GB2329981B - Electrical control systems - Google Patents

Electrical control systems

Info

Publication number: GB2329981B
Authority: GB; United Kingdom
Prior art keywords: control systems; electrical control; electrical; systems; control
Prior art date: 1997-10-02
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.): Expired - Lifetime

Application number

GB9720974A

Other versions

GB2329981A (en

GB9720974D0 (en

Inventor

Douglas Robert Taylor

Graham Ernest Brooks

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.)

Individual

Original Assignee

Individual

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.)

1997-10-02

Filing date

1997-10-02

Publication date

2002-05-01

1997-10-02 Application filed by Individual filed Critical Individual

1997-10-02 Priority to GB9720974A priority Critical patent/GB2329981B/en

1997-12-03 Publication of GB9720974D0 publication Critical patent/GB9720974D0/en

1999-04-07 Publication of GB2329981A publication Critical patent/GB2329981A/en

2002-05-01 Application granted granted Critical

2002-05-01 Publication of GB2329981B publication Critical patent/GB2329981B/en

2017-10-02 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Classifications

- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/0019—Circuit arrangements
- H05B3/0023—Circuit arrangements for heating by passing the current directly across the material to be heated

GB9720974A 1997-10-02 1997-10-02 Electrical control systems Expired - Lifetime GB2329981B (en)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
GB9720974A GB2329981B (en)	1997-10-02	1997-10-02	Electrical control systems

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB9720974A GB2329981B (en)	1997-10-02	1997-10-02	Electrical control systems

Publications (3)

Publication Number	Publication Date
GB9720974D0 GB9720974D0 (en)	1997-12-03
GB2329981A GB2329981A (en)	1999-04-07
GB2329981B true GB2329981B (en)	2002-05-01

Family

ID=10819973

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB9720974A Expired - Lifetime GB2329981B (en)	1997-10-02	1997-10-02	Electrical control systems

Country Status (1)

Country	Link
GB (1)	GB2329981B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE102008042117B4 (en) *	2008-09-15	2011-07-28	Schott Ag, 55122	Melting unit and method for DC control of a smelting unit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2053890A (en) *	1979-06-12	1981-02-11	Owens Illinois Inc	Preventing blister formation in molton glass in an electric forehaerth
GB2091006A (en) *	1980-12-05	1982-07-21	Boulting W A Ltd	Forehearth heating system using immersed electrodes

1997
- 1997-10-02 GB GB9720974A patent/GB2329981B/en not_active Expired - Lifetime

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2053890A (en) *	1979-06-12	1981-02-11	Owens Illinois Inc	Preventing blister formation in molton glass in an electric forehaerth
GB2091006A (en) *	1980-12-05	1982-07-21	Boulting W A Ltd	Forehearth heating system using immersed electrodes

Also Published As

Publication number	Publication date
GB2329981A (en)	1999-04-07
GB9720974D0 (en)	1997-12-03

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Legal Events

Date	Code	Title	Description
2017-10-25	PE20	Patent expired after termination of 20 years	Expiry date: 20171001