US3910494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valveless combustion apparatus
Assignee: Southwest Research Institute
•
Filing: 1974-02-21
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Granted: 1975-10-07
•
Expires: 1994-02-21
Abstract
Abstract Valveless combustion apparatus are disclosed in which a flame front from gas ignited in one part of the apparatus is utilized to ignite a charge of gas in another part of the apparatus that is open to atmosphere or other relatively low pressure. The ignition occurs before the charge of gas is dissipated from the part of the apparatus open to the lower pressure so that a high energy blast of gas can be directed from the apparatus to perform work. In one form of the combustion apparatus of this invention, the ignition provided by the flame front is progressive to provide an enhanced discharge pressure. Also, the combustion apparatus of this invention is illustrated as providing for the coating of a workpiece with a particulate material.
Inventors
- 👤 Jr Rosser B Melton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:49
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/0006
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
111 words
A combustion apparatus for generating and directing a high pressure blast of gas comprising, in combination: a housing; a first chamber in said housing having a fuel-air mixture inlet; a second chamber in said housing in communication with and adjacent said first chamber at one end, said second chamber being open at its other end to the atmosphere to form a discharge outlet for said housing; means for igniting said fuel-air mixture in said first chamber; and means extending from said first chamber into said second chamber to distribute ignited fuel-air mixture from said first chamber into said second chamber to cause combustion of a fuel-air mixture in said second chamber.
Claim 2
Dependent Claim
111 words
A combustion apparatus for generating and directing a high pressure blast of gas comprising, in combination: a housing; a first chamber in said housing having a fuel-air mixture inlet; a second chamber in said housing in communication with and adjacent said first chamber at one end, said second chamber being open at its other end to the atmosphere to form a discharge outlet for said housing; means for igniting said fuel-air mixture in said first chamber; and means extending from said first chamber into said second chamber to distribute ignited fuel-air mixture from said first chamber into said second chamber to cause combustion of a fuel-air mixture in said second chamber.
Claim 3
Dependent Claim
31 words
The combustion apparatus of claim 1 wherein said last mentioned means is a tube having spaced perforations therein extending from said first chamber into a substantial portion of said second chamber.
Claim 4
Dependent Claim
27 words
The combustion apparatus of claim 2 further including a plurality of flame holders disposed on said tube, each of said flame holders being adjacent a perforation therein.
Claim 5
Dependent Claim
23 words
The combustion apparatus of claim 3 wherein each of said flame holders is disposed at an acute angle with respect to said tube.
Claim 6
Dependent Claim
27 words
The combustion apparatus of claim 1 further including means for injecting a particulate coating material therein to be carried from said apparatus by said high pressure blast.
Claim 7
Dependent Claim
27 words
The combustion apparatus of claim 3 further including means for injecting a particulate coating material therein to be carried from said apparatus by said high pressure blast.
Claim 8
Dependent Claim
20 words
The combustion apparatus of claim 1 further including baffle means located in said first chamber for dispensing ignited gases therein.
Claim 9
Dependent Claim
50 words
The combustion apparatus of claim 1 further including means for igniting said fuel-air mixture in said second chamber to establish a moving front of ignited gas moving towards said discharge outlet, and wherein said last mentioned means provides for progressive ignition of said front as it moves toward said Outlet.
Claim 10
Dependent Claim
27 words
The combustion apparatus of claim 2 wherein said tube includes a plurality of retarder sleeves spaced along it, each of said retarder sleeves including spaced perforations therein.
Claim 11
Dependent Claim
27 words
The combustion apparatus of claim 9 further including means for injecting a particulate coating material therein to be carried from said apparatus by said high pressure blast.
Claim 12
Independent Claim
119 words
A method of generating and directing a high pressure blast of gas, comprising the steps of: charging a first zone and a second zone open to a relatively low pressure region with a combustible fuel-air mixture, said first zone and second zone being formed within an integral housing; igniting the fuel-air mixture in said first zone; and conducting said ignited mixture from said first zone into said second zone by means of a conducting means extending from said first zone to said second zone and attached to disperse said ignited mixture in order to ignite the fuel-air mixture in said second zone before it is dispersed out of said second zone to cause said high pressure blast of gas.
Claim 13
Independent Claim
119 words
A method of generating and directing a high pressure blast of gas, comprising the steps of: charging a first zone and a second zone open to a relatively low pressure region with a combustible fuel-air mixture, said first zone and second zone being formed within an integral housing; igniting the fuel-air mixture in said first zone; and conducting said ignited mixture from said first zone into said second zone by means of a conducting means extending from said first zone to said second zone and attached to disperse said ignited mixture in order to ignite the fuel-air mixture in said second zone before it is dispersed out of said second zone to cause said high pressure blast of gas.
Claim 14
Dependent Claim
26 words
The method of claim 11 further including the step of progressively igniting the fuel-air mixture in said second zone with ignited mixture from said first zone.
Claim 15
Dependent Claim
36 words
The method of claim 11 further including the step of injecting a particulate coating material into said second zone and directing the resulting high pressure blast of gas to coat a workpiece with said particulate material.
Claim 16
Dependent Claim
36 words
The method of claim 12 further including the step of injecting a particulate coating material into said second zone and directing the resulting high pressure blast of gas to coat a workpiece with said particulate material.
Claim 17
Dependent Claim
131 words
A combustion apparatus for generating and directing a high pressure blast of gas containing a quantity of a particulate coating material comprising, in combination: a housing; a first chamber in said housing having a fuel-air mixture inlet; a second chamber in said housing in communication with and adjacent said first chamber at one end, said second chamber being open at its other end to the atmosphere to form a discharge outlet for said housing; means for injecting a particulate coating material into said second chamber; means for igniting said fuel-air mixture in said first chamber; and means extending from said first chamber into said second chamber to distribute ignited fuel-air mixture from said first chamber into said second chamber to cause the combustion of a fuel-air mixture in said second chamber.
Claim 18
Dependent Claim
131 words
A combustion apparatus for generating and directing a high pressure blast of gas containing a quantity of a particulate coating material comprising, in combination: a housing; a first chamber in said housing having a fuel-air mixture inlet; a second chamber in said housing in communication with and adjacent said first chamber at one end, said second chamber being open at its other end to the atmosphere to form a discharge outlet for said housing; means for injecting a particulate coating material into said second chamber; means for igniting said fuel-air mixture in said first chamber; and means extending from said first chamber into said second chamber to distribute ignited fuel-air mixture from said first chamber into said second chamber to cause the combustion of a fuel-air mixture in said second chamber.
Claim 19
Dependent Claim
31 words
The combustion apparatus of claim 15 wherein said last mentioned means is a tube having spaced perforations therein extending from said first chamber into a substantial portion of said second chamber.
Claim 20
Dependent Claim
105 words
A combustion apparatus for generating and directing a high pressure blast of gas, comprising, in combination: a first pressure zone in which a fuel-air mixture can be ignited; a second pressure zone adapted to be charged by a fuel-air mixture and in communication with said second zone, said second zone being open to a relatively low pressure as compared to the pressure of the fuel-air mixture charging said second zone; and means extending from said first pressure zone into said second pressure zone for conducting ignited fuel-air mixture from said first zone into said second zone for igniting the fuel-air mixture in said second zone.
Claim 21
Dependent Claim
105 words
A combustion apparatus for generating and directing a high pressure blast of gas, comprising, in combination: a first pressure zone in which a fuel-air mixture can be ignited; a second pressure zone adapted to be charged by a fuel-air mixture and in communication with said second zone, said second zone being open to a relatively low pressure as compared to the pressure of the fuel-air mixture charging said second zone; and means extending from said first pressure zone into said second pressure zone for conducting ignited fuel-air mixture from said first zone into said second zone for igniting the fuel-air mixture in said second zone.
Claim 22
Dependent Claim
19 words
The combustion apparatus of claim 17 wherein said last mentioned means provides for progressive combustion in said second zone.
Claim 23
Dependent Claim
116 words
A combustion apparatus for generating and directing a high pressure blast of gas comprising, in combination: a housing; a first chamber in said housing having a fuel-air mixture inlet; a second chamber in said housing in communication with and adjacent said first chamber at one end, said second chamber being open at its other end to the atmosphere to form a discharge outlet for said housing; means for igniting sAid fuel-air mixture in said first chamber; and a tube having spaced perforations therein extending from said first chamber into said second chamber to distribute ignited fuel-air mixture from said first chamber into said second chamber to cause combustion of a fuel-air mixture into said second chamber.
Claim 24
Dependent Claim
116 words
A combustion apparatus for generating and directing a high pressure blast of gas comprising, in combination: a housing; a first chamber in said housing having a fuel-air mixture inlet; a second chamber in said housing in communication with and adjacent said first chamber at one end, said second chamber being open at its other end to the atmosphere to form a discharge outlet for said housing; means for igniting sAid fuel-air mixture in said first chamber; and a tube having spaced perforations therein extending from said first chamber into said second chamber to distribute ignited fuel-air mixture from said first chamber into said second chamber to cause combustion of a fuel-air mixture into said second chamber.
Claim 25
Dependent Claim
27 words
The combustion apparatus of claim 19 further including a plurality of flame holders disposed on said tube, each of said flame holders being adjacent a perforation therein.
Claim 26
Dependent Claim
23 words
The combustion apparatus of claim 20 wherein each of said flame holders is disposed at an acute angle with respect to said tube.
Claim 27
Dependent Claim
27 words
The combustion apparatus of claim 20 further including means for injecting a particulate coating material therein to be carried from said apparatus by said high pressure blast.
Claim 28
Dependent Claim
27 words
The combustion apparatus of claim 19 wherein said tube includes a plurality of retarder sleeves spaced along it, each of said retarder sleeves including spaced perforations therein.
Claim 29
Dependent Claim
27 words
The combustion apparatus of claim 23 further including means for injecting a particulate coating material therein to be carried from said apparatus by said high pressure blast.
Claim 30
Dependent Claim
135 words
A combustion apparatus for generating and directing a high pressure blast of gas containing a quantity of a particulate coating material comprising, in combination: a housing; a first chamber in said housing having a fuel-air mixture inlet; a second chamber in said housing in communication with and adjacent said first chamber at one end, said second chamber being open at its other end to the atmosphere to form a discharge outlet for said housing; means for injecting a particulate coating material into said second chamber; means for igniting said fuel-air mixture in said first chamber; and a tube having spaced perforations therein extending from said first chamber into a substantial portion of said second chamber to distribute ignited fuel-air mixture into said second chamber to cause combustion of a fuel-air mixture into said second chamber.
Claim 31
Dependent Claim
135 words
A combustion apparatus for generating and directing a high pressure blast of gas containing a quantity of a particulate coating material comprising, in combination: a housing; a first chamber in said housing having a fuel-air mixture inlet; a second chamber in said housing in communication with and adjacent said first chamber at one end, said second chamber being open at its other end to the atmosphere to form a discharge outlet for said housing; means for injecting a particulate coating material into said second chamber; means for igniting said fuel-air mixture in said first chamber; and a tube having spaced perforations therein extending from said first chamber into a substantial portion of said second chamber to distribute ignited fuel-air mixture into said second chamber to cause combustion of a fuel-air mixture into said second chamber.
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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) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |