US Patent 7374493 Power transmission shaft
Patent 7374493 was granted and assigned to NTN Corporation on May, 2008 by the United States Patent and Trademark Office.
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Patent abstract
A power transmission shaft such as a spline shaft and a serration shaft is provided which has improved static strength and fatigue strength. In a power transmission shaft, a diameter expansion surface is formed in a valley section of a tooth on the opposite side of a shaft end. First blunt sections in the shape of a curved surface are formed in corners between the diameter expansion surface and a tooth surface adjacent to the diameter expansion surface, in order to blunt edges.
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US Patent 07374493 Power transmission shaft US Patent 7374493 Power transmission shaft
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Patent Number
0737449300
Patent Number
737449300
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Official Website
Edits on 27 Mar, 2023
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Infobox
Is a
Current Assignee
Patent Jurisdiction
Patent Number
073744930
Date of Patent
May 20, 2008
0Patent Application Number
109873000
Date Filed
November 15, 2004
0Official Website
Patent Primary Examiner
Edits on 27 Sep, 2022
Golden AI
Infobox
Is a
Current Assignee
Patent Jurisdiction
Patent Number
073744930
Date of Patent
May 20, 2008
0Patent Application Number
109873000
Date Filed
November 15, 2004
0Official Website
Patent Primary Examiner
Edits on 17 Jun, 2022
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Edits on 29 Nov, 2021
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US Patent 07374493 Power transmission shaft
Infobox
Is a
Current assignee
Patent jurisdiction
Patent number
07374493
Date of patent
May 20, 2008
Patent application number
10987300
Date Filed
November 15, 2004
Patent primary examiner
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