Lawn mower
US11503761B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 2019 |
| Grant date | Nov 22, 2022 |
| Priority date | — |
| Expiry date | Jul 3, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/72
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A lawn mower including a housing; a walking mechanism, supporting the housing and driving the housing to move, and including at least one drive wheel; at least one motor to drive the at least one drive wheel to rotate; and a control apparatus, preset with a first and a second torque threshold. And when the motor is switched from a stopped state to a running state, the control apparatus controls a difference between a maximum operating output torque of the motor and the first threshold to be within a predetermined range, when the motor is in the running state, the control apparatus controls an operating output torque of the at least one motor to at most increase to the second threshold, the first threshold is less than or equal to a maximum output torque of the motor, and the second threshold is less than the first threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.