ACTIVE SOUND AND/OR VIBRATION CONTROL - Patent 0470153

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(11)

EP 0 470 153 A1

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(43)	Date of publication:
	12.02.1992 Bulletin 1992/07

(21)	Application number: 90907216.0

(22)	Date of filing: 20.04.1990

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International Patent Classification (IPC):

F01N 1/ 00^{( . )}
G05B 13/ 02^{( . )}
G10K 11/ 178^{( . )}

F16F 15/ 02^{( . )}
G05D 19/ 02^{( . )}

(86)	International application number:
	PCT/GB1990/000617

(87)	International publication number:
	WO 1990/013108 (01.11.1990 Gazette 1990/25)

(84)	Designated Contracting States:
	DE ES FR IT SE

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Priority:

25.04.1989 GB 19890009433

(71)	Applicant: ACTIVE NOISE AND VIBRATION TECHNOLOGIES INC.
	Phoenix, AZ 85040 (US)

(72)	Inventors:
	EATWELL, Graham, Paul Cambridge CB3 7NZ (GB) DORLING, Christopher, Mark Cambridge CB4 2QR (GB) HODSON, William, Richard Cambridge CB1 3QE (GB)

(74)	Representative: Nash, Keith Wilfrid
	KEITH W. NASH & Co. Pearl Assurance House 90-92 Regent Street Cambridge CB2 1DP Cambridge CB2 1DP (GB)

(54)	ACTIVE SOUND AND/OR VIBRATION CONTROL