Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Electric heating element










Image Number 2 for United States Patent #4233497.

An electric heating element for a cooking apparatus or other device requiring uniform heat generation over an extended area is presented in which the thickness (T) of the electrically resistive heating element increases from the outer edges of the generally disc-shaped element towards the center in inverse proportion to the square of the ratio of the radius (r) at any point to that of the radius at a reference point ("a"), so that ##EQU1## Heating elements fabricated with cross sectional shapes calculated in accordance with the parameters set forth above and disclosed in detail herein and in which the current flow is radial, provide uniform energy release and therefore nearly uniform heat across the surface of the element. Additionally, the absolute element dimensions and masses per unit surface area are small, maximizing rates of desired temperature setting changes. The basic principle is applicable in several technologies related to cooking, e.g., vacuum evaporation.








 
 
  Recently Added Patents
Benzimidazole inhibition of biofilm formation
System, method, and software for researching, analyzing and comparing expert witnesses
Light source lighting device including a constant-current supply that is connected to a light source and supplies a constant current of a substantially constant magnitude to the light source,
Lubricant coating device and image forming apparatus
Bandpass filter and radio communication module and radio communication device using the same
Determining ill conditioning in square linear system of equations
Creation and use of test cases for automated testing of media-based applications
  Randomly Featured Patents
Crib safety sheet/blanket
Deep-sea fishing reel with friction unwinding device
Fuel filter heat regenerator
Organic electro-luminescent display and fabrication method thereof
QPSK/QBL-MSK waveform enhancement
Drug eluting lead systems
Positive airway pressure system and method for treatment of sleeping disorder in patient
Composite hollow fiber
Depth correlation device for fiber optic line
Power semiconductor device