Internal holddown for single rod stoker
CA 2200285 C · Owner: Mann, John · Inventors: Mann, John; Greenall, Alan V.; Audy, Patrick
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A stoker rod assembly employs a stoker rod having a longitudinally extending bore. A holddown device has a base which is mounted in the trough of the discharger floor, an engagement assembly which is inserted through a slot in the bottom wall of the stoker rod and a connecting part extending between the base and the engagement assembly. The slot comprises a first region having a width selected to allow the passage of the engagement assembly into or out of the bore. A second longitudinally extending region has a width selected to allow longitudinal movement of the connecting part. The width of the engagement assembly is greater than the width of the second region, wherein the engagement …
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 March 18, 1997 and granted April 24, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 18, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 18, 2019.
- 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.