Patent US4398533A successfully refreshed from Google Patents.
US4398533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drinking device for divers
Assignee: Individual
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Filing: 1981-05-04
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Granted: 1983-08-16
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Expires: 2001-05-04
Abstract
Abstract A drinking device for underwater divers enables divers to drink while engaged in diving to provide moisture in the mouth and lungs. The device includes a container with a chamber for holding liquid and a passage leading to the chamber. A valve opens and closes the passage. The container has a pressure compensator for equalizing pressure in the chamber with exterior hydrostatic pressure. In the method, liquid is placed in the chamber. The diver provides suction on the end of the tube to draw liquid past the valve, then closes the valve. This displaces air from the container for diving.
Inventors
- 👤 Randall R. Barker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:06
CPC Classifications
B; B63; B63C; B63C11/00; B63C11/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
114 words
A method of providing liquid for drinking while engaged in underwater diving, comprising: providing a container with a chamber for holding liquid, a passage leading to the chamber with a mouthpiece at an entrance to the passage, and valve means located near the entrance for opening and closing the passage to the chamber; providing the container with pressure compensator means for equalizing pressure in the chamber with exterior hydrostatic pressure; placing a liquid into the chamber; then providing a lower pressure at the mouthpiece than in the chamber to draw liquid into the passage and past the valve means; then closing the valve means while maintaining the lower pressure and submerging with the container.
Claim 2
Independent Claim
114 words
A method of providing liquid for drinking while engaged in underwater diving, comprising: providing a container with a chamber for holding liquid, a passage leading to the chamber with a mouthpiece at an entrance to the passage, and valve means located near the entrance for opening and closing the passage to the chamber; providing the container with pressure compensator means for equalizing pressure in the chamber with exterior hydrostatic pressure; placing a liquid into the chamber; then providing a lower pressure at the mouthpiece than in the chamber to draw liquid into the passage and past the valve means; then closing the valve means while maintaining the lower pressure and submerging with the container.
Claim 3
Dependent Claim
24 words
The method according to claim 1 wherein the step of providing the container with pressure compensating means comprises providing the chamber with flexible walls.
Claim 4
Independent Claim
89 words
A method of providing liquid for drinking while engaged in underwater diving, comprising: providing a flexible container with a mouth; filling the container with liquid; securing a first end of a tube to the mouth, the tube having a second end with a valve near the second end for opening and closing the tube; then opening the valve and sucking on the second end of the tube to draw liquid past the valve; then closing the valve while maintaining suction; and releasing the suction and submerging with the container.
Claim 5
Independent Claim
89 words
A method of providing liquid for drinking while engaged in underwater diving, comprising: providing a flexible container with a mouth; filling the container with liquid; securing a first end of a tube to the mouth, the tube having a second end with a valve near the second end for opening and closing the tube; then opening the valve and sucking on the second end of the tube to draw liquid past the valve; then closing the valve while maintaining suction; and releasing the suction and submerging with the container.
Claim 6
Dependent Claim
31 words
The method according to claim 3, further comprising the step of placing check valve means in the device for allowing flow of liquid from the container but not into the container.
Claim 7
Dependent Claim
46 words
The method according to claim 3 further comprising the step of, prior to drinking while submerged, blowing into the second end of the tube and prior to opening the valve to free the tube between the second end and the valve of water from the environment.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-15 | 1987-02-14 | 1987-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-15 | 1991-02-14 | 1991-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-15 | 1995-02-14 | 1995-08-16 | $7700.00 | Window Closed / Lapsed |