US Patent 7775197 Engine sub-system actuators having variable ratio drive mechanisms
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Patent abstract
An EGR valve (20) comprises three gear parts (40, 42, 44) that provide a variable ratio drive system through which an electric actuator (34) operates a movable valve element (26). Each of the gear parts (40, 42, 44) is a single unitary part, with one part (42) containing two sets of gear teeth (46, 48) each associating with a set of gear teeth of a respective one of the other two parts. Limit stops (56, 58, 60; 68, 70) are integrally formed in two parts (42, 44).
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US Patent 07775197 Engine sub-system actuators having variable ratio drive mechanisms US Patent 7775197 Engine sub-system actuators having variable ratio drive mechanisms
Infobox
Patent Number
0777519700
Patent Number
777519700
Edits on 6 Apr, 2023
Golden AI
Infobox
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Patent Jurisdiction
Patent Number
077751970
Date of Patent
August 17, 2010
0Patent Application Number
117747910
Date Filed
July 9, 2007
0Official Website
Patent Primary Examiner
Edits on 27 Sep, 2022
Golden AI
Infobox
Is a
Patent Jurisdiction
Patent Number
077751970
Date of Patent
August 17, 2010
0Patent Application Number
117747910
Date Filed
July 9, 2007
0Official Website
Patent Primary Examiner
Edits on 3 Jun, 2022
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US Patent 07775197 Engine sub-system actuators having variable ratio drive mechanisms
Infobox
Is a
Patent jurisdiction
Patent number
07775197
Date of patent
August 17, 2010
Patent application number
11774791
Date Filed
July 9, 2007
Patent primary examiner
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