US5584467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear gaseous fuel flow controller
Assignee: GFI-USA Inc
•
Filing: 1994-09-02
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Granted: 1996-12-17
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Expires: 2014-09-02
Abstract
Abstract A fluid flow control system which can function under a range of input pressures for regulating the flow of fluid as a function of a variable input voltage and having a feedback feature which produces an electrical signal equivalent to the volume of fluid actually flowing from the control system, comprising a pressure balanced valve, a proportional solenoid having a movable shaft responsive to the input voltage and adapted to open the valve, said valve including, a fluid intake chamber having an intake port and a valve port, a fluid discharge chamber having a discharge port, a valve disk and a cooperating valve seat where the valve disk is connected to the shaft of the proportional solenoid so as to open and close the valve, a flexible diaphragm having a centrally disposed piston in contact with the valve disk a pressure equalizing chamber contiguous to the diaphragm, a biasing spring in contact with the piston and exerting a force thereon in a direction toward the valve disk for normally maintaining the valve disk sealed against its valve seat, and a fluid flow measurement device disposed in the discharge port for measuring the fluid flowing from the fluid discharge chamber.
Inventors
- 👤 Sean O. Harnett
- 👤 Terry L. Cornelison
- 👤 Ronald E. Chasteen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:32
CPC Classifications
F; F02; F02D; F02D21/00; F02D21/02; F02D19/00; F02D19/02; F02D19/021; F02D19/023; F02D19/026; F02D19/027; F02M; F02M21/00; F02M21/02; F02M21/0218; F02M21/023; F02M21/0239; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/30; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2521
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
254 words
A fluid flow control system for regulating the flow of fluid under a range of pressures as a function of a variable input voltage, comprising: a proportional solenoid having a movable shaft responsive to the input voltage, a pressure balanced valve including, a fluid intake chamber having, an intake port, and an output port which comprises a valve seat and a cooperating valve disk which is connected to the shaft of the proportional solenoid, a fluid output chamber having a fluid discharge port and communicating with the fluid intake chamber through the said output port, a flexible diaphragm having a centrally disposed piston with upper and lower portions and wherein the lower portion of the piston is in contact with the valve disk, a pressure equalizing chamber contiguous to the diaphragm, conduit means interconnecting the fluid intake chamber and the pressure equalizing chamber; biasing means in contact with the upper portion of the piston and exerting a force thereon in a direction toward the valve disk, tending to keep the valve disk sealed against the valve seat, and wherein the diaphragm and piston and the valve disk are respectively sized and dimensioned so that the equal pressures existing in the intake chamber and the pressure equalizing chamber and acting on the diaphragm and the valve disk will produce a force differential that will, absent other forces acting on the disk, keep the disk closed against the valve seat, and wherein the force exerted by the biasing means is greater than the said differential force.
Claim 2
Dependent Claim
254 words
A fluid flow control system for regulating the flow of fluid under a range of pressures as a function of a variable input voltage, comprising: a proportional solenoid having a movable shaft responsive to the input voltage, a pressure balanced valve including, a fluid intake chamber having, an intake port, and an output port which comprises a valve seat and a cooperating valve disk which is connected to the shaft of the proportional solenoid, a fluid output chamber having a fluid discharge port and communicating with the fluid intake chamber through the said output port, a flexible diaphragm having a centrally disposed piston with upper and lower portions and wherein the lower portion of the piston is in contact with the valve disk, a pressure equalizing chamber contiguous to the diaphragm, conduit means interconnecting the fluid intake chamber and the pressure equalizing chamber; biasing means in contact with the upper portion of the piston and exerting a force thereon in a direction toward the valve disk, tending to keep the valve disk sealed against the valve seat, and wherein the diaphragm and piston and the valve disk are respectively sized and dimensioned so that the equal pressures existing in the intake chamber and the pressure equalizing chamber and acting on the diaphragm and the valve disk will produce a force differential that will, absent other forces acting on the disk, keep the disk closed against the valve seat, and wherein the force exerted by the biasing means is greater than the said differential force.
Claim 3
Dependent Claim
177 words
A fluid flow control system for regulating the flow of fluid under a range of pressures as a function of a variable input voltage, comprising: a pressure balanced valve, solenoid means having a movable shaft responsive to the input voltage and adapted to open the valve, said valve including, a fluid intake chamber having an intake port and a valve port, a fluid discharge chamber having a discharge port, a valve disk and a cooperating valve seat comprising the valve port where the valve disk is disposed in operating relationship with the shaft of the proportional solenoid, a flexible diaphragm having a centrally disposed piston in contact with the valve disk, a pressure equalizing chamber contiguous to the diaphragm, conduit means interconnecting the fluid intake chamber and the pressure equalizing chamber, biasing means in contact with the piston and exerting a force thereon in a direction toward the valve disk for normally maintaining the valve disk sealed against the valve seat, and means disposed in the discharge port for measuring fluid flowing from the fluid discharge chamber.
Claim 4
Dependent Claim
177 words
A fluid flow control system for regulating the flow of fluid under a range of pressures as a function of a variable input voltage, comprising: a pressure balanced valve, solenoid means having a movable shaft responsive to the input voltage and adapted to open the valve, said valve including, a fluid intake chamber having an intake port and a valve port, a fluid discharge chamber having a discharge port, a valve disk and a cooperating valve seat comprising the valve port where the valve disk is disposed in operating relationship with the shaft of the proportional solenoid, a flexible diaphragm having a centrally disposed piston in contact with the valve disk, a pressure equalizing chamber contiguous to the diaphragm, conduit means interconnecting the fluid intake chamber and the pressure equalizing chamber, biasing means in contact with the piston and exerting a force thereon in a direction toward the valve disk for normally maintaining the valve disk sealed against the valve seat, and means disposed in the discharge port for measuring fluid flowing from the fluid discharge chamber.
References Cited (Backward Citations)
US3606241A
Cited
US3671009A
Cited
US3949964A
Cited
US4662604A
Cited
US4796854A
Cited
US4840148A
Cited
US4858853A
Cited
US5150690A
Cited
US5188337A
Cited
US5105791A
Cited
US5401087A
Cited
US5367999A
Cited
US5353765A
Cited
US5353765B1
Cited
US5377647A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-12-17 | 2000-06-17 | 2000-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-12-17 | 2004-06-17 | 2004-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-12-17 | 2008-06-17 | 2008-12-17 | $7700.00 | Window Closed / Lapsed |