Patent · US Active

Electric toothbrush

US8424143B2 · kind B2 · utility

1Cited by

8References

9Claims

0Family size

Assignee

The Braun Corporation · DE

Inventors

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

Key dates

Filing date	Dec 17, 2010
Grant date	Apr 23, 2013
Priority date	—
Expiry date	Jul 8, 2031

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61C17/221
WIPO fieldMedical technology
WIPO sectorInstruments

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 (UMot) 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 (UMot) 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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.