Articulating pitch-adjustable hitches for surface conditioning tools
US10765053B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 14, 2018 |
| Grant date | Sep 8, 2020 |
| Priority date | — |
| Expiry date | Dec 6, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01B59/004
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
One exemplary embodiment is a hitch assembly including forward and rearward lateral members, first and second longitudinal members and a lifting member which are coupled together to form a laterally-articulating pitch-adjustable quadrilateral. The forward lateral member is coupled with the first longitudinal member by a first joint and the second longitudinal member by a second joint. The rearward lateral member is coupled with the first longitudinal member by a third joint and the second longitudinal member by a fourth joint. The lifting member is coupled with the rearward lateral member by a first flexible rigging member and a second flexible rigging member. The quadrilateral can articulate between a left-leaning configuration, a rectangular configuration, and a right-leaning configuration. The lifting member can be adjusted to vary an amount of slack in one or both of the flexible rigging members and to raise and lower the rearward lateral member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.