Grill assembly of cyclone dust collecting apparatus for vacuum cleaner
CA 2387770 A1 · Owner: Oh, Jang-Keun · Inventors: Oh, Jang-Keun; Park, Jung-Seon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A grill assembly of a cyclone dust collecting apparatus for a vacuum cleaner capable of improving dust collecting function of the vacuum cleaner by preventing dust from being drawn to a vacuum-generating device after passing through a grill. The grill assembly is disposed at an upper part of an air discharge passage of a cyclone body for separating dust from a whirling air current by a centrifugal force by forming the whirling air current from a drawn air, and the grill assembly prevents dust from being drawn to a vacuum-generating device of the vacuum cleaner. The grill assembly comprises a grill body having a plurality of passages formed therein and filtering means disposed along an …
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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 May 28, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 28, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 2024.
- 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.