Donald Allen Larson

US Patent:

7329887, Feb 12, 2008

Filed:

Dec 2, 2003

Appl. No.:

10/726225

Inventors:

Gordon D. Henson - Lake Elmo MN, US
Bonnie Weiskopf Albrecht - Lake Elmo MN, US
Donald K. Larson - Cedar Park TX, US
John J. Simbal - Lakeway TX, US
Michael A. Meis - Stillwater MN, US
Michael E. Griffin - Maplewood MN, US
Bruce R. Broyles - Oakdale MN, US

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

H01J 1/62

US Classification:

2504941, 313501, 359726

Abstract:

A photon emitting device comprises a plurality of solid state radiation sources to generate radiation. The solid state radiation sources can be disposed in an array pattern. Optical concentrators, arranged in a corresponding array pattern, receive radiation from corresponding solid state radiation sources. The concentrated radiation is received by a plurality of optical waveguides, also arranged in a corresponding array pattern. Each optical waveguide includes a first end to receive the radiation and a second end to output the radiation. A support structure is provided to stabilize the plurality of optical waveguides between the first and second ends. The photon emitting device can provide a replacement for a discharge lamp device in various applications including road illumination, spot lighting, back lighting, image projection and radiation activated curing.

US Patent:

D635233, Mar 29, 2011

Filed:

Jun 2, 2008

Appl. No.:

29/308207

Inventors:

Benny Kevin Nelson - Bloomington MN, US
John Kuhn - Richfield MN, US
Donald Larson - Brooklyn Park MN, US
David Nelson - Savage MN, US

Assignee:

Donaldson Company, Inc. - Minneapolis MN

International Classification:

2304

US Classification:

D23365

US Patent:

8083825, Dec 27, 2011

Filed:

Feb 27, 2006

Appl. No.:

11/816994

Inventors:

Wade Stephen Mosset - Savage MN, US
John David Kuhn - Richfield MN, US
Susan Rae Brady - Chanhassen MN, US
Donald Duane Larson - Brooklyn Park MN, US
Wayne R. W. Bishop - St. Louis Park MN, US

Assignee:

Donaldson Company, Inc. - Minneapolis MN

International Classification:

B01D 46/00

US Classification:

55502, 55497, 55498, 55503, 55521, 123198 E

Abstract:

A filter arrangement includes a filter media pack having a side wall. A ring is oriented around and against the side wall of the filter media pack. The ring includes a band having an interior surface oriented against the side wall of the filter media pack and an opposite exterior surface. A first seal member is secured to the exterior surface of the band. The first seal member is oriented radially from the filter media pack. The filter media pack includes Z-media having an inlet flow face and an opposite outlet flow face. An air cleaner including a housing with a filter element operably installed therein is provided. Methods of installing, filtering, and servicing are described.

US Patent:

8216334, Jul 10, 2012

Filed:

Nov 14, 2008

Appl. No.:

12/291893

Inventors:

Benny Nelson - Bloomington MN, US
John Kuhn - Richfield MN, US
Donald Larson - Brooklyn Park MN, US
David Nelson - Coon Rapids MN, US

International Classification:

B01D 46/00

US Classification:

55495, 55431, 55480, 55481, 55482, 55502, 55521

Abstract:

Air cleaner assemblies and components therefor are described. An example first or main filter cartridge is described which includes a media pack comprising strips of fluted material secured to facing sheets, oriented in a stack. The media pack defines opposite inlet and outlet flow faces, with flutes extending in a direction therebetween. The media pack is non-removably secured within a filter cartridge housing, at a location between opposite sections of a shell, typically secured thereto with an adhesive. The shell also defines a closed end, spaced from, but in overlap with, the outlet end face of the media pack. The closed end is typically curved and the shell typically provides either a d/b-shape or a u-shape. The filter includes an end member, with a outlet flow aperture arrangement therein, allowing for outlet flow from the filter cartridge in a general direction orthogonal to air flow through the media pack. The air cleaner assembly includes a housing having features for receipt of, and engagement by, the filter cartridge.

US Patent:

20050116235, Jun 2, 2005

Filed:

Dec 2, 2003

Appl. No.:

10/727220

Inventors:

John Schultz - Afton MN, US
Donald Larson - Cedar Park TX, US
Michael Miller - Austin TX, US

International Classification:

H01L033/00

US Classification:

257079000

Abstract:

An illumination assembly includes a substrate having an electrically insulative layer on a first side of the substrate and an electrically conductive layer on a second side of the substrate. A plurality of LED dies is disposed on the substrate. Each LED die is disposed in a via extending through the electrically insulative layer on the first side of the substrate to the electrically conductive layer on the second side of the substrate. Each LED die is operatively connected through the via to the electrically conductive layer.

US Patent:

20130036718, Feb 14, 2013

Filed:

Jul 9, 2012

Appl. No.:

13/544033

Inventors:

Benny Nelson - Bloomington MN, US
John Kuln - Richfield MN, US
Donald Larson - Brooklyn Park MN, US
David Nelson - Coon Rapids MN, US

Assignee:

Donaldson Company Inc. - Minneapolis MN

International Classification:

B01D 46/52

US Classification:

55497

Abstract:

Air cleaner assemblies and components therefor are described. An example first or main filter cartridge is described which includes a media pack comprising strips of fluted material secured to facing sheets, oriented in a stack. The media pack defines opposite inlet and outlet flow faces, with flutes extending in a direction therebetween. The media pack is non-removably secured within a filter cartridge housing, at a location between opposite sections of a shell, typically secured thereto with an adhesive. The shell also defines a closed end, spaced from, but in overlap with, the outlet end face of the media pack. The closed end is typically curved and the shell typically provides either a d/b-shape or a u-shape.

US Patent:

55861342, Dec 17, 1996

Filed:

Oct 12, 1994

Appl. No.:

8/322309

Inventors:

Palash P. Das - Vista CA
Donald G. Larson - San Diego CA

Assignee:

Cymer Laser Technologies - San Diego CA

International Classification:

H01S 300

US Classification:

372 38

Abstract:

A housing in a laser system encloses a cathode and a displaced anode and gases ionizable and reactive chemically when a voltage pulse produces a cathode-anode electrical discharge. Moving air cools the components (capacitors, thyratron and triggering circuitry) for producing the voltage pulses. The laser gas temperature is continuously regulated at a particular value whether or not there is an electrical discharge. The concentration of one of the gases in the chamber is regulated to values alternately on opposite sides of an optimal value to provide an optimal energy in each chemical reaction of the gases. The gases are recirculated as by a fan driven on a shaft by a pair of motors and are filtered during such recirculation. The shaft speed is regulated at a particular value and the motor currents are regulated to be equal. Any ozone formed in a compartment holding the high voltage terminals is purged by passing a neutral gas (nitrogen) through the compartment to the atmosphere.

US Patent:

42012988, May 6, 1980

Filed:

Feb 14, 1979

Appl. No.:

6/011799

Inventors:

Donald A. Larson - Circle Pines MN
Theodore J. Reichert - Turtle Lake WI

Assignee:

Hartzell Manufacturing, Inc. - St. Paul MN

International Classification:

B65D 8530

US Classification:

206387

Abstract:

A storage case for two different sizes of boxed video cassettes has a rectangular base and a complementary rectangular cover. Ribs formed on the interior of the side walls of the base define spaces for a plurality of one size of boxed video cassette between one pair of opposed side walls and spaces for a plurality of the other size between the other pair of opposed side walls. Ribs on the interior of the end wall of the base raise the lesser height cassette so that it extends the same distance above the base end wall as the cassette of greater height, whereby either cassette will fit closely under the end wall of the cover.