Apparatus for the distribution of particulate material upon a surface
CA 2112784 C · Owner: Laroche, Pierre · Inventors: Laroche, Pierre; Cherton, Yvan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus is described for the distribution of particulate material such as glass beads onto a marking of paint or the like on a road surface the, apparatus comprising a housing, an upper chamber within the housing for the receipt, of the beads, a lower chamber within the housing having a downwardly directed opening and a dosing roller positioned between the upper and lower chambers to, allow the beads to pass in a controlled manner from the upper chamber to the lower, chamber. At least one distribution grid is positioned in the lower chamber. The, apparatus is able to dispense the glass beads at a uniform rate and evenly over the, width of the marking, without spillage of the beads …
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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 January 4, 1994 and granted March 19, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 4, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 4, 2016.
- 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.