Geometrical instruments – Area integrators – Electrical
Patent
1987-09-29
1988-07-05
Cuchlinski, Jr., William A.
Geometrical instruments
Area integrators
Electrical
33178E, 33178F, 33543, 33520, 33550, G01B 326, G01B 512
Patent
active
047545518
ABSTRACT:
A centering gauge tool for determining if an axial bore is disposed concentrically relative to a desired center. The tool preferably has four sensing fingers equally spaced about a conical core, the finger being resiliently biased away from the surface of the core and depressible against the resilient urging into engagement with an electrical contact member connected in a circuit with lights and a source of electrical energy. When the tool is inserted within the bore of a workpiece and the bore is concentric about the axis of the workpiece relative to axes the tool, all of the indicator fingers will be depressed substantially simultaneously to light all the indicators. If the bore is eccentric, when the tool is inserted within the bore less than all the fingers will engage the wall of the bore and effect a lighting of less than all the indicators. An operator may thereafter provide correction of either the workpiece or a machine tool in which the centering gauge tool may be mounted to correct for the eccentricity. Preferably the indicator lights are of different colors thereby to indicate which finger or fingers have been depressed by contact with the wall of a bore.
REFERENCES:
patent: 2340987 (1944-02-01), Robidoux
patent: 2497990 (1950-02-01), Huber et al.
patent: 2630632 (1953-03-01), Brandon
patent: 3772794 (1973-11-01), Hopler, Jr.
patent: 4112355 (1978-09-01), Gibson, Jr. et al.
patent: 4186494 (1980-02-01), Edouard et al.
patent: 4306455 (1981-12-01), Selleri
patent: 4443948 (1984-04-01), Reeves
Cuchlinski Jr. William A.
Ruderman Alan
Scanlon Patrick R.
Spencer Wright Industries, Inc.
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