EP0465140A3 - Non-clogging high efficiency plasma torch - Google Patents

Non-clogging high efficiency plasma torch Download PDF

Info

Publication number: EP0465140A3
Authority: EP; European Patent Office
Prior art keywords: high efficiency; plasma torch; efficiency plasma; clogging high; clogging
Prior art date: 1990-07-02
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Granted

Application number

EP19910305854

Other versions

EP0465140A2 (en

EP0465140B1 (en

Inventor

Charles Bernard Wolf

Raymond Frances Taylor, Jr.

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Westinghouse Electric Corp

Original Assignee

Westinghouse Electric Corp

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1990-07-02

Filing date

1991-06-28

Publication date

1992-07-08

1991-06-28 Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp

1992-01-08 Publication of EP0465140A2 publication Critical patent/EP0465140A2/en

1992-07-08 Publication of EP0465140A3 publication Critical patent/EP0465140A3/en

1997-01-29 Application granted granted Critical

1997-01-29 Publication of EP0465140B1 publication Critical patent/EP0465140B1/en

2011-06-28 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Classifications

- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
- H05H1/32—Plasma torches using an arc
- H05H1/34—Details, e.g. electrodes, nozzles
- H05H1/40—Details, e.g. electrodes, nozzles using applied magnetic fields, e.g. for focusing or rotating the arc
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
- H05H1/32—Plasma torches using an arc
- H05H1/34—Details, e.g. electrodes, nozzles
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
- H05H1/32—Plasma torches using an arc
- H05H1/34—Details, e.g. electrodes, nozzles
- H05H1/3431—Coaxial cylindrical electrodes
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
- H05H1/28—Cooling arrangements

Landscapes

Physics & Mathematics (AREA)
Engineering & Computer Science (AREA)
Plasma & Fusion (AREA)
Spectroscopy & Molecular Physics (AREA)
Plasma Technology (AREA)
Gas Burners (AREA)

EP91305854A 1990-07-02 1991-06-28 Non-clogging high efficiency plasma torch Expired - Lifetime EP0465140B1 (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
US54726690A	1990-07-02	1990-07-02
US547266		1990-07-02

Publications (3)

Publication Number	Publication Date
EP0465140A2 EP0465140A2 (en)	1992-01-08
EP0465140A3 true EP0465140A3 (en)	1992-07-08
EP0465140B1 EP0465140B1 (en)	1997-01-29

Family

ID=24184008

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP91305854A Expired - Lifetime EP0465140B1 (en)	1990-07-02	1991-06-28	Non-clogging high efficiency plasma torch

Country Status (4)

Country	Link
EP (1)	EP0465140B1 (en)
JP (1)	JPH04227405A (en)
CA (1)	CA2044991A1 (en)
DE (1)	DE69124429T2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN102364994A (en) *	2011-09-28	2012-02-29	南京创能电力科技开发有限公司	Cathode Arc Controller for Low Temperature Plasma Generator

Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3307011A (en) *	1963-08-29	1967-02-28	Union Carbide Corp	Method for increasing electrode life
US4099958A (en) *	1976-04-09	1978-07-11	Bethlehem Steel Corporation	Method of producing vanadium
US4668853A (en) *	1985-10-31	1987-05-26	Westinghouse Electric Corp.	Arc-heated plasma lance

1991
- 1991-06-19 CA CA002044991A patent/CA2044991A1/en not_active Abandoned
- 1991-06-28 DE DE69124429T patent/DE69124429T2/en not_active Expired - Fee Related
- 1991-06-28 EP EP91305854A patent/EP0465140B1/en not_active Expired - Lifetime
- 1991-07-02 JP JP3189277A patent/JPH04227405A/en active Pending

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3307011A (en) *	1963-08-29	1967-02-28	Union Carbide Corp	Method for increasing electrode life
US4099958A (en) *	1976-04-09	1978-07-11	Bethlehem Steel Corporation	Method of producing vanadium
US4668853A (en) *	1985-10-31	1987-05-26	Westinghouse Electric Corp.	Arc-heated plasma lance

Also Published As

Publication number	Publication date
DE69124429T2 (en)	1997-08-14
CA2044991A1 (en)	1992-01-03
DE69124429D1 (en)	1997-03-13
EP0465140A2 (en)	1992-01-08
EP0465140B1 (en)	1997-01-29
JPH04227405A (en)	1992-08-17

Publication	Publication Date	Title
DE69326624D1 (en)	1999-11-04	PLASMA TORCH
DE69418894D1 (en)	1999-07-08	PLASMA TORCH
DE4490957T1 (en)	1997-07-31	Plasma torch
GB2246424B (en)	1994-02-16	High efficiency purge system
DE69224183D1 (en)	1998-02-26	PLASMA CUTTING TORCH
GB2248198B (en)	1994-08-31	High efficiency liquid/liquid hydrocyclone
DE69311271D1 (en)	1997-07-10	Plasma cutting torch
EP0339563A3 (en)	1990-01-10	Transfer-type plasma torch
GB8715085D0 (en)	1987-08-05	Air plasma arc torch
GB2248140B (en)	1994-06-01	Gas laser
EP0480034A4 (en)	1992-06-24	Plasma torch
GB9404053D0 (en)	1994-04-20	High efficiency laser
DE69408326D1 (en)	1998-03-05	PLASMA TORCH
EP0577261A3 (en)	1994-06-01	High efficiency infrared source
GB9025695D0 (en)	1991-01-09	Gas plasma generating system
EP0515975A3 (en)	1993-05-12	High enthalpy plasma torch
GB2241318B (en)	1992-08-26	Torch
EP0465140A3 (en)	1992-07-08	Non-clogging high efficiency plasma torch
KR940007300U (en)	1994-04-12	Plasma arc power supply
GB9225379D0 (en)	1993-01-27	High efficiency airfoil-hydrofoil
CS53990A2 (en)	1991-08-13	Plasma burner
RU1833267C (en)	1993-08-07	Plasma generator
GB2245352B (en)	1994-02-23	Torch
PL292696A2 (en)	1992-09-21	Plasma source
PL290072A2 (en)	1992-01-27	Plasma source

Legal Events

Date	Code	Title	Description
1991-11-22	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1992-01-08	AK	Designated contracting states	Kind code of ref document: A2 Designated state(s): BE DE FR GB IT NL
1992-05-15	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1992-07-08	AK	Designated contracting states	Kind code of ref document: A3 Designated state(s): BE DE FR GB IT NL
1993-01-27	17P	Request for examination filed	Effective date: 19921113
1995-03-22	17Q	First examination report despatched	Effective date: 19950201
1996-02-07	GRAG	Despatch of communication of intention to grant	Free format text: ORIGINAL CODE: EPIDOS AGRA
1996-06-06	GRAH	Despatch of communication of intention to grant a patent	Free format text: ORIGINAL CODE: EPIDOS IGRA
1996-12-06	GRAH	Despatch of communication of intention to grant a patent	Free format text: ORIGINAL CODE: EPIDOS IGRA
1996-12-13	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1997-01-29	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): BE DE FR GB IT NL
1997-02-21	ET	Fr: translation filed
1997-03-13	REF	Corresponds to:	Ref document number: 69124429 Country of ref document: DE Date of ref document: 19970313
1997-04-17	ITF	It: translation for a ep patent filed
1997-12-05	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1997-12-05	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1998-01-21	26N	No opposition filed
1999-03-22	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: NL Payment date: 19990322 Year of fee payment: 9
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