Shaft polishing method and a shaft produced thereby

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United States of America Patent

PATENT NO 6135861
SERIAL NO

09431210

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A shaft polishing method includes a roughing step in which the length of fresh abrasive tape is pressed against an area, such as a hydraulic seal area, for selected time intervals while the shaft is rotated at a relatively low speed. A roughing step is followed by the finishing step, during which the shaft is rotated at a relatively high speed and the abrasive tape is pressed thereagainst for different time intervals. The resulting shaft area which has been thus polished is free of spiraling tool marks and spiraling marks left by grinding tools, which marks can provide paths through which hydraulic fluid may leak.

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Patent Owner(s)

Patent OwnerAddress
PARKER HANNIFIN CUSTOMER SUPPORT INC14300 ALTON PARKWAY IRVINE TX 92618

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Schaack, Donald J White Bear Lake, MN 1 2

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  • 2 Citation Count
  • B24B Class
  • 5.71 % this patent is cited more than
  • 25 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges141703812532101 - 1011 - 2021 - 3031 - 4041 - 5051 - 60100 +0102030405060708090100110120130140150160170180

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