Gearless drive machine for lifts
CA 2043918 C · Owner: Inventio Ag · Inventors: Vertesy, Josef; Cholinski, Andrzej
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In this gearless drive machine for lifts a machine frame (1) arranged, on a counter roller carrier (2) carries a bearing block (3) and an end plate block (4). An adjustable cable strand spacing can be made by means of the machine frame (1) and a counter roller (5) arranged at the counter roller carrier (2), whereby a left-hand and right-hand overhang of the counter roller (5) is possible with the same build-up of the machine frame. A main shaft (6) is borne at two places at the drive output side by means of a loose bearing, (7) arranged at the bearing block (3) and a fixed bearing (8) arranged at the end plate block (4). A drive pulley (9) with brake disc (10) is provided between the …
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
- Filed June 5, 1991 and granted September 4, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 5, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 5, 2013.
- 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.