US Patent Application No: 2009/0092,505

Number of patents in Portfolio can not be more than 2000

DUAL DIAPHRAGM PUMP ASSEMBLY FOR A SANITATION SYSTEM

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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, MI59

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 22 119
Meyer, Steven A Whitmore Lake , US 1 1

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (2)
* 6,126,419 Caustic pumping apparatus 1 1998
* 6,354,817 Pressurized air supplying device for vehicle 2 2000
 
SANKYO SEIKI MFG. CO., LTD. (1)
* 2005/0271,525 Pump device 2 2005
 
NESTEC S.A. (1)
* 5,679,809 Concentrate of polyunsaturated fatty acid ethyl esters and preparation thereof 8 1995
 
KNF Neuberger GmbH (1)
* 5,551,843 Pump with a driving motor and a case 13 1994
 
MCGEHEE, PAUL (1)
* 4,931,000 Double acting diaphragm air pump 15 1989
 
SIMMONS DEVELOPMENT, LLC (1)
* 2003/0012,668 Pneumatic reciprocating pump 0 2002
 
SOVEREIGN BANK (1)
* 6,082,979 Air pump for vacuum toilet systems 10 1997
 
WARREN RUPP, INC. (1)
* 5,851,109 Spacer and shim assembly for fluid powered diaphragm pumps 7 1997
 
XYLEM IP HOLDINGS LLC (1)
* 7,013,793 Diaphragm mounting method for a diaphragm pump 5 2004
 
Divwatt (Proprietary) Limited (1)
* 5,836,751 Reciprocating piston pump 9 1996
 
STA-RITE INDUSTRIES, LLC (1)
* 2005/0191,190 Double action simplex plunger/diaphragm pump 1 2004
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
ALMOS TECHNOLOGIES PTY. LTD. (2)
* 9,115,486 Pump assembly for a marine toilet and toilet pump connection system 0 2011
* 2013/0205,489 Pump Assembly for a Marine Toilet and Toilet Pump Connection System 0 2011
* Cited By Examiner