Patent · US Active

Personal hygiene device having treatment-force-measurement unit

US10398217B2 · kind B2 · utility

0Cited by

5References

19Claims

0Family size

Assignee

The Braun Corporation · DE

Inventors

Norbert Schaefer · Frankfurt am Main, DE
Martin Haas · Belgrade, US
Daniel Dietzel · Kelkheim, DE
Christian Probst · Birkenfeld, DE
Stefan Meier · Neubiberg, DE

Key dates

Filing date	May 12, 2016
Grant date	Sep 3, 2019
Priority date	—
Expiry date	Jul 14, 2037

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61C17/221
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

A personal hygiene device, in particular a toothbrush, has a handle, a treatment head mounted for relative movement with respect to the handle against a spring force when a treatment force is applied in at least one direction onto the treatment head, a treatment-force-measurement unit for determining the applied treatment force comprising an electrically powered coil, a coil core element, and a control circuit for determining a parameter indicative of the inductance of the coil, wherein the coil core element is arranged to be moved with respect to the coil when the treatment head is moved.

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