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. 26, 1989
Filed:
Aug. 31, 1988
Gotthard C Mahlich, Kronberg, DE;
Michael Borgmann, Solingen, DE;
Robert Krups Stiftung & Co. KG, Solingen, DE;
Abstract
An electric coffee or tea maker wherein a supply of water softening agent is installed in the region of the outlet of a water tank so that the stream of water which is discharged by the tank when the maker is in use is acted upon by the softening agent before it enters the conduit or conduits which convey the stream through an electric heater and thereupon into a receptacle for comminuted coffee beans or tea leaves. This prevents gradual clogging of the conduits with boiler scale. The supply of softening agent can be replenished or replaced. This is determined by looking through an observation window so as to ascertain the color of the softening agent. The color is indicative of the condition of the softening agent, i.e., whether or not the softening agent is still capable of performing its water-softening function.