Electronic scale with two different types of power on switches
First Claim
1. A weight scale, comprising:
- a case having a weight supporting surface that supports an object being weighed;
an array of load cells upon which the weight supporting surface rests;
a weight measuring circuit that receives output signals from the array of load cells and calculates a weight responsive thereto;
a first switch that trips when a weight is applied to the weight supporting surface while the weight scale is situated on a soft surface;
a second switch that trips when a weight is applied to the weight supporting surface while the weight scale is situated on a hard surface;
a power source; and
a turn-on circuit responsive to the first and second switch to apply power from the power source to the weight measuring circuit upon detection that either the first or second switch has tripped as a result of a weight being applied to the weight supporting surface.
0 Assignments
0 Petitions
Accused Products
Abstract
A weight scale consistent with certain implementations has a case having a weight supporting surface that supports an object being weighed. An array of load cells is provided upon which the weight supporting surface rests. A weight measuring circuit receives output signals from the array of load cells and calculates a weight responsive thereto. A first switch trips when a weight is applied to the weight supporting surface while the weight scale is situated on a soft surface. A second switch trips when a weight is applied to the weight supporting surface while the weight scale is situated on a hard surface. A power source is provided and a turn-on circuit responsive to the first and second switch applies power from the power source to the weight measuring circuit upon detection that either the first or second switch has tripped as a result of a weight being applied to the weight supporting surface. This abstract is not to be considered limiting, since certain embodiments may deviate from the features described in this abstract.
33 Citations
26 Claims
-
1. A weight scale, comprising:
-
a case having a weight supporting surface that supports an object being weighed; an array of load cells upon which the weight supporting surface rests; a weight measuring circuit that receives output signals from the array of load cells and calculates a weight responsive thereto; a first switch that trips when a weight is applied to the weight supporting surface while the weight scale is situated on a soft surface; a second switch that trips when a weight is applied to the weight supporting surface while the weight scale is situated on a hard surface; a power source; and a turn-on circuit responsive to the first and second switch to apply power from the power source to the weight measuring circuit upon detection that either the first or second switch has tripped as a result of a weight being applied to the weight supporting surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A weight scale, comprising:
-
a case having a weight supporting surface that supports an object being weighed; an array of load cells upon which the weight supporting surface rests; a weight measuring circuit that receives output signals from the array of load cells and calculates a weight responsive thereto during a weight measurement cycle; a first switch that trips when a weight is applied to the weight supporting surface while the weight scale is situated on a soft surface; a second switch comprised of an array of switches that trip when a weight is applied to the weight supporting surface while the weight scale is situated on a hard surface, and wherein the array of switches support at least a portion of the weight scale case until a weight is placed upon the weight supporting surface when the weight scale is situated on a hard surface; wherein the soft surface comprises a carpeted floor with padding and the hard surface comprises a solid surface floor, and wherein the second switch trips at a weight that is greater than a weight that trips the first switch; a power source; a turn-on circuit responsive to the first and second switch to apply power from the power source to the weight measuring circuit upon detection that any of the first switch or the switches in the array comprising the second switch has tripped as a result of a weight being applied to the weight supporting surface; a display that displays a measured weight; and wherein, if the at least one of the first and second switches remains tripped at the end of the weight measurement cycle, an alert message is displayed on the display. - View Dependent Claims (13, 14, 15)
-
-
16. A method of turning on a weight scale having electronic weight measurement circuitry, comprising:
-
receiving a signal from either one of a first switch that trips when a weight is applied to a weight supporting surface while the weight scale is situated on a soft surface, or from a second switch that trips when a weight is applied to the weight supporting surface while the weight scale is situated on a hard surface; determining that either one of the first or second switch has been tripped by application of a weight to the weight supporting surface; and upon determining that one or of the first or second switch has been tripped by application of a weight to the weight supporting surface, applying power to the weight scale'"'"'s weight measurement circuitry. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
-
Specification