IP Library › Granted Patent US 12,396,893
Granted Patent B2
US 12,396,893 · App. 18/732,425 · Granted Aug 26, 2025

Apparatuses, systems, and methods for increasing or manipulating noise attenuation in hearing protection device

Inventors: John Jenkins (Morris Plains, NJ); Scott Hutt (Morris Plains, NJ); Wei Sun (Shanghai, CN); Yongjun Chen (Shanghai, CN); Lei Jiang (Shanghai, CN)
A61F11/14B29D99/00G10K11/162
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Quick Facts
Patent No.
US 12,396,893
App. No.
18/732,425
Granted
Aug 26, 2025
Kind
B2
Abstract

A protection cup for a hearing protection device (HPD) is provided. The protection cup includes a plurality of fractal elements disposed on an inner surface of the protection cup.

Claims (28)

1. A protection cup for a hearing protection device, comprising:

an outer surface;

an inner surface on an opposite side from the outer surface; and

a plurality of first fractal elements disposed on the inner surface, wherein each of the plurality of first fractal elements comprises a longitudinal segment and at least one transverse segment forming an H-shaped fractal element.

2. The protection cup for the hearing protection device according to claim 1 , further comprising a plurality of second fractal elements and a plurality of third fractal elements protruding from the inner surface of the protection cup.

3. The protection cup for the hearing protection device according to claim 2 , wherein the plurality of second fractal elements are longitudinal fractal elements and the plurality of third fractal elements are transverse fractal elements, wherein the transverse fractal elements are positioned perpendicular to the longitudinal fractal elements.

4. The protection cup for the hearing protection device according to claim 3 , wherein the plurality of second fractal elements and the plurality of third fractal elements form a plurality of regions on the inner surface.

5. The protection cup for the hearing protection device according to claim 1 , wherein two or more of the plurality of first fractal elements are connected through longitudinal segments of the two or more of the plurality of first fractal elements.

6. The protection cup for the hearing protection device according to claim 1 , wherein each of the plurality of first fractal elements further comprise a plurality of leg segments, wherein the plurality of leg segments is disposed at end points of the at least one transverse segment.

7. The protection cup for the hearing protection device according to claim 1 , wherein the plurality of first fractal elements is molded on the inner surface of the protection cup.

8. The protection cup for the hearing protection device according to claim 1 , wherein the plurality of first fractal elements is of the same size.

9. The protection cup for the hearing protection device according to claim 1 , wherein the inner surface of the protection cup comprises a protruding portion.

10. The protection cup for the hearing protection device according to claim 1 , wherein the plurality of first fractal elements further comprises a plurality of corner fractal elements.

11. A method for manufacturing a protection cup for a hearing protection device comprising:

molding an outer surface;

molding an inner surface on an opposite side from the outer surface; and

molding a plurality of first fractal elements on the inner surface, wherein the plurality of first fractal elements comprises a longitudinal segment and at least one transverse segment forming an H-shaped fractal element.

12. The method for manufacturing the protection cup for the hearing protection device according to claim 11 further comprising:

molding a plurality of second fractal elements protruding from the inner surface of the protection cup; and

molding a plurality of third fractal elements protruding from the inner surface of the protection cup.

13. The method for manufacturing the protection cup for the hearing protection device according to claim 12 , wherein the plurality of second fractal elements are longitudinal fractal elements and the plurality of third fractal elements are transverse fractal elements, wherein the transverse fractal elements arc positioned perpendicular to the longitudinal fractal elements.

14. The method for manufacturing the protection cup for the hearing protection device according to claim 12 , wherein the plurality of second fractal elements and the plurality of third fractal elements form a plurality of regions on the inner surface.

15. The method for manufacturing the protection cup for the hearing protection device according to claim 11 , wherein two or more of the plurality of first fractal elements are connected through longitudinal segments of the two or more of the plurality of first fractal elements.

16. The method for manufacturing the protection cup for the hearing protection device according to claim 11 , wherein each of the plurality of first fractal elements further comprises a plurality of leg segments, wherein the plurality of leg segments is molded at end points of the at least one transverse segment.

17. The method for manufacturing the protection cup for the hearing protection device according to claim 11 , wherein the plurality of first fractal elements is of the same size.

18. The method for manufacturing the protection cup for the hearing protection device according to claim 11 further comprising forming a protruding portion on the inner surface of the protection cup.

19. The method for manufacturing the protection cup for the hearing protection device according to claim 18 further comprising molding the plurality of first fractal elements on the protruding portion of the inner surface of the protection cup.

20. The method for manufacturing the protection cup for the hearing protection device according to claim 11 , wherein molding the plurality of first fractal elements on the inner surface further comprises adjusting the plurality of first fractal elements based on attenuation ratings.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 17, 2025
From: HONEYWELL INTERNATIONAL INC.
To: HONEYWELL SAFETY PRODUCTS USA, INC.
Reel/Frame 070538/0643 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 3, 2024
From: JENKINS, JOHN; HUTT, SCOTT; SUN, WEI; CHEN, YONGJUN; JIANG, LEI
To: HONEYWELL INTERNATIONAL INC.
Reel/Frame 067603/0628 →
Continuity (3)
Continuation 17309879
Provisional Application 62786810 · Dec 31, 2018
Related Publication 20240315879A1 · Sep 26, 2024
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