Geometrical instruments – Gauge – Internal
Reexamination Certificate
2007-02-02
2008-12-02
Smith, R. A. (Department: 2841)
Geometrical instruments
Gauge
Internal
C033S535000, C033S550000, C033S555200
Reexamination Certificate
active
07458168
ABSTRACT:
An apparatus for measuring concentricity of two holes at both ends of a cylindrical member includes a rotation unit supporting and rotating the cylindrical member about one of the holes, and an unit measuring the concentricity by measuring a relative position of an inner circumferential surface of the other hole to the center line of the one hole over the whole inner circumferential surface, while the member is rotated. An apparatus for measuring squareness of one end surface of a partition wall between the two holes in the cylindrical member to a longitudinal center line of the one hole includes, in addition to the rotation unit, an unit measuring the squareness by measuring a relative position of the one end surface of the partition wall along the longitudinal center line of the other hole over the whole circumference of the one end surface, while the member is rotated.
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Olympus Medical Systems Corp.
Ostrolenk Faber Gerb & Soffen, LLP
Smith R. A.
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