Load measuring apparatus for an elevator car
CA 2084121 A1 · Owner: Inventio Ag · Inventors: Pearson, David B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
P10377.S01, Abstract of the Disclosure The load measuring apparatus is arranged at an elevator car and detects the car load brought about by passengers and/or goods transported by the elevator car. An upper crossbeam together with vertically extending supports and a lower crossbeam forms a support frame suspended at traction cables and moves within an elevator shaft along suitable guide rails. A floor frame mounted on isolation pads at the lower crossbeam carries the elevator car. At the roof of the elevator car there is centrally arranged a reference plate member which is part of the load measuring apparatus. A proximity sensor centrally arranged at the upper crossbeam has a predetermined …
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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 November 30, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 30, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 30, 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.