IP Library Granted Patent US 8,068,634
Granted Patent B2
US 8,068,634 · App. 12/158,370 · Granted Nov 29, 2011

Diaphragm and speaker using same

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 8,068,634
App. No.
12/158,370
Granted
Nov 29, 2011
Kind
B2
Abstract

A first enforcing rib, a second enforcing rib, and a third enforcing rib are integrally formed at least at one of a front side and a back side of a diaphragm, the first enforcing rib being formed as an aggregate of a plurality of hexagons, enhancing strength and achieving light weight of a speaker using the diaphragm, preventing a difficulty of the speaker in emitting an audio sound.

Claims (14)

1. A diaphragm made of synthetic resin comprising:

a first enforcing rib, a second enforcing rib and a third enforcing rib being integrally formed at least at one of a front side and a back side of the diaphragm,

wherein the first enforcing rib includes a plurality of hexagons extending between a through-hole and an edge of the diaphragm, and

the second enforcing rib and the third enforcing rib are respectively formed at the through-hole and the edge of the diaphragm, and are a different shape than the first enforcing a rib.

2. The diaphragm of claim 1 ,

wherein a molding density of the first enforcing rib formed around the through-hole is higher than a molding density of the first enforcing rib formed at an outer part of the through-hole.

3. The diaphragm of claim 2 ,

wherein the second enforcing rib is formed at an outer periphery of the through-hole in a ring shape and the third enforcing rib is formed at the edge of diaphragm in a ring shape.

4. A speaker comprising:

a diaphragm of claim 1 .

5. A speaker comprising:

a diaphragm of claim 2 .

6. A speaker comprising:

a diaphragm of claim 3 .

Assignments (4)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 28, 2024
From: PANASONIC HOLDINGS CORPORATION
To: PANASONIC AUTOMOTIVE SYSTEMS CO., LTD.
Reel/Frame 066957/0984 →
CHANGE OF NAME Recorded Feb 21, 2024
From: PANASONIC CORPORATION
To: PANASONIC HOLDINGS CORPORATION
Reel/Frame 066644/0558 →
CHANGE OF NAME Recorded Nov 11, 2008
From: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
To: PANASONIC CORPORATION
Reel/Frame 021818/0725 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 17, 2008
From: TSUCHIYA, GORO
To: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
Reel/Frame 021543/0821 →