US3860042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual valve snorkel
Assignee: OCEAN CURRENTS Inc A CORP OF FL
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Filing: 1973-06-04
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Granted: 1975-01-14
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Expires: 1993-06-04
Abstract
Abstract Disclosed is a snorkel assembly (underwater swimming aid) which has an inhalation check valve at the upper end of the elongated tube, the tube having a mouthpiece at its lower end. Adjacent the mouthpiece the assembly is provided with dual exhalation check valves. Air is inhaled by the swimmer through the upper check valve and exhaled through the lower check valves and rebreathing of exhaled carbon dioxide is thus avoided.
Inventors
- 👤 Thomas N Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:17
CPC Classifications
B; B63; B63C; B63C11/00; B63C11/02; B63C11/18; B63C11/20; B63C11/205
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A snorkel-type swimming aid comprising an elongated tube, a hollow T-shaped fitting removably secured to and communicating with one end of said tube, a mouthpiece member secured to and extending sidewardly from that leg of said T-fitting to which said tube is secured and communicating with the interior thereof, inhalation valve means removably secured to the other end of said tube permitting air to be drawn into the tube but not expelled therefrom, exhalation valve means disposed at the opposed ends of the other two legs of said T-fitting, said exhalation valve means permitting air to be expelled from said fitting but preventing water flow into said fitting when air is drawn into said tube through said inhalation valve means.
Claim 2
Dependent Claim
120 words
A snorkel-type swimming aid comprising an elongated tube, a hollow T-shaped fitting removably secured to and communicating with one end of said tube, a mouthpiece member secured to and extending sidewardly from that leg of said T-fitting to which said tube is secured and communicating with the interior thereof, inhalation valve means removably secured to the other end of said tube permitting air to be drawn into the tube but not expelled therefrom, exhalation valve means disposed at the opposed ends of the other two legs of said T-fitting, said exhalation valve means permitting air to be expelled from said fitting but preventing water flow into said fitting when air is drawn into said tube through said inhalation valve means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-13 | 1978-07-15 | 1979-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-13 | 1982-07-15 | 1983-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-13 | 1986-07-15 | 1987-01-14 | $7700.00 | Window Closed / Lapsed |