Fluid dispenser
First Claim
1. A dispenser for dispensing fluid comprising:
- a variable volume chamber with a plunger disposed within the chamber;
a motor configured to drive translation movement of the plunger to cause a change in volume in the chamber;
a trigger; and
a controller in communication with the motor and the trigger, the controller being configured to;
receive a first variable input based on a first subject to which fluid is to be applied;
receive a second variable input based on a second subject to which fluid is to be applied;
in response to actuation of the trigger, direct the motor to drive translation movement of the plunger to one or more of expel fluid from the chamber (expel stroke) and draw fluid into the chamber (draw stroke);
automatically control the volume of fluid expelled from the chamber during a first expel stroke based on the first variable input such that only a first volume of fluid is expelled from the chamber, the first volume of fluid being less than an entire volume of fluid in the chamber;
following the first expel stroke, cause a first draw stroke to occur, the fluid drawn into the chamber during the first draw stroke having the same volume as the first volume of fluid; and
following the first draw stroke, automatically control the volume of fluid expelled from the chamber during a second expel stroke based on the second variable input such that only a second volume of fluid is expelled from the chamber, the second volume of fluid being less than the entire volume of fluid in the chamber.
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Accused Products
Abstract
Described herein is a dispenser for dispensing fluid that, integrated into one hand piece, comprises a variable volume chamber with a plunger disposed within the chamber and a chamber inlet and outlet. The inlet and outlet communicate directly with a common chamber volume and the plunger translates in a linear direction relative to the chamber along a common longitudinal axis to expel fluid from the chamber (expel stroke) and/or draw fluid into the chamber (drawing stroke). The plunger is linked to a controller, a power source and a motor that drives translation movement of the plunger. The dispenser described herein offers a variety of advantages over the art including accurate dosing without the user having the manually regulate the dose amount—the amount to be dosed is related to the volume of fluid in the chamber which can be pre-set or varied automatically using sensors and controllers.
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Citations
19 Claims
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1. A dispenser for dispensing fluid comprising:
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a variable volume chamber with a plunger disposed within the chamber; a motor configured to drive translation movement of the plunger to cause a change in volume in the chamber; a trigger; and a controller in communication with the motor and the trigger, the controller being configured to; receive a first variable input based on a first subject to which fluid is to be applied; receive a second variable input based on a second subject to which fluid is to be applied; in response to actuation of the trigger, direct the motor to drive translation movement of the plunger to one or more of expel fluid from the chamber (expel stroke) and draw fluid into the chamber (draw stroke); automatically control the volume of fluid expelled from the chamber during a first expel stroke based on the first variable input such that only a first volume of fluid is expelled from the chamber, the first volume of fluid being less than an entire volume of fluid in the chamber; following the first expel stroke, cause a first draw stroke to occur, the fluid drawn into the chamber during the first draw stroke having the same volume as the first volume of fluid; and following the first draw stroke, automatically control the volume of fluid expelled from the chamber during a second expel stroke based on the second variable input such that only a second volume of fluid is expelled from the chamber, the second volume of fluid being less than the entire volume of fluid in the chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A dispenser for dispensing fluid comprising:
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a variable volume chamber with a plunger disposed within the chamber; a motor configured to drive translation movement of the plunger thereby causing a change in volume in the chamber; a trigger; a controller in communication with the motor, and the trigger, the controller being configured to; receive at least one variable input based on a subject to which the fluid is to be applied; automatically adjust a position of the plunger based on the at least one variable input to control the volume of fluid expelled from the chamber during an expel stroke; in response to the activation of the trigger, direct the motor to drive translation movement of the plunger to cause less than the entire volume of fluid to be expelled from the chamber; and following the expel stroke, direct the motor to drive translation movement of the plunger to draw fluid into the chamber, the fluid drawn into the chamber having the same volume as the less than the entire volume of fluid expelled from the chamber in the preceding expel stroke. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification