Spray cylinder with retractable pins
US5022416A · kind A · utility
114Cited by
4References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 20, 1990 |
| Grant date | Jun 11, 1991 |
| Priority date | — |
| Expiry date | Feb 20, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF26B11/0463
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Retractable, self-cleaning pins are mounted on a rotating spray cylinder. Each pin is caused to extend into the cylinder during the upward motion of the pin in order to help convey material within the cylinder. Retraction of each pin occurs during its downward motion in order to remove material adhered to the pin. Extension and retraction of the pins may be controlled by such means as a cam. If desired, the interior surface of the cylinder may be scraped (e.g., by a stationary scraper) where the pins are retracted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.