Machine and method utilizing thermal compensation
CA 2132963 A1 · Owner: Soroka, Daniel B. · Inventors: Sheehan, Terrence M.; Soroka, Daniel B.; Cady, Raymond C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In summary therefore, this invention is directed to a thermal growth detector and compensator for detecting and compensating for relative movement between a work holder of a machine tool and a tool holder that includes an elongated rod made of a material having a coefficient of thermal expansion of substantially zero that is attached at one end thereof to a part of a machine tool, and is attached at another end thereof to a part of a work holder on the machine tool. There is an element disposed at one end of the elongated rod for detecting movement of the rod, and an automatic compensation means is operatively connected to the movement detection element for automatically moving a tool …
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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 May 18, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 18, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 18, 2014.
- 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.