Apparatus for the measurement of the wall thickness of coated rod with consideration of eccentricity
OwnerHarald Sikorainventor
Life of this patent
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Abstract
Apparatus for ascertaining the concentricity of the core of an elongated cable with its coating includes a means for establishing a predetermined axial position of the core with respect to the apparatus, as by sensing the intensity of a magnetic field produced by a current induced in the core. With the core in the established position, a second means ascertains the position of the lateral or transverse cross sectional dimension of the cable. Such means may comprise a photoelectric device responsive to the shadow of the cable. Any deviation in the position of the cross sectional dimension results from eccentricity and may be used as an indication of such.
Claims9
Apparatus for ascertaining the concentricity of the core of an elongated cable with respect to its coating comprising:
- a measuring head through which such a cable may extend;
- a position measuring device mounted on said head for ascertaining a predetermined axial position of the core of the coated cable with respect to said head;
- and
- means mounted on said head for establishing a predetermined condition of the lateral dimension of the coated cable with respect to the head indicative of concentricity when the core is in said predetermined position and for sensing deviations in said lateral dimensional condition as an indication of core-coating eccentricity.
Dependencies are inferred from the claim text.