Snap over lens assembly
CA 1283316 C · Owner: Blythe, Raymond T. · Inventors: Blythe, Raymond T.; Billings, David L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A one-piece snap-on lens assembly permits the testing of pointer shaft driven switches in instruments without removal of the lens from the instrument housing. The lens assembly may be mounted on an instrument housing which has a dial pointer and, pointer shaft-operated switch. The lens assembly has a round flat surface through which the dial and pointer may be viewed and at the periphery of the round flat surface a curved bezel, which is extended to engage the instrument housing flexibly. A boss portion is integrally formed with the flat surface of the lens.
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 April 23, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 23, 2008.
- 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.