Flexible frame for a multi-section implement
US6068062A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 7, 1998 |
| Grant date | May 30, 2000 |
| Priority date | — |
| Expiry date | May 7, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01B49/027
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A flexible frame structure for an implement includes a wing frame section with several fore-and-aft spaced, transversely extending rank tubes that are connected to surrounding support structure with conventional, non-resilient pin joints for rotation about a fore-and-aft extending horizontal rank axis. A transversely extending rear rank tube is rigidly connected to a fore-and-aft extending caster wheel support frame which extends forwardly above the ends of the rank tubes. A caster wheel projects forwardly from the end of the support frame out of interfering relationship with the forward tool-carrying rank. The rear rank tube and caster wheel support frame define a rigid L-shaped member which is connected to the adjacent frame section by a conventional pin and pivot structure for rotation about a first axis corresponding to the rank axis, and a second axis perpendicular to the forward direction. A diagonal brace has a leading end pivotally connected to the surrounding support structure and a trailing outer end connected near the vertex area of the L-shaped member for pivoting about a transverse axis. The non-resilient pin joints connect the outer ends of the rank tubes to the under…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.