String trimmer head and spool
US11122735B2 · kind B2 · utility
2Cited by
77References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2018 |
| Grant date | Sep 21, 2021 |
| Priority date | — |
| Expiry date | Sep 12, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01D34/4165
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A spool and a trimmer head. The trimmer head includes a housing defining a cavity and rotatable about an axis. A spool is supported in the cavity and operable to support line to be dispensed. The spool is movable along the axis relative to the housing, and the spool and the housing define cooperating conical surfaces to center the spool during movement of the spool toward and in a position relative to the housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.