Electric linear repetitive pulsed drive for operating equipment

Patent metadata

Field	Value
Publication number	US-10855207-B2
Application number	US-201716087745-A
Country	US
Kind code	B2
Filing date	Mar 27, 2017
Priority date	Mar 27, 2016
Publication date	Dec 1, 2020
Grant date	Dec 1, 2020

Abstract

An electric linear repetitive pulsed drive for an operation of apparatuses, in particular for an operation of apparatuses for improving an efficiency of which a working energy that is output in a pulsed manner, with at the same time low repetition frequencies, is advantageous, includes a magnetic circuit with an air gap and an electric coil, a magnetic shape-memory adjustment element and a reset unit, and a control electronics unit, wherein the electric linear repetitive pulsed drive outputs its energy in discrete-time fashion, bundled in short time intervals, that is in pulses.

First claim

The invention claimed is:

1. An electric apparatus, comprising:
at least one electric linear repetitive pulsed drive configured to output working pulses, the at least one electric linear repetitive pulsed drive comprising:
a magnetic circuit with an air gap and an electric coil,
a magnetic shape-memory adjustment element and a reset unit, and
a controller, wherein
the electric linear repetitive pulsed drive repetitively outputs the working pulses in discrete-time intervals,
wherein to thereby minimize a reset time of the pulsed drive, the controller is further configured to output an inversely polarized current pulse as a deletion pulse, which is initiated in the reversal point of the working pulse, to bring the magnetic shape-memory adjustment element that is situated in the air gap of the magnetic circuit into a fast expansion, wherein the current pulse abruptly deletes the magnetic field of the magnetic circuit, as a result of which the adjustment element is brought back to its original length by a reset spring of the reset unit.

2. The electric apparatus according to claim 1 , wherein a rise time, a rise course, a deflection, a pulse duration, a fall time, a fall course, and a repetition frequency of the electric linear repetitive pulsed drive are settable during a manufacture or manually by a user and wherein the energy that is output per working pulse remains constant if only the repetition frequency is changed.

3. The electric apparatus according to claim 1 , wherein the electric apparatus is a body care apparatus and/or a body treatment apparatus.

4. The electric apparatus according to claim 1 , wherein the electric apparatus is a shaver apparatus, a beard cutter, a haircutter, an epilator apparatus, a hair-removal apparatus, a pigmenting apparatus, a tattoo apparatus, a pricking apparatus, or an electric toothbrush.

5. An electric apparatus, comprising:
an electric coil;
a magnetic circuit magnetically coupled to the electric coil, the magnetic circuit having a magnetic core with an air gap;
a magnetic shape-memory element located in the air gap of the magnetic core, the magnetic shape-memory element being deformable by a magnetic field produced from the magnetic circuit;
a controller electrically connected to the electric coil, the controller being configured to repeatedly output discrete-time pulses to elongate a length of the magnetic shape-memory element within the air gap by energizing the magnetic circuit.

6. The electric apparatus according to claim 5 , wherein
the controller is further configured to output inversely polarized discrete-time pulses during a reversal point of the discrete-time pulses.

7. The electric apparatus according to claim 6 , further comprising
a reset spring configured to press against the magnetic shape-memory element to reset the length of the magnetic shape-memory element within the air gap.

8. The electric apparatus according to claim 5 , further comprising
a reset spring configured to press against the magnetic shape-memory element to reset the length of the magnetic shape-memory element within the air gap.

9. An electric apparatus, comprising:
at least one electric linear repetitive pulsed drive configured to output working pulses, the at least one electric linear repetitive pulsed drive comprising:
a magnetic circuit with an air gap and an electric coil,
a magnetic shape-memory adjustment element and a reset unit, and
a controller, wherein
the electric linear repetitive pulsed drive repetitively outputs the working pulses in discrete-time intervals,

wherein the reset unit further comprises a further actuated magnetic shape-memory adjustment element configured to minimize a rise time of the electric linear repetitive pulsed drive, wherein the reset unit is free of a reset spring.

10. The electric apparatus according to claim 9 , wherein the electric apparatus is a body care apparatus and/or a body treatment apparatus.

11. The electric apparatus according to claim 9 , wherein the electric apparatus is a shaver apparatus, a beard cutter, a haircutter, an epilator apparatus, a hair-removal apparatus, a pigmenting apparatus, a tattoo apparatus, a pricking apparatus, or an electric toothbrush.

12. An electric apparatus, comprising:
at least one electric linear repetitive pulsed drive configured to output working pulses, the at least one electric linear repetitive pulsed drive comprising:
a magnetic circuit with an air gap and an electric coil,
a magnetic shape-memory adjustment element and a reset unit, and
a controller, wherein
the electric linear repetitive pulsed drive repetitively outputs the working pulses in discrete-time intervals,

wherein a noise production of the magnetic shape-memory adjustment element of the pulsed drive is reduced by noise-optimizing courses of the rise and fall curves of the magnetic field and the apparatus is without a performance-affecting acoustic damping of the cinematics and without a housing that encompasses the electric linear repetitive pulsed drive.

13. The electric apparatus according to claim 12 , wherein the electric apparatus is a body care apparatus and/or a body treatment apparatus.

14. The electric apparatus according to claim 12 , wherein the electric apparatus is a shaver apparatus, a beard cutter, a haircutter, an epilator apparatus, a hair-removal apparatus, a pigmenting apparatus, a tattoo apparatus, a pricking apparatus, or an electric toothbrush.

Assignees

• Eto Magnetic Gmbh

Inventors

• Blank Anton

Classifications

• F03G7/06147

  Magnetic shape memory alloys, e.g. ferro-magnetic alloys · CPC title

• A61N1/36017 Primary

  with leads or electrodes penetrating the skin · CPC title

• H10N35/80

  Constructional details · CPC title

• F03G7/0612

  using polymers · CPC title

• H02N2/067 Primary

  generating drive pulses · CPC title