Lawnmower
US11812691B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2020 |
| Grant date | Nov 14, 2023 |
| Priority date | — |
| Expiry date | Apr 27, 2042 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01D2101/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The disclosure proceeds from an autonomous lawnmower having a chassis, a motor for driving a cutting device, and a height adjustment device for a displacement of the cutting device and of the motor relative to the chassis, at least for setting a working height of the cutting device relative to the chassis, in particular for setting a cutting height of a cutting tool of the cutting device, wherein the height adjustment device has a hollow cylindrical rotary body and a sliding seat surrounding the rotary body, which rotary body and sliding seat have corresponding threads such that a rotation of the rotary body results in a linear displacement of the sliding seat.One of the threads has at least two thread sections, wherein the one thread section is elastically displaceable radially in relation to the thread axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.