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US 9,038,923 B2Granted
Fluid level indicator in an airless fluid sprayer
AssigneeWagner Spray Tech Corporation
InventorsWayne D. Robens, Gregory Wayne Parkhurst, James Leo Campbell
Life of this patent
Estimating the term…
Abstract
The present disclosure generally relates to systems and devices for spraying fluid materials such as paints, stains, and the like, and more specifically, but not by limitation, to a fluid level indicator for an airless fluid sprayer. In one example, an airless fluid sprayer is provided and includes a fluid container, a controller, and a fluid level indication module implemented by the controller to generate an indication of a level of fluid material in the fluid container.
Claims20
A paint sprayer comprising:
- a paint container;
- a paint pump configured to pump paint from the paint container;
- a spray nozzle configured to spray paint pressurized by the paint pump;
- an electric drive mechanism that activates the paint pump in response to application of current pulses;
- a controller including:
- a paint level indicator that provides feedback to the user indicative of the paint in the paint container being below a threshold level;
- a counter that stores a count indicative of current pulses applied to the electric drive mechanism;
- and
- a processor that:
- compares the count from the counter to a current pulse threshold value;
- and
- activates the paint level indicator to provide the feedback based on the comparison.
9 more elements
A paint sprayer comprising:
- a paint pump configured to pump paint from a paint container;
- a spray nozzle configured to spray paint pressurized by the paint pump;
- a user activated control;
- an electric drive mechanism that activates the paint pump in response to application of current pulses;
- and
- a controller that:
- determines a number of current pulses applied to the electric drive mechanism;
- compares the number of current pulses to a threshold value that is user-adjustable;
- generates an indication of a level of paint in the paint container based on the comparison;
- and
- adjusts the threshold value in response to a user activated control.
8 more elements
Dependencies are inferred from the claim text.