Sensitivity adjusting apparatus for tractor draft sensing and control system
US4411319A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 2, 1978 |
| Grant date | Oct 25, 1983 |
| Priority date | — |
| Expiry date | Aug 2, 1998 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01B63/112
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An apparatus for varying the sensitivity of a tractor draft sensing and control system of the type including a draft sensing mechanism having an output link shiftable along its length in response to changes in draft and a draft control linkage having an input arm mounted for swinging movement about a pivot. The input arm is provided with a generally radially extending slot, and the output link is provided with structure slideably received within the slot. A control member, which is adjusted by a screw rod, selectively positions the structure within the slot to vary the moment arm of the input arm which, in turn, varies the sensitivity of the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.