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:
May. 24, 1988
Filed:
Mar. 30, 1987
Applicant:
Inventors:
Frederick C Wear, St. Louis County, MO (US);
Garret G Heil, St. Louis County, MO (US);
Howard F McKinney, St. Louis County, MO (US);
Assignee:
McDonnell Douglas Corporation, St. Louis, MO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
219 / ; 219 / ; 219 / ; 34-1 ;
Abstract
In a microwave drying cavity, a thermal radiator provides infrared radiation that complements the microwave radiation in effecting a more uniform drying of a product within the cavity. The radiator includes a metal plate having apertures of a trifoliate configuration and electrical resistance-type heaters embedded in the plate. The trifoliate apertures permit microwave radiation of universal polarization to pass through the plate, so the radiator may be placed close to the product without shielding the product from the microwave radiation.