Patent · US Active

Earpiece for communications

US8265331B2 · kind B2 · utility

3Cited by

3References

17Claims

0Family size

Assignee

BYD Company Limited · CN

Inventors

Jundong Zhou · Lo Wu, CN
Jinjun Wang · Beijing, CN

Key dates

Filing date	Jul 14, 2009
Grant date	Sep 11, 2012
Priority date	—
Expiry date	Feb 20, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH04R25/00
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

An earpiece for communications comprises a frame, a vibration system disposed in the frame and a magnetic field system disposed in the frame. The vibration system includes a vibrating armature, a diaphragm and a connecting rod. The magnetic field system includes a magnet to generate a first magnetic field on a first axis and a coil to generate a second magnetic field on a second axis. One of the magnet and the coil is connected to the frame. The first and the second magnetic fields produce a net magnetic force to cause the vibration system to move. The first axis is parallel to the second axis.

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