US Patent: 1,605,040
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| Piston
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Patentee:
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| Oscar C. Kreis (exact or similar names) - Detroit, Wayne County, MI |
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Patent Dates:
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| Applied: |
Jul. 19, 1925 |
| Granted: |
Nov. 02, 1926 |
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Patent Pictures:
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Joel Havens
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Description: |
| Abstract:
My invention relates to an improved construction of piston for internal combustion motors, constructed to remove excess oil from the cylinder wall and prevent oil pumping without the accompaniment of undesirable noises heretofore experienced with certain types of structure intended for the purposes of preventing oil pumping.
Claim:
A piston for internal combustion motors having a head and a cylindrical wall having ring grooves containing piston rings characterized by providing the cylindrical wall with a first set of oil drainage holes from the bottom of the lowermost ring groove to' the outer surface of said wall below said ring groove, and a second set of oil drainage holes through said wall from the outer surface thereof to the interior of the piston. |
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