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:
Jun. 09, 1981
Filed:
Nov. 13, 1979
Norman A Johnson, Lititz, PA (US);
Raymond C Kent, Lancaster, PA (US);
Armstrong Cork Company, Lancaster, PA (US);
Abstract
An electric air stream heater adapted to operate directly on 120 volts with a wattage output of less than 500 watts without the need for any special control module, comprising, a cylindrical heating assembly having at least two spaced apart, parallel electrically connected lengths of crimped metallic foil provided with electrical power connections and secured to an insulating backing and rolled around an insulating core. Ceramic pins and a thermostatic control element which extend radially through the heating unit provide respectively, support means to prevent sagging of the heating elements in use and a means for detecting heat build-up across a large cross sectional area of the heater while creating a minimum of air flow resistance.