Volumetric-to-gravimetric-to-volumetric converter scale
First Claim
1. A converter scale comprising:
- transducer means for producing an electric signal (W) corresponding to the weight of a material placed on the scale,means for converting said signal (W) corresponding to weight to a signal (V) corresponding to the volume of said material, anddisplay means responding to said signal (V) corresponding to volume by displaying information indicative of said volume.
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Abstract
A scale adapted for performing recipes in which the ingredients are given in customary volumetric measures such as cups, tablespoons and teaspoons. The user enters the name or code number of an ingredient which is displayed by the scale. The amount of the ingredient is displayed in volumetric terms or in terms of weight if desired. A processor in the scale accesses the volume-to-weight (V/W) ratio or weight-to-volume (W/V) ratio of the ingredient from nonvolatile memory and calculates the weight of the ingredient and stores it temporarily. The ingredient is added gradually to a mixing bowl on the scale after the tare weight of the bowl is cancelled. The processor continuously compares the stored weight with the increasing weight of the ingredient and notifies the user by means of the display when a comparison is read and, hence, when the desired volumetric amount of the ingredient has been entered. Other operating modes can also be selected.
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Citations
25 Claims
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1. A converter scale comprising:
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transducer means for producing an electric signal (W) corresponding to the weight of a material placed on the scale, means for converting said signal (W) corresponding to weight to a signal (V) corresponding to the volume of said material, and display means responding to said signal (V) corresponding to volume by displaying information indicative of said volume. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A converter scale comprising:
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transducer means for generating a signal (W) corresponding to the weight of a material that has been placed on the scale, storage means for storing signals corresponding to the weight and volume proportionality factors of a plurality of different materials, processor means operative to combine, respectively, said signals (W) and said signals corresponding to said proportionality factors pertaining to materials placed on the scale to yield a signal (V) corresponding to the volume of the materials on the scale, keyboard means and means for coupling said keyboard means to said processor means to provide informational signals to said processor means in response to manual operation of keys on said keyboard means, said keyboard means including keys operable selectively to supply signals to said processor means to identify a material to be placed on the scale and operable to supply signals indicative of requesting that it is desired to display information indicative of the weight or, alternatively, the volume of the material that is to be placed on the scale, and display means, said processor means utilizing said signals (W) or (V) to control said display means to display information indicative of the weight of said material when a key has been operated requesting that the weight of the material be displayed and to display information indicative of the volume of the material when a key has been operated requesting that information indicative of volume be displayed. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A converter scale comprising:
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transducer means for generating a signal (W) corresponding to the weight of material placed on the scale, storage means for storing signals corresponding to the weight and volume proportionality factors of a plurality of different materials, keyboard means and processor means and means for coupling signals to said processor means produced by manually operating keys on said keyboard means, operating predetermined keys on said keyboard means generating digital signals corresponding to the identity of materials, respectively, which may be placed on said scale and digital signals indicative of the specified volume of the material to be placed on said scale, said processor means operating to combine proportionality factor signals pertaining to a material to be placed on said scale and said signals from said keyboard corresponding to the specified volume of said material to yield a signal (X) corresponding to the weight of the specified volume of said material, display means and means coupling said processor means to the display means, said display means responding to input of said signal (X) by displaying information indicative of the specified weight to be placed on the scale and said display means responding to input of said signal (W) by displaying information indicative of the weight of the material placed on said scale. - View Dependent Claims (21, 22)
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23. A method of producing recipes in which the ingredients composing the recipe are expressed in volumetric units, comprising the steps of:
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storing in a storage device signals corresponding to volume and weight proportionality factors of ingredients specified in recipes, having a scale on which a specified ingredient is placed producing a signal (W) corresponding to the weight of the selected ingredient, having a processor combine the signal (W) and the proportionality factor signal for the selected ingredient to produce a signal (V) corresponding to the volume of the ingredient, and using the signal (V) to actuate a display device to display an indication of the volume of said ingredient on the scale. - View Dependent Claims (24, 25)
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Specification