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:
Jan. 07, 1986
Filed:
Aug. 01, 1984
Applicant:
Inventor:
Nathaniel E Hager, Jr, Lancaster, PA (US);
Assignee:
Armstrong World Industries, Inc., Lancaster, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F24H / ; H05B / ;
U.S. Cl.
CPC ...
219347 ; 219349 ; 219345 ; 219200 ; 338280 ;
Abstract
The invention is an elongated radiant electrical heater. An elongated parabolic shaped reflector has mounted at its focal point a ribbon heater. A thermal insulation material is mounted on the side of the ribbon heater opposite from the side of the focus where the reflector is positioned. The radiant ribbon heater is deeply corrugated with the height of each corrugation being a multiple of two to three times the width of each corrugation whereby the deep corrugations not only provide mechanical strength, but also increase effective emission per unit area of the radiant heating element.