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Expired Canadian patentCanada

System for handling garbage or waste

CA 1338472 C · Owner: Ab Centralsug · Inventors: Forsberg, Yngve; Hyden, Hans

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

The present invention relates to a method for removing and transferring refuse from serving trays which on conveyor belts are carried past different stations for removing dirty dishes, removing refuse and washing the trays. According to the invention a vacuum is produced in a suction nozzle provided immediately adjacent the path along which the trays are conveyed, and the refuse is transferred through a transfer duct which is connected to the nozzle and through which the vacuum is produced at the nozzle. The invention also relates to an installation for performing the method.

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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 July 23, 1996. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 23, 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.
FiledApril 8, 1988
GrantedJuly 23, 1996
Term endedJuly 23, 2013
Patent numberCA 1338472 C
Classification (IPC)B65G53/24 +2 more

Timeline

Timeline From CIPO dates

198919921995199820012004200720102013Application filedApril 8, 1988Patent grantedJuly 23, 1996Term endedJuly 23, 2013

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.