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:
Dec. 19, 1989
Filed:
Jun. 16, 1988
Erich Hoffmann, Bergisch-Gladbach, DE;
Robert Krups Stiftung & Co. KG., Solingen, DE;
Abstract
A coffee or tea making machine wherein the housing has a container for a supply of water and supports a holder for tea leaves or comminuted coffee beans. A conduit connects the outlet of the container with the holder, and a portion of such conduit is constituted by an electric heater which has one or more thick film conductors in series with an on-off switch and a relay which regulates the flow of current from an energy source to the thick film conductor or conductors. Such conductor or conductors can be applied directly to an insulating carrier which can be made of a ceramic or plastic material and defines a portion of the path for the flow of water from the container to the holder. Alternatively, the carrier can be made of a metallic material, such as aluminum, and then supports one or more insulating covers at least one of which carries a thick film conductor. The conductor or conductors are applied in the form of a paste which is caused to dry on the insulating carrier or on the cover or covers.