IP Library › Granted Patent US 8,611,581
Granted Patent B2
US 8,611,581 · App. 11/651,557 · Granted Dec 17, 2013

Earphone device

Inventors: Tomohiro Matsuo (Tokyo, JP); Takashi Ohta (Tokyo, JP); Koji Nageno (Tokyo, JP); Tomohiro Ito (Tokyo, JP)
Assignee: Sony Corporation
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 8,611,581
App. No.
11/651,557
Granted
Dec 17, 2013
Kind
B2
Abstract

An earphone device includes a housing having a driver unit, and a sound guide tube mounted on a front surface of the housing to protrude from the front surface, in which the sound guide tube is disposed at a position deviated from a center position of the housing.

Claims (14)

1. An earphone device comprising:

a housing having a driver unit including a diaphragm; and

a sound guide tube mounted on a front portion of the housing to protrude from the front portion, wherein

the sound guide tube is at a position deviated from a center position of the housing,

the position of the front portion of the housing is fixed with respect to the rest of the housing, and

the front portion presses the driver unit toward a rear portion of the housing, with a cushion member interposed between the front portion and the driver unit; and

a center line of the driver unit and a center line of the sound guide tube meet at a point behind the diaphragm.

2. The earphone device according to claim 1 , wherein

the sound guide tube comprises a sound guide tube tip, and

a distance between a center point of the sound guide tube tip and the center line of the driver unit is no less than 3 mm and no more than 7 mm.

3. The earphone device according to claim 1 ,

wherein an angle between the center line of the driver unit and the center line of the sound guide tube is no less than 10° and no more than 60° with respect to a center line of the housing.

4. The earphone device according to claim 1 , wherein the sound guide tube has a tip made of flexible material.

5. The earphone device according to claim 1 , wherein the front portion of the housing includes a hole disposed next to the cushion member.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 6, 2007
From: MATSUO, TOMOHIRO; OHTA, TAKASHI; NAGENO, KOJI; ITO, TOMOHIRO
To: SONY CORPORATION
Reel/Frame 019128/0492 →
Priority Claims (1)
JP P2006-005412 · Jan 12, 2006 · national
Continuity (1)
Related Publication 20070189570A1 · Aug 16, 2007