Improvements to rotary pumps

(19)

(11)

EP 0 984 143 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	10.01.2001 Bulletin 2001/02

(43)	Date of publication A2:
	08.03.2000 Bulletin 2000/10

(21)	Application number: 99306909.5

(22)	Date of filing: 31.08.1999

(51)	International Patent Classification (IPC)⁷: F01P 5/10, F04D 5/00, F04D 13/02

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
	Designated Extension States:
	AL LT LV MK RO SI

(30)

Priority:

03.09.1998 GB 9819261

(71)	Applicant: CONCENTRIC PUMPS LIMITED
	Birmingham B24 8HW (GB)

(72)	Inventor:
	Tebby, Stephen Walker Leamington Spa, Warwickshire CV31 1JS (GB)

(74)	Representative: Barnfather, Karl Jon, Dr. et al
	Withers & Rogers, Goldings House, 2 Hays Lane London SE1 2HW London SE1 2HW (GB)

(54)	Improvements to rotary pumps

(57) A coolant pump for an I.C. engine comprises a pump cavity housing an impeller (30) rotatable about an axis (12), the impeller axis (12) being located coaxially with the rotational axis (12) of the crankshaft of the engine.

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