Michael J Braun

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:

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:

58195130, Oct 13, 1998

Filed:

Aug 29, 1995

Appl. No.:

8/521295

Inventors:

Michael Braun - Wauwatosa WI
Patrick Bruener - Hartland WI
Gary S. Johnson - Hales Corners WI

Assignee:

Briggs & Stratton Corporation - Wauwatosa WI

International Classification:

A01D 3478

US Classification:

56 119

Abstract:

The power head assembly for a cordless electric lawnmower has a removable upper housing that includes two spaced batteries, and a lower housing that is mounted to the deck of the grass cutting device. The upper housing has a handle, and at least one quick disconnect terminal that engages a mating quick disconnect terminal affixed to the lower housing. The lower housing includes an electric motor that is disposed between the two batteries when the upper housing is in place. A portion of the electric motor is located below the deck to further reduce the overall height of the device. The lower housing is mounted to the deck by several bolts which are placed in the same mounting pattern used to mount gasoline engines to a deck, so that the same decks may be used for both the cordless electric and gasoline-powered lawnmowers.

US Patent:

58947159, Apr 20, 1999

Filed:

Nov 15, 1996

Appl. No.:

8/749988

Inventors:

Michael Braun - Wauwatosa WI
Patrick Bruener - Hartland WI
Gary S. Johnson - Hales Corners WI

Assignee:

Briggs & Stratton Corporation - Wauwatosa WI

International Classification:

A01D 3478

US Classification:

56 119

Abstract:

The power head assembly for a cordless electric lawnmower has a removable upper housing that includes two spaced batteries, and a lower housing that is mounted to the deck of the grass cutting device. The upper housing has a handle, and at least one quick disconnect terminal that engages a mating quick disconnect terminal affixed to the lower housing. The lower housing includes an electric motor that is disposed between the two batteries when the upper housing is in place. A portion of the electric motor is located below the deck to further reduce the overall height of the device. The lower housing is mounted to the deck by several bolts which are placed in the same mounting pattern used to mount gasoline engines to a deck, so that the same decks may be used for both the cordless electric and gasoline-powered lawnmowers.

US Patent:

D3759636, Nov 26, 1996

Filed:

Jul 18, 1995

Appl. No.:

D/041589

Inventors:

Michael Braun - Wauwatosa WI
Patrick Bruener - Hartland WI
Eric Fickas - Germantown WI
Eileen Scharenbroch - West Bend WI
Kipp Stevens - Milwaukee WI

Assignee:

Briggs & Stratton Corporation - Wauwatosa WI

US Classification:

D15 17