US4061140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underwater breathing device
Assignee: Individual
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Filing: 1976-05-05
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Granted: 1977-12-06
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Expires: 1996-05-05
Abstract
Abstract An underwater breathing device substantially differing from known submerging apparatuses heavily armored and applicable for deep sea exploration. This invention device is characterized by structural simplicity and ease of operation. The device comprises a float, tubular members and a mask integrally united so as to enable a user to swim submerged close to the water surface while breathing air in and out directly to and from the atmosphere via said mask and said tubular members.
Inventors
- 👤 Masayasu Saito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:28
CPC Classifications
B; B63; B63C; B63C11/00; B63C11/02; B63C11/18; B63C11/20; B63C11/205; B63C11/207
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
244 words
An underwater breathing device comprising: a float means for floating on the surface of water; a hollow tubular T-shaped mouthpiece having a central hollow vertical member and two hollow lateral cross-members joined to said vertical member on opposite sides thereof; first and second tubes, each tube being inserted into and slightly projecting outwardly from one of said lateral cross-members, said tubes fitting into said cross-members in a water-tight relationship; first check valve means in said first tube for opening toward said central vertical member only when air is inhaled through said vertical member; second check valve means in said second tube for opening away from said central vertical member only when air is exhaled into said vertical member, whereby only one of said first and second valve means is open at one time; a first flexible hose fitted into said first tube and extending therefrom; a second flexible hose fitted into said second tube and extending therefrom; first and second upright pipes connected to said float means and projecting thereabove, said pipes having a vertical portion and an angled portion at the lower end thereof, said lower angled portion of said first and second upright pipes being connected to said first and second flexible hoses respectively at the end of each hose opposite the end fitted into said tube; and umbrella type cover means fitted into said vertical portion of said first and second upright pipes for preventing water from entering into said pipes.
Claim 2
Dependent Claim
244 words
An underwater breathing device comprising: a float means for floating on the surface of water; a hollow tubular T-shaped mouthpiece having a central hollow vertical member and two hollow lateral cross-members joined to said vertical member on opposite sides thereof; first and second tubes, each tube being inserted into and slightly projecting outwardly from one of said lateral cross-members, said tubes fitting into said cross-members in a water-tight relationship; first check valve means in said first tube for opening toward said central vertical member only when air is inhaled through said vertical member; second check valve means in said second tube for opening away from said central vertical member only when air is exhaled into said vertical member, whereby only one of said first and second valve means is open at one time; a first flexible hose fitted into said first tube and extending therefrom; a second flexible hose fitted into said second tube and extending therefrom; first and second upright pipes connected to said float means and projecting thereabove, said pipes having a vertical portion and an angled portion at the lower end thereof, said lower angled portion of said first and second upright pipes being connected to said first and second flexible hoses respectively at the end of each hose opposite the end fitted into said tube; and umbrella type cover means fitted into said vertical portion of said first and second upright pipes for preventing water from entering into said pipes.
References Cited (Backward Citations)
US156599A
Cited
US2865369A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-05 | 1981-06-06 | 1981-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-05 | 1985-06-06 | 1985-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-05 | 1989-06-06 | 1989-12-06 | $7700.00 | Window Closed / Lapsed |