Electric appliances having electric motors for driving oscillatory elements
AssigneeBruan GmbH
InventorBernhard Kraus
Life of this patent
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Abstract
an electric appliance includes an electric motor having a first oscillatory element, a second oscillatory element and an electric coil configured to generate a magnetic field to drive the first and second oscillatory elements. The electric appliance also includes a movable component and a first spring element connecting the movable component to the first oscillatory element. Notably, the first oscillatory element and the second oscillatory element are arranged to drive each other in oscillatory motions of opposite phase in response to the magnetic field of the electric coil.
Claims25
An electric appliance, comprising:
- a housing;
- an electric motor carried by the housing and including:
- a first oscillatory element,
- a second oscillatory element, and
- an electric coil configured to generate a magnetic field to drive the first and second oscillatory elements;
- a movable component;
- and
- a first spring element connecting the movable component to the first oscillatory element, wherein each of the first oscillatory element, the second oscillatory element, and the movable component are configured for oscillatory motion relative to each other, wherein the first oscillatory element and the second oscillatory element are configured to mutually drive each other in oscillatory motions of opposite phase with respect to the housing in response to the magnetic field of the electric coil, and wherein the oscillatory motions of the first oscillatory element drive the oscillatory motion of the movable component.
An electric shaver, comprising:
- a housing;
- an electric motor carried by the housing and including:
- a first oscillatory element,
- a second oscillatory element, and
- an electric coil configured to generate a magnetic field to drive the first and second oscillatory elements;
- a shaving head;
- and
- a first spring element connecting the shaving head to the first oscillatory element,
- wherein each of the first oscillatory element, the second oscillatory element, and the shaving head are configured for oscillatory motion relative to each other, wherein the first oscillatory element and the second oscillatory element are configured to mutually drive each other in oscillatory motions of opposite phase with respect to the housing in response to the magnetic field of the electric coil and wherein the oscillatory motions of the first oscillatory element drive the oscillatory motion of the shaving head.
A method of controlling an electric appliance, comprising:
- providing an electric appliance including:
- a housing;
- an electric motor carried by the housing and comprising:
- a first oscillatory element,
- a second oscillatory element, and
- an electric coil configured to generate a magnetic field to drive the first and second oscillatory elements;
- connecting a movable component to one of the first oscillatory element and the second oscillatory element by way of a first spring element, wherein each of the first oscillatory element, the second oscillatory element, and the movable component are configured for oscillatory motion relative to each other, and wherein the oscillatory motion of the first oscillatory element drives the oscillatory motion of the movable component;
- supplying a flow of current through the electric coil, thereby generating a magnetic field to drive the first and second oscillatory elements;
- and
- reversing the flow of current though the electric coil, thereby reversing a polarity of the magnetic field causing the first oscillatory element and the second oscillatory element to mutually drive each other in oscillations of opposite phase with respect to the housing.
Dependencies are inferred from the claim text.