Pointing device
CA 2108632 C · Owner: Ascii Corporation · Inventors: Tanaka, Shinya; Ito, Yoshiyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
When keyboard 1 is set on the upper side ball 10 is inserted, between stopper 8 and the coordinate converting unit 4. As a result, the coordinate converting unit 4 is fixed by ball 10. When the user moves the pointing device on the flat surface the, ball 6 then moves according to the user's operation. Further-more when the user pushes keyboard 1, detecting switch 7 is pressed by protrusion 3, and then detecting switch 7 is switched to the ON state. On the other hand, when the pointing device is set upside down by the user, ball 10 moves to the opposite side via gravitation. Then ball 10 is inserted between stopper 8 and keyboard 1 and, as a result, keyboard 1 is fixed by ball 10. When 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
- Filed October 18, 1993 and granted September 16, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 18, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 18, 2015.
- 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.