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US 8,692,160 B2Granted
Temperature controlled displays
AssigneeHolmes Catering Group Limited
InventorMartin Brown
Life of this patent
Estimating the term…
Abstract
A heated counter for service of hot food has one or more hotplates, a light source illuminating each hotplate and a number of light sensors below each hotplate. When a sensor is obscured by a dish of food, power is supplied to that hotplate, and when no sensor is obscured, that hotplate is kept in stand-by mode.
Claims13
A heatable display counter comprises at least one heatable area;
- a power supply means connectable to each heatable area;
- a radiation source incident over substantially the whole of each heatable area;
- and below each heatable area at least one radiation sensor;
- arranged so that when no radiation sensor below a heatable area is obscured, the power supply means to that area is maintained at stand-by level, and when at least one radiation sensor is obscured, the power supply means to that heatable area is increased.
1 more element
Dependencies are inferred from the claim text.