Timothy Harold Grafe

US Patent:

7008465, Mar 7, 2006

Filed:

Jun 16, 2004

Appl. No.:

10/869459

Inventors:

Kristine M. Graham - Minnetonka MN, US
Timothy H. Grafe - Edina MN, US
Mark A. Gogins - Roseville MN, US

Assignee:

Donaldson Company, Inc. - Minneapolis MN

International Classification:

B03C 3/155
B03C 3/36

US Classification:

95 78, 55300, 55302, 553851, 553853, 55486, 55521, 55528, 55DIG 3, 55DIG 33, 55DIG 35, 95273, 95280, 95287, 96 67, 96 69, 96226, 2104935, 210505

Abstract:

An improved cartridge, typically in cylindrical or panel form that can be used in a dry or wet/dry vacuum cleaner. The cartridge is cleanable using a stream of service water, or by rapping on a solid object, or by using a compressed gas stream, but can provide exceptional filtering properties even for submicron particulate in the household or industrial environment. The cartridge has a combination of nanofiber filtration layer on a substrate. The nanofiber and substrate are engineered to obtain a maximum efficiency at reasonable pressure drop and permeability. The improved cartridge constitutes at least a substrate material and at least a layer including a non-woven, fine fiber separation layer.

US Patent:

7717975, May 18, 2010

Filed:

Feb 13, 2006

Appl. No.:

11/354301

Inventors:

Veli E. Kalayci - Farmington MN, US
Douglas G. Crofoot - Burnsville MN, US
Timothy H. Grafe - Edina MN, US
Kristine M. Graham - Minnetonka MN, US

Assignee:

Donaldson Company, Inc. - Minneapolis MN

International Classification:

B01D 46/00

US Classification:

55486, 95487, 95489, 95524, 95527, 95528, 264145, 264175, 264DIG 48

Abstract:

A web can comprise a substantially continuous fiber mass and a separation means dispersed into the fiber. The web having a preferred thickness resulting from forming a polymer material and a particulate into a fine fiber layer can have a variety of end uses. A filtration media can include a structure comprising such a web of fine fiber and a substantial volume of particulate embodiment of the separation means. The resulting fine fiber structure provides an improved filtration medium having substantial depth, thickness, and a layered structure. The improved properties of the web results from inclusion of the separation or spacer particulate.

US Patent:

7918913, Apr 5, 2011

Filed:

Aug 17, 2009

Appl. No.:

12/542312

Inventors:

Veli E. Kalayci - Famington MN, US
Douglas G. Crofoot - Burnsville MN, US
Timothy H. Grafe - Edina MN, US
Kristine M. Graham - Minnetonka MN, US

Assignee:

Donaldson Company, Inc. - Minneapolis MN

International Classification:

B01D 46/00

US Classification:

55486, 55487, 55489, 55524, 55527, 55528, 264145, 264175, 264DIG 48

Abstract:

A web can comprise a substantially continuous fiber mass and a separation means dispersed into the fiber. The web having a preferred thickness resulting from forming a polymer material and a particulate into a fine fiber layer can have a variety of end uses. A filtration media can include a structure comprising such a web of fine fiber and a substantial volume of particulate embodiment of the separation means. The resulting fine fiber structure provides an improved filtration medium having substantial depth, thickness, and a layered structure. The improved properties of the web results from inclusion of the separation or spacer particulate.

US Patent:

8127718, Mar 6, 2012

Filed:

Apr 27, 2007

Appl. No.:

11/740972

Inventors:

Thomas Barry Hoegh - Edina MN, US
Timothy Harold Grafe - Edina MN, US

International Classification:

A01K 15/02

US Classification:

119481, 119712, 119719, 119905

Abstract:

The general goal of the present invention is to prevent damage to property resulting from the animal's separation anxiety which typically is a consequence of the pet owner's departure while minimizing the period of time the dog is confined. The most obvious objective is to restrain the animal until it calms down. A similar approach would be to reward the animal with a treat once it has calmed down. We have invented a device that incorporates an automatically releasing door of the kennel. For instance, the owner of a canine would place the dog in a kennel prior to leaving his or her residence. The owner would initiate a timer on the kennel, and the kennel door would automatically open after a pre-determined amount of time, for instance 30 minutes, or some other amount of time that was sufficient to calm the canine's emotions. After the door is automatically open, the canine would be free to exit the kennel for exercise, to access water and/or food, or otherwise explore the dwelling or its surroundings.

US Patent:

8177876, May 15, 2012

Filed:

Feb 21, 2011

Appl. No.:

13/031416

Inventors:

Veli E. Kalayci - Farmington MN, US
Douglas G. Crofoot - Burnsville MN, US
Timothy H. Grafe - Edina MN, US
Kristine M. Graham - Minnetonka MN, US

Assignee:

Donaldson Company, Inc. - Minneapolis MN

International Classification:

B01D 50/00

US Classification:

55486, 55487, 55489, 55527, 55528, 264145, 264DIG 48

Abstract:

A web can comprise a substantially continuous fiber mass and a separation means dispersed into the fiber. The web having a preferred thickness resulting from forming a polymer material and a particulate into a fine fiber layer can have a variety of end uses. A filtration media can include a structure comprising such a web of fine fiber and a substantial volume of particulate embodiment of the separation means. The resulting fine fiber structure provides an improved filtration medium having substantial depth, thickness, and a layered structure. The improved properties of the web results from inclusion of the separation or spacer particulate.

US Patent:

20040092185, May 13, 2004

Filed:

Nov 13, 2002

Appl. No.:

10/295017

Inventors:

Timothy Grafe - Edina MN, US
Kristine Graham - Minnetonka MN, US

International Classification:

B32B005/22
B32B005/02
B32B005/18

US Classification:

442/153000, 442/064000, 442/065000, 442/076000, 442/108000, 442/121000

Abstract:

A flexible wipe comprising at least one conformable non-woven layer and at least one adhered nanofiber layer can be used to remove a variety of particulate soils from planar, curved or complex surfaces. The nanofiber layer is configured onto the flexible non-woven in a fashion such that particulate of a broad particle size range is trapped by the nanofiber layer and efficiently removed from the contaminated surface. The nanofiber layer comprises a web of spun fibers that can incorporate and trap soil particles for efficient soil removal.

US Patent:

20040203306, Oct 14, 2004

Filed:

Apr 26, 2004

Appl. No.:

10/833229

Inventors:

Timothy Grafe - Edina MN, US
Kristine Graham - Minnetonka MN, US

Assignee:

Donaldson Company, Inc.

International Classification:

A47L013/17
A47L013/16
B32B027/02

US Classification:

442/189000, 442/340000, 442/341000, 442/351000, 015/209100

Abstract:

A flexible wipe, comprising at least one conformable woven or non-woven layer and at least one adhered nanofiber layer, can be used to remove a variety of particulate soils from planar, curved or complex surfaces that are contaminated by small particulate soil. The nanofiber layer is configured onto the flexible non-woven in a fashion such that particulate of a broad particle size range is trapped or incorporated by the nanofiber layer and efficiently removed from the contaminated surface. The nanofiber layer comprises a web of spun fibers that can incorporate and trap soil particles for efficient soil removal.

US Patent:

20040223040, Nov 11, 2004

Filed:

Apr 26, 2004

Appl. No.:

10/832533

Inventors:

Kristine Graham - Minnetonka MN, US
Timothy Grafe - Edina MN, US

Assignee:

Donaldson Company, Inc.

International Classification:

B41J002/01
B41J002/21

US Classification:

347/105000

Abstract:

The formation of a microporous layer or coating on sheet or paper stock using fine fiber can provide a writing surface that accepts ink, particularly ink jet ink, to obtain a crisp and sharp image. Such images can be alpha numeric or graphic images derived from printing, photography or produced from graphics software.