An axial tensioned bolting system and method thereof
CA 2274917 A1 · Owner: Siemens Westinghouse Power Corporation · Inventors: Gosling, Martin C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A bolting system for securing at least two structures having a bolt a , coupling nut, a hydraulic tensioner and a lock nut. The bolt has a body with a threaded end and another end with a bolt head. The coupling nut is engageable with the threaded end of the bolt and has a top face having one or more dog indentations. The hydraulic tensioner has a hydraulic cell with an engagement end that engages the threaded end of the bolt. The hydraulic cell stretches the bolt while an engaging member of the hydraulic tensioner engages the dog indentations of the coupling nut with complementing engaging member , dogs. The engaging member rotates the coupling nut while the engagement end of the …
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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
- Filed December 12, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 12, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 12, 2019.
- 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.