Sandmill
US3960331A · kind A · utility
6Cited by
6References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 4, 1974 |
| Grant date | Jun 1, 1976 |
| Priority date | — |
| Expiry date | Dec 4, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB02C17/16
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Three sandmill processing vessels are mounted on a central supporting column. The rotors in the sandmill vessels are separately driven by hydraulic motors mounted on the upper portion of the central column. Separate pumps driven by hydraulic motors are mounted below the vessels for pumping the material to be processed through the vessels. An electric motor for driving the hydraulic motors may be remotely positioned to eliminate explosion hazards from electrical sparks. Indicator lights included in safety control circuitry for the electric motor are energized to indicate the malfunction if the motor is automatically deenergized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.