Patent · US Active

Electric appliance for personal care

US10864644B2 · kind B2 · utility

1Cited by

16References

22Claims

0Family size

Assignee

The Braun Corporation · DE

Inventors

Bernhard Kraus · Solms, DE
Thomas Verstege · Frankfurt am Main, DE
Uwe Schober · Königstein, DE
Frank Ziegler · Karben, DE

Key dates

Filing date	Apr 11, 2018
Grant date	Dec 15, 2020
Priority date	—
Expiry date	Jun 20, 2038

Classification

Technology area (CPC H)Electricity
CPC primaryH02K2213/03
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

The present invention relates to electric appliances for personal care, in particular electric shavers, comprising a magnetic linear drive unit having first and second drive components supported for linear displacement relative to each other by a spring device and adapted to magnetically interact with each other. The spring device includes at least one leaf spring having a constricted section in a central region of the leaf spring, wherein surfaces of the at least one leaf spring neighboring the constricted section are shaped convex. Such convex surfaces may have a parabolic contour.

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