US3880143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination fume oxidizer and asphalt heater
Assignee: Uip Engineered Products Corp
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Filing: 1973-02-21
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Granted: 1975-04-29
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Expires: 1993-02-21
Abstract
Abstract A combined fume oxidizer and asphalt heater which substantially reduces fumes normally associated with the production of asphalt roofing materials. These fumes are utilized to heat additional asphalt and are substantially combusted. A method is described wherein the fumes from an asphalt shingle saturation machine are directed through a burner of the gas or oil type and the combined streams of burned gases are utilized to heat asphalt material. The heat of combustion is controlled by a thermocouple and the temperature in the heating chamber by by-passing a portion of the combined combusted streams away from the heating chamber and into an exhaust duct to which the other portion of the combusted gases is directed after heating the asphalt material. A damper control means directs the portions of the combusted gases to the heating chamber or through the by-pass ducts depending upon the temperature desired in the heating chamber for heating the asphalt material.
Inventors
- 👤 Wallace L Hart
- 👤 Gordon D Vevang
- 👤 Herman J Walkowicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:39
CPC Classifications
F; F23; F23G; F23G7/00; F23G7/06; F23G7/061; F23G7/065; F23G5/00; F23G5/44; F23G5/46
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
133 words
A combined fume oxidizer and asphalt heater comprising: means defining a heating chamber; fluid conduit means disposed in said heating chamber for flowing fluids into and out of said chamber for heating said fluids; a burner element for combusting fluid fuels in fluid communication with said chamber; means to supply fluid fuel to said burner element; an intake duct in communication with said burner element; an exhaust duct open at one end with the atmosphere and at the other end with said heating chamber; a by-pass duct in fluid communication with said chamber and said exhaust duct; means to supply with force combustible flowable fumes to said intake duct for combustion by said burner element and means to regulate the flow of said combusted fumes through said by-pass duct and said heating chamber.
Claim 2
Dependent Claim
133 words
A combined fume oxidizer and asphalt heater comprising: means defining a heating chamber; fluid conduit means disposed in said heating chamber for flowing fluids into and out of said chamber for heating said fluids; a burner element for combusting fluid fuels in fluid communication with said chamber; means to supply fluid fuel to said burner element; an intake duct in communication with said burner element; an exhaust duct open at one end with the atmosphere and at the other end with said heating chamber; a by-pass duct in fluid communication with said chamber and said exhaust duct; means to supply with force combustible flowable fumes to said intake duct for combustion by said burner element and means to regulate the flow of said combusted fumes through said by-pass duct and said heating chamber.
Claim 3
Dependent Claim
41 words
The combined fume oxidizer and asphalt heater as defined in claim 1 further including an exhaust outlet duct in communication with an asphalt shingle saturating machine which conveys combustible fumes, said outlet duct secured in fluid communication with said intake duct.
Claim 4
Dependent Claim
33 words
The combined fume oxidizer and asphalt heater as defined in claim 1 wherein said means to regulate the flow of said combusted fumes is at least one damper disposed in said by-pass duct.
Claim 5
Dependent Claim
22 words
The combined fume oxidizer and asphalt heater as defined in claim 1 wherein said burner element is of the flame grid type.
Claim 6
Dependent Claim
28 words
The combined combustion fume oxidizer and asphalt heater as defined in claim 1 wherein said heating chamber includes U-shaped tubular members for conveying asphalt through the heating chamber.
Claim 7
Dependent Claim
38 words
The combined fume oxidizer and asphalt heater as defined in claim 1 wherein said means to supply with force said combustible flowable fumes is an induction type draft fan disposed between said heating chamber and said exhaust duct.
Claim 8
Dependent Claim
54 words
The combined fume oxidizer and asphalt heater as defined in claim 6 further including an intermediate conduit disposed between said heating chamber and said draft fan and including dampers in said intermediate conduit and said by-pass conduits and means to regulate said dampers including temperature sensing means operatively connected to said fluid conduit means.
Claim 9
Dependent Claim
52 words
The combined fume oxidizer and asphalt heater as defined in claim 7 further including a common conduit in communication with said by-pass conduit and said intermediate conduit and secured in fluid communication with said draft fan at the upstream side of said fan with said exhaust duct connected to the downstream side.
Claim 10
Dependent Claim
36 words
The combined fume oxidizer and asphalt heater as defined in claim 7 further including a damper in said common conduit, with said dampers in said intermediate and said by-pass conduits interconnected by means of mechanical linkage.
Claim 11
Dependent Claim
29 words
The combined fume oxidizer and asphalt heater as defined in claim 9 wherein the intake conduit is connected upstream of the burner element and upstream of the heating chamber.
Claim 12
Independent Claim
103 words
A method of combusting odorous and fume forming combustible fumes present in a fluid state while utilizing and controlling the heat of combustion comprising: directing a fluid to be heated through a conduit in a heating chamber, directing said fluid combustible fumes toward a first combustion zone, burning a fluid fuel in said combustion zone to substantially combust said combustible fumes and form a second zone of hot gases; directing a portion of said gases in said second zone toward the heating chamber for heating said fluid and directing another portion of said gases in said second zone away from said heating chamber.
Claim 13
Independent Claim
103 words
A method of combusting odorous and fume forming combustible fumes present in a fluid state while utilizing and controlling the heat of combustion comprising: directing a fluid to be heated through a conduit in a heating chamber, directing said fluid combustible fumes toward a first combustion zone, burning a fluid fuel in said combustion zone to substantially combust said combustible fumes and form a second zone of hot gases; directing a portion of said gases in said second zone toward the heating chamber for heating said fluid and directing another portion of said gases in said second zone away from said heating chamber.
Claim 14
Dependent Claim
41 words
The method of combusting odorous and fume forming combustible fumes as defined in claim 11 further including the step of directing said gases from said heating chamber and the gases directed away from the heating chamber into a common exhaust zone.
Claim 15
Dependent Claim
63 words
The method of combusting odorous and fume forming combustible fumes as defined in claim 11 wherein said gases are directed into a common zone prior to the exhaust zone and an induction force is applied in said common zone to exert a pulling force on said combustible substances to draw them through said third zone as well as away from said third zone.
Claim 16
Dependent Claim
37 words
The method of combusting odorous and fume forming combustible fumes as defined in claim 11 including passing the fluid fuel and the odorous or smoke forming combustible fumes through a flame grid prior to the combustion zone.
Claim 17
Dependent Claim
36 words
The method of combusting odorous and fume forming combustible fumes as defined in claim 14 wherein the odorous or smoke forming combustible fumes are unburned asphalt fumes which are the result of the vaporization of asphalt.
Claim 18
Dependent Claim
41 words
The method of combusting odorous and fume forming combustible fumes as defined in claim 15 wherein said odorous or smoke forming combustible fumes are directed through said combustible zone at an average rate of at least about 20 feet per second.
Claim 19
Dependent Claim
36 words
The method of combusting odorous and fume forming combustible fumes as defined in claim 16 wherein said odorous or smoke forming combustible fumes are maintained in said combustion zone for a minimum of about one-half second.
Claim 20
Dependent Claim
38 words
The method of combusting odorous and fume forming combustible fumes as defined in claim 17 wherein said odorous or smoke forming combustible fumes and said fluid fuel are combusted to effect a temperature of at least about 1400*F.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |