Cosmetic applicator with torque limiter
First Claim
Patent Images
1. A mascara applicator comprising:
- a handle;
a drive coupled to the handle;
an applicator head coupled to the drive by a first shaft and a second shaft that are aligned along a common axis, the applicator head comprising an applicator surface and a plurality of applicator elements that extend radially away from the applicator surface, the applicator elements being configured to separate keratinous fibers and apply a mascara composition thereto; and
a torque limiter comprising a magnetic coupling, the magnetic coupling including a first magnet and a second magnet, the first magnet being coupled to one of the first and second shafts, the second magnet being coupled to the other of the first and second shafts, and the first and second magnets being magnetically coupled to each other such that the torque limiter prevents the torque applied via the applicator head from exceeding a predetermined allowable torque that is from 0.05 to 5 ounce inches;
wherein the applicator head is configured to be driven by the drive and to rotate at a speed of 1-200 rpm.
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Abstract
A cosmetic applicator includes a handle, a drive coupled to the handle, an applicator head coupled to the drive, and a torque limiter. The torque limiter includes a magnetic coupling, the magnetic coupling being coupled to at least one of the drive and the applicator head such that the torque applied via the applicator head does not exceed a predetermined allowable torque.
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Citations
20 Claims
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1. A mascara applicator comprising:
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a handle; a drive coupled to the handle; an applicator head coupled to the drive by a first shaft and a second shaft that are aligned along a common axis, the applicator head comprising an applicator surface and a plurality of applicator elements that extend radially away from the applicator surface, the applicator elements being configured to separate keratinous fibers and apply a mascara composition thereto; and a torque limiter comprising a magnetic coupling, the magnetic coupling including a first magnet and a second magnet, the first magnet being coupled to one of the first and second shafts, the second magnet being coupled to the other of the first and second shafts, and the first and second magnets being magnetically coupled to each other such that the torque limiter prevents the torque applied via the applicator head from exceeding a predetermined allowable torque that is from 0.05 to 5 ounce inches; wherein the applicator head is configured to be driven by the drive and to rotate at a speed of 1-200 rpm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 17, 18, 19, 20)
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12. A mascara applicator comprising:
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a handle; a drive coupled to the handle; an applicator head coupled to the drive by a first shaft and a second shaft that share a common axis, the applicator head comprising an applicator surface and a plurality of applicator elements that extend radially away from the applicator surface, the applicator elements being configured to separate keratinous fibers and apply a mascara composition thereto; and a torque limiter comprising a magnetic coupling, the magnetic coupling including a first magnet and a material having a medium to high magnetic permeability, the first magnet being coupled to one of the first and second shafts, the material being coupled to the other of the first and second shafts, and the first magnet and the material being magnetically coupled to each other such that the torque limiter prevents the torque applied via the applicator head from exceeding a predetermined allowable torque that is from 0.05 to 5 ounce inches; wherein the applicator head is configured to be driven by the drive and to rotate at a speed of 1-200 rpm. - View Dependent Claims (13, 14, 15, 16)
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Specification