing means further comprises: a plurality of pins, a plurality of ring flappers, each said pin having a back plate pin portion slidably mounted within said back plate and a valve port pin portion sealably secured to said ring flapper, in said closed position of said back plate with respect to said valve port plate said ring flapper seating against said valve port plate and sealing said valve port plate through hole; and a control rod having one end secured to said back plate, activating means for displacing said control rod with respect to said valve port plate and abutting said back plate against said at least one ring flapper, and control means for switching the flapper control valve between said open position and said closed position.
Claim 5
Dependent Claim
281 words
A one-directional flapper control valve comprising: a valve housing having at least one inlet fitting and at least one flat side, at least one valve port plate sealably secured to said at least one flat side of said valve housing, each said valve port plate having at least one valve port plate through hole; at least one back plate, each said back plate having at least one back plate through hole, said back plate mounted in an open position relative to and at a distance from said valve port plate, in said open position said at least one valve port plate through hole in communication with said at least one back plate through hole; closing means for closing a gap between said back plate and said valve port plate thereby sealing the communication between said at least one valve port plate through hole and said at least one back plate through hole; and said closing means further comprises: a plurality of pins, a plurality of ring flappers, each said pin having a back plate pin portion slidably mounted within said back plate and a valve port pin portion sealably secured to said ring flapper, in said closed position of said back plate with respect to said valve port plate said ring flapper seating against said valve port plate and sealing said valve port plate through hole; and a control rod having one end secured to said back plate, activating means for displacing said control rod with respect to said valve port plate and abutting said back plate against said at least one ring flapper, and control means for switching the flapper control valve between said open position and said closed position.
Claim 6
Dependent Claim
90 words
A one-directional flapper control valve according to claim 3 wherein said activating means further comprises: a valve port plate bushing seated within said valve port plate, a limiting spacer abutting said valve port plate bushing, said control rod having a control rod center shoulder abutting said limiting spacer, a spring abutting said control rod center shoulder, an actuator bracket bushing abutting said spring, an actuator bracket abutting said actuator bracket bushing, said actuator bracket secured with respect to said valve port plate, and actuator means secured to said actuator bracket.
Claim 7
Dependent Claim
17 words
A one-directional flapper control valve according to claim 4 wherein said actuator means is an electromagnetic solenoid.
Claim 8
Dependent Claim
16 words
A one-directional flapper control valve according to claim 5 wherein said valve housing forms a polyhedron.
Claim 9
Dependent Claim
250 words
In a one-directional flapper control valve of the type having a valve housing, at least one inlet fitting and at least one flat side, the improvement which comprises at least one valve port plate sealably secured to said at least one flat side of said valve housing, each said valve port plate having at least one valve port plate through hole; at least one back plate, each said back plate having at least one back plate through hole, said back plate mounted in an open position relative to and at a distance from said valve port plate, in said open position said at least one valve port plate through hole in communication with said at least one back plate through hole; and closing means for closing a gap between said back plate and said valve port plate thereby sealing the communication between said at least one valve port plate through hole and said at least one back plate through hole, said closing means further comprising a plurality of ring flappers mounted between each said valve port plate and a corresponding said back plate, in a closed position of said back plate with respect to said valve port plate each said ring flapper seating against and between said valve port plate and said back plate closing communication between each said back plate through hole and each said valve port plate through hole, solenoid means and control means for switching the flapper control valve between said open position and said closed position.
Claim 10
Dependent Claim
250 words
In a one-directional flapper control valve of the type having a valve housing, at least one inlet fitting and at least one flat side, the improvement which comprises at least one valve port plate sealably secured to said at least one flat side of said valve housing, each said valve port plate having at least one valve port plate through hole; at least one back plate, each said back plate having at least one back plate through hole, said back plate mounted in an open position relative to and at a distance from said valve port plate, in said open position said at least one valve port plate through hole in communication with said at least one back plate through hole; and closing means for closing a gap between said back plate and said valve port plate thereby sealing the communication between said at least one valve port plate through hole and said at least one back plate through hole, said closing means further comprising a plurality of ring flappers mounted between each said valve port plate and a corresponding said back plate, in a closed position of said back plate with respect to said valve port plate each said ring flapper seating against and between said valve port plate and said back plate closing communication between each said back plate through hole and each said valve port plate through hole, solenoid means and control means for switching the flapper control valve between said open position and said closed position.
Claim 11
Dependent Claim
250 words
In a one-directional flapper control valve of the type having a valve housing, at least one inlet fitting and at least one flat side, the improvement which comprises at least one valve port plate sealably secured to said at least one flat side of said valve housing, each said valve port plate having at least one valve port plate through hole; at least one back plate, each said back plate having at least one back plate through hole, said back plate mounted in an open position relative to and at a distance from said valve port plate, in said open position said at least one valve port plate through hole in communication with said at least one back plate through hole; and said closing means further comprises: a plurality of pins, a plurality of ring flappers, each said pin having a back plate pin portion slidably mounted within said back plate and a valve port pin portion sealably secured to said ring flapper, in said closed position of said back plate with respect to said valve port plate said ring flapper seating against said valve port plate and sealing said valve port plate through hole; and a control rod having one end secured to said back plate, activating means for displacing said control rod with respect to said valve port plate and abutting said back plate against said at least one ring flapper, and control means for switching the flapper control valve between said open position and said closed position.
Claim 12
Dependent Claim
250 words
In a one-directional flapper control valve of the type having a valve housing, at least one inlet fitting and at least one flat side, the improvement which comprises at least one valve port plate sealably secured to said at least one flat side of said valve housing, each said valve port plate having at least one valve port plate through hole; at least one back plate, each said back plate having at least one back plate through hole, said back plate mounted in an open position relative to and at a distance from said valve port plate, in said open position said at least one valve port plate through hole in communication with said at least one back plate through hole; and said closing means further comprises: a plurality of pins, a plurality of ring flappers, each said pin having a back plate pin portion slidably mounted within said back plate and a valve port pin portion sealably secured to said ring flapper, in said closed position of said back plate with respect to said valve port plate said ring flapper seating against said valve port plate and sealing said valve port plate through hole; and a control rod having one end secured to said back plate, activating means for displacing said control rod with respect to said valve port plate and abutting said back plate against said at least one ring flapper, and control means for switching the flapper control valve between said open position and said closed position.
Claim 13
Dependent Claim
91 words
An improved one-directional flapper control valve according to claim 8 wherein said activating means further comprises: a valve port plate bushing seated within said valve port plate, a limiting spacer abutting said valve port plate bushing, said control rod having a control rod center shoulder abutting said limiting spacer, a spring abutting said control rod center shoulder, an actuator bracket bushing abutting said spring, an actuator bracket abutting said actuator bracket bushing, said actuator bracket secured with respect to said valve port plate, and actuator means secured to said actuator bracket.
Claim 14
Dependent Claim
18 words
An improved one-directional flapper control valve according to claim 9 wherein said actuator means is an electromagnetic solenoid.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-08-14 | 1993-02-13 | 1993-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-14 | 1997-02-13 | 1997-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-14 | 2001-02-13 | 2001-08-15 | $7700.00 | Window Closed / Lapsed |