Patent US4482313A successfully refreshed from Google Patents.
US4482313A
Expired / Lapsed
US
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Gasburner system
Assignee: Stelrad Group Ltd
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Filing: 1978-07-26
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Granted: 1984-11-13
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Expires: 1998-07-26
Abstract
Abstract A gas burner which consists of a cylindrical duct forming member closed at one end and open at the other end to receive a gas/air mixture under pressure. The member is perforated so that the gas/air mixture flows to the outside of the member where it is burned. The duct is provided with a cone-shaped plug for reducing the volume of the duct from the open end towards the closed end so that a constant velocity of gas/air mixture is maintained within the duct to obtain a uniform static pressure on the outside in the region where the gas/air mixture is burned.
Inventors
- 👤 Harry A. Cheetham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:45
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/18; F23N5/188; F23D; F23D14/00; F23D14/46; F23D14/60; F23D14/62; F23D14/72; F23D14/82; F23N1/00; F23N1/02; F23N1/025; F23N1/027; F23N2225/00; F23N2225/04; F23N2225/06; F23N2233/00; F23N2233/06; F23N2235/00; F23N2235/12; F23N2235/14; F23N2235/18; F23N2235/20; F23N2235/24
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
176 words
A gas burner comprising a member defining a duct closed at one end and open at the other, said member having a longitudinally extending perforated wall or wall portion, means for connecting the open end to a source of gas/air mixture under pressure, means within the member or forming part of the member for gradually reducing the volume of the duct from the open end toward the closed end so that in use of the burner a constant velocity of gas/air mixture is maintained within the duct to obtain a uniform static pressure on the outside of the perforated wall or wall portion where the gas/air mixture is burned, the open end of said duct being connected to the discharge duct of a fan provided with means for introducing gas under pressure to the air upstream of the fan rotor blades, the gas supply including in series a governor, solenoid-operated flow control valves and a zero governor controlled by pressure at the discharge side of the fan and pressure in the combustion region of the burner.
Claim 2
Dependent Claim
176 words
A gas burner comprising a member defining a duct closed at one end and open at the other, said member having a longitudinally extending perforated wall or wall portion, means for connecting the open end to a source of gas/air mixture under pressure, means within the member or forming part of the member for gradually reducing the volume of the duct from the open end toward the closed end so that in use of the burner a constant velocity of gas/air mixture is maintained within the duct to obtain a uniform static pressure on the outside of the perforated wall or wall portion where the gas/air mixture is burned, the open end of said duct being connected to the discharge duct of a fan provided with means for introducing gas under pressure to the air upstream of the fan rotor blades, the gas supply including in series a governor, solenoid-operated flow control valves and a zero governor controlled by pressure at the discharge side of the fan and pressure in the combustion region of the burner.
Claim 3
Dependent Claim
172 words
A gas burner comprising a member defining a duct closed at one end and open at the other end, said member having a longitudinally extending perforated wall or wall portion, means for connecting the open end to a source of gas/air mixture under pressure, means within the member or forming part of the member for gradually reducing the volume of the duct from the open end toward the closed end so that in use of the burner a constant velocity of gas/air mixture is maintained within the duct to obtain a uniform static pressure on the outside of the perforated wall or wall portion where the gas/air mixture is burned, said open end being connected to the discharge duct of a fan provided with means for introducing gas under pressure to the air upstream of the fan rotor blades, the gas supply including in series a governor, solenoid-operated flow control valves and a zero governor controlled by pressure at the discharge side of the fan and in a duct housing the burner.
Claim 4
Dependent Claim
172 words
A gas burner comprising a member defining a duct closed at one end and open at the other end, said member having a longitudinally extending perforated wall or wall portion, means for connecting the open end to a source of gas/air mixture under pressure, means within the member or forming part of the member for gradually reducing the volume of the duct from the open end toward the closed end so that in use of the burner a constant velocity of gas/air mixture is maintained within the duct to obtain a uniform static pressure on the outside of the perforated wall or wall portion where the gas/air mixture is burned, said open end being connected to the discharge duct of a fan provided with means for introducing gas under pressure to the air upstream of the fan rotor blades, the gas supply including in series a governor, solenoid-operated flow control valves and a zero governor controlled by pressure at the discharge side of the fan and in a duct housing the burner.
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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) | 1987-11-13 | 1988-05-14 | 1988-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-13 | 1992-05-14 | 1992-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-13 | 1996-05-14 | 1996-11-13 | $7700.00 | Window Closed / Lapsed |