Safety circuit arrangement for lifting/tilting or tilting devices
CA 2013604 C · Owner: Zoller-Kipper Gmbh · Inventors: Pieperhoff, Hans Joachim
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
To prevent the manipulation of switches such as flap and acknowledgment signal switches provided for the safety of the operating personnel, these switches are connected to a current flow monitor 25 which is electrically connected to the automatic control unit 30 for the automatic emptying of containers, in particular of garbage cans into collection bins. This current flow monitor 25 transmits a clear signal to the automatic control unit 30 only if the switches 11 and 16 are in their intended position. In addition other safety, switches may be provided such as an upper and a lower, reference switch 9 and 32. Furthermore the current flow, monitor 25 is connected to a barrier switch 13 and …
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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
- Filed April 2, 1990 and granted May 23, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 2, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 2, 2012.
- 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.