COMBINED ALARM AND BACK-FLOW PREVENTION ARRANGEMENT FOR FIRE SUPPRESSION SPRINKLER SYSTEM - Patent 0445122

(19)

(11)

EP 0 445 122 A1

(12)

(43)	Date of publication:
	11.09.1991 Bulletin 1991/37

(21)	Application number: 89910800.0

(22)	Date of filing: 20.09.1989

(51)

International Patent Classification (IPC):

A62C 35/ 68^{( . )}
F16K 15/ 00^{( . )}

E03C 1/ 10^{( . )}

(86)	International application number:
	PCT/US1989/004008

(87)	International publication number:
	WO 1990/003201 (05.04.1990 Gazette 1990/08)

(84)	Designated Contracting States:
	AT BE CH DE FR GB IT LI LU NL SE

(30)

Priority:

21.09.1988 US 19880247073
29.09.1988 US 19880250834
10.11.1988 US 19880269314
10.04.1989 US 19890335381

(71)	Applicant: BACK-FLO ALARM VALVE CO. INC.
	West Chester, PA 19380 (US)

(72)	Inventor:
	McHUGH, George, J. Broomall, PA 19008 (US)

(74)	Representative: Jenkins, Peter David, et al
	PAGE WHITE & FARRER 54 Doughty Street London WC1N 2LS London WC1N 2LS (GB)

(54)	COMBINED ALARM AND BACK-FLOW PREVENTION ARRANGEMENT FOR FIRE SUPPRESSION SPRINKLER SYSTEM