Donaldson Company, Inc. Patents

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Donaldson Company, Inc. Patents

Assignee:

Donaldson Company, Inc.

Address:

Minneapolis, MN

No. of patents:

553

Patents:

1 2 3 4 5 6 7 8 9 10 11 12

Patent Number	Title Of Patent	Date Issued
RE32381	Cartridge centrifuge	March 24, 1987
The disclosure is directed to a cartridge type centrifuge for separating particulate matter from fluids. The cartridge comprises a plurality of flow stages, each of which consists of alternately wrapped layers of flat and corrugated paper defining a plurality of vertical passages, the
RE32185	Self-cleaning pulsed air cleaner	June 17, 1986
An air cleaning method and apparatus in which air to be cleaned is drawn toward and through a filter (44, 45) along a normal path having a first component extending from a first to a second end of the filter, so as to initially collect particulate matter on the filter, in which momentary
RE30042	Exhaust system connector seal	July 10, 1979
A method and apparatus for joining two tubular members in a strong, leak-proof fashion in which a band of ductile metal is passed around the adjacent ends of the members and circumferentially stressed beyond its elastic limit to conform intimately with the outer surfaces of the members
D601238	Filter cartridge	September 29, 2009

D600790	Filter cartridge	September 22, 2009

D545396	Filter element having elliptical shape	June 26, 2007

D520619	Air cleaner for engine	May 9, 2006

D513314	Filter element	December 27, 2005

D511377	Inlet air filter hood module for gas turbine systems	November 8, 2005

D506539	Filter cartridge	June 21, 2005

D499177	Filter element having oval shape	November 30, 2004

D497202	Filter for engine	October 12, 2004

D485339	Air filter element having attached cover member	January 13, 2004

D484584	Filter element for engine	December 30, 2003

D483459	Air filter element for engine	December 9, 2003

D481101	Filter element	October 21, 2003

D477659	Air filter element for engine air cleaner	July 22, 2003

D476725	Coalescer filter having baffle plate	July 1, 2003

D475612	Exhaust system clamp	June 10, 2003

D475129	Radial seal filter element with press-on fin structure	May 27, 2003

D473637	Fluted filter element	April 22, 2003

D471623	Safety filter element for engine air cleaner	March 11, 2003

D470216	Filter element	February 11, 2003

D468007	Pleat spacer for air filter	December 31, 2002

D467654	Air filter element having attached cover member	December 24, 2002

D466602	Filter element having sealing system	December 3, 2002

D464129	Filter element with pinched seal	October 8, 2002

D462117	Air cleaner cover	August 27, 2002

D461884	Filter element having sealing system	August 20, 2002

D461003	Filter element having sealing system	July 30, 2002

D460169	Filter element having an inlet grid	July 9, 2002

D455826	Filter Apparatus	April 16, 2002

D455483	Filter frame holding flexible, irregular media	April 9, 2002

D451790	Bent bolt clamp	December 11, 2001

D450828	Fluted filter element having a handle	November 20, 2001

D450827	Filter element having sealing system	November 20, 2001

D450376	Air cleaner	November 13, 2001

D447549	Filter frame holding flexible, irregular media	September 4, 2001

D444219	Centerpiece for filter element	June 26, 2001

D442538	Mounting arrangement for muffler	May 22, 2001

D440645	Body member for a housing for an air cleaner	April 17, 2001

D440293	Coalescer filter	April 10, 2001

D439963	Panel filter	April 3, 2001

D439962	Coalescer filter element with screen	April 3, 2001

D438214	Filter element	February 27, 2001

D437402	Filter element with centerpiece	February 6, 2001

D437401	In-line air cleaner	February 6, 2001

D436028	U-bolt clamp	January 9, 2001

D434360	Mounting arrangement for muffler	November 28, 2000

D428128	Conical filter	July 11, 2000