Elevator system
CA 1096074 A · Owner: Westinghouse Electric Corporation · Inventors: Mandel, Alan F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
46,639, ELEVATOR SYSTEM, ABSTRACT OF THE DISCLOSURE An elevator system including an elevator car mounted for movement in a structure to serve the floors therein, and a car position indicator for displaying the position of the car in the structure. The car position indicator displays the car position according to a first mode during normal system operation, and in response to the, car becoming disabled it switches to a second display mode, which more accurately indicates the position of the elevator car relative to the structure.
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 February 17, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 17, 1998.
- 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.