Scooping drum type sand washer
CA 1057703 A · Owner: Masuda, Masahisa · Inventors: Masuda, Masahisa
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
SPECIFICATION, Title of the Invention: SAND WASHER Abstract of the Disclosure:, A sand washer for washing muddy sand charged into a rotating drum with the supply of water comprises a plurality of annular chambers formed in the drum a plurality of scoop-, ing plates held within each of the annular chambers draining, members provided for the scooping plates and chutes secured, to a base and associated with the annular chambers independently of the drum motion, so that the muddy sand is washed and the washings drained off a plurality of times. - 1 -
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
- Granted July 3, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 3, 1996.
- 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.