Acoustical broom
CA 2081485 A1 · Owner: Brazil, Harry · Inventors: Brazil, Harry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel acoustic broom is provided herein. The acoustic broom comprises an enclosed housing formed of a material which is transparent to wave energy, (e.g. acoustic energy e.g. a, synthetic plastic material). A plurality of ceramic plate-like, wave energy (e.g. acoustic energy) generators are disposed within the housing. Each of these generators consists of a cylindrical sub-housing formed of material which is transparent to the wave energy, and the ceramic plate-like generator of the wave energy is secured within the cylindrical sub-housing. The circular ends of the cylindrical sub-housing are sealed. Operator means are actuatable to act upon the ceramic plate-like wave energy (e.g. …
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 27, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 27, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 27, 2014.
- 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.