Plate link chain comprising an inspection plate for verifying an unacceptable chain length
CA 2338183 A1 · Owner: Bahr, Thomas · Inventors: Bahr, Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a plate link chain which is used as a conveyor chain especially for a bucket elevator or similar conveying means and which is , comprised of at least two parallel strands of individual plates arranged as inner plates and outer plates (11). The individual plates are connected to one another by chain pins (13) which are arranged in a transversal manner with regard to the plane of the plate. At least one additional plate is arranged between two adjacent chain pins (13) on the outer side of the corresponding outer plate (11) of a chain strand. One end of said additional plate (16) is placed on one chain pin (13), and the other end is placed on the adjacent chain …
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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 July 15, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 15, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 15, 2021.
- 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.