Peter L Hotz

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:

49778790, Dec 18, 1990

Filed:

Feb 12, 1990

Appl. No.:

7/479084

Inventors:

Gregory R. Schmidt - Port Washington WI
Peter Hotz - Milwaukee WI

Assignee:

Briggs & Stratton Corporation - Wauwatosa WI

International Classification:

F02D 908

US Classification:

123376

Abstract:

A mechanical speed governor for internal combustion engines includes a centrifugal weight carrier and an arm means that extends through the top side of the upper engine housing. The arm means moves in response to movement by the centrifugal weight carrier to control the amount of fuel delivered for engine combustion. The governor arrangement avoids the oil seal and bell crank levers required in prior art devices.