Angle sensor for orthopedic rehabilitation device
CA 2395722 A1 · Owner: Poirier, David A. · Inventors: Poirier, David A.; Purohit, Sumit
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An angle sensor (110) for an orthopedic rehabilitation device (100) includes a magnet (210) and Hall effect sensor (200). The magnet (210) is attached to a first member (150), and the Hall effect sensor (200) is attached to a second member (160) of the orthopedic rehabilitation device (100). The Hall effect sensor (200) detects the presence of magnetic flux created by the magnet and , produces an output voltage signal that changes as a function of the magnetic flux detected by the Hall effect sensor. As the first member (150) rotates relative to the second member (160), the magnet (210) rotates relative to the Hall effect sensor (200), which causes a change in the magnetic flux …
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 January 5, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 5, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 5, 2023.
- 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.