Indentation resistance measurement method, indentation resistance prediction method for rolling bearings, machining condition selection method, bearing material quality selection method, burnishing condition selection method, and bearing manufacturing method

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11965556
APP PUB NO 20220268316A1
SERIAL NO

17631178

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A method for measuring indentation resistance includes: obtaining a first curve indicating a yield shear stress in a depth direction of a raceway surface of a material forming a rolling bearing in a state before the raceway surface is subjected to machining, a second curve indicating a static shear stress in the depth direction of the raceway surface in a state in which the raceway surface is subjected to the machining, and a third curve indicating a static shear stress in the depth direction of the raceway surface in a state in which rolling elements are in contact with the raceway surface and a static load is applied to the raceway surface; and obtaining a correlation between an area and an indentation depth of the raceway ring by defining a region surrounded by exceeding the first curve and the second curve and falling below the third curve as the area.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

  • NSK LTD.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hidaka, Hideyuki Fujisawa, JP 7 21
Ishigami, Hayato Fujisawa, JP 1 0
Ito, Hirofumi Fujisawa, JP 29 178
Komata, Hiroki Fujisawa, JP 1 0
Natori, Masahide Fujisawa, JP 3 2
Shimada, Takahito Fujisawa, JP 1 0

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 Oct 23, 2027
7.5 Year Payment $3600.00 $1800.00 $900.00 Oct 23, 2031
11.5 Year Payment $7400.00 $3700.00 $1850.00 Oct 23, 2035
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00