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US 8,757,013 B1Granted
Force transducer with separately mounted calibration resistors
AssigneeBG Systems, Inc.
InventorOfer Bruhis
Life of this patent
Estimating the term…
Abstract
A force transducer with separately mounted calibration resistors is disclosed. In various embodiments, one or more strain gauges are bonded, via glass fusion, onto each of two or more surfaces of a bending beam. Measurements are performed, after bonding the strain gauges, to determine the respective resistances required to be added in series with the respective strain gauges to achieve a balanced bridge. The required calibration resistors are mounted on one or more surfaces of a support block disposed adjacent to the bending beam.
Claims18
A method of manufacturing a force transducer, comprising:
- bonding via glass fusion, on each of two or more surfaces of a bending beam, one or more strain gauges;
- performing one or more measurements, after bonding the strain gauges, to determine the respective resistances required to be added in series with the respective strain gauges to achieve a balanced bridge;
- and
- mounting the required calibration resistors on one or more surfaces of a support block disposed adjacent to the bending beam;
- wherein the strain gauges are glass fused to the bending beam at least in part by disposing a glass powder on the bending beam, heating the bending beam in an oven to melt the glass powder and form a glass bead, placing a strain gauge on the glass bead, and heating the beam a second time to cause the gauge to sink into the glass bead.
2 more elements
A force transducer device, comprising:
- a bending beam having glass fused, on each of two more mounting surfaces of the bending beam, one or more strain gauges;
- and
- a support block having mounted on one or more surfaces thereof one or more calibration resistors, each selected to achieve a balanced bridge when placed in series with one or more corresponding strain gauges;
- wherein the strain gauges are glass fused to the bending beam at least in part by disposing a glass powder on the bending beam, heating the bending beam in an oven to melt the glass powder and form a glass bead, placing a strain gauge on the glass bead, and heating the beam a second time to cause the gauge to sink into the glass bead.
1 more element
Dependencies are inferred from the claim text.