Concha-fit electronic hearing protection device

• US 9,479,859 B2
• Filed: 11/18/2013
• Issued: 10/25/2016
• Est. Priority Date: 11/18/2013
• Status: Active Grant

• Current Assignee: 3M Innovative Properties Company (3M Company)
• Original Assignee: 3M Innovative Properties Company (3M Company)
• Inventors: Henry, Paul D., Pescetto, Michael J.
• Primary Examiner(s): Goins, Davetta W
• Assistant Examiner(s): ETESAM, AMIR HOSSEIN
• Application Number:
  US14/082,670
• Publication Number:
  US 20150139474A1
• Time in Patent Office: 1,072 Days
• Field of Search: 381/322, 381/328
• US Class Current: 1/1
• CPC Class Codes: A61F 11/08 internal, e.g. earplugs
• CPC Class Codes: A61F 11/145 electric, e.g. for active noise reduction
• CPC Class Codes: H04R 1/1016 Earpieces of the intra-aural type
• CPC Class Codes: H04R 1/1058 Manufacture or assembly

Abstract

A concha-fit electronic hearing protection device including an eartip and an earpiece body. When the device is fitted in the ear of a user, the eartip externally occludes the ear canal and the earpiece body internally occludes the eartip.

Claims

1. An electronic hearing protection device configured to fit in the ear of a human user, comprising:

an earpiece body configured to fit substantially in the cavum concha of a user'"'"'s ear and configured to receive sound, to process the sound, and to emit processed sound through a speaker port;

and,

an eartip configured to fit into the ear canal of the user'"'"'s ear, the eartip being detachably attached to the earpiece body and comprising a through-passage with a first, sound-receiving opening that is acoustically mated to the speaker port of the earpiece body and with a second, sound-emitting opening that faces toward the inner ear of the user,

wherein the device is configured so that when the device is fitted in the ear of a user, the eartip externally occludes the ear canal and the earpiece body internally occludes the eartip, and

wherein the earpiece body comprises a housing that exhibits an at least generally bilaterally symmetrical shape when viewed along a long axis of the eartip and that comprises at least one contact surface that is configured so that when the device is fitted in the ear of a user, the at least one contact surface of the housing contacts a skin surface of an ear component that defines at least a portion of a radially outer perimeter of the concha of the user'"'"'s ear.

2. The device of claim 1 wherein the at least one contact surface of the housing is configured so that when the device is fitted in the ear of a user, the at least one contact surface of the housing contacts at least one of a skin surface of a tragus, an antitragus, and a portion of an antihelix that is proximate the antitragus, of the user'"'"'s ear.

3. The device of claim 2 wherein the housing comprises at least first and second contact surfaces that are configured so that when the device is fitted in the ear of a user, the first contact surface contacts a first portion of a first skin surface of a first ear component that defines a first portion of the radially outer perimeter of the concha of the user'"'"'s ear, and a second contact surface contacts a second portion of a second skin surface of a second ear component that defines a second portion of the radially outer perimeter of a concha of the user'"'"'s ear, with the areas of contact between the first and second contact surfaces of the housing and the skin surfaces with which they are respectively in contact with, being spaced around the perimeter of the housing with a circumferential separation of at least about 120 degrees.

4. The device of claim 3 wherein the housing is configured so that when the device is fitted into the user'"'"'s ear, the device is held in the ear at least in part by a compression fit of the housing of the earpiece body of the device, with at least any two of a tragus, an antitragus, and a portion of an antihelix that is proximate the antitragus, of the user'"'"'s ear.

5. The device of claim 1 wherein no part of the earpiece body extends into the cimba concha of the user'"'"'s ear.

6. The device of claim 1 wherein no part of the earpiece body extends outward of the cavum concha of the user'"'"'s ear.

7. The device of claim 1 wherein the device provides a Noise Reduction Rating of at least about 18 dB.

8. The device of claim 7 wherein the housing is configured to at least substantially prevent the entry of ambient airborne sound into the interior thereof, and wherein the housing exhibits an Ingress Protection Rating of IP67.

9. The device of claim 8 wherein the housing does not comprise any unoccluded through-openings.

10. The device of claim 7 wherein the device contains an internal, rechargeable, non-removable battery that is located within the housing, and wherein the housing does not comprise a battery door.

11. The device of claim 7 wherein the earpiece body contains a speaker with a mating surface that is mated against a seating surface of a speaker housing of the housing of the earpiece body so as to at least substantially prevent any ambient airborne sound that may be in the interior of the housing, from passing through the speaker port of the housing.

12. The device of claim 11 wherein the mating surface of the speaker is indirectly mated against the seating surface of the speaker housing;

and, wherein the speaker housing is integral with at least a major housing part of the housing of the earpiece body and wherein the speaker housing comprises a speaker housing conduit that is entirely defined by surfaces that are integral with the speaker housing; and

, wherein the speaker housing conduit receives airborne processed sound from the speaker and allows the airborne processed sound to pass therethrough to reach the speaker port.

13. The device of claim 1 wherein the housing of the earpiece body comprises one or more electrical connections by which an internal, rechargeable, non-removable battery that is located within the housing can be charged.

14. The device of claim 1 wherein the through-passage of the eartip is an internal through-passage that is at least generally aligned with a long axis of the eartip.

15. The device of claim 14 wherein the internal through-passage of the eartip does not comprise any level-dependent sound attenuating physical feature.

16. The device of claim 1 wherein the eartip is a single piece of resiliently compressible organic polymeric material with a hardness of less than about 40 on a Shore A scale.

17. The device of claim 1 wherein the earpiece body comprises a microphone for receiving ambient airborne sound and for converting the ambient airborne sound into electronic signals, circuitry for processing the electronic signals, and a speaker for emitting the processed electronic signals as processed sound.

18. The device of claim 17 wherein the microphone is provided on an outward face of the housing of the earpiece body, in a location that is aligned radially on-axis with a long axis of the eartip within a distance of about 2 mm.

19. The device of claim 18 comprising a touch-sensitive switch located on an outward face of the housing of the earpiece body, in a location that is displaced radially off-axis from a long axis of the eartip a distance of at least about 4 mm.

20. A kit comprising at least two earpiece bodies of claim 1 in combination with at least four eartips of claim 1, at least some of the eartips being of different sizes from each other.

21. A kit comprising at least one device of claim 1, in combination with a charging unit configured to charge at least one internal battery of the earpiece body of the device.

22. The kit of claim 21, wherein the charging unit is a portable charging unit that comprises at least one internal battery and that does not require an external power source.