Method of manufacturing a rotating anode x-ray tube
CA 2087877 C · Owner: Kabushiki Kaisha Toshiba · Inventors: Sugiura, Hiroyuki; Anno, Hidero; Ono, Katsuhiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of manufacturing a rotating anode X-ray tube comprises the steps of: providing an anode structure having a rotary axis and an anode target; providing a rotary structure to which the anode target is fixed and a stationary structure for rotatably supporting the rotary structure, one of the rotary and stationary structures having an opening; injecting a liquid metal lubricant having a predetermined volume through the opening into one of the rotary and stationary structures; applying liquid metal lubricant to dynamic pressure type bearing sections having helical grooves and bearing gap and positioned between the rotary and stationary structures and to a reservoir communicated with …
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 January 22, 1993 and granted January 12, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 22, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 22, 2015.
- 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.