Security device for conveying systems with unmanned vehicles
CA 1305547 C · Owner: Digitron Ag · Inventors: Hafner, Rudolf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A security device for conveying systems with unmanned vehicles, for monitoring a given area. The security device comprises at least two oppositely directed light barriers associated with said given area and each of said at least two light barriers comprises means for emitting a light-beam, first means for reflecting said light-beam and means for receiving said reflected light-beam. The at least two light barriers are disposed such that their light-beams are interrupted by objects entering said given area. Second means for reflecting said light beams are arranged laterally on object which are allowed to enter said given area thereby making these objects undetectable for the security device.
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 July 21, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 21, 2009.
- 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.