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:
Apr. 06, 1999
Filed:
Mar. 17, 1997
John Duncan McNair, Yuen Long, HK;
Chiaphua Industries Limited, Hong Kong, HK;
Abstract
A vacuum coffee maker has a starved electric heating arrangement having a solid body providing a reservoir. The chamber is covered by a circular lid that prevents flow of steam directly vertically up a tube from the chamber. At the end of a normal heating cycle, the temperature of the body rises rapidly and power supplied to a heating element is automatically turned off under the control of a thermostat. The heating arrangement is used without alteration (e.g. to the setting of the thermostat) to keep-warm hot coffee in a lower container after the end of the normal heating coffee-making cycle. The effect of having the lid is that during a keep-warm function, the reservoir is generally starved of liquid because any liquid entering the reservoir is immediately evaporated and this restricts flow of more liquid into the reservoir and hence starves the reservoir.