Shear sensor apparatus
First Claim
1. An apparatus for sensing shear, the apparatus comprising a first piece, a second piece movable relative to-the first piece along a shear plane, and a sensor interposed between the first piece and the second piece, a first portion of the sensor being stationary relative to the first piece, a second portion of the sensor being stationary relative to the second piece, and a third portion of the sensor being deformed as the second piece moves relative to the first piece along the shear plane, the sensor having an output signal indicative of the amount of deformation of the third portion.
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Accused Products
Abstract
A shear sensor apparatus may be used to sense shear forces between a first body and a second body. Illustratively, the first body may be a patient and the second body may be a hospital bed. The shear sensor apparatus may comprise a first piece and a second piece that moves along a shear plane. A sensor may be interposed between the first and second pieces. The sensor may comprise a strain gage. The sensor may comprise a flexible material to which the strain gage is mounted.
48 Citations
26 Claims
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1. An apparatus for sensing shear, the apparatus comprising
a first piece, a second piece movable relative to-the first piece along a shear plane, and a sensor interposed between the first piece and the second piece, a first portion of the sensor being stationary relative to the first piece, a second portion of the sensor being stationary relative to the second piece, and a third portion of the sensor being deformed as the second piece moves relative to the first piece along the shear plane, the sensor having an output signal indicative of the amount of deformation of the third portion.
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13. An apparatus for sensing shear, the apparatus comprising
a first piece comprising a first plate and a first stop coupled to the first plate, a second piece comprising a second plate and a second stop coupled to the second plate, the second plate being arranged in parallel relation with the first plate, the second piece being movable relative to the first piece along a shear plane that is parallel with the first and second plates, and a sensor comprising a body and a strain gage coupled to the body, a portion of the body being situated between the first and second stops, the portion of the body being deformable as a result of the second piece moving relative to the first piece along the shear plane, a resistance of the strain gage changing as a result of the portion of the body being deformed.
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24. An apparatus for sensing shear, the apparatus comprising
a first plate, a second plate, a middle plate sandwiched between the first and second plates, the middle plate being deformable, and a strain gage coupled to the middle plate.
Specification