Aerator for turf
US5641025A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 19, 1995 |
| Grant date | Jun 24, 1997 |
| Priority date | — |
| Expiry date | Apr 19, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01M17/002
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The object of the present invention is to provide an aerator for turf which is capable of adjusting the level of the pressing rollers relative to not only the irregularity in its travelling direction but also that in the lateral direction, thus enabling a structure in which a pair of the pressing rollers are rocked, which structure causes an increase in the total weight of the aerator, to be removed. The aerator for turf according to the present invention for injecting high pressure liquid through a plurality of nozzles disposed in its lateral direction in the ground and smoothing ground by a pressing roller after injection, includes a supporting structure for spotting the pressing roller at a frame such that the pressing roller tilts freely relative to the horizontal line in a lateral direction and moves freely vertically relative to the frame, and a biasing structure for biasing the pressing roller downward.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.