Mixture-lubricated four-stroke engine

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United States of America Patent

PATENT NO 10801396
APP PUB NO 20190218961A1
SERIAL NO

16249693

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A mixture-lubricated four-stroke engine has a cylinder and a piston. On the piston, at least one piston ring is arranged. Between valve drive chamber and crankcase interior, at least one first channel is arranged. The first opening of the first channel lies in the bottom dead center position of the piston below each piston ring. At the first opening, the first channel defines a first middle flow direction for mixture flowing into the crankcase interior. The first middle flow direction extends inclined towards the combustion chamber and in a viewing direction perpendicular to the cylinder longitudinal plane intersects the longitudinal center axis above the first opening of the first channel.

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Patent Owner(s)

Patent OwnerAddress
ANDREAS STIHL AG & CO KGBADSTRASSE 115 WAIBLINGEN 71336

International Classification(s)

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  • 2019 Application Filing Year
  • F01M Class
  • 328 Applications Filed
  • 226 Patents Issued To-Date
  • 68.91 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances20192020202120222023202420250255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dangelmaier, Manuel Wernau, DE 8 30
Groskopf, Gordon Stuttgart, DE 2 0

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  • 0 Citation Count
  • F01M Class
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  • 5 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges725501 - 1005101520253035404550556065707580

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