Foods and beverages: apparatus – Beverage – Infusors
Patent
1988-07-07
1989-05-09
Jenkins, Robert W.
Foods and beverages: apparatus
Beverage
Infusors
99285, 99295, 219308, 219333, A47J 3100
Patent
active
048278378
ABSTRACT:
For a coffee brewing machine, an indicating system which operates to notify the user when it is time to clean the water supply conduit of accumulated mineral deposits. When a self contained removable reservoir is inserted into its operative position connecting to the water supply conduit, it closes the contacts of a temperature sensitive switch. During normal operation, the switch opens when water is depleted from the reservoir and the brewing cycle is completed. However, if the switch opens while water remains in the supply conduit upstream of the heater mechanism, this is a sure indication that there is a substantial accumulation of mineral deposits in the supply conduit. Thus, a sensing mechanism is employed to detect the presence of water in the supply conduit after the temperature sensitive switch opens, and a lamp is energized to indicate the condition. In one embodiment, the sensing operation is performed by an electromechanical device, and in another embodiment by logic circuitry.
REFERENCES:
patent: 4139761 (1979-02-01), Obrowski
patent: 4141286 (1979-02-01), Smit
patent: 4214148 (1980-07-01), Fleishhauer
patent: 4292499 (1981-09-01), Kleinschmidt et al.
patent: 4608916 (1986-09-01), Becker et al.
patent: 4713525 (1987-12-01), Eastep
Magazine Article, Source unknown, dated 12/7/87 entitled "Bosch Takes Automotive Acumen into U.S. Kitchen Product Arena"; of interest: Smarty indicator light.
Johnson Paul D.
Kubicko Robert E.
Martone Louis C.
Moores Gregory E.
Black & Decker Inc.
Jenkins Robert W.
LandOfFree
Calcification indicator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Calcification indicator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Calcification indicator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-81514