Tablet coating apparatus and method
US4725446A · kind A · utility
26Cited by
10References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 28, 1986 |
| Grant date | Feb 16, 1988 |
| Priority date | — |
| Expiry date | Oct 28, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2/006
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A rotatable drum has means for spraying a coating material onto a localized area of the cascading tablet surface of a tumbling bed of tablets being rotated in the drum. Means (not shown) is also provided for supplying drying air into the drum to dry the coated tablets. Open-ended tubular members mounted inside the drum, pass through the tumbling bed of tablets and completely beneath the localized area as the drum is rotated. The members thus extract tablets from the stagnant core of the tablet bed and distribute the extracted tablets onto the cascading tablet surface so as to hasten the coating process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.