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:
Aug. 30, 1983
Filed:
Nov. 18, 1980
Applicant:
Inventors:
Benny Berggren, Vallingby, SE;
Goran Boling, Taby, SE;
Assignee:
Stiftelsen Institutet For Mikrovagsteknik, Stockholm, SE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
219 / ; 219 / ;
Abstract
A device for microwave heating, including a wave guide, in which a material is intended to be heated, and a microwave source connected to the wave guide. The wave guide includes a portion wherein its cross-sectional area decreases continuously from the end of that portion located closest to the microwave source to the other end of the portion part, and along that portion the wave guide includes a portion with a geometry, at which fed-in microwave energy no longer can propagate in the wave guide, i.e., the wave guide proceeds continuously to so-called cut off at a certain distance from the narrower end of the part.