Dual diaphragm pump assembly for a sanitation system

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8529223
APP PUB NO 20090092505A1
SERIAL NO

12245051

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A pump assembly includes a housing defining a working chamber, a water pump chamber and a waste pump chamber. A first diaphragm separates the water pump chamber and the working chamber. A second diaphragm separates the waste pump chamber and the working chamber. A common driver member interconnects the first diaphragm and the second diaphragm. Movement of the driven member to a first position creates a positive pressure in the water pump chamber and a negative pressure in the waste pump chamber. Movement of the driven member to a second position creates a negative pressure in the water pump chamber and a positive pressure in the waste pump chamber.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
THETFORD CORPORATIONANN ARBOR, MI53

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cohoon, William R Canton, US 2 6
Grech, George Garden City, US 22 126
Meyer, Steven A Whitmore Lake, US 1 1

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (2)
6126419 Caustic pumping apparatus 1 1998
6354817 Pressurized air supplying device for vehicle 2 2000
 
SANKYO SEIKI MFG. CO., LTD. (1)
2005/0271,525 Pump device 2 2005
 
Abel GmbH & Co. Handels-und Verwaltungsgesllschaft (1)
5649809 Crankshaft and piston rod connection for a double diaphragm pump 49 1995
 
KNF Neuberger GmbH (1)
5551843 Pump with a driving motor and a case 14 1994
 
MCGEHEE, PAUL (1)
4931000 Double acting diaphragm air pump 15 1989
 
SOVEREIGN BANK (1)
6082979 Air pump for vacuum toilet systems 11 1997
 
WARREN RUPP, INC. (1)
5851109 Spacer and shim assembly for fluid powered diaphragm pumps 7 1997
 
XYLEM IP HOLDINGS LLC (1)
7013793 Diaphragm mounting method for a diaphragm pump 5 2004
 
Divwatt (Proprietary) Limited (1)
5836751 Reciprocating piston pump 10 1996
 
STA-RITE INDUSTRIES, LLC (1)
2005/0191,190 Double action simplex plunger/diaphragm pump 1 2004
* Cited By Examiner

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