Folding mechanism for hinged implement frame extensions
US4034623A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1974 |
| Grant date | Jul 12, 1977 |
| Priority date | — |
| Expiry date | Feb 13, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/206
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
This invention relates to a hydraulic servomotor-actuated folding mechanism for swinging the hinged extension of an implement frame horizontally between an extended and a retracted position characterized by a two-part foldable strut, the adjacent ends of its sections being hingedly interconnected for pivotal movement, a first link connected between the piston rod of the servomotor and the foldable strut section, and a second link pivotally connected to the main strut section at a point displaced from the pivotal connection between its sections, said second link having its other end connected to the first link at a point intermediate its ends so as to cooperate therewith and with the strut sections to define a pair of fixed length lever arms movable upon actuation between a crossed relation and a side-by-side relation to effect folding and unfolding of the strut.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.