Pneumatic granule blender for asphalt shingles
US5746830A · kind A · utility
21Cited by
80References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 17, 1996 |
| Grant date | May 5, 1998 |
| Priority date | — |
| Expiry date | Jul 17, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05D2401/32
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The apparatus for applying granules to a coated asphalt sheet has a nozzle for holding an accumulation of granules, an opening at the bottom of the nozzle for discharging the granules onto the coated asphalt sheet, a buffer chamber positioned in communication with the accumulation of granules, and a vacuum source for reducing the pressure in the buffer chamber to stop the flow of granules through the opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.