The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 13, 1982
Filed:
Nov. 27, 1979
Gerd Naumann, Hannover, DE;
Bernd Treine, Hannover, DE;
Hermann Berstorff Maschinenbau GmbH, An der Breiten Wiese, DE;
Abstract
A method and apparatus for matching a microwave heater to reduce the microwave energy reflected by the load, wherein microwave energy from a microwave energy source is supplied to a treatment chamber by a hollow waveguide of rectangular section. A directional coupler in the waveguide prevents reflected energy returning to the source and directs it to absorption means. A detector is provided at the absorption means to measure the reflected energy and produce a signal, and control means is provided to operate control motors to operate tuning pins provided in the waveguide, the control motors having different operating speeds.