US2999535A - Flame shapers - Google Patents
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- US2999535A US2999535A US647302A US64730257A US2999535A US 2999535 A US2999535 A US 2999535A US 647302 A US647302 A US 647302A US 64730257 A US64730257 A US 64730257A US 2999535 A US2999535 A US 2999535A
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- flame
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/84—Flame spreading or otherwise shaping
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- This invention relates to flame shapers or spreaders for gas burners, or the like.
- One object of the present invention is to provide a flame shaper that may be mounted on a gas burner tube so as to produce a long flat flame which is directed ob liquely from the end of the tube, in a downward or lateral direction.
- a further object is to provide a new and improved flame shaper or spreader of the foregoing character which will produce a flame adapted to be deflected upwardly or laterally by a forced draft, as in a clothes dryer, or the like.
- FIG. 1 is a side elevational view showing a gas burner with a flame shaper or spreader that will be described as an illustrative embodiment of the present invention.
- FIG. 2 is a somewhat enlarged central elevational sectional view of the burner and flame shaper shown in FIG. 1.
- FIG. 3 is a front end view of the flame shaper.
- FIG. 4 is a top view of the flame shaper of FIG. 1.
- FIG. 5 is a top view of a modified flame shaper.
- FIG. 6 is a side elevational view of the modified flame shaper of FIG. 5.
- FIG. 7 is a front end view of the flame shaper of FIG. 5.
- FIG. 8 is a rear end view, showing a special application of the flame shaper of FIG. 5, with the flame shaper tilted laterally.
- FIGS. 1 and 2 illustrate a known form of burner tube 10, having a port 12 adapted to discharge a mixture of fuel and air, for combustion in a flame having its base adjacent to the port. It will also be seen that the burner tube 10 is turned inwardly around the port 12 at an acute angle, to define a flange 14. The tube 10 is shown as being horizontal.
- the main flame from the burner tube 10 is deflected downwardly or laterally, in this case downwardly, by a flame shaper or spreader 16 which is in the general form of an inverted shovel or scoop.
- the flame shaper 16 has a pair of side walls or flanges 1 8 with a top wall or web 20 extending therebetween. It will be seen that the top wall 20 is flat in form and is inclined downwardly across the axis of the burner tube 10. Thus, the top wall deflects the flame downwardly, while cooperating with the side wall flanges 18 to flatten and lengthen the flame.
- the flame is indicated at 22.
- the side flanges 18 have mounting legs or extensions 24 which straddle the end of the burner tube 10 and are welded or otherwise suitably secured thereto.
- the mounting legs 24 space the inclined top wall 20 outwardly from the end of the burner tube It) so that a definite gap 26 is formed therebetween.
- an ear or flange '30 is arranged to project upwardly from the inner end of the top wall 2i It will be seen that the car 30 catches a small part of the combustible mixture and directs it into the retaining flame.
- the small retaining flame 28 has the effect of stabilizing the main flame 22 so that the main flame will not readily be blown out.
- the exact flame pattern produced by the flame shaper ice 1 16 can readily be varied by changing the proportions of the flame shaper.
- the angularity of the top wall 20 determines the extent to which the flame is deflected downwardly.
- the length and narrowness of the flame may be increased by increasing the length of the side and top walls 18 and 20, and decreasing the spacing between the side walls.
- the flame shaper 16 is especially well adapted for use in a clothes dryer or some other device in which a forced updraft, represented at 32 in FIG. 1, is normally produced adjacent the outer end of the main flame 22.
- a forced updraft represented at 32 in FIG. 1
- the forced draft has the effect of deflecting the outer end of the flame 22 upwardly, generally to the position shown in full lines in FIG. 1.
- the flame shaper 16 will have the effect of deflecting the flame to a lower path, indicated in broken lines in FIG. 1.
- This movement of the flame 22 may be utilized to operate a safety switch or other control device 34, adapted to shut off the burner 10 when the forced draft 3! is absent.
- the safety switch 34 is positioned in the lower path occupied by the flame when the forced draft 32 is not present, but is below the normal path of the flame. Thus, the heat of the flame will operate the safety switch 34 only when the forced draft is absent.
- FIGS. 5-7 illustrate the slightly modified flame shaper 36 adapted to produce a narrower flame than that produced by the flame shaper of FIGS. 1-4.
- the flame shaper 36 has side wall flanges 38 which taper or converge toward each other, from their inner to their outer ends.
- a top wall 40 extends between the side wall flang s 38 and is inclined downwardly between those inner and outer ends, but, in this case, the angle of inclination is somewhat less than in the flame shaper of FIG. 1.
- the side wall flanges 38 have mounting leg portions 42, which straddle the burner tube 10 and space the top wall 46 outwardly from the end of the burner tube.
- an upwardly directed flange or car 44 provides a retaining flame as before.
- FIG. 8 shows a special application of the flame shaper 36, with the flame shaper tilted laterally so as to provide a flame which is deflected laterally, as well as downwardly, by the inclined top wall 40.
- the flame shapers have the important advantage of producing a flame which is long and flat and which is inclined downwardly.
- the flame shaper may be employed to advantage where there is a forced updraft that normally will deflect the outer end of the flame upwardly, away from the safety device that will cut off the flame if the updraft is absent.
- the flame shaper may be employed in clothes dryers or other devices utilizing a forced air blast.
- a. burner comprising a mixture tube with a front end having an axial discharge port therein to discharge fuel-air mixture from said tube, a generally inverted channel-shaped flame shaper having a substantially flat planar top wall spaced forwardly from the end of said mixture tube and inclined downwardly between its rear and front ends across the axis of said mixture tube to deflect most of the mixture downwardly to form a main flame portion, a pair of laterally spaced substantially flat generally vertical sidewall flanges projecting downwardly from said top wall and extending generally from rear to front along said top wall to confine the portion of -the-mixture intercepted by said top wall, said sidewall flanges having leg portions constituting rearward extensions thereof and extending rearwardly of the rear end of said top wall and terminating in mounting portions secured to said mixture' tube, said leg portions having a gap therebetween opening upwardly between said front end of said tube and said rear end'of said top wall, and a substantially vertical flame-retaining wall portion extending upwardly from the rear end of said top
- a burner comprising a mixture tube with a front end having an axial discharge port therein to discharge fuel-air mixture from said tube, a generally channel-shaped flame shaper having a substantially straight planar deflecting wall with its rear end spaced forwardly from the end of said tube and extending obliquely from rear to front across the axis of said tube at a small angle to said axis for deflecting most of the mix ture in one transverse direction to form a'main flame portion, a pair of'opposed laterally spaced sidewall flanges projecting from said deflecting wall in said one transverse direction and extending generally from rear to front along said deflecting wall to confine the portion of the mixture intercepted by said deflecting wall, said sidewall flanges having leg portions constituting rearward extensions thereof and extending rearwardly of the rear end of said deflecting wall and terminating in mounting portions secured to said mixture tube, said leg portions having a gap therebetween opening upwardly between said front end of said tube and said rear end of
- said flame-retaining wall extending transversely to the general direction of said sidewall flanges and being spaced forwardly from the front end of said tube and opposite a portion of said port for intercepting and deflecting a portion of the mixture through said gap between said flame-retaining wall and said tube to form a relatively small secondary flame portion.
- a burner comprising a mixture tube with a front end having an axial discharge port therein to discharge fuel-air mixture from said tube, a generally channel-shaped flame shaper having a substantially straight planar deflecting wall with its rear end spaced forwardly from the end of said tube and extending obliquely from rear to front across the axis of said tube at a small angle to said axis for deflecting most of the mixture in one transverse direction to form a main flame portion, a pair of opposed laterally spaced sidewall flanges projecting from said deflecting wall in said one transverse direction and extending generally from rear to front along said deflecting wall to confine the portion of the mixture intercepted by said deflecting wall, said sidewall flanges converging progressively to a substantial extent toward each other in a forward direction, said sidewall flanges having leg portions constituting rearward extensions thereof and extending rearwardly of the rear end of said deflecting wall and terminating in mounting portions secured to said mixture tube, said leg portions
- a burner comprising a generally horizontal mixture tube with a front end having an axial discharge port therein to discharge fuel-air mixture from said tube, a generally inverted channel-shaped flame shaper having a substantially straight planar top-wall with its rear end spaced forwardly from the end-of said'tube and inclined downwardly between its rear and front ends across the axis of said tube for deflecting most of the mixture downwardly to form a main flame portion, a pair of opposed laterally spaced sidewall flanges projecting downwardly from said top wall and extending generally from rear to front along said top wall to confine the portion of the mixture intercepted by said top wall, said sidewall flanges having leg portions constituting rearward extensions thereof and extending rearwardly of the rear end of said top wall and terminating in mounting portions secured to said mixture tube, said leg portions having a gap therebetween opening upwardly between said front end of said tube and said rear end of said top wall, and a flame-retaining wall connected to the rear end of said top wall at the front end-of said
- a flame shaper for use on the front end of a mixture tube of a burner, said flame shaper comprising a generally inverted channel-shaped structure having a pair of spaced opposed substantially flat generally vertical sidewall flanges extending generally in a rear-to-front direction with a substantially flat planar top wall extending therebetween and inclined downwardly between its rear and front endsfor deflecting fuel-air mixture downwardly to form a main flame-portion, said sidewall flanges having leg portions constituting rearward extensions thereof and extending rearwardly of the rear end of said top wall, said leg portions having mounting portions at their rear ends for mounting said flame shaper on a mixture tube with the rear end of said topwall spaced forwardly therefrom, said leg portions having an upwardly opening gap therebetween with the rear end of said top Wall at the front end of said gap, and a flame-retaining wall projecting upwardly from the rear end of said top wall at the front end of said gap and extending transversely to the general direction of said sidewall flanges for carrying a portion of the mixture-
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- Engineering & Computer Science (AREA)
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- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
Description
Sept. 12, 1961 J. T. ALGER 2,999,535
FLAME SHAPERS Filed March 20. 1957 INVENTOR.
Jerry Tfllyer ilnited States Patent G 2,999,535 FLAME SHAPERS Jerry T. Alger, Chicago, Ill., assignor, by mesne assignments, to Configured Tube Products Co., St. Louis, Mo., a corporation of Missouri Filed Mar. 20, 1957, Ser. No. 647,302 Claims. (Cl. 158-413) This invention relates to flame shapers or spreaders for gas burners, or the like.
One object of the present invention is to provide a flame shaper that may be mounted on a gas burner tube so as to produce a long flat flame which is directed ob liquely from the end of the tube, in a downward or lateral direction.
A further object is to provide a new and improved flame shaper or spreader of the foregoing character which will produce a flame adapted to be deflected upwardly or laterally by a forced draft, as in a clothes dryer, or the like.
Further objects and advantages of the present invention will appear from the following description, taken with the accompanying drawings, in which FIG. 1 is a side elevational view showing a gas burner with a flame shaper or spreader that will be described as an illustrative embodiment of the present invention.
FIG. 2 is a somewhat enlarged central elevational sectional view of the burner and flame shaper shown in FIG. 1.
FIG. 3 is a front end view of the flame shaper.
FIG. 4 is a top view of the flame shaper of FIG. 1.
FIG. 5 is a top view of a modified flame shaper.
FIG. 6 is a side elevational view of the modified flame shaper of FIG. 5.
FIG. 7 is a front end view of the flame shaper of FIG. 5.
FIG. 8 is a rear end view, showing a special application of the flame shaper of FIG. 5, with the flame shaper tilted laterally.
it will be seen that FIGS. 1 and 2 illustrate a known form of burner tube 10, having a port 12 adapted to discharge a mixture of fuel and air, for combustion in a flame having its base adjacent to the port. It will also be seen that the burner tube 10 is turned inwardly around the port 12 at an acute angle, to define a flange 14. The tube 10 is shown as being horizontal.
The main flame from the burner tube 10 is deflected downwardly or laterally, in this case downwardly, by a flame shaper or spreader 16 which is in the general form of an inverted shovel or scoop. Thus, the flame shaper 16 has a pair of side walls or flanges 1 8 with a top wall or web 20 extending therebetween. It will be seen that the top wall 20 is flat in form and is inclined downwardly across the axis of the burner tube 10. Thus, the top wall deflects the flame downwardly, while cooperating with the side wall flanges 18 to flatten and lengthen the flame. In FIG. 1, the flame is indicated at 22.
The side flanges 18 have mounting legs or extensions 24 which straddle the end of the burner tube 10 and are welded or otherwise suitably secured thereto. The mounting legs 24 space the inclined top wall 20 outwardly from the end of the burner tube It) so that a definite gap 26 is formed therebetween.
To provide a small retaining flame 28 adjacent to the base of the main flame, an ear or flange '30 is arranged to project upwardly from the inner end of the top wall 2i It will be seen that the car 30 catches a small part of the combustible mixture and directs it into the retaining flame. The small retaining flame 28 has the effect of stabilizing the main flame 22 so that the main flame will not readily be blown out.
The exact flame pattern produced by the flame shaper ice 1 16 can readily be varied by changing the proportions of the flame shaper. Thus, the angularity of the top wall 20 determines the extent to which the flame is deflected downwardly. The length and narrowness of the flame may be increased by increasing the length of the side and top walls 18 and 20, and decreasing the spacing between the side walls.
The flame shaper 16 is especially well adapted for use in a clothes dryer or some other device in which a forced updraft, represented at 32 in FIG. 1, is normally produced adjacent the outer end of the main flame 22. It will be understood that the forced draft 32 is produced by a blower or the like, not shown. The forced draft has the effect of deflecting the outer end of the flame 22 upwardly, generally to the position shown in full lines in FIG. 1. When the forced draft is absent, the flame shaper 16 will have the effect of deflecting the flame to a lower path, indicated in broken lines in FIG. 1. This movement of the flame 22 may be utilized to operate a safety switch or other control device 34, adapted to shut off the burner 10 when the forced draft 3!) is absent. It will be seen that the safety switch 34 is positioned in the lower path occupied by the flame when the forced draft 32 is not present, but is below the normal path of the flame. Thus, the heat of the flame will operate the safety switch 34 only when the forced draft is absent.
FIGS. 5-7 illustrate the slightly modified flame shaper 36 adapted to produce a narrower flame than that produced by the flame shaper of FIGS. 1-4. Thus, the flame shaper 36 has side wall flanges 38 which taper or converge toward each other, from their inner to their outer ends. As before, a top wall 40 extends between the side wall flang s 38 and is inclined downwardly between those inner and outer ends, but, in this case, the angle of inclination is somewhat less than in the flame shaper of FIG. 1. As in the first embodiment, the side wall flanges 38 have mounting leg portions 42, which straddle the burner tube 10 and space the top wall 46 outwardly from the end of the burner tube. At the inner end of the upper wall 40 an upwardly directed flange or car 44 provides a retaining flame as before.
FIG. 8 shows a special application of the flame shaper 36, with the flame shaper tilted laterally so as to provide a flame which is deflected laterally, as well as downwardly, by the inclined top wall 40.
The flame shapers have the important advantage of producing a flame which is long and flat and which is inclined downwardly. As already indicated, the flame shaper may be employed to advantage where there is a forced updraft that normally will deflect the outer end of the flame upwardly, away from the safety device that will cut off the flame if the updraft is absent. Thus, the flame shaper may be employed in clothes dryers or other devices utilizing a forced air blast.
Various modifications, alternative constructions and equivalents may be employed without departing from the true spirit and scope of the invention, as exemplified in the foregoing description and defined in the following claims.
I claim:
1. In a. burner, the combination comprising a mixture tube with a front end having an axial discharge port therein to discharge fuel-air mixture from said tube, a generally inverted channel-shaped flame shaper having a substantially flat planar top wall spaced forwardly from the end of said mixture tube and inclined downwardly between its rear and front ends across the axis of said mixture tube to deflect most of the mixture downwardly to form a main flame portion, a pair of laterally spaced substantially flat generally vertical sidewall flanges projecting downwardly from said top wall and extending generally from rear to front along said top wall to confine the portion of -the-mixture intercepted by said top wall, said sidewall flanges having leg portions constituting rearward extensions thereof and extending rearwardly of the rear end of said top wall and terminating in mounting portions secured to said mixture' tube, said leg portions having a gap therebetween opening upwardly between said front end of said tube and said rear end'of said top wall, and a substantially vertical flame-retaining wall portion extending upwardly from the rear end of said top wall and in a transverse direction relative to the general direction of said sidewall flangm, said flame-retaining wall being spaced forwardly from the end of said tube at the frontend of said gap, the lower portion of said flame-retaining wall being-disposed belowthe level of the upper portion of said port for intercepting and upwardly deflecting a portion of the mixture through said gap to form a relatively small secondary flame portion.
2. In a burner, the combination comprising a mixture tube with a front end having an axial discharge port therein to discharge fuel-air mixture from said tube, a generally channel-shaped flame shaper having a substantially straight planar deflecting wall with its rear end spaced forwardly from the end of said tube and extending obliquely from rear to front across the axis of said tube at a small angle to said axis for deflecting most of the mix ture in one transverse direction to form a'main flame portion, a pair of'opposed laterally spaced sidewall flanges projecting from said deflecting wall in said one transverse direction and extending generally from rear to front along said deflecting wall to confine the portion of the mixture intercepted by said deflecting wall, said sidewall flanges having leg portions constituting rearward extensions thereof and extending rearwardly of the rear end of said deflecting wall and terminating in mounting portions secured to said mixture tube, said leg portions having a gap therebetween opening upwardly between said front end of said tube and said rear end of said deflecting wall, and a flame-retaining wall connected to said rear end of said deflecting wall atthe front end of said gap and extending from said deflecting wall in a direction generally opposite to said one transverse direction,
said flame-retaining wall extending transversely to the general direction of said sidewall flanges and being spaced forwardly from the front end of said tube and opposite a portion of said port for intercepting and deflecting a portion of the mixture through said gap between said flame-retaining wall and said tube to form a relatively small secondary flame portion.
3. In a burner, the combination comprising a mixture tube with a front end having an axial discharge port therein to discharge fuel-air mixture from said tube, a generally channel-shaped flame shaper having a substantially straight planar deflecting wall with its rear end spaced forwardly from the end of said tube and extending obliquely from rear to front across the axis of said tube at a small angle to said axis for deflecting most of the mixture in one transverse direction to form a main flame portion, a pair of opposed laterally spaced sidewall flanges projecting from said deflecting wall in said one transverse direction and extending generally from rear to front along said deflecting wall to confine the portion of the mixture intercepted by said deflecting wall, said sidewall flanges converging progressively to a substantial extent toward each other in a forward direction, said sidewall flanges having leg portions constituting rearward extensions thereof and extending rearwardly of the rear end of said deflecting wall and terminating in mounting portions secured to said mixture tube, said leg portions having a gap therebetween opening upwardly between said front end of said tube and said rear end ofsaid deflecting wall, and a flameretaining wall connected to said rear end of said deflecting wall at the front end of said gap and extending from said deflecting wall in a direction generally opposite to said one transverse direction, said flame-retaining Wall extending transversely to thegeneral'direction of said sidewall flanges and being spaced forwardly from the front end of said tube and opposite a portion of said port for'intercepting and deflecting a portion of the mixture through said gap between said flame-retaining wall and said tube to form a relatively small secondary flame portion.
4. In a burner, the combination comprising a generally horizontal mixture tube with a front end having an axial discharge port therein to discharge fuel-air mixture from said tube, a generally inverted channel-shaped flame shaper having a substantially straight planar top-wall with its rear end spaced forwardly from the end-of said'tube and inclined downwardly between its rear and front ends across the axis of said tube for deflecting most of the mixture downwardly to form a main flame portion, a pair of opposed laterally spaced sidewall flanges projecting downwardly from said top wall and extending generally from rear to front along said top wall to confine the portion of the mixture intercepted by said top wall, said sidewall flanges having leg portions constituting rearward extensions thereof and extending rearwardly of the rear end of said top wall and terminating in mounting portions secured to said mixture tube, said leg portions having a gap therebetween opening upwardly between said front end of said tube and said rear end of said top wall, and a flame-retaining wall connected to the rear end of said top wall at the front end-of said gap and extending upwardly from said top Wall and in a transverse direction relative to the general directionof said sidewall flanges, said flame-retaining wall being spaced forwardly from the front end of said tube and opposite a portion of said port for carrying a portion of-the mixture upwardly through said gap to form a relatively small upwardly directed secondary flame portion.
5. A flame shaper for use on the front end of a mixture tube of a burner, said flame shaper comprising a generally inverted channel-shaped structure having a pair of spaced opposed substantially flat generally vertical sidewall flanges extending generally in a rear-to-front direction with a substantially flat planar top wall extending therebetween and inclined downwardly between its rear and front endsfor deflecting fuel-air mixture downwardly to form a main flame-portion, said sidewall flanges having leg portions constituting rearward extensions thereof and extending rearwardly of the rear end of said top wall, said leg portions having mounting portions at their rear ends for mounting said flame shaper on a mixture tube with the rear end of said topwall spaced forwardly therefrom, said leg portions having an upwardly opening gap therebetween with the rear end of said top Wall at the front end of said gap, and a flame-retaining wall projecting upwardly from the rear end of said top wall at the front end of said gap and extending transversely to the general direction of said sidewall flanges for carrying a portion of the mixture-upwardly through said gap to form an upwardly directed relatively small secondary flame portion, said sidewall flanges converging progressively toward each other to a substantial extent in a forward direction.
References Cited in the file of this patent UNITED STATES PATENTS D. 128,490 Hayes July 29, 1941 1,618,269 Cox Feb. 22, 1927 1,691,607 Kerr Nov. 13, 1928 1,801,459 Slauter Apr. 21, 1931
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Application Number | Priority Date | Filing Date | Title |
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US647302A US2999535A (en) | 1957-03-20 | 1957-03-20 | Flame shapers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US647302A US2999535A (en) | 1957-03-20 | 1957-03-20 | Flame shapers |
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US2999535A true US2999535A (en) | 1961-09-12 |
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US647302A Expired - Lifetime US2999535A (en) | 1957-03-20 | 1957-03-20 | Flame shapers |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3146823A (en) * | 1961-03-27 | 1964-09-01 | Honeywell Regulator Co | Pilot burner generator |
US3367572A (en) * | 1962-06-15 | 1968-02-06 | Robertshaw Controls Co | Pilot and burner valve construction and method for an oven and the like |
FR2305671A1 (en) * | 1975-03-24 | 1976-10-22 | Gruere Charles | Preheating burner ring for pipelines - has gas supply ring extending around pipeline and supplying burners directed towards pipeline |
US20050016520A1 (en) * | 2003-07-16 | 2005-01-27 | Bsh Bosch Und Siemens Hausgerate Gmbh | Heating configuration for a drier |
US20090165321A1 (en) * | 2007-12-27 | 2009-07-02 | Daewoo Electronics Corporation | Dryer having gas heater |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1618269A (en) * | 1925-12-16 | 1927-02-22 | Stephen A D Cox | Gas-burner deflector |
US1691607A (en) * | 1926-04-02 | 1928-11-13 | Cleveland Gas Burner & Applian | Gas burner |
US1801459A (en) * | 1927-05-13 | 1931-04-21 | Charles H Slauter | Gas burner |
-
1957
- 1957-03-20 US US647302A patent/US2999535A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1618269A (en) * | 1925-12-16 | 1927-02-22 | Stephen A D Cox | Gas-burner deflector |
US1691607A (en) * | 1926-04-02 | 1928-11-13 | Cleveland Gas Burner & Applian | Gas burner |
US1801459A (en) * | 1927-05-13 | 1931-04-21 | Charles H Slauter | Gas burner |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3146823A (en) * | 1961-03-27 | 1964-09-01 | Honeywell Regulator Co | Pilot burner generator |
US3367572A (en) * | 1962-06-15 | 1968-02-06 | Robertshaw Controls Co | Pilot and burner valve construction and method for an oven and the like |
FR2305671A1 (en) * | 1975-03-24 | 1976-10-22 | Gruere Charles | Preheating burner ring for pipelines - has gas supply ring extending around pipeline and supplying burners directed towards pipeline |
US20050016520A1 (en) * | 2003-07-16 | 2005-01-27 | Bsh Bosch Und Siemens Hausgerate Gmbh | Heating configuration for a drier |
DE10332339A1 (en) * | 2003-07-16 | 2005-02-03 | BSH Bosch und Siemens Hausgeräte GmbH | Heating arrangement for a dryer |
US20090165321A1 (en) * | 2007-12-27 | 2009-07-02 | Daewoo Electronics Corporation | Dryer having gas heater |
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