Control equipment for a lift installation
CA 1291281 C · Owner: Schroder, Joris · Inventors: Schroder, Joris
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
By this control equipment the destination floors are put in by means of call registering equipments (9), which are arranged at the floors (E0 and E1 to En). The call registering equipments (9) arranged at the main stopping place (HH) permit only travels to destination floors which are allocated to a certain group of destination floors. According to variant of embodiment, the call registering equipment (9) is provided either with a key field, with a selector disc or with a decade key-board. The key field of the call registering equipment (9) of the main stopping place (HH) displays only keys for the destination floors allocated to the certain group of destination floors. The call registering …
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
- Granted October 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 2008.
- 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.