Apparatus and a method for measuring the curvature radii of sphe

Details Apparatus and a method for measuring the curvature radii of sphe Apparatus and a method for measuring the curvature radii of sphe

1995-11-15

1997-06-24

Fulton, Christopher W.

Geometrical instruments

Gauge

Lens

33550, 335551, 33832, G01B 5213, G01B 522

Patent

active

056407785

ABSTRACT:
An apparatus for measuring the curvature radii of spherical and cylindrical surfaces is provided. The apparatus comprises a base, a probe and four ball rings of the same size, wherein the four ball rings are provided on the base and arranged into a square having a side length C. The probe is upward and downward movably mounted on the top surface of the base at the center of the square. There is also provided a method for measuring the curvature radii of spherical and cylindrical surfaces, wherein a ball-ring-distance is equal to C for the cylindrical surface or is equal to .sqroot.2C for the spherical surface.

REFERENCES:
patent: 2785474 (1957-03-01), Mages et al.
patent: 2855687 (1958-10-01), Price
patent: 3439430 (1969-04-01), Harris
patent: 3848339 (1974-11-01), Strasbaugh
patent: 5317811 (1994-06-01), Berwick

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