US Patent 7997185 Piston ring
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Edits on 28 Nov, 2023
Golden AI
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Article (+410 characters)
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Patent abstract
A piston has a body with a first circumferentially disposed groove. A first ring is movably disposed within the first groove. The first ring defines an inner circumferential groove. A blocking ring is at least partially located in the groove of the first ring and the groove of the piston. One or more vent passages may connect a first volume in the piston to a second volume outside the piston.
Edits on 19 May, 2023
Golden AI
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Infobox (+1/-1 properties)
US Patent 07997185 Piston ring US Patent 7997185 Piston ring
Infobox
Patent Number
0799718500
Patent Number
799718500
Edits on 23 Apr, 2023
Golden AI
Infobox
Is a
Patent Jurisdiction
Patent Number
079971850
Date of Patent
August 16, 2011
0Patent Application Number
120541010
Date Filed
March 24, 2008
0Patent Primary Examiner
Edits on 28 Sep, 2022
Golden AI
Infobox
Is a
Patent Jurisdiction
Patent Number
079971850
Date of Patent
August 16, 2011
0Patent Application Number
120541010
Date Filed
March 24, 2008
0Patent Primary Examiner
Edits on 8 Dec, 2021
Golden AI
Edits made to:
Infobox (+7 properties)
US Patent 07997185 Piston ring
Infobox
Is a
Patent jurisdiction
Patent number
07997185
Date of patent
August 16, 2011
Patent application number
12054101
Date Filed
March 24, 2008
Patent primary examiner
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