Control device for selectively limiting stroke of swing actuator for implement mid-mounted pivot tongue
US5642607A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 1996 |
| Grant date | Jul 1, 1997 |
| Priority date | — |
| Expiry date | Feb 28, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01D34/661
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An implement includes a mid-mounted pivot tongue that is movable in a normal range of movement when the implement is working and to a transport position for towing the implement endwise when the implement is to be transported. Two embodiments of a stroke control device are provided and each acts to limit the stroke of a tongue-swing hydraulic actuator to operate for swinging the tongue through its operating range during normal operation of the implement, with each stroke control device being selectively operable to a stroke-freeing position permitting the actuator to operate through its entire stroke for moving the tongue beyond its operating range to a transport position. The stroke control devices and the tongue include cooperating structure for locking the tongue in its transport position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.