Comminuting unit
US5639032A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 18, 1996 |
| Grant date | Jun 17, 1997 |
| Priority date | — |
| Expiry date | Jul 18, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB02C25/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A pulverizing mill designed especially for waste products made of plastic is equipped with a pulverizing cylinder (14) situated under a downward slanted cover plate (22) by means of which the connection between the pulverizing cylinder (14) and a hopper (52) containing the material to be pulverized can be alteratively opened and closed. When the pulverizing mill is switched off, a control unit (70) continues to energize a cylinder drive (68) until the cover plate has been moved into its closed position. This ensures that the pulverizing cylinder (14) can be restarted, even though the cylinder drive (68) is set to run the pulverizing cylinder at high speeds of preferably 200 to 1000 rpm, as is advantageous for plastic waste products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.