Strand feed mechanism for a strand trimmer
US11272657B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2019 |
| Grant date | Mar 15, 2022 |
| Priority date | — |
| Expiry date | Mar 9, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01D2101/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A strand trimmer and method of use thereof. The strand trimmer includes a pair of pivotable arms each having a motor, a follower wheel, and a cutter-spindle assembly disposed thereon. The arms are biased toward one another and are guided by the follower wheels to pivot around obstacles passing between the arms. The motor rotates the cutter-spindle assembly to move cutting strands extending therefrom through a cutting path with sufficient rotational velocity to cut vegetation. The cutter-spindle assembly includes a reloadable spool and a strand-feed mechanism. The strand-feed mechanism includes a solenoid actuated plunger within a shaft of the cutter-spindle assembly which operates to non-contactingly actuate the plunger to feed out a length of strand. The solenoid is non-rotatably carried on the trimmer arm while the shaft of the cutter-spindle assembly is encircled by and rotated within the solenoid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.