Ceramic blasting apparatus and method to prevent gear pitting
CA 2448485 C · Owner: Engineered Abrasives, Inc. · Inventors: Wern, Michael J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved method for media blasting a workpiece (20) is described. The media blasting method of the present invention includes the steps of positioning the work piece (20) in a part holder (130) for maintaining the workpiece in at least one predetermined position during a blasting operation; supplying positive air pressure to deliver ceramic media to a blast nozzle (155); directing the ceramic media at the workpiece through the blast nozzle (155); exposing multiple surfaces of the workpiece to the ceramic media; and collecting the ceramic media for reuse in subsequent blasting operation.
Read the whole patent
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
- Filed May 24, 2002 and granted September 13, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 24, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 24, 2024.
- 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.