Power equipment with throttle release actuator
AssigneeHusqvarna AB
InventorChad Jones
Life of this patent
Estimating the term…
Abstract
An outdoor power tool may include an engine, a carburetor configured to provide a fuel and air mixture to the engine based on operation of a throttle assembly, a selector and a throttle release actuator. The selector may be operably coupled to the throttle assembly to control a position of the throttle assembly in a selected one of a plurality of throttle positions. One of the throttle positions may be an idle position and each of the other throttle positions may be selectable by an operator via manual positioning of the selector. The throttle release actuator may be configured to return the selector from any one of the throttle positions to the idle position responsive to operator actuation of the throttle release actuator.
Claims20
An outdoor power tool comprising:
- an engine;
- a carburetor configured to provide a fuel and air mixture to the engine based on operation of a throttle assembly, wherein air is provided through the carburetor by only a throttle valve of the throttle assembly;
- a selector operably coupled to the throttle assembly to control a position of the throttle assembly in a selected one of a plurality of throttle positions, one of the throttle positions being an idle position and each of the other throttle positions being selectable by an operator via manual positioning of the selector, wherein the throttle assembly includes a rotatable shaft operably coupling the throttle valve to the selector, wherein based on the positioning of the selector, the throttle valve is positioned to provide a corresponding amount of air through the carburetor;
- and
- a throttle release actuator configured to enable the operator to return the engine to an idle state, wherein the throttle release actuator comprises a cap structure and a biasing assembly, the cap structure having a rest position and a depressed position, and wherein the biasing assembly works with the cap structure, the selector, or a support assembly to return the selector from any of the throttle positions to the idle position responsive to the cap structure being manually actuated by the operator into the depressed position.
A method of assembling a throttle release actuator for an engine with a carburetor, the carburetor configured to provide a fuel and air mixture to the engine based on operation of a throttle assembly, wherein air is provided through the carburetor by only a throttle valve of the throttle assembly, the method comprising:
- providing a support assembly proximate to a shaft of the throttle assembly, wherein the throttle assembly includes a rotatable shaft and a selector, the rotatable shaft operably coupling the selector to the throttle valve of the throttle assembly for selection of a position of the throttle valve based on manual positioning of the selector in a selected one of a plurality of throttle positions;
- providing a biasing assembly into a portion of the selector, the biasing assembly configured to return the selector to an idle position from any one of the throttle positions responsive to manual actuation of a cap structure of the throttle release actuator;
- inserting the selector into a window defined in the cap structure of the throttle release actuator while compressing the biasing assembly to enable the biasing assembly to fit within the window, the window enabling rotation of the selector about an axis defined by the shaft to the throttle positions;
- and
- attaching the cap structure to the support assembly, wherein the cap structure has a rest position and a depressed position, wherein responsive to the cap structure being manually actuated by an operator into the depressed position, the biasing assembly returns the selector to the idle position from any one of the throttle positions.
A throttle release actuator configured to provide a fuel and air mixture to an engine for an outdoor power tool, wherein the engine is controlled by operation of a throttle assembly, the throttle assembly including a throttle valve, a rotatable shaft, and a selector,
- wherein air is provided through a carburetor to the engine by only the throttle valve of the throttle assembly,
- wherein the selector is operably coupled to the throttle assembly to control a position of the throttle assembly in a selected one of a plurality of throttle positions, one of the throttle positions being an idle position and each of the other throttle positions being selectable by an operator via manual positioning of the selector,
- wherein the throttle release actuator comprises a cap structure and a biasing assembly, the cap structure having a rest position and a depressed position, wherein the biasing assembly works with the cap structure, the selector, or a support assembly to return the selector from any one of the throttle positions to the idle position responsive to the cap structure being manually actuated by the operator into the depressed position.
Dependencies are inferred from the claim text.