Floating mask encoder
CA 1261425 A · Owner: Kollmorgen Technologies Corporation · Inventors: Savla, Lalit J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In an optical shaft encoder for converting rotary motion to an electrical signal, a shaft is rotatably mounted in a base and has a code disk attached thereto. A light source and photodetector are disposed on opposite sides of the code disk. The photodetector is covered by a mask which is attached thereto. The photodetector/mask assembly is loosely inserted into a printed circuit board and a spacer is placed between the code disk and the photodetector/mask assembly to achieve a predetermined air gap. The photodetector/mask assembly is then radially aligned with the code disk. After proper placement the photodetector/mask assembly is soldered in place and the spacer is removed. This technique …
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 September 26, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 26, 2006.
- 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.