Method and apparatus for forming concrete products
CA 2184071 A1 · Owner: Schmitt, Robert A. · Inventors: Aaseth, Allen; Schmitt, Robert A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A mold box (85) is flexibly mounted to a product forming machine having upper and lower vertically displaceable beams (26 28). A feed drawer (14) dispenses concrete material into the mold box while a vibration system (15) vertically vibrates the mold box while dampening horizontal vibration. The vibration system is driven by a single drive shaft (111) that actuates first and second vibrator rods (90) while at the same time rotating a counter-weight (121) in a counter-rotating direction. A set of alignment brackets (87) lock the mold box into a predetermined aligned relationship while being mounted in the product forming machine. The bottom side of each mold box is mounted to the product …
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
- Filed November 16, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 16, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 16, 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.