Sampler for solid materials
CA 2012621 C · Owner: Rice, Grant G. · Inventors: Rice, Grant G.; Wenshau, Hugo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A wood chip sampler is provided which is capable of extracting a repeatable and reliable sample of wood chips or similar particulate material from a product stream. The apparatus includes a sampling probe which has a slot which allows the product to enter the sampling probe. The probe is driven into the product stream with the slot in a six o'clock position rotated, through the twelve o'clock position to allow the product to enter the sampling probe, and then rotated to place the slot in a three o'clock position, and then retracted from the product stream into a housing. Once retracted, the probe is again rotated to place the slot in a six o'clock position, allowing the sampled material to …
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 20, 1990 and granted December 27, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 20, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 20, 2012.
- 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.