Water spraying system
AssigneeBriggs & Stratton Corporation
InventorRichard J. Gilpatrick
Life of this patent
Estimating the term…
Abstract
A water spraying system includes an engine, a pump driven by the engine, the pump including a pump inlet configured to be fluidly coupled to a water source and a pump outlet providing water at an increased water pressure, a sprayer fluidly coupled to the pump outlet, the sprayer including a flow restriction valve and a trigger for manipulating the flow restriction valve so that movement of the trigger selectively opens and closes the flow restriction valve, a flow sensor configured to sense a flow of water into the pump, and a controller coupled to the flow sensor. The controller is configured to turn off the engine following a set time period of sensed flow below a threshold flow.
Claims17
A water spraying system comprising:
- an engine;
- a pump driven by the engine, the pump including a pump inlet configured to be fluidly coupled to a water source and a pump outlet providing water at an increased water pressure;
- a sprayer fluidly coupled to the pump outlet, the sprayer including a flow restriction valve and a trigger for manipulating the flow restriction valve so that movement of the trigger selectively opens and closes the flow restriction valve;
- a flow sensor configured to sense a flow of water into the pump;
- a controller coupled to the flow sensor, wherein the controller is configured to activate the pump by starting the engine when the sensed flow is above a threshold flow, and wherein the controller is configured to turn off the engine following a set time period of sensed flow below the threshold flow;
- and
- a user interface coupled to the controller, the user interface configured to receive input for adjustment of the threshold flow.
A water spraying system comprising:
- an engine;
- a pump driven by the engine, the pump including a pump inlet configured to be fluidly coupled to a water source and a pump outlet providing water at an increased water pressure;
- a sprayer including a flow restriction valve and a trigger for manipulating the flow restriction valve so that movement of the trigger selectively opens and closes the flow restriction valve;
- a hose fluidly coupling the pump outlet to the sprayer;
- a sensor configured to sense a water flow state, the sensor located proximate the pump inlet;
- and
- a controller coupled to the sensor, wherein the controller is configured to activate the pump by starting the engine when the sensed water flow state indicates a positive flow condition, and wherein the controller is configured to turn off the engine when the sensed water flow state indicates a no-flow condition for a set time period.
A pressure washer comprising:
- an engine;
- a pump driven by the engine, the pump including a pump inlet configured to be fluidly coupled to a water source and a pump outlet providing water at an increased water pressure;
- a sprayer including a flow restriction valve and a trigger for manipulating the flow restriction valve so that movement of the trigger selectively opens and closes the flow restriction valve;
- a hose fluidly coupling the pump outlet to the sprayer;
- a flow sensor configured to sense a flow of water provided to the pump;
- and
- a controller coupled to the flow sensor, wherein the controller is configured to activate the pump by starting the engine when the sensed flow indicates a positive flow condition, and wherein the controller is configured to turn off the engine following a set time period of sensed flow at a no-flow condition.
Dependencies are inferred from the claim text.