US3828887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underwater speaking device
Assignee: Individual
•
Filing: 1969-09-10
•
Granted: 1974-08-13
•
Expires: 1989-09-10
Abstract
Abstract An underwater speaking tube employs a free-flooding speaking section which fits over the speaker''s mouth. A venting tube to expel water is separated by a sound-transferring diaphragm from a sound distribution section.
Inventors
- 👤 D Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:17
CPC Classifications
H; H04; H04B; H04B11/00; B; B63; B63C; B63C11/00; B63C11/02; B63C11/26; G; G01; G01S; G01S1/00; G01S1/72
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
102 words
A device for underwater sound projection from the mouth of a speaker, comprising free-flooding speaking and sound projecting sections, said sections being separated from each other by a sound-permeable diaphragm, venting means in said speaking section, and a mouth seal having an opening therein sized to surround the mouth of the speaker to prevent water leakage from the outwide to said speaking section in use, whereby the speaker may blow into and thus displace water from said speaking section by way of a said venting means and project his voice in speaking resonance against said sound-permeable diaphragm outwardly through said sound-projection section.
Claim 2
Independent Claim
102 words
A device for underwater sound projection from the mouth of a speaker, comprising free-flooding speaking and sound projecting sections, said sections being separated from each other by a sound-permeable diaphragm, venting means in said speaking section, and a mouth seal having an opening therein sized to surround the mouth of the speaker to prevent water leakage from the outwide to said speaking section in use, whereby the speaker may blow into and thus displace water from said speaking section by way of a said venting means and project his voice in speaking resonance against said sound-permeable diaphragm outwardly through said sound-projection section.
Claim 3
Dependent Claim
20 words
The device as defined in claim 1 wherein the said vent is controlled by a valve operable by the speaker.
Claim 4
Dependent Claim
38 words
The device as defined in claim 1 wherein said vent is an automatic check valve allowing outward displacement of water by the breath of the speaker, preventing water return through said vent while the device is in use.
Claim 5
Dependent Claim
20 words
The device as defined in claim 1 wherein the speaking section and the sound-projection section are manually separably secured together.
Claim 6
Dependent Claim
20 words
The device as defined in claim 1 wherein the speaking and the sound-projection sections are telescopically interfitted and secured together.
Claim 7
Dependent Claim
22 words
The device as defined in claim 1 having means for support of said device upon the mouth of the speaker in use.
Claim 8
Dependent Claim
30 words
The device as defined in claim 1 having lanyard means for support of said device about the person of the user underwater when the said device is not in use.
Claim 9
Dependent Claim
13 words
The device as defined in claim 1 having means for projecting light therefrom.
Claim 10
Dependent Claim
23 words
The device as defined in claim 1 having a compass means mounted upon said device for projecting the sound in a selected direction.
Claim 11
Dependent Claim
22 words
The device as defined in claim 1 wherein the diaphragm separating said speaking and sound-projection sections is reenforced by sound-permeable supporting discs.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |