Crane control
CA 2001046 A1 · Owner: Fischer, Christoph · Inventors: Fischer, Christoph; Fischer, Christoph
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A crane control for a swing crane which crane has a hoisting gear a, boom being rotated by a swing mechanism and having a working range determined by the position of the trolley moving on the boom and driven by a trolley drive, has a single channel control logic with programmable memory in which memory critical data corresponding to marginal movements ant/or loads of a hoisting gear and marginal movements of a trolley drive are stored. The hoisting gear and the trolley drive are provided with sensors which transmit signals proportional to the movements of the trolley or the loads suspended by the hoisting gear. The programmable control logic controls the hoisting gear and the trolley drive …
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 October 19, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 19, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 19, 2011.
- 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.