Fine mesh screening
US5398816A · kind A · utility
13Cited by
5References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 20, 1993 |
| Grant date | Mar 21, 1995 |
| Priority date | — |
| Expiry date | Jul 20, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB07B2230/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A screening system having a resiliently mounted frame with a screen extending thereacross. The frame is vibrated by a low frequency vibratory drive using eccentric weights. About the peripheral frame of the screen, a high frequency drive or drives is employed to vibrate the screen in the range of 20,000 Hz. The high frequency vibration is generated at the peripheral frame about the screen. The screen is responsive to the high frequency vibrations in a plate-like manner rather than as a membrane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.