Patent · US Active

Personal hygiene device with resonant motor

US10463461B2 · kind B2 · utility

2Cited by

2References

18Claims

0Family size

Assignee

The Procter & Gamble Company · US

Inventors

Torsten Klemm · Bad Soden, DE
Kervin Heinrich Küchler · Darmstadt, DE
Andreas Moehring · Kronberg, DE
Norbert Schaefer · Frankfurt am Main, DE
Martin Stratmann · Meerbusch, DE
Carl Stückrath · Friedberg, DE

Key dates

Filing date	Jul 26, 2018
Grant date	Nov 5, 2019
Priority date	—
Expiry date	Jul 26, 2038

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61H7/00
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A personal hygiene device has a resonant motor and a motor control unit for applying a periodic voltage signal with a driving frequency at the resonant motor for driving the resonant motor into an oscillating motion with an oscillating frequency equal to the driving frequency. The motor control unit comprises a synthesizer circuit for digitally synthesizing the periodic voltage signal from voltage pulses of variable length provided with a pulse frequency higher than the driving frequency such that at least two voltage pulses are applied at least in one of two half cycles of each period of the periodic voltage signal.

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