Mechanism for forming and mounting mirrors in the shell of a binocular or like viewing instrument
CA 1094788 A · Owner: Beecher, Willliam J. · Inventors: Beecher, Willliam J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A press-type mechanism by means of which reflective mirror-forming layers in the form of coatings or conventional mirrors are transferred in pairs from right-angle master surfaces on prism-like blocks to right-angle mirror blanks and the latter with the mirror-forming layers thereon are then delivered to the optical system of the shell of a binocular or like viewing instrument where they automatically become cemented in place so that the mirror-forming layers assume an accurate porro relationship. The existence of the epoxy or other cementitious material which is used for the cementing operation compensates for discrepancies in manufacturing tolerances of either the replicated mirror blanks …
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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 February 3, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 3, 1998.
- 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.