Hollow building block and building block system
CA 1181610 A · Owner: Asbjorn, Buen · Inventors: Asbjorn, Buen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The hollow building block has spaced side walls (20, 30) interconnected by integral webs and end walls (32, 32a). In the vertical and horizontal edge surfaces of the side walls tongues (2 2a) and, grooves (1a) are provided adapted to be engageable with grooves and tongues of adjacent blocks. The end walls are recessed and have cutouts to form after assembly communicating vertical and horizontal passages for receiving reinforcing members and to be filled with concrete. The building block system comprises module blocks, half module blocks quarter, module blocks, corner blocks, insulating blocks closure elements and adaptor elements.
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 January 29, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 29, 2002.
- 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.