Geometrical instruments – Gauge – Cam profile or keyway
Patent
1990-04-23
1990-11-20
Haroian, Harry N.
Geometrical instruments
Gauge
Cam profile or keyway
3350109, 33548, G01B 500
Patent
active
049707990
ABSTRACT:
A device for measuring the centering, parallelism, and perpendicularity of the side walls of a keyway to the centerline of the keyway in a shaft is described. The preferred embodiment of the device includes a micrometer slidingly attached to the device, a horizontal indicator dial slidingly attached to the device and connected to a horizontally extending probe which is positionable in a shaft keyway, a vertical indicator dial slidingly attached to the device and connected to a vertically extending probe positionable in a shaft keyway, and two stationary legs extending downward from the device for seating in a shaft keyway. In operation, the horizontal indicator dial and horizontal probe are utilized to check the centering and parallelism to the centerline of the keyway and the vertical indicator dial and vertical probe are utilized to check the perpendicularity of the keyway side walls to the centerline of the keyway. The indicator dials and the micrometer indicate the accuracy of the cut and any variations which may be present thereby indicating the corrections required.
REFERENCES:
patent: 2807091 (1957-09-01), Michelson
Fischer John
Proell Heinz
Wienss Dietrich
Breiner A. W.
Breiner Mary J.
Dreier Corporation
Haroian Harry N.
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