US3828701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Incinerator
Assignee: PYROCOM Inc
•
Filing: 1973-05-29
•
Granted: 1974-08-13
•
Expires: 1993-05-29
Abstract
Abstract The present invention relates to a commercial or industrial type incinerator and more particularly to an incinerator which is capable of disposing of combustible waste containing a substantial percentage of plastic materials without creating attendant atmospheric pollutants.
Inventors
- 👤 R Atkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:00
CPC Classifications
F; F23; F23G; F23G7/00; F23G7/12; F23G5/00; F23G5/08; F23G5/14; F23G5/16
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
133 words
An improved incinerator for consuming combustible wastes which include a significant percentage of plastic or other synthetic materials including: first stage combustion means for converting the wastes to a gaseous form; means for controlling the rate of combustion in the first stage to limit the temperature therein below 1,000*F; second stage combustion means for consuming the gases from the non-plastic wastes and initiating combustion of the gases from the plastic wastes; means for injecting excess oxygen into the second stage means; means for creating turbulence within the flow of gases from the second stage means to ensure thorough mixing of the gases and excess oxygen; third stage combustion means including an oxidizing flame front; and means for accelerating the gaseous mixture from the second stage into the flame front at an obtuse angle.
Claim 2
Dependent Claim
133 words
An improved incinerator for consuming combustible wastes which include a significant percentage of plastic or other synthetic materials including: first stage combustion means for converting the wastes to a gaseous form; means for controlling the rate of combustion in the first stage to limit the temperature therein below 1,000*F; second stage combustion means for consuming the gases from the non-plastic wastes and initiating combustion of the gases from the plastic wastes; means for injecting excess oxygen into the second stage means; means for creating turbulence within the flow of gases from the second stage means to ensure thorough mixing of the gases and excess oxygen; third stage combustion means including an oxidizing flame front; and means for accelerating the gaseous mixture from the second stage into the flame front at an obtuse angle.
Claim 3
Dependent Claim
63 words
An improved incinerator as set forth in claim 1 wherein; the third stage combustion means is an elongated cylindrical chamber with an oxidizing flame front extending generally radially thereof; and means for accelerating the gaseous mixture from the second stage and discharging it tangentially of the chamber to create a spiral movement of the gases through the flame front and within the chamber.
Claim 4
Dependent Claim
74 words
An improved incinerator as set forth in claim 2 wherein: the cylindrical chamber is positioned with its longitudinal axis extending vertically; the flame front is located adjacent one end of the chamber; the means for accelerating and discharging the gases is located adjacent the flame front; and means is provided at the opposite end of the cylindrical chamber for withdrawing the products of combustion from the chamber and discharging them into an exhaust stack.
Claim 5
Dependent Claim
89 words
An improved incinerator as set forth in claim 1 wherein: the third stage combustion means includes two generally cylindrical members positioned in concentric relation to define an annular passageway between the two and a cylindrical chamber within the inner member; means for discharging the secondary products of combustion through the means for creating turbulence into the annular passageway; and the means for accelerating the gaseous mixture from the second stage includes a series of ports extending through the inner member and connecting the annular passageway with the cylindrical cHamber.
Claim 6
Dependent Claim
50 words
An improved incinerator as set forth in claim 4 wherein: the cylindrical members are vertically positioned on a base with a top member sealing the upper end of the annular passageway and the cylindrical chamber; the flame front is located near the base; and the ports surround the flame front.
References Cited (Backward Citations)
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US3490395A
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US3605654A
Cited
US3645218A
Cited
US3680500A
Cited
US3736888A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |