Form set-up
CA 1235921 A · Owner: Lee, Yuan-Ho · Inventors: Lee, Yuan-Ho
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An inner form set-up for use in forming a multisided upright concrete wall with inner and outer form setups. There is provided an arrangement for stripping the inner form set-ups which are formed with a multisided form wall. The arrangement comprises at least one wedge device dividing at least one side of the form wall into two portions and wedged in between the two portions in a first direction during casting. The wedge device is moved in a second direction opposite to the first direction after casting whereby to move the two portions closer to one another so that the inner form set-up contracts and is therefore entirely spaced from the cast concrete.
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 May 3, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 3, 2005.
- 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.