Bearings – Rotary bearing – Antifriction bearing
Reexamination Certificate
2005-12-06
2005-12-06
Hannon, Thomas R. (Department: 3682)
Bearings
Rotary bearing
Antifriction bearing
C384S625000
Reexamination Certificate
active
06971800
ABSTRACT:
A shaft and bearing assembly comprising a soft shaft having an outer contact surface having a hardness less than 30 HRC and a bearing assembly having a plurality of rollers. The bearing assembly is configured to be positioned about the shaft with the rollers in rolling contact with the shaft outer contact surface. The rollers have a roller contact surface having a hardness less than 45 HRC.
REFERENCES:
patent: 4172621 (1979-10-01), Yoshida
patent: 4659241 (1987-04-01), Bamberger et al.
patent: 4770550 (1988-09-01), Takahashi
patent: 5054440 (1991-10-01), Kadokawa
patent: 6419397 (2002-07-01), Beaman
www.sousacorp.com/hardness.htm, Jun. 14, 1999.
www.bestar.us/tech/hardness/hardness—conversions.htm.
Beaman Michael D.
Schaub Brian D.
Hannon Thomas R.
Michael & Best & Friedrich LLP
Timken US Corporation
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