Inspection scaffold of large component for boiler and building method thereof
CA 2529755 C · Owner: Kawaguchi, Shigeyoshi · Inventors: Nakamitsu, Kazuhito; Sagawa, Sinnichi; Kawaguchi, Shigeyoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A scaffold assembling of a large component for a boiler requiring inspection is not performed by a high-place work but assembled safely and in a short time. The scaffold is assembled to the large component for the boiler supported by a component supporting beam at the ground side before it is attached to a steel frame main-beam 16. Scaffold lifting/supporting beams interposing coil spaces of a superheater 14 are suspended on wires 36 lifted down from spaces of a ceiling tube wall 34 being a horizontal member of the superheater 14. The scaffold lifting/supporting beams 32 are lifted to raise little by lithe within the superheater and scaffold components are assembled sequentially toward …
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
- Filed December 9, 2005 and granted May 15, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 9, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.