The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 23, 2013
Filed:
Dec. 17, 2010
Michael Stolper, Eschborn, DE;
Heiko Bornheimer, Wiesbaden, DE;
Joachim Lepper, Usingen, DE;
Philipp Jung, Griesheim, DE;
Armin Schwarz-hartmann, Wendelsheim, DE;
Peter Trawinski, Weiterstadt, DE;
Michael Stolper, Eschborn, DE;
Heiko Bornheimer, Wiesbaden, DE;
Joachim Lepper, Usingen, DE;
Philipp Jung, Griesheim, DE;
Armin Schwarz-Hartmann, Wendelsheim, DE;
Peter Trawinski, Weiterstadt, DE;
Braun GmbH, Kronberg, DE;
Abstract
An electric toothbrush is disclosed. The toothbrush includes a housing; a brush; an electric motor for driving the brush; a power supply for providing the electric power required for operation of the toothbrush; a switch mechanism for turning the drive on and off; and an electronic circuit for adjusting the effective voltage (U) applied to the electric motor. In operation, a voltage supplied by the power supply declines with the discharge status of the power supply from a high-voltage range to a low-voltage range. During operation of the toothbrush in the high-voltage range (H), the effective voltage (U) applied to the electric motor is lowered to a level at which the electric motor has reached a rotational speed corresponding essentially to the rotational speed of the electric motor in the medium-voltage range.