Two stage conical liquid ring pump having removable manifold, shims and first and second stage head o'ring receiving boss

(19)

(11)

EP 1 892 419 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	12.08.2009 Bulletin 2009/33

(43)	Date of publication A2:
	27.02.2008 Bulletin 2008/09

(21)	Application number: 07253024.9

(22)	Date of filing: 01.08.2007

(51)

International Patent Classification (IPC):

F04C 19/00^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
	Designated Extension States:
	AL BA HR MK RS

(30)

Priority:

11.08.2006 US 822147 P
17.11.2006 US 561186

(71)	Applicant: Gardner Denver Nash LLC
	Trumbull, CT 06611 (US)

(72)	Inventors:
	Lengyel, Louis Fairfield, Connecticut 06825 (US) Shenoi, Ramesh B. Orangeburg, New York 10962 (US) Dudeck, Carl G. Newtown, Connecticut 06470 (US)

(74)	Representative: Neill, Alastair William et al
	Appleyard Lees 15 Clare Road Halifax West Yorkshire HX1 2HY Halifax West Yorkshire HX1 2HY (GB)

(54)	Two stage conical liquid ring pump having removable manifold, shims and first and second stage head o'ring receiving boss

(57) A first head of a liquid ring pump has an inlet, an outlet, a shaft receiving aperture extending there through, and an internal end. The internal end includes a boss with a side wall. The boss is received by a pump body. An interstage manifold is removeably coupled to the pump without being integral with or connected to the pump body. An o-ring can be located between a side wall of the boss and an internal side wall of the body.

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