Safety device to prevent the lifting of scaffolding
CA 1164512 A · Owner: Langer, Ruth · Inventors: Langer, Ruth
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to an improved safety device which prevents the lifting of walk-planks which are secured by means of jaws or hooks to cross-brackets of scaffolding The, device comprises a rail which is adapted to be laid over the jaw and has at least one hook-shaped attachment element which fits through a corresponding hole in the web of the cross-brackets The device prevents any lifting of the jaws away from the crossbrackets and has eliminated the need for longitudinal brackets yet maintains a high degree of safety as the walk-planks act as horizontal stiffening elements. It therefore has effectively simplied the construction of scaffolding while maintaining a high degree of …
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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 27, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 27, 2001.
- 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.