Structure for attaching tines for cultivation by reversible rotation in rotary cultivating apparatus
US4556113A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 2, 1983 |
| Grant date | Dec 3, 1985 |
| Priority date | — |
| Expiry date | Nov 2, 2003 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01B33/144
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Cultivating tines, each having opposite cutting edges, are pivotably supported by tine mount members on a tine shaft reversibly rotatable about a horizontal lateral axis. One of the cutting edges of the tine is retainable in a position rearward with respect to the direction of forward rotation, while the other cutting edge is retainable in a position rearward with respect to the direction of reverse rotation. When held in each of these positions, the tine is restrained by resistant force imparting means from being pivotally moved by a centrifugal force. The resistant force to be imparted by this means is smaller than the reaction to be produced when the tine is driven into the soil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.