Ergonomic-interface keyboard system
CA 2121677 C · Owner: Spencer, Jeffrey B. · Inventors: Albert, Stephen L.; Spencer, Jeffrey B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Conceived with the human-engineering objective of overcoming Repetitive Motion Injuries such as Carpal Tunnel Syndrome. The solution, a system comprising a splitkeyboard spaced laterally into vertically arranged co-operative keypad halves (24, 24') optimally enabling the user to sit with the lightweight portable keyboard (23 23') assembly, laying directly upon their lap. Traditional keyboards orient operator's hands inducing a wrist-twisting arm-extending, stress while the stress-free ergonomic bodily position herein liberates one from such trauma by reorientation of the hands and arms to a non-pronated, unextended position. This correction involves the upper-arm draping naturally down from …
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 August 5, 1992 and granted February 5, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 5, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 5, 2014.
- 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.