Prefabricating concrete arches in adjustable mould of jointed sections
CA 1289342 C · Owner: Muelas-Medrano, Santiago · Inventors: Vidal, Henri; Muelas-Medrano, Santiago
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Moulding process, Apparatus for moulding prefabricated curved concrete sections for use in the construction of arched or vaulted structures comprises a curved, upwardly convex mould made up of a series of reusable substantially flat mould plates pivotally supported by vertical pillars of adjustable height. The mould plates are hingedly connected to each other such that the angle of each plate to the adjacent plate is adjustable. The spacing between the vertical pillars is also adjustable, so that the mould plates provide a polygonal mould surface adjustable for moulding prefabricated concrete sections of different curvatures.
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
- Granted September 24, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 24, 2008.
- 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.