Improvements relating to electrically heated water boiling vessels

• Main Authors: J.A. HOWARTH, R.A. O'NEILL
• Format: Patent
• Language: English
• Published: 31.10.2001
• Edition: 7
• Subjects: APPARATUS FOR MAKING BEVERAGES; COFFEE MILLS; DOMESTIC ARTICLES OR APPLIANCES; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FURNITURE; HUMAN NECESSITIES; KITCHEN EQUIPMENT; SPICE MILLS; SUCTION CLEANERS IN GENERAL

A thick film heating element having a portion of its resistive track within a defined part of the surface area of the heating element formed of a material having a negative temperature coefficient of resistance (NTCR) and having the main part of the track formed of a material having a positive tempe...