NECKLOOP FOR TELELOOP HEARING AID SYSTEM

• US 20100220841A1
• Filed: 02/17/2010
• Published: 09/02/2010
• Est. Priority Date: 02/18/2009
• Status: Active Grant

• Current Assignee: Oticon A/S (William Demant Fonden)
• Original Assignee: Oticon A/S (William Demant Fonden)
• Inventors: HOLST, Kristian Kiehn
• Granted Patent: US 8,494,191 B2
• Time in Patent Office: Days
• US Class Current: 379/52
• CPC Class Codes: H04R 25/554 using a wireless connection, e.g. between microphone and amplifier or using Tcoils

Abstract

The invention relates to a neckloop for being coupled with a transformer element and for generating an electromagnetic signal for being received by a telecoil of a hearing device or by an induction receiver. In order to avoid strangulation of the person wearing the neckloop the neckloop comprises a teleloop cable having a first end and a second end, and a first magnet and a second magnet for forming a clasp of the neckloop. The first and second magnets are of opposite polarity. The first magnet is provided with a first plating and the second magnet is provided with a second plating. The first plating is in direct contact with the first end and the second plating is in direct contact with the second end.

Claims

1. Neckloop comprising a teleloop cable with an insulation layer, where the teleloop cable is electrically or inductively coupled to a transmitter, and

where the teleloop cable has a first end and a first magnet at this first end, and a second end and a second magnet at this second end, and

wherein the first magnet and the second magnet are forming a releasable clasp of the neckloop,

wherein further the first magnet is provided with a first plating and the second magnet is provided with a second plating, and wherein the first plating is in direct contact with the first end and the second plating is in direct contact with the second end.

2. Neckloop of claim 1, wherein the material of the first and second platings has an electrical conductivity of more than 10.000.000 S/m, particularly more than 40.000.000 S/m, and, particularly, comprises Silver and/or Gold.

3. Neckloop of claim 1 or 2, wherein the thickness of the first and/or second plating is between 20 μ

m and 40 μ

m.

4. Neckloop of claim 1, wherein the first and/or second magnet is provided with an intermediate material layer between the first and/or second plating and the first and/or second magnet, respectively.

5. Neckloop of claim 4, wherein the material of the intermediate layer comprises nickel.

6. Neckloop of claim 1, wherein, when the first and second magnets form the clasp, the contact resistance between the first and second ends is between 0.5 mΩ

and 5 mΩ

, particularly between 0.8 mΩ and

1.5 mΩ

.

7. Neckloop of claim 1, wherein, when the first and second magnets form the clasp, a release force for releasing the first and second magnets from each other is between 5N and 50N, particularly between 5N and 25N.

8. Neckloop of claim 1, wherein the first and second magnets comprises respective recesses, in which recesses the first and second ends respectively are arranged and, particularly, soldered to the first and second plating.

9. Neckloop as claimed in claim 1, wherein the first and second magnets are partitioned in oppositely polarized pole pairs comprising at least a first and a second pole, and where either

the magnets are arranged such that the clasping force is provided by a single pair of oppositely polarized poles of the first and the second magnets respectively, or

the magnets are provided such that the clasping force is provided by at least two oppositely polarized poles of each magnet, whereby

the magnetic force is provided either transversely to the direction of pull, or the magnetic force is provided in parallel with the direction of pull, when the two magnets of the clasp are pulled apart by a pulling force on the teleloop cable of the neckloop.

10. Neckloop system comprising:

a neckloop according to claim 1, and

a transformer element coupled to the neckloop.

11. Neckloop system of claim 10, wherein the first or the second magnet is provided at the transformer element.

12. Neckloop system of claim 10 or 11, further comprising a wireless receiver.

13. Neckloop system of claim 12, wherein the wireless receiver is provided at the transformer element.

14. Hearing device system comprising:

a neckloop according to claim 1, and

a transformer element coupled to the neckloop, wherein the hearing device system further comprises

a hearing device having a telecoil, or

an induction receiver.