US Patent 7267344 Piston ring with a PVD coating
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Patent abstract
A piston ring for an internal combustion engine is made of steel and has an outer contact surface that is nitrated and coated to no more than 70 μm with a protective coating comprising nitrides of aluminum and/or silicium and/or zirconium in a matrix of chromium-nitride based material.
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US Patent 07267344 Piston ring with a PVD coating US Patent 7267344 Piston ring with a PVD coating
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Patent Number
0726734400
Patent Number
726734400
Edits on 22 May, 2023
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Official Website
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Infobox
Is a
Patent Jurisdiction
Patent Number
072673440
Date of Patent
September 11, 2007
0Patent Application Number
105050420
Date Filed
February 1, 2003
0Official Website
Patent Primary Examiner
Edits on 26 Sep, 2022
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Infobox
Is a
Patent Jurisdiction
Patent Number
072673440
Date of Patent
September 11, 2007
0Patent Application Number
105050420
Date Filed
February 1, 2003
0Official Website
Patent Primary Examiner
Edits on 17 Jun, 2022
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US Patent 07267344 Piston ring with a PVD coating
Infobox
Is a
Patent jurisdiction
Patent number
07267344
Date of patent
September 11, 2007
Patent application number
10505042
Date Filed
February 1, 2003
Patent primary examiner
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