Patent US4388514A successfully refreshed from Google Patents.
US4388514A
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US
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Method for collecting process generated fume and/or slag
Assignee: Arcair Co
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Filing: 1981-06-01
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Granted: 1983-06-14
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Expires: 2001-06-01
Abstract
Abstract Method and system for collecting fume and/or waste particulate matter generated in a process used to surface treat, cut, gouge or join a workpiece by means of elevated temperature (e.g. electric arc). The system includes a nozzle for collecting the slag and fume. The nozzle is cooled by fluid. In addition there is a filter to separate particles and to return clean air to the ambient.
Inventors
- 👤 William J. Coughlin
- 👤 Stephen A. Hoffman
- 👤 Perry J. Rieppel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:31
CPC Classifications
B; B08; B08B; B08B15/00; B08B15/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
156 words
A method for collecting fume, solid particulate matter, molten metal and molten slag generated by operation of an air-carbon arc cutting and gouging apparatus comprising the steps of: isolating from the ambient environment an area surrounding the apparatus where fume, solid particulate matter, molten metal and molten slag is generated by the air-carbon arc cutting and gouging apparatus thus forming an atmosphere containing air, other gases, fume, solid particulate matter, molten metal and molten slag; directing said atmosphere to a withdrawal apparatus wherein an air-water mixture is directed at said atmosphere and continuously withdrawing the atmosphere inside said isolated area through withdrawal apparatus wherein said air-water mixture cools said molten metal and molten slag and entrains said solid particulate matter; separating said water and solid particulate matter, cooled molten metal and cooled molten slag from said air and other gases; and passing said air and other gases through a filter to remove any airborne particulate matter.
Claim 2
Independent Claim
156 words
A method for collecting fume, solid particulate matter, molten metal and molten slag generated by operation of an air-carbon arc cutting and gouging apparatus comprising the steps of: isolating from the ambient environment an area surrounding the apparatus where fume, solid particulate matter, molten metal and molten slag is generated by the air-carbon arc cutting and gouging apparatus thus forming an atmosphere containing air, other gases, fume, solid particulate matter, molten metal and molten slag; directing said atmosphere to a withdrawal apparatus wherein an air-water mixture is directed at said atmosphere and continuously withdrawing the atmosphere inside said isolated area through withdrawal apparatus wherein said air-water mixture cools said molten metal and molten slag and entrains said solid particulate matter; separating said water and solid particulate matter, cooled molten metal and cooled molten slag from said air and other gases; and passing said air and other gases through a filter to remove any airborne particulate matter.
Claim 3
Dependent Claim
21 words
A method according to claim 1 wherein said atmosphere cleaned of fume, fluid and slag is returned to the ambient environment.
Claim 4
Dependent Claim
21 words
A method according to claim 1 wherein said isolating step takes place in an environment adapted to absorb process generated noise.
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) | 1986-06-13 | 1986-12-13 | 1987-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-13 | 1990-12-13 | 1991-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-13 | 1994-12-13 | 1995-06-14 | $7700.00 | Window Closed / Lapsed |