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:
Nov. 01, 2022
Filed:
Oct. 07, 2020
Watlow Electric Manufacturing Company, St. Louis, MO (US);
Satya Tatavarthy, St. Louis, MO (US);
Ethan Dinauer, St. Louis, MO (US);
Sanhong Zhang, Ballwin, MO (US);
Scott Boehmer, Hannibal, MO (US);
WATLOW ELECTRIC MANUFACTURING COMPANY, St. Louis, MO (US);
Abstract
A heater assembly includes a continuous series of perforated helical members and a plurality of electrical resistance heating elements. The perforated helical members cooperate to define a geometric helicoid disposed about a longitudinal axis of the heater assembly. Each perforated helical member defines opposed edges and a predetermined pattern of perforations. The perforations extend through each perforated helical member parallel to the longitudinal axis. The heating elements extend through the perforations.