IP Library › Patent Application 13055938
Patent Application
App. No. 13/055,938

MEMBRANE FOR AN ACOUSTIC TRANSDUCER

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Quick Facts
Patent No.
US None
App. No.
13/055,938
Abstract

A membrane for an acoustic transducer is provided which comprises a first portion having a first stiffness, and a second portion comprising a first subsection having a second stiffness and a second subsection having a third stiffness, wherein the second stiffness and the third stiffness are different.

Claims (22)

1 . A membrane comprising:

a first portion having a first stiffness, and

a second portion comprising a first subsection having a second stiffness and a second subsection having a third stiffness, wherein the second stiffness and the third stiffness are different.

2 . The membrane according to claim 1 , wherein the second portion is arranged with at least a portion circumferential with respect to the membrane.

3 . The membrane according to claim 1 , wherein the second stiffness and the third stiffness are chosen in such a way that a restoring force is equal for the first subsection and the second subsection.

4 . The membrane according to claim 1 , wherein the membrane has a non circular shape.

5 . The membrane according to claim 4 , wherein the membrane has a rectangular shape.

6 . The membrane according to claim 1 , wherein the first subsection comprises a first material, and the second subsection comprises a second material, wherein the first material has a first stiffness, and the second material has a second stiffness different from the first stiffness.

7 . The membrane according to claim 1 , wherein the first subsection has a first thickness and the second subsection has a second thickness, wherein the first thickness is different from the second thickness.

8 . The membrane according to claim 7 , wherein the subsection having the greater thickness comprises an additional layer.

9 . The membrane according to claim 1 ,

wherein the first subsection and the second subsection comprise a common layer, and

wherein the first subsection and the second subsection comprise a common layer and the subsection having the greater stiffness comprises an additional layer.

10 . The membrane according to claim 1 ,

wherein the first subsection has a first cross-section,

wherein the second subsection has a second cross-section which is different from the first cross-section.

11 . An acoustic transducer comprising a membrane according to claim 1 .

12 . The acoustic transducer according to claim 11 , further comprising:

an actuating unit,

wherein the actuating unit is adapted to apply a force to the membrane.

13 . The acoustic transducer according to claim 12 , wherein the actuating unit comprises a magnet system.

14 . The acoustic transducer according to claim 12 , wherein the actuating unit comprises a piezoelectric element.

Assignments (12)
CORRECTIVE ASSIGNMENT TO CORRECT THE REMOVE APPLICATION 12298143 PREVIOUSLY RECORDED ON REEL 042762 FRAME 0145. ASSIGNOR(S) HEREBY CONFIRMS THE SECURITY AGREEMENT SUPPLEMENT. Recorded Oct 22, 2019
From: NXP B.V.
To: MORGAN STANLEY SENIOR FUNDING, INC.
Reel/Frame 051145/0184 →
CORRECTIVE ASSIGNMENT TO CORRECT THE REMOVE APPLICATION 12298143 PREVIOUSLY RECORDED ON REEL 038017 FRAME 0058. ASSIGNOR(S) HEREBY CONFIRMS THE SECURITY AGREEMENT SUPPLEMENT. Recorded Oct 22, 2019
From: NXP B.V.
To: MORGAN STANLEY SENIOR FUNDING, INC.
Reel/Frame 051030/0001 →
CORRECTIVE ASSIGNMENT TO CORRECT THE REMOVE APPLICATION 12298143 PREVIOUSLY RECORDED ON REEL 039361 FRAME 0212. ASSIGNOR(S) HEREBY CONFIRMS THE SECURITY AGREEMENT SUPPLEMENT. Recorded Oct 22, 2019
From: NXP B.V.
To: MORGAN STANLEY SENIOR FUNDING, INC.
Reel/Frame 051029/0387 →
CORRECTIVE ASSIGNMENT TO CORRECT THE REMOVE APPLICATION 12298143 PREVIOUSLY RECORDED ON REEL 042985 FRAME 0001. ASSIGNOR(S) HEREBY CONFIRMS THE SECURITY AGREEMENT SUPPLEMENT. Recorded Oct 22, 2019
From: NXP B.V.
To: MORGAN STANLEY SENIOR FUNDING, INC.
Reel/Frame 051029/0001 →
RELEASE OF SECURITY INTEREST Recorded Sep 10, 2019
From: MORGAN STANLEY SENIOR FUNDING, INC.
To: NXP B.V.
Reel/Frame 050745/0001 →
CORRECTIVE ASSIGNMENT TO CORRECT THE REMOVE APPLICATION 12681366 PREVIOUSLY RECORDED ON REEL 038017 FRAME 0058. ASSIGNOR(S) HEREBY CONFIRMS THE SECURITY AGREEMENT SUPPLEMENT. Recorded May 9, 2017
From: NXP B.V.
To: MORGAN STANLEY SENIOR FUNDING, INC.
Reel/Frame 042985/0001 →
CORRECTIVE ASSIGNMENT TO CORRECT THE REMOVE APPLICATION 12681366 PREVIOUSLY RECORDED ON REEL 039361 FRAME 0212. ASSIGNOR(S) HEREBY CONFIRMS THE SECURITY AGREEMENT SUPPLEMENT. Recorded May 9, 2017
From: NXP B.V.
To: MORGAN STANLEY SENIOR FUNDING, INC.
Reel/Frame 042762/0145 →
PATENT RELEASE Recorded Aug 17, 2016
From: MORGAN STANLEY SENIOR FUNDING, INC.
To: NXP B.V.
Reel/Frame 039707/0471 →
CORRECTIVE ASSIGNMENT TO CORRECT THE REMOVE APPLICATION 12092129 PREVIOUSLY RECORDED ON REEL 038017 FRAME 0058. ASSIGNOR(S) HEREBY CONFIRMS THE SECURITY AGREEMENT SUPPLEMENT. Recorded Jul 14, 2016
From: NXP B.V.
To: MORGAN STANLEY SENIOR FUNDING, INC.
Reel/Frame 039361/0212 →
SECURITY AGREEMENT SUPPLEMENT Recorded Mar 7, 2016
From: NXP B.V.
To: MORGAN STANLEY SENIOR FUNDING, INC.
Reel/Frame 038017/0058 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 17, 2011
From: NXP B.V.
To: KNOWLES ELECTRONICS ASIA PTE. LTD.
Reel/Frame 027071/0094 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 26, 2011
From: WINDISCHBERGER, SUSANNE; HADDAD, GHOLAMALI
To: NXP, B.V.
Reel/Frame 025697/0643 →