Pellet dispensing unit
CA 2071844 C · Owner: Roos, William N. · Inventors: Blatnik, Frank A.; Roos, William N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device for dispensing pellets. The problem with corrosive pellets is that the corrosive fumes come in contact with the operator. The device affords connection between a container of pellets and a motor and rotor which is placed inside a protective housing. A container (18) of pellets is attached to a motor and rotor assembly (14) while the container (18) is in an upright position. The container (14) is then inverted and the motor and rotor assembly (14) are placed in a protective housing (11). The motor (28) is also electrically connected (40, 41). Plastic foam (31) is used for a housing (43) for the motor and rotor assembly (14) to protect it as well as, a, circuit board (30).
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 24, 1990 and granted December 8, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 24, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 24, 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.