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US 2004/0000438 A1Published application
Scale having a capacitive proximity switch with an electrode
AssigneeSoehnle-Waagen GmbH & Co.
InventorKlaus Stree
Life of this patent
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Abstract
A scale is provided which includes a support plate for holding a mass to be weighed, and an electrical switch device for selecting or dialing a function of the scale. The electrical switch device has a capacitive proximity switch with an electrode disposed on the support plate. The capacitive proximity switch monitors an ambient capacitance of the electrode, and reacts solely to the approach of an object (such as a human foot) whose dielectrical properties are different from those of the stationary environment of the proximity switch.
Claims7
A scale comprising:
- a support plate for holding a mass to be weighed;
- and
- an electrical switch device for selecting or dialing a function of the scale;
- wherein the electrical switch device comprises a capacitive proximity switch and an electrode disposed on the support plate, and the capacitive proximity switch monitors an ambient capacitance of the electrode.
1 more element
A scale comprising:
- a support plate for holding a mass to be weighed;
- and
- a first electrical switch device for selecting or dialing a first function of the scale;
- a second electrical switch device for selecting or dialing a second function of the scale;
- wherein each of the first and second electrical switch devices comprises a capacitive proximity switch and an electrode disposed on the support plate, and the capacitive proximity switch monitors an ambient capacitance of the electrode;
- and
- wherein the first and second electrical switch devices are disposed in different regions of the support plate and switch different functions of the scale.
4 more elements
Dependencies are inferred from the claim text.