Apparatus and method of transporting flats across a scale
CA 2002216 C · Owner: Pirc, Vladimir V. · Inventors: Alesi, Thomas W. Jr.; Pirc, Vladimir V.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A mechanism for transporting flat articles such as, envelopes, onto and across the tray of a scale. A belt is trained about a combination of rollers received within slots of the tray which in combination with clamps supported by the tray are used to transport a flat onto the weighing scale. When a flat is to be weighed, it is transported onto the tray, the rollers are withdrawn below the tray by the belt and the clamps hold the flat securely against the tray. The tray is then oscillated and the weight of the flat is determined from the harmonic period of oscillation. Upon completion of weighing, the belt is placed into contact with the flat and rotated to remove the flat from the tray.
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 November 3, 1989 and granted October 10, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 3, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 3, 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.