Apparatus for effecting movement of a scaffolding stage
CA 1266697 C · Owner: Costello, Colm James · Inventors: Costello, Colm James
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides apparatus for effecting movement of a scaffolding stage. A scaffold tower is moved horizontally so as to be supported on movable guides which are in a lowered position. The movable guides are then moved upwards. When the movable guides have reached an upper position, the scaffolding is then moved horizontally in the opposite direction so as to be supported on fixed guides. The operation is repeated as often as necessary. As stages are elevated further stages are erected one by, one below the stages being erected. The apparatus may also be operated to lower a scaffold tower, while collapsing stages one by one.
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 March 13, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 13, 2007.
- 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.