US4424880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustic device for a head protector
Assignee: Honda Motor Co Ltd
•
Filing: 1981-12-04
•
Granted: 1984-01-10
•
Expires: 2001-12-04
Abstract
Abstract An acoustic device which includes a sound generating element for generating sounds, a case member having an inner chamber for containing the sound generating element therein, and a sound conducting member extending from the case member for conducting the sounds generated in the inner chamber. In order to removably attach the acoustic device to a helmet, the acoustic device is provided with a holding member for holding the case member on the helmet. The sound conducting member is formed to extend from the case member to a location substantially corresponding to an ear of a wearer of the helmet.
Inventors
- 👤 Masato Murayama
- 👤 Mitsugi Akita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:36
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/10; H04R1/1058; H04R1/1075; A; A42; A42B; A42B3/00; A42B3/04; A42B3/30; H04M; H04M1/00; H04M1/02; H04M1/04; H04M1/05
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
111 words
An acoustic device for a head protector, comprising: a sound generating element for generating acoustic sounds; a case member having an inner chamber for containing at least a part of said sound generating element therein; a sound conducting member extending from said case member so as to conduct the acoustic sounds generated in said inner chamber; a holding member for holding said case member on said head protector; said sound conducting member being formed to extend from said case member held on said head protector to a location substantially corresponding to an ear of a wearer of said head protector; and said acoustic device being detachably mounted to said head protector.
Claim 2
Dependent Claim
111 words
An acoustic device for a head protector, comprising: a sound generating element for generating acoustic sounds; a case member having an inner chamber for containing at least a part of said sound generating element therein; a sound conducting member extending from said case member so as to conduct the acoustic sounds generated in said inner chamber; a holding member for holding said case member on said head protector; said sound conducting member being formed to extend from said case member held on said head protector to a location substantially corresponding to an ear of a wearer of said head protector; and said acoustic device being detachably mounted to said head protector.
Claim 3
Dependent Claim
19 words
An acoustic device for a head protector, according to claim 1, wherein said holding member comprises a clamp structure.
Claim 4
Dependent Claim
22 words
An acoustic device for a head protector according to claim 2, wherein said clamp structure is formed integrally with said case member.
Claim 5
Dependent Claim
26 words
An acoustic device for a head protector according to claim 1 or 2, wherein said holding member comprises a chin strap provided on said head protector.
Claim 6
Dependent Claim
22 words
An acoustic device for a head protector according to claim 4, wherein said case member is fixed relative to said chin strap.
Claim 7
Dependent Claim
22 words
An acoustic device for a head protector according to claim 4, wherein said case member is slidable relative to said chin strap.
Claim 8
Dependent Claim
36 words
An acoustic device for a head protector according to claim 1, wherein said sound conducting member is accommodated in a recessed groove formed in a cushioning element applied to the inner surface of said head protector.
Claim 9
Dependent Claim
31 words
An acoustic device for a head protector according to claim 1, wherein: said holding member is detachably connected to said head protector adjacent a lower border portion of said head protector.
Claim 10
Dependent Claim
72 words
An acoustic device for a head protector according to claim 8, wherein: said sound conducting member comprises a sound conducting tube having a lower end thereof connected to said case member; and said tube has an upper end thereof disposed in a position substantially corresponding to an ear of said wearer of said head protector, said upper end being provided with an opening for transmitting sound to the ear of said wearer.
References Cited (Backward Citations)
US3621488A
Cited
US4110583A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-01-09 | 1987-07-11 | 1988-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-09 | 1991-07-11 | 1992-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-09 | 1995-07-11 | 1996-01-10 | $7700.00 | Window Closed / Lapsed |