System for transmitting and/or controlling rotary motion
CA 1062180 A · Owner: Dulondel, Jacques · Inventors: Dulondel, Jacques; De La Messuziere, Philippe
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The machines of the present invention are adapted to brake a rotor or pulley by the action of centrifugal weights or units which are arranged to produce a reactive braking action on the rotor or pulley. In one application the machine constitutes a fire escape pulley device including a pulley on which a cable is wound to rotate the pulley under the load of a person suspended by the cable. A rotor bodily rotates with the pulley; a stationary annular cable arranged around the rotor and defines a radially undulating cam surface lacing radially inward toward the rotor, and one or more centrifugally responsive units are radially displaceable on the rotor to be centrifugally biased into rotation …
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 11, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 11, 1996.
- 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.