Method and device for micro-dosing a liquid
First Claim
1. A micro-dosing device for micro-dosing a liquid from a liquid reservoir, the micro-dosing device comprising:
- a structure configured to receive a liquid reservoir;
a drive unit comprising a first end, a second end, and a drive motor;
a displacement piston configured to move axially and dispense the liquid from the liquid reservoir when the drive motor activates and axially displaces the drive unit relative to the structure and relative to a sleeve wherein the sleeve comprises an inner thread that engages the outer thread of a rotatable member and the rotatable member is coupled to the first end of the drive unit and comprises an outer thread coaxially arranged around an axis of rotation; and
an anti-rotation element disposed between the drive unit and the sleeve wherein the anti-rotation element prevents a rotation of the drive unit relative to the sleeve and permits an axial displacement of the drive unit relative to the sleeve and wherein the anti-rotation element extends radially outward from the periphery of the drive unit through a longitudinal slot formed through the structure and through the sleeve.
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Accused Products
Abstract
Methods and devices for micro-dosing a liquid are disclosed herein. According to one embodiment, a method for a time controlled micro-dosing of a liquid from a liquid reservoir includes: receiving the liquid reservoir with a structure wherein the structure is portable; securing the liquid reservoir to the structure; connecting a second end of a drive unit to a piston disposed within the liquid reservoir; activating a drive motor; displacing the drive unit with respect to the structure towards the piston in an axial direction with the drive motor; moving the piston axially within the liquid reservoir; and micro-dosing the liquid from the liquid reservoir.
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Citations
20 Claims
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1. A micro-dosing device for micro-dosing a liquid from a liquid reservoir, the micro-dosing device comprising:
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a structure configured to receive a liquid reservoir; a drive unit comprising a first end, a second end, and a drive motor; a displacement piston configured to move axially and dispense the liquid from the liquid reservoir when the drive motor activates and axially displaces the drive unit relative to the structure and relative to a sleeve wherein the sleeve comprises an inner thread that engages the outer thread of a rotatable member and the rotatable member is coupled to the first end of the drive unit and comprises an outer thread coaxially arranged around an axis of rotation; and an anti-rotation element disposed between the drive unit and the sleeve wherein the anti-rotation element prevents a rotation of the drive unit relative to the sleeve and permits an axial displacement of the drive unit relative to the sleeve and wherein the anti-rotation element extends radially outward from the periphery of the drive unit through a longitudinal slot formed through the structure and through the sleeve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for a time controlled micro-dosing of a liquid from a liquid reservoir, the method comprising:
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providing a portable structure containing a liquid reservoir secured to the portable structure wherein the structure contains a drive unit connected to a displacement piston disposed within the liquid reservoir, wherein the drive unit has a drive motor, and wherein the drive unit comprises an anti-rotation element that extends radially outward from the periphery of the drive unit through a longitudinal slot formed through the structure and through a sleeve coupled to the structure; and micro-dosing the liquid from the liquid reservoir by activating the drive motor so as to move the displacement piston axially within the liquid reservoir by rotating with the drive unit a rotatable member coupled to the drive unit, the rotatable member having an outer thread which engages an inner thread disposed on the sleeve, and arranged between the drive unit and the second member is the anti-rotation element preventing rotation of the drive unit relative to the sleeve and permitting axial displacement of the drive unit relative to the sleeve. - View Dependent Claims (18, 19, 20)
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Specification