The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 22, 2016
Filed:
Jun. 23, 2014
Applicant:
Samyoung Machinery Co., Ltd., Chungcheongnam-do, KR;
Inventor:
Geum Tai Han, Daejeon, KR;
Assignee:
Samyoung Machinery Co., Ltd., Chungcheongnam-do, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01P 1/04 (2006.01); F01P 3/10 (2006.01); F02F 3/00 (2006.01); F02F 3/22 (2006.01); F01M 1/08 (2006.01); F02B 3/06 (2006.01); F01P 3/08 (2006.01);
U.S. Cl.
CPC ...
F01P 3/10 (2013.01); F02F 3/0015 (2013.01); F02F 3/0023 (2013.01); F02F 3/0076 (2013.01); F02F 3/22 (2013.01); F01M 1/08 (2013.01); F01P 3/08 (2013.01); F02B 3/06 (2013.01); F05C 2201/021 (2013.01);
Abstract
A piston assembly includes: a piston skirt; and a piston crown formed by a casting method and coupled to an upper portion of the piston skirt by using a stud bolt, wherein oil galleries are formed between an upper wall of the piston skirt and an upper wall of the piston crown, wherein an annular part having a circular ring shape and a plurality of ribs having a linear shape and radially arranged to form oil channels for flowing cooling oil are formed on the upper wall of the piston crown, and the plurality of ribs are divided into outer ribs and inner ribs by the annular part.