Apparatus for producing shaft-information with respect to an elevator
CA 1253982 A · Owner: Inventio Ag · Inventors: Ferrario, Renato; Smith, Kenneth D.T.; Hochstrasser, Hans
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
It is possible with this apparatus, to produce, shaft-information dependent upon specific elevator-cabin positions without installing actuating elements in the elevator-shaft or emitters in the elevator-cabin. To this end, a memory is provided in which specific locating numbers, identifying shaft-locations, are stored the said, locating numbers being transferred one after the other, as the elevator-cabin travels in the shaft and in the direction of travel, to a register Pulses from a pulse-, generator, driven by the said elevator-cabin are added in, a counter to locating numbers corresponding to the position of the cabin in the shaft. Locating numbers in the counter and in the register are …
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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
- Granted May 9, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 9, 2006.
- 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.