Magnet Strength Measurement
AssigneeKLA-Tencor Corporation
InventorChristopher M.S. Sears
Life of this patent
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Abstract
An apparatus for determining an integral strength of a magnet, including a magnetically attractive specimen, a force-sensing device for receiving the specimen and determining a magnitude of a first force applied by the specimen against the force-sensing device in the presence of the magnet and a magnitude of a second force applied by the specimen against the force-sensing device in the absence of the magnet, and a platform for receiving the magnet and for positioning the magnet at a desired distance above the specimen.
Claims20
An apparatus for determining an integral strength of a magnet, the apparatus comprising:
- a magnetically attractive specimen,
- a force-sensing device for receiving the specimen and determining,
- a magnitude of a first force applied by the specimen against the force-sensing device in the presence of the magnet, and
- a magnitude of a second force applied by the specimen against the force-sensing device in the absence of the magnet, and
- a platform for receiving the magnet and for positioning the magnet at a desired distance above the specimen.
A method of determining the integral strength of a magnet, the method comprising the steps of:
- placing a magnetically attractive specimen onto a force-sensing device,
- measuring an initial force applied by the specimen against the force-sensing device, using the force-sensing device,
- positioning a magnet at a desired distance above the specimen and opposite the force-sensing device,
- measuring a second force applied by the specimen against the force-sensing device, using the force-sensing device, and
- comparing the initial force to the second force, thereby determining the integral strength of the magnet.
A method of determining the integral strength of a magnet, the method comprising the steps of:
- placing a magnetically attractive specimen onto a scale,
- measuring an initial weight of the specimen, using the scale,
- positioning a magnet at a desired distance above the specimen and opposite the scale,
- measuring a second weight of the specimen, using the scale, and
- subtracting the second weight from the initial weight, thereby producing the integral strength of the magnet.
Dependencies are inferred from the claim text.