String trimmer head
US6347455B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2000 |
| Grant date | Feb 19, 2002 |
| Priority date | — |
| Expiry date | Dec 20, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01D34/416
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A string trimmer head is provided for receiving and retaining separate lengths of string supplied from outside the head. String lengths passing through openings in the periphery of the head are held by clamping members provided within the head. The clamping members are selectively opened by activation of respective slidable members provided on the upper surface of the head in order to release short lengths of previously supplied string and/or to permit the receipt of new string lengths. On release of the slidable members, the respective clamping members move towards one another for clamping purposes under the influence of springs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.