Working robot for heat exchanger and method of operating it
CA 2294125 C · Owner: Fujimura, Takashi · Inventors: Fujimura, Takashi; Komada, Shuji; Takahashi, Hirotaka
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A robot body (21) is carried into the water chamber (2A) of a condenser (1) and disposed on a tube sheet (4) through which a number of narrow tubes (3) open. Inner nozzles (23) are inserted into narrow tubes (3) from working devices (24) installed on the front ends of four combined-use arms (22A through 22D) to position and fix the robot body (21). And the arm turning motors (25) and arm extending and contracting.cylinder devices (26) of the combined-use arms (22A through 22D) are driven to move the robot body (21). Further, a cleaning brush (12) and a flaw detection probe (13) are inserted into a narrow tube (3) from each working device (24) and moved along the narrow tube (3) by means of …
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 April 19, 1999 and granted October 8, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 19, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 19, 2021.
- 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.