Air system monitor for a cotton harvester
US4635047A · kind A · utility
20Cited by
1References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 5, 1986 |
| Grant date | Jan 6, 1987 |
| Priority date | — |
| Expiry date | May 5, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01D46/085
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An element placed within a cotton conveying duct of a cotton harvester above the air discharge jet is shaped to shed cotton and supports a vacuum opening which communicates with a simple differential pressure switch through a vacuum conduit. The aspiration effect of normal air flow over the opening provides a vacuum in the conduit which maintains the switch open, but if air velocity in the duct drops below a preselected value due to a plug, low fan speed or faulty hose, the vacuum decreases and the switch closes to energize a warning device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.