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. 13, 2001
Filed:
Aug. 21, 1998
John Thomas Hughes, Stanford Bridge, GB;
Ceramaspeed Limited, , GB;
Abstract
A method of manufacturing an electric heater assembly with a plurality of electric heating units includes the steps of providing a tray-like support (,) and moulding microporous thermal and electrical insulation material into the support. The tray-like support (,) is formed with a number of dish-like recesses (,), each dish-like recess comprising a base (,) and a surrounding wall (,). The microporous thermal and electrical insulation material is moulded into each dish-like recess to form a base layer (,) against the base (,) of each dish-like recess and an upstanding wall layer (,) against the surrounding wall (,) of each dish-like recess, the base layer (,) being formed integrally with the wall layer (,). At least one electric heating element (,) is provided in each dish-like recess (,), the heating element being supported on or adjacent to the base layer (,). The electric heater assembly is adapted for use behind a plate (,) to provide a plurality of discrete heating zones on the plate.