Compensation
CA 2135818 A1 · Owner: Kone Oy · Inventors: De Jong, Johannes
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A compensation arrangement is disclosed for an elevator system of the type having a car, a counterweight a cable, means suspending the car and counterweight a traction sheave, and a diverting pulley around both of which the cable means extends, and a car cable suspended from the car. The compensation arrangement consists of at least one car compensation loop suspended at one end from the car and at the other end from a wall of the elevator shaft. The arrangement also consists of at least one counterweight compensation loop suspended at one, end from the counterweight and at the other end from a wall of the elevator shaft. The circulation speed of the car compensation loop is half 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 November 15, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 15, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 15, 2016.
- 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.