Tapered roller bearing capable of sustained operation without lubricant replenishment
CA 1191182 A · Owner: Timken Company (The) · Inventors: Orvos, Peter S.; Lee, Peter W.; Jatczak, Chester F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tapered roller bearing has a porous rib ring against which the large ends of its tapered rollers bear so that the ring prevents the rollers from being expelled. The rib ring is formed from porous powdered steel that has been compacted to a density of about 70% to 85% of theoretical and then sintered and machined. To expose the pores at the surface against which the large ends of the rollers bear, the machined rib ring is etched. Finally the rib ring is impregnated with oil. Should the bearing lose its normal supply of lubrication the, critical region of contact between the abutment face on the rib ring and the large ends of the rollers will nevertheless be adequately lubricated for a …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted July 30, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 30, 2002.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.