Riding mower carrying a plurality of cutting units with tuned mass dampers for decreasing cutting unit bobbing
US7934364B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2010 |
| Grant date | May 3, 2011 |
| Priority date | — |
| Expiry date | Mar 2, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01D75/306
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An autonomous mass damper is positioned proximate to each reel cutting unit in a ganged configuration of such cutting units. One mass damper is preferably mounted or directly carried on each such reel cutting unit. The mass damper is free to move independently of vertical up and down movement of the reel cutting unit as the reel cutting unit travels over the ground. The mass damper is connected to the reel cutting unit by a coupler or by coupling components that allow the mass damper to move in a counter motion to vertical up and down bouncing or bobbing of the reel cutting unit. The counter motion of the mass damper lessens or damps the bouncing or bobbing of the reel cutting unit to provide a more consistent height of cut.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.