Mark A Schaefer

US Patent:

6790163, Sep 14, 2004

Filed:

Aug 10, 2000

Appl. No.:

09/636473

Inventors:

Keith Van De Laarschot - Hartland WI 53029
Mark D. Schaefer - Waukesha WI

Assignee:

Keith Van De Laarschot - Hartland WI

International Classification:

A63B 21008

US Classification:

482 56, 434254

Abstract:

A swim stroke exercise device including an adjustable resistance mechanism is provided. The resistance mechanism is attached to one end of the exercise device and includes a roller assembly having a roller clutch and a drive shaft extending from one end and a spring rewind assembly attached opposite the drive shaft. The drive shaft supports a drive pulley including a number of concentric engagement areas having different diameters. Adjustably disposed above the roller assembly, a resistance device includes an output shaft terminating in a mag pulley opposite the resistance device formed similarly to the drive pulley with a number of concentric engagement areas having different diameters that are aligned with the engagement areas on the drive pulley. The concentric engagement areas allow a belt trained about the pulleys to be moved to various positions on both the drive pulley and mag pulley to increase or decrease the amount of resistance provided to the drive shaft by the clutch. A separate adjustment mechanism is also connected directly to the clutch to vary the resistance provided by the clutch.

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.

US Patent:

62727559, Aug 14, 2001

Filed:

May 24, 1999

Appl. No.:

9/317509

Inventors:

Vern Mittlesteadt - Reedsburg WI
Mark D. Schaefer - Waukesha WI
Brian W. Hubbard - East Troy WI

Assignee:

Alterra Holdings Corporation - Portland OR

International Classification:

B26B 1326
B25G 300

US Classification:

30249

Abstract:

A tool for performing lopping, pruning and similar operations includes a housing assembly formed of a pair of telescoping tubular sections. The tool also includes a tool head, a head line and an actuating line. The tool head, which is connected to one end of a tubular section, preferably includes a spring-biased blade coupled to the head line which is connected to a slidable block. The actuating line, while engaging the slidable block so that tensioning the actuating line causes movement of the blade, is also slidable relative to the block upon relative movement of the tubular sections.

US Patent:

59339659, Aug 10, 1999

Filed:

Jul 12, 1997

Appl. No.:

8/897821

Inventors:

Erkki Olavi Linden - Billnas, FI
Vern Mittlesteadt - Reedsburg WI
Angelo M. Marasco - Waunakee WI
Mark D. Schaefer - Waukesha WI
Brian W. Hubbard - East Troy WI

Assignee:

Fiskars Inc. - Madison WI

International Classification:

B26B 1326

US Classification:

30249

Abstract:

A tool for performing lopping, pruning and similar operations includes a housing assembly formed of a pair of telescoping tubular sections. The tool also includes a tool head, a head line and an actuating line. The tool head, which is connected to one end of a tubular section, preferably includes a spring-biased blade coupled to the head line which is connected to a slidable block. The actuating line, while engaging the slidable block so that tensioning the actuating line causes movement of the blade, is also slidable relative to the block upon relative movement of the tubular sections.

US Patent:

61052574, Aug 22, 2000

Filed:

Aug 14, 1998

Appl. No.:

9/134361

Inventors:

Alan Rutkowski - Waunakee WI
Bill Freimuth - Verona WI
Mark Schaefer - Waukesha WI
Darrell Wiatrowski - Milwaukee WI

Assignee:

Fiskars Inc. - Madison WI

International Classification:

B26B 1326

US Classification:

30199

Abstract:

The invention is an apparatus having opposed jaws remotely located at a distance from actuator for the jaws. In particular, the apparatus has opposed jaws supported rotatably with respect to the actuator for the jaws. More particularly, the apparatus is a cutting device having opposed jaws located remotely and rotatably with respect to the jaw actuator for lopping limbs.