Patent · US Active

Damage-resistant vibrator assemblies and wireless communications devices incorporating same

US8081066B2 · kind B2 · utility

0Cited by

5References

16Claims

0Family size

Assignee

Sony Ericsson Mobile Communications AB · SE

Inventors

Gustav Fagrenius · Dalby, SE
Goran Schack · Täby, SE

Key dates

Filing date	Mar 25, 2009
Grant date	Dec 20, 2011
Priority date	—
Expiry date	Oct 22, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T74/18552
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A vibrator assembly includes an electric motor, a shaft driven by the motor, and a cylindrical weight coaxially positioned on the shaft free end, wherein the cylindrical weight has a center of gravity that is radially offset from the shaft axis. The cylindrical weight includes a first portion that is lighter in weight than a second portion. When the vibrator assembly is installed within an electronic device, the cylindrical shape of the weight limits the amount of shaft deflection that can occur when the electronic device is dropped or subjected to other impact forces.

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