Vehicle mounted aerating machine
US4658909A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 1985 |
| Grant date | Apr 21, 1987 |
| Priority date | — |
| Expiry date | Mar 25, 2005 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01B45/023
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A turf aerating machine including a plurality of tyne arms, having tynes attached to their lower ends, and extending substantially vertically downwardly from the cranks of a crankshaft located transversely of the direction of travel of the aerator. A drive linkage connects the crankshaft to the power take-off of the tractor or other power source and is driven such that, as the aerator is moved forward, the crankshaft moves with the lower arc of its rotation in the rearward direction. The tyne arms are projected into the ground as the respective crank moves through its lower arc and they are lifted clear of the ground as the crank moves through the upper arc of its travel. While the tynes are engaged with the ground, the tyne arm is maintained in a substantially vertical orientation by the rearward motion of the respective crank through the lower arc of its rotation. The lower end of each tyne arm extends through a slot running longitudinally of the aerator such that lateral movement of the tyne arm is prevented. Each tyne arm is biased toward the forward end of its slot when the tyne is engaged in the ground due to the forward motion of the aerator over the ground. When the tyne is…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.