Spinner
US4393807A · kind A · utility
36Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1980 |
| Grant date | Jul 19, 1983 |
| Priority date | — |
| Expiry date | Sep 15, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/162
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A spinner comprises a rotating spindle for causing a workpiece to spin at a high speed, and a cup disposed around the spindle and provided at a bottom wall thereof with a port for air evacuation. The cup comprises a deflector ring disposed in the interior of the cup and extending inwardly, the deflector ring having an annular barrier at the inner peripheral edge for defining steps projecting from the upper and lower surfaces of the ring, respectively, and the barrier having an inner peripheral surface formed to diverge at least upwardly with respect to the axis of the spindle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.