Self-aligning tachometer and method of manufacturing same
US4933636A · kind A · utility
5Cited by
3References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 24, 1989 |
| Grant date | Jun 12, 1990 |
| Priority date | — |
| Expiry date | Feb 24, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49002
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.