US3701363A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scuba valve
Assignee: Individual
•
Filing: 1970-12-02
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Granted: 1972-10-31
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Expires: 1990-12-02
Abstract
Abstract The reliability of a reserve air supply for underwater diving can be greatly improved by using a rotary valve arrangement for releasing air through a parallel passage. The actuation of such a valve can also be made independent of the mechanism which detects the condition that the supply of air remaining in the tank is low.
Inventors
- 👤 Manfred Schuler
- 👤 Tatsumi Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:40
CPC Classifications
A; A62; A62B; A62B9/00; A62B9/02; B; B63; B63C; B63C11/00; B63C11/02; B63C11/18; B63C11/22; B63C11/2209; Y; Y10; Y10S; Y10S137/00; Y10S137/908; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87265; Y10T137/87523; Y10T137/87555
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
107 words
In a Scuba diving air reserve system of the type having a spring biased poppet valve for cutting off air to the regulator when the tank pressure falls below a predetermined value, the improvement which comprises: a bypass passage around said spring biased poppet valve; reserve valve means for opening said bypass passage; means for externally actuating said reserve valve means whereby a diver may obtain air after said poppet valve has closed to warn the diver that his air supply is low; and means for filling the air tank through said bypass passage whereby said tank may be charged independently of said spring biased poppet valve.
Claim 2
Dependent Claim
107 words
In a Scuba diving air reserve system of the type having a spring biased poppet valve for cutting off air to the regulator when the tank pressure falls below a predetermined value, the improvement which comprises: a bypass passage around said spring biased poppet valve; reserve valve means for opening said bypass passage; means for externally actuating said reserve valve means whereby a diver may obtain air after said poppet valve has closed to warn the diver that his air supply is low; and means for filling the air tank through said bypass passage whereby said tank may be charged independently of said spring biased poppet valve.
Claim 3
Dependent Claim
16 words
The reserve air system recited in claim 1 wherein said reserve valve is a rotary valve.
Claim 4
Dependent Claim
74 words
The reserve air system recited in claim 1 wherein said means for externally actuating said reserve valve comprises a lever arm attached to said rotary valve at right angles to the axis of rotation of said rotary valve; a reserve pull rod attached to said lever arm at a point displaced from the axis of rotation of said rotary valve whereby said rotary valve may be rotated by pulling on said reserve pull rod.
Claim 5
Dependent Claim
135 words
A Scuba diving valve comprising: a housing having a threaded neck adapted to screw into the accordant threads of a conventional Scuba tank, an opening for filling the tank, and a first air channel within said housing connecting said tank with the opening through which the tank is filled; a main valve for closing said first channel, said main valve being located between the tank and the filling opening; a spring biased poppet valve in said first channel, said poppet valve being located between said main valve and the tank; a second air channel within said housing for bypassing air around said poppet valve; a rotary valve for closing said second channel; means for opening said rotary valve and means for opening said main valve whereby the tank can be charged through said filling opening.
Claim 6
Dependent Claim
135 words
A Scuba diving valve comprising: a housing having a threaded neck adapted to screw into the accordant threads of a conventional Scuba tank, an opening for filling the tank, and a first air channel within said housing connecting said tank with the opening through which the tank is filled; a main valve for closing said first channel, said main valve being located between the tank and the filling opening; a spring biased poppet valve in said first channel, said poppet valve being located between said main valve and the tank; a second air channel within said housing for bypassing air around said poppet valve; a rotary valve for closing said second channel; means for opening said rotary valve and means for opening said main valve whereby the tank can be charged through said filling opening.
Claim 7
Dependent Claim
45 words
The apparatus recited in claim 4 wherein is included: means for attaching a regulator to the opening through which said tank is charged, and means for actuating said rotary valve to the open position when the tank is mounted on the back of a diver.
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) | 1975-10-31 | 1976-05-01 | 1976-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-31 | 1980-05-01 | 1980-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-31 | 1984-05-01 | 1984-10-31 | $7700.00 | Window Closed / Lapsed |