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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.:

US 9581104 B1

PDFFull Text
Date of Patent:
Feb. 28, 2017

Filed:

Oct. 16, 2014

Steel piston for an internal combustion engine and method for its production

Applicants:

Mahle International Gmbh, Stuttgart, DE;

Oerlikon Trading Ag, Truebbach, Truebbach, CH;

Inventors:

Monika Lehnert, Remseck, DE;

Reinhard Rose, Fellbach, DE;

Juergen Ramm, Maienfeld, CH;

Beno Widrig, Bad Ragaz, CH;

Assignees:

Mahle International GmbH, , DE;

Oerlikon Surface Solutions AG, Pfäffikon, , CH;

Attorney:

Fishman Stewart PLLC

Primary Examiner:

Maguerite McMahon

Int. Cl.
CPC ...
B32B 15/04 (2006.01); F02F 3/00 (2006.01); C23C 14/02 (2006.01); C23C 14/06 (2006.01); C23C 28/04 (2006.01); C23C 28/00 (2006.01); F02F 3/14 (2006.01); B23P 15/10 (2006.01); F02F 3/10 (2006.01);
U.S. Cl.
CPC ...
F02F 3/0084 (2013.01); B23P 15/10 (2013.01); C23C 14/024 (2013.01); C23C 14/025 (2013.01); C23C 14/0641 (2013.01); C23C 14/0676 (2013.01); C23C 28/042 (2013.01); C23C 28/044 (2013.01); C23C 28/048 (2013.01); C23C 28/322 (2013.01); C23C 28/347 (2013.01); C23C 28/3455 (2013.01); C23C 28/42 (2013.01); F02F 3/10 (2013.01); F02F 3/14 (2013.01); Y10T 29/49249 (2015.01);
Abstract

A steel piston for an internal combustion engine may include a piston crown and a protective layer disposed on the piston crown. The protective layer may include an adhesion layer of Cr or CrN, which is present on a surface of the piston crown. The protective layer may include a functional layer, which is present on the adhesion layer. The functional layer may have at least one of (i) at least one layer (A) of CrN and (ii) at least one layer (B) of CrOn in the form of [(A)/(B)], and a may represent 1 to 100.

Find Patent Forward Citations

Lehnert, Monika. (2017). Steel piston for an internal combustion engine and method for its production (U.S. Patent No. 9581104). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9581104

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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