Field marker and method
US4635847A · kind A · utility
Inventor
Key dates
| Filing date | Oct 29, 1984 |
| Grant date | Jan 13, 1987 |
| Priority date | — |
| Expiry date | Oct 29, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B12/16
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A field marker is disclosed for selectively dropping sections of rolled paper tissue to the ground surface to indicate the boundary of an area being treated with a liquid. The marker includes a device for mounting a tissue roll for rotation to facilitate unraveling the free end of the paper tissue. A gripping mechanism is provided to take hold of the free tissue end and pull it from the roll. The action is such that individual tissue sections are selectively removed from the tissue roll and dropped to the ground surface. Preferably, the area marked is slightly inward of the treatment pattern such that the dropped tissue sections are saturated by the liquid being applied and thereby secured to the ground surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.