Rapid moulding of long concrete poles
CA 2266775 A1 · Owner: Vertech Hume Pty Ltd · Inventors: Hume, Graeme Reginald
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention discloses apparatus for moulding an elongate annular product such as a pole, the apparatus including two outer mould sections (1) relatively movable to form in a first position a substantially enclosed upright moulding cavity and in a second position opening said moulding cavity an upright core member (3) is movable into and out of said moulding cavity and when located in said moulding cavity defining an annular moulding zone (37) between the core member (3) and the outer mould sections (1) filling means , (5) arranged to fill the annular moulding zone (37) from below and end , capping means (6) arranged to close an upper end region of the moulding zone (37), the …
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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 September 22, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 22, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 22, 2019.
- 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.