Vertical filter filling machine and process
US7479099B2 · kind B2 · utility
7Cited by
7References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 4, 2005 |
| Grant date | Jan 20, 2009 |
| Priority date | — |
| Expiry date | Jan 5, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24D3/0287
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Process and apparatus for the mass production of compound cigarette filters function to deposit granular filter material into the open ends of vertically oriented filter tubes. Predetermined amounts of diverse granular material are withdrawn by suction from sources of such material, and these amounts are deposited into the tubes. Solid filter segments seal the granular material within the tube. After one half of each filter tube is filled with granular material and sealed, the tube is inverted and the opposite end is filled in substantially the same manner. When cut in half each filter tube produces two cigarette filters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.