Material compaction arrangement for use in the manufacture of rigid beams
CA 2000452 A1 · Owner: Andersson, Curt · Inventors: Andersson, Curt; Andersson, Curt
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a material-compacting apparatus for use in a plant in which a rigid elongated element or beam (4) is manufactured from loose material (2) moistened with a binder. The apparatus comprises a compaction section (7) in which batches of loose material moistened with binder are compacted a heating, section (5) in which the compacted batches are dried and a transport arrangement which functions to move each compacted material-batch (2b'', 2b''', 2a) through the heating section (5). The compaction section (7) has mounted therein a rod-like member (23) whose end surface, or cross-sectional surface, is such that the member (23) will compact the foremost material-batch and …
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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 October 11, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 11, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 11, 2011.
- 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.