Toric finer-polisher
CA 1323196 C · Owner: Pilkington Visioncare, Inc. · Inventors: Hunter, Billy D.; Tusinski, Joseph
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Toric Finer-Polisher, Abstract, A toric finer-polisher for the fining and/or polishing of a toric lens comprises a lap table for holding a tool, a spindle on which the lap table is mounted, a rocker arm assembly for holding the lens in contact with the tool, and a motor for driving the spindle and lap table so as to cause relative motion between the tool and the lens thereby finishing the surface of the lens. The spindle is fixed at its lower end to a gimbal and is, contacted at an intermediate point along the spindle by a timing belt connected to the motor so as to, maximize a gimbal radius of the lap table assembly thus maintaining a parallel relationship between the tool axis and the …
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
- Granted October 19, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 19, 2010.
- 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.