Magnetic thickness gauge with third support
AssigneeLinda Koch
InventorFrank Koch
Life of this patent
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Abstract
A magnetic thickness gauge is disclosed wherein a balance arm is pivotally mounted in a housing with a spring providing a bias force to counteract a magnetic attraction of the balance arm toward a base of a coating to be measured. The balance arm is provided with a probe assembly including a magnet selectively positionable with respect to a spherical contact member of either a particular alloy of aluminum, iron and silicon or of tungsten carbide. The housing is preferably provided with supports at either end of the gauge. A balance arm is moved by way of a protrusion provided between the probe assembly and an adjustment knob for the spring with a scale and pointer indicating the thickness of the coating to be measured.
Claims9
In a gauge for magnetically measuring the thickness of a coating including a housing, a balance arm rotatably mounted to the housing, a probe assembly at a location along said balance arm for providing a magnetically attracting force to urge said balance arm toward said coating to be measured, and a spring for biasing the probe assembly away from the coating to be measured, said probe assembly being adjacent a first end of said housing and including a magnet, the improvement comprising first, second and third supports provided on said housing, said supports mutually arranged to support said housing simultaneously, said first support being provided at said first end, the second support being provided at a second end of the housing opposite of said first end and said third support being provided at a midsection of the housing intermediate of said first and second ends, whereby stability of said gauge during use may be enhanced.
A gauge for magnetically measuring the thickness of a coating, comprising:
- a housing;
- a balance arm mounted to said housing about a pivot;
- means for selectively moving one end of said balance arm toward said coating to be measured;
- resilient means for providing a biasing force to urge said balance arm away from said coating to be measured;
- probe means for providing a magnetically attracting force urging said one end of said balance arm toward said coating to be measured, said probe means being provided on said balance arm;
- means for selectively varying the force provided by said resilient means;
- and
- means for indicating the thickness of said coating to be measured;
- said housing including a first support provided at a first end of said housing adjacent said probe means, a second support provided at a second end of said housing opposite of said first end and a third support provided at a mid-section of said housing intermediate of said first and second ends, said first, second and third supports mutually arranged for supporting said housing simultaneously, whereby stability of said gauge during use may be enhanced.
Dependencies are inferred from the claim text.