Shaker chain drive assembly for tomato harvester or the like
US4262750A · kind A · utility
12Cited by
5References
7Claims
0Family size
Inventors
Key dates
| Filing date | Aug 30, 1979 |
| Grant date | Apr 21, 1981 |
| Priority date | — |
| Expiry date | Aug 30, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S56/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The drive unit of a conventional mechanically actuated shaker for removing comestibles from their support vines is supplanted by a pair of hydraulic motors capable of effecting extremely rapid forward and reverse movement of the shaker. An adjustable multivibrator circuit produces electrical pulses of predetermined duration and frequency. The pulses activate a solenoid-operated hydraulic valve supplying first the forward motor and then the reverse motor with hydraulic fluid. The quick, snapping action of the shaker afforded by the electro-hydraulic drive apparatus effectively denudes the plants or vines of their fruit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.