US Patent 11346332 Piston ring and compressor
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Patent Jurisdiction
Patent Number
113463320
Date of Patent
May 31, 2022
0Patent Application Number
170461670
Date Filed
April 8, 2019
0Patent Primary Examiner
Edits on 23 Sep, 2022
Golden AI
Infobox
Is a
Patent Jurisdiction
Patent Number
113463320
Date of Patent
May 31, 2022
0Patent Application Number
170461670
Date Filed
April 8, 2019
0Patent Primary Examiner
Edits on 1 Jun, 2022
Golden AI
Edits made to:
Infobox (+17 properties)
Article (+726 characters)
US Patent 11346332 Piston ring and compressor
Article
A piston ring includes a first ring portion which is fitted onto an outer circumferential portion of a piston and which is capable of sliding relative to an inner wall surface of a cylinder, and a second ring portion which is fitted onto the outer circumferential portion of the piston, arranged side-by-side with the first ring portion in the axial direction, and which is capable of sliding relative to the inner wall surface of the cylinder. The second ring portion is fitted onto the outer circumferential portion of the piston in such a way as to be positioned on a side opposite to a compression chamber inside the cylinder, relative to the first ring portion, and has a greater hardness than the first ring portion has.
Infobox
Is a
Patent jurisdiction
Patent number
11346332
Date of patent
May 31, 2022
Patent application number
17046167
Date Filed
April 8, 2019
Patent primary examiner
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