Self-aligning tachometer and method of manufacturing same

Details Self-aligning tachometer and method of manufacturing same Self-aligning tachometer and method of manufacturing same

1989-02-24

1990-06-12

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Electrical speed measuring

Including speed-related frequency generator

25023113, 295921, G01D 534, H01S 400, G01P 336

Patent

active

049336363

ABSTRACT:
A tachometer assembly includes a precision manufactured hub assembly or member having a cylindrical hub and a backing plate for mounting on a shaft of a drive motor, a fine line disc having a plurality of radial reference lines circumferentially disposed about an outer periphery thereof, a hub bore formed in the disc concentric with the reference lines and sized to fit the cylindrical hub within two thousandths of an inch, and a circular spring retainer having a central bore with internal teeth for press fitting on the cylindrical hub and an annular rim for biasing the disc into support engagement with the backing plate.

REFERENCES:
patent: 4184071 (1980-01-01), Fryer et al.
patent: 4593269 (1986-06-01), Nakamura et al.
patent: 4727356 (1988-02-01), Abe et al.

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