Device for crushing pills and the like
CA 2046644 A1 · Owner: Green, Frank A. · Inventors: Green, Frank A.; Green, Frank A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rotatable crusher wheel (22) is mounted in a housing (21) and receives pills via an opening (32). Rotation of the wheel (22) creates a crushing action on the pills which is facilitated by, projections on the wheel periphery and on the confronting internal walls (31) of the housing. The powder formed by the crushing action then falls into a receptacle (24) which can be detached for subsequent removal and use of the powder. The housing comprises two components (23, 24) which together define a bearing for an axle (27) of the wheel (22), the components being separable to allow insertion of the wheel during initial assembly of the device.
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 February 9, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 9, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 9, 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.