Method for detecting the state of a lift cage and lift system wherein the method is used
CA 2602660 C · Owner: Kunz, Rene · Inventors: Kunz, Rene
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a lift system (10) comprising a lift cage (11) which , is provided with belt-like traction/drive means (14) which comprise markings (12) disposed along the length thereof. A device for detecting at least the position, optionally, also the speed and the acceleration of the lift cage which is used to scan the markings (12) comprises a detector (13) which is , secured to the lift cage (11) and is displaced therewith. The detector is preferably, arranged in such a manner that it detects the markings (12) in one section of the traction/drive means (14) which extend from the underloop of the carrier rollers (19) on the lift cage (11) directly to a fixed point (14.4) …
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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 March 20, 2006 and granted July 15, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 20, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.