Strain gage sensor having an unstrained area
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1. A strain gage for measuring a force applied to the strain gage, comprising:
- a) a substrate including;
1) a center section that is adapted to flex in response to the applied weight;
2) at least one step section attached to the center section, the center section located adjacent the step section, the step section adapted to concentrate the weight applied thereon onto to the center section; and
3) at least one outer section attached to the step section;
b) at least one strained resistor, mounted on the center section of the substrate, for generating an electrical signal in response to the substrate being stressed;
c) at least one wing section attached to the center section, the wing section adapted to be out of a strain path; and
d) at least one unstrained resistor mounted on the wing section.
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Abstract
A strain gage for measuring an applied force or weight. The strain gage includes a substrate having a tapered center section that is adapted to be stressed in response to the applied force. A strained resistor is mounted on the center section of the substrate. A wing section is attached to the center section. The wing section is adapted to be not stressed by the applied force. An unstrained resistor is mounted on the wing section. A terminal section is mounted to the center section and the wing section.
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Citations
23 Claims
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1. A strain gage for measuring a force applied to the strain gage, comprising:
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a) a substrate including;
1) a center section that is adapted to flex in response to the applied weight;
2) at least one step section attached to the center section, the center section located adjacent the step section, the step section adapted to concentrate the weight applied thereon onto to the center section; and
3) at least one outer section attached to the step section;
b) at least one strained resistor, mounted on the center section of the substrate, for generating an electrical signal in response to the substrate being stressed;
c) at least one wing section attached to the center section, the wing section adapted to be out of a strain path; and
d) at least one unstrained resistor mounted on the wing section. - View Dependent Claims (2, 3, 4, 5)
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6. A strain gage for measuring a force applied to the strain gage, comprising:
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a) a substrate including;
1) a center section that is adapted to flex in response to the applied weight;
2) at least one wing section attached to the center section, the wing section located adjacent the center section; and
3) a terminal section attached to the wing section and the center section;
b) at least one strained resistor, mounted on the center section of the substrate, for generating an electrical signal in response to the substrate being stressed; and
c) at least one unstrained resistor mounted on the wing section. - View Dependent Claims (7, 8, 9, 10)
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11. A strain gage for measuring an applied force, comprising:
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a) a gull wing shaped substrate having a center section that is adapted to be stressed in response to the applied force and a pair of outer sections attached to the center section;
b) at least one strained resistor, mounted on the center section of the substrate;
c) at least one wing section attached to the center section, the wing section adapted to be not stressed by the applied force; and
d) at least one unstrained resistor, mounted on the wing section. - View Dependent Claims (12, 13, 14)
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15. A strain gage for measuring an applied weight, comprising:
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a) a substrate having a tapered center section that is adapted to be stressed in response to the applied weight;
b) at least one strained resistor, mounted on the center section of the substrate;
c) at least one wing section attached to the center section, the wing section adapted to be not stressed by the applied weight;
d) at least one unstrained resistor, mounted on the wing section;
e) a terminal section mounted to the center section and the wing section. - View Dependent Claims (16, 17, 18)
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19. A strain gage for measuring an applied force, comprising:
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a) a substrate having a strain bearing section and a non-strain bearing section;
b) at least one strained resistor, mounted on the strain bearing section, the strained resistor changing resistance in response to the magnitude of the applied force; and
c) at least one unstrained resistor, mounted on the non-strain bearing section, the unstrained resistor having a substantially constant resistance. - View Dependent Claims (20, 21, 22, 23)
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Specification