Plastic conveyor belt with integral sideplate
CA 2093807 C · Owner: Palmaer, Karl V. · Inventors: Palmaer, Eric K.; Palmaer, Karl V.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A plastic conveyor belt (10) formed of a large number of plastic belt modules (12 13, 14) includes outer belt modules, having integral sideplates (24). The sideplates are of heavier material and higher strength for withstanding stress around the outside of curves and for withstanding edge wear in certain types of conveyor systems. In a preferred embodiment each sideplate (24), has a depending guide member (50) which may include a hold down tab (51). In one embodiment plastic connecting rods (31, 32), which serially connect belt modules are discontinuous in length made up of several coaxial pieces which are held in place by press fitting at the outer ends. This enables the rod (31 32) to be …
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 October 7, 1991 and granted August 18, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 7, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 7, 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.
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.