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:
Sep. 04, 2001
Filed:
Jul. 12, 2000
Bruce E. Hyllberg, Gurnee, IL (US);
American Roller Company, Union Grove, CT (US);
Abstract
A thermal conduction roller (,) has a tubular roller core (,) with an inside surface; and an electrical insulator coat (,) primarily of zirconia on the inside surface, a heater coat (,) of titania or a titania blend is disposed over the insulator coat (,), and at least two electrical contact assemblies that are disposed inside the roller and electrically connect to the heater coat (,) as the roller (,) is being rotated. One embodiment utilizes an electrical insulator coat (,) in a range of thickness from about ten mils to about twenty mils. A thinner coat may not have sufficient dielectric strength, while a thicker coat decreases thermal conduction. A release material (,) is applied to the outside of the roller (,). Various contact structures according to the present invention are also described in detail, including one especially adapted to connect to a three-phase power supply.