Piston having oil return passage

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11846351
APP PUB NO 20230145204A1
SERIAL NO

17983363

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A piston with an oil return channel may include a piston head, a piston skirt, and an oil return hole. The piston head may include a ring groove. The piston skirt may be connected to the piston head. The piston skirt may have a surface including a concave face window. A connection between the face window and the ring groove may form a residual ring bank. The oil return hole may be formed by milling on the residual ring bank. The oil return hole may connect the ring groove close to the piston skirt with the face window. A depth of the oil return hole may be greater than a depth of the ring groove.

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Patent Owner(s)

Patent OwnerAddress
MAHLE INTERNATIONAL GMBH70376 STUTTGART
MAHLE AUTOMOTIVE TECHNOLOGIES (CHINA) CO LTDSHANGHAI

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Zeng, Shaobo Shanghai, CN 3 1
Zhu, Jianjun Shanghai, CN 27 202

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