Work vehicle
US10939602B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2016 |
| Grant date | Mar 9, 2021 |
| Priority date | — |
| Expiry date | Dec 7, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01H5/08
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A work vehicle (1) comprises a coupling apparatus (18) for coupling an attachment to the forward end (8) of the work vehicle (1). The coupling apparatus (18) comprises a three point linkage mechanism having a pair of lower coupling elements (19) and an upper coupling element (25). A first carrier element (22) is pivotally coupled to a forward chassis part (14) of the work vehicle (1) by a pair of main transverse pivot shafts (35) which define a main transverse pivot axis (33). A second carrier element (23) carries the lower coupling elements (19) and is pivotally coupled to the forward chassis part (14) about the main transverse pivot axis (33) and about a main longitudinal pivot axis (45). A main longitudinal pivot shaft (46) extending rigidly from the second carrier element (23) pivotally engages the first carrier element (22) and terminates in a swivel bearing (50) which pivotally and swivelably couples the main longitudinal pivot shaft (46) to an intermediate transverse pivot shaft (54) which also defines the main transverse pivot axis (33), so that the second carrier element (23) and the first carrier element (22) are pivotal about the main transverse pivot axis (33), and the …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.