IMPROVEMENTS IN AND RELATING TO PROXIMITY SWITCHES - Patent 0619893

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EP 0 619 893 A1

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(43)	Date of publication:
	19.10.1994 Bulletin 1994/42

(21)	Application number: 93902772.0

(22)	Date of filing: 28.12.1992

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International Patent Classification (IPC):

H03K 17/ 95^{( . )}

(86)	International application number:
	PCT/US1992/011232

(87)	International publication number:
	WO 1993/013469 (08.07.1993 Gazette 1993/16)

(84)	Designated Contracting States:
	DE FR

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Priority:

31.12.1991 GB 19910027571

(71)	Applicant: SQUARE D COMPANY
	Palatine, IL 60067 (US)

(72)	Inventors:
	CALDER, Douglas, William, Hudson Hungerford Berkshire RG17 0DQ (GB) BIZLEY, Arthur, Janes 43 Saffron Close Swindon Wiltshire SN47 7JB (US)

(74)	Representative: Fitzpatrick, Alan James, et al
	Fitzpatricks, 4 West Regent Street Glasgow G2 1RS, Scotland Glasgow G2 1RS, Scotland (GB)

(54)	IMPROVEMENTS IN AND RELATING TO PROXIMITY SWITCHES