Elevator machine
CA 1322338 C · Owner: Heikkinen, Urho · Inventors: Heikkinen, Urho
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In an elevator machine consisting of a drive motor, a drive shaft driven by the motor a gear assembly to, reduce the rotational speed of the motor a brake, and a, traction sheave transmitting the motion to the elevator car and counterweight by means of ropes, the drive shaft being supported at its ends by bearings, one of which is constituted by the toothing between the drive shaft and one or more intermediate gears belonging to the gear assembly the gear assembly is located inside the traction sheave and the bearing arrangement at one end of the drive shaft comprises a self-aligning bearing and a self-aligning coupling between the motor and the drive shaft.
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 September 21, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 21, 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.