1. Thrust Bearing (DynaBearing): A maximum capacity cylindrical roller
thrust bearing.
- USA Patent No. 6,883,970 April 2005
- Canadian Patent No. 2 292 286 July 2004
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2. Concentric radii ball bearing stack: A self-aligning mud lubricated ball
bearing stack.
- USA Patent No. 7,246,947 July 2007
- [CDN Patent Application No. 2 504 233 Filed April 2005]
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3. Bearing with pass or fail wear gauge: A unitized angular contact mud
lubricated ball bearing with ball wear gauge feature.
- USA Patent No. 7,401,982 July 22 2008
- [Canadian Patent Application No. 2 498 748 Filed Feb 2005]
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4. Sealed Bearing: A full complement ball or tapered roller thrust
bearing with unifying seal elements.
- USA Patent No. 7,841,774 B2 Nov 30 2010
- Canadian Patent Application No. 2,587,904 Filed April 2007
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