Vibration suppressing device for elevator
CA 1323846 C · Owner: Otis Elevator Company · Inventors: Saito, Saburo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Vibration Suppressing Device for Elevator An elevator rope guide assembly prevents or lessens vibration of the ropes connected to the cab by means of auxiliary guide roller pairs disposed on either side of the cab sheave. Additionally the cab, sheave has rope-engaging grooves which are substantially deeper than the diameter of the rope and include outwardly divergent sides.
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 November 2, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 2, 2010.
- 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.