Curvilinear escalator
CA 1202265 A · Owner: Mitsubishi Denki Kabushiki Kaisha · Inventors: Sugita, Kazuhiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A curvilinear escalator comprises in combination: a, main frame having an arcuate shape in the horizontal plane of projection and disposed in inclined condition the main frame having a forwarding way formed on the top surface side thereof, a turning section at one distal end part of the main frame in the longitudinal direction thereof, and a return way on the bottom surface side thereof to thereby construct an endless conveying path; a plurality of steps continuously disposed in the conveying path and guided therealong, each of the steps being in a sector shape; a pair of step chains disposed at both sides of the steps on the edge part in the breadthwise direction thereof and provided along …
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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 March 25, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 25, 2003.
- 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.