Magnetron with radially magnetized magnets and built-in pole shoes
CA 1050659 A · Owner: N.V. Philips Gloeilampenfabrieken · Inventors: Kerstens, Franciscus N. A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A resonant cavity magnetron with an axial output portion is provided with magnetic field producing means including radially magnetised permanent magnets. The magnets adjoin axially directed pole plates which pole plates convey the magnetic flux from the permanent magnets to pole shoes located with in the vacuum space of the magnetron. Each pole shoe and associated pole plate consist of a single piece of plate shaped material and may be formed by simple techniques like punching deep-drawing, folding and chasing. A lighter weight device which is simple to assemble results with lower manufacturing costs as well as reduced magnetic field leakage flux.
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
- Granted March 13, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 13, 1996.
- 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.