Cutting down machine
US4349962A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 1980 |
| Grant date | Sep 21, 1982 |
| Priority date | — |
| Expiry date | Jul 24, 2000 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01D34/4163
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Line trimmer apparatus for cutting down weeds or the like, incorporating a device for selectably extending a predetermined length of cutting line or tape while the apparatus is operating. The tape is wound on a reel axially and rotatably fitted relative to a drive shaft. Protrusions on the reel mate with either of two sets of engaging portions on a cover portion driven by the drive shaft. The reel is axially urged to a first engaging position by a spring, and has a pressing member which can be placed against the ground to urge the reel axially to a second engaging position. The two sets of engaging portions are angularly offset relative to each other, allowing the protrusions on the reel to rotate relative to the cover portion when axially moved between the engaging positions and thereby unwinding a predetermined length of the cutting tape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.