Back to results
US 12,733,577 B2Granted
Garden tool with toollessly interchangeable wheel
AssigneeTechtronic Cordless GP
InventorsKoon For Chung, Yan Jia Wang
Life of this patent
Estimating the term…
Abstract
A garden tool includes a deck, a motor, an implement configured to be driven by the motor, a wheel shaft, and a wheel removably coupled to the wheel shaft by way of a toolless shaft nut assembly. The toolless shaft nut assembly configured to self-lock.
Claims20
A garden tool, comprising:
- a deck;
- a motor;
- an implement configured to be driven by the motor;
- a wheel shaft;
- and
- a wheel removably coupled to the wheel shaft by way of a toolless shaft nut assembly, the toolless shaft nut assembly configured to self-lock, the toolless shaft nut assembly including a manually actuatable actuator and a biasing member that biases the actuator to an engaged position whereby the wheel is engaged with the wheel shaft, the actuator being movable to a disengaged position to disengage the wheel from the wheel shaft.
3 more elements
A robotic lawn mower movable along a support surface, the robotic lawn mower comprising:
- a deck;
- a motor;
- a blade configured to be driven by the motor;
- a wheel shaft;
- and
- a wheel removably coupled to the wheel shaft by way of a toolless shaft nut assembly, the toolless shaft nut assembly configured to self-lock, the toolless shaft nut assembly including a manually actuatable actuator and a biasing member that biases the actuator to an engaged position whereby the wheel is engaged with the wheel shaft, the actuator being movable to a disengaged position to disengage the wheel from the wheel shaft.
3 more elements
A method of selecting a deck height of a garden tool with respect to a support surface on which the garden tool moves, the method comprising:
- selecting a wheel from a plurality of wheels including a first wheel having a first diameter and a second wheel having a second diameter different from the first diameter, wherein the first diameter corresponds to a first deck height and the second diameter corresponds to a second deck height different from the first deck height;
- installing the selected wheel on the garden tool by manually attaching a self-locking nut such that the selected wheel is secured to a wheel shaft without the use of a tool, attaching the self-locking nut including manually actuating an actuator to a disengaged position against the bias of a biasing member and releasing the actuator whereby the biasing member relaxes and facilitates engagement between the selected wheel with the wheel shaft.
Dependencies are inferred from the claim text.