A spinner head having flow restricting inserts
CA 2290692 C · Owner: Abdi, Mesfin B. · Inventors: Abdi, Mesfin B.; Frisbee, Steven E.; Rutkowski, William F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A spinner head (10) is used for spinning and processing feedstock material. The spinner head includes paced tubular heating elements (20) which are covered by annular housing (42) that forms a material processing wall. The annular housing (42) contains radially spaced slots (48) which provide a passageway for the material to be expelled from the spinner head. Each slot contains a flow restricting insert removably insertable therein. The inserts include radially extending grooves which channel the feedstock material as it exits the spinner head. The inserts further include latches extending therefrom which secure the inserts in the spinner head upon rotation.
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 May 28, 1998 and granted May 6, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 28, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 2020.
- 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.