Mark H Schaefer

US Patent:

6810849, Nov 2, 2004

Filed:

Jun 7, 2001

Appl. No.:

09/600096

Inventors:

Nicholas Robert Hirsch - Pewaukee WI
Mark Donald Schaefer - Waukesha WI
Michael Paul Braun - Wauwatosa WI
Peter Hotz - Whitefish Bay WI
Darrell Albert Wiatrowski - Beach Park IL
Ronald Lee Bartelt - Muskego WI
Brian Hubbard - East Troy WI

Assignee:

Briggs Stratton Corporation - Wauwatosa WI

International Classification:

F02N 100

US Classification:

1231853, 123196 R, 123311, 123 4156

Abstract:

A four-stroke internal combustion engine is provided that is capable of use in many power tools, including those power tools subjected to tippable applications. There is provided within an engine housing an oil reservoir and a valve chamber which independently communicate with a crank chamber. A strategically placed divider and passageway, located within the engine housing, appropriately direct lubricant within the engine housing so that the internal cavity of the engine is lubricated during use in various operating attitudes, and so that the fluid flows to and is held in the proper chambers of the engine housing during storage. There is also provided a breather arrangement for an internal combustion engine which includes a cam shaft having a hollow passageway in communication with the crank chamber and the air intake system of the engine.

US Patent:

6888341, May 3, 2005

Filed:

Sep 16, 2003

Appl. No.:

10/662523

Inventors:

Robert D. Johnson - Pleasant Prairie WI, US
Mark R. Schaefer - Greendale WI, US
Daniel Mieczkowski - Pleasant Prairie WI, US

Assignee:

Snap-On Incorporated - Pleasant Prairie WI

International Classification:

G01R019/14

US Classification:

324 725, 324133, 324324, 324556

Abstract:

A handheld dual voltage circuit tester, method and electronic circuit that quickly allows a technician to determine whether an automotive electrical system runs on a 12-14 volt circuit or 36-42 volt circuit. The tester may be used for automobiles having a single voltage electrical system, or automobiles with distinct electrical systems operating on one of a 12-14 volts circuit or a 36-42 volt circuit. The tester includes a screwdriver-type elongated handle and probe tip. The tester also includes electronic circuitry disposed within its handle, heat shrink tubing, a conductive spring assembly, a strain relief, a retractable coil cord, a ground clip and insulation that encloses the ground clip. The tester also includes electronic circuitry that emits light of a first color when a 12-14 volt circuit is sensed, and light of a second color when a 36-42 volt circuit is sensed.

US Patent:

20040255895, Dec 23, 2004

Filed:

Jul 21, 2004

Appl. No.:

10/896598

Inventors:

Nicholas Hirsch - Pewaukee WI, US
Mark Schaefer - Waukesha WI, US
Michael Braun - Wauwatosa WI, US
Peter Hotz - Whitefish Bay WI, US
Darrell Wiatrowski - Beach Park IL, US
Ronald Bartelt - Muskego WI, US
Brian Hubbard - West Bend WI, US

International Classification:

F01M001/00
F02B075/32

US Classification:

123/19600R, 123/197400

Abstract:

A four-stroke internal combustion engine is provided that is capable of use in many power tools, including those power tools subjected to tippable applications. There is provided within an engine housing, an oil reservoir and a valve chamber which independently communicate with a crank chamber. A system of strategically placed dividers and passageways within the engine housing appropriately directs lubricant within the engine housing so that the internal cavity of the engine is lubricated during use in any operational attitude, and so that the lubricant flows to and is held in the proper chambers during storage. There is also provided a breather arrangement for an internal combustion engine which includes a camshaft having a hollow passageway in communication with a crank chamber.

US Patent:

20080236346, Oct 2, 2008

Filed:

Mar 30, 2007

Appl. No.:

11/694127

Inventors:

Brian Klett - Hubertus WI, US
Mark Schaefer - Racine WI, US
Michael Duley - Slinger WI, US

Assignee:

HARLEY-DAVIDSON MOTOR COMPANY GROUP, INC. - Milwaukee WI

International Classification:

B25B 27/00

US Classification:

81488, 292815

Abstract:

A primary locking tool for use with first and second primary drive assemblies. The first primary drive assembly includes a first drive sprocket and a first input sprocket a first distance from one another. The second primary drive assembly includes a second drive sprocket and a second input sprocket a second distance from one another. The second distance is greater than the first distance. The primary locking tool includes a first side portion having a drive jaw configured to engage the first and second drive sprockets. A second side portion includes an input jaw configured to engage the first and second input sprockets. The first and second side portions are coupled together for movement between a retracted position and an extended position that engage and resist rotation of the first drive sprocket and first input sprocket and the second drive sprocket and second input sprocket, respectively.

Address:

5355 Coachlamp Dr, Racine, WI 53406

Phone:

2628862325

VIN:

5NPEC4AC0BH122019

Make:

HYUNDAI

Model:

SONATA

Year:

2011