US3714830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water sampling device
Assignee: United States Department of the Navy
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Filing: 1971-03-26
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Granted: 1973-02-06
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Expires: 1991-03-26
Abstract
Abstract A water sampling device capable of carrying a conventional laboratory-type flask container having a neck opening and a bottom opening with means for closing each of said openings to capture a water sample therein at a preselected water depth whereby the contamination problems of transferring the water sample to another container for laboratory analysis are avoided.
Inventors
- 👤 R Keir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:54
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/02; G01N1/10; G01N1/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
152 words
A water sampling device for lowering in a body of water comprising: a conventional laboratory-type transparent container having an opening in a neck portion and an opening in the base portion thereof; a closure member for each of the neck and base openings; separate resilient means for biasing each of said closure members to a closed position to block its respective opening; releasable restraining means for each of said resilient means; said restraining means maintaining each of said closure members to an open position to enable passage of the water through the container as it is being lowered in said body of water and operable to simultaneously release bOth closure members; whereby release of said restraining means will enable the closure members to block their respective openings by the action of its resilient means to trap a sample of water in the container at a predetermined level in the body of water.
Claim 2
Dependent Claim
152 words
A water sampling device for lowering in a body of water comprising: a conventional laboratory-type transparent container having an opening in a neck portion and an opening in the base portion thereof; a closure member for each of the neck and base openings; separate resilient means for biasing each of said closure members to a closed position to block its respective opening; releasable restraining means for each of said resilient means; said restraining means maintaining each of said closure members to an open position to enable passage of the water through the container as it is being lowered in said body of water and operable to simultaneously release bOth closure members; whereby release of said restraining means will enable the closure members to block their respective openings by the action of its resilient means to trap a sample of water in the container at a predetermined level in the body of water.
Claim 3
Dependent Claim
152 words
A water sampling device for lowering in a body of water comprising: a conventional laboratory-type transparent container having an opening in a neck portion and an opening in the base portion thereof; a closure member for each of the neck and base openings; separate resilient means for biasing each of said closure members to a closed position to block its respective opening; releasable restraining means for each of said resilient means; said restraining means maintaining each of said closure members to an open position to enable passage of the water through the container as it is being lowered in said body of water and operable to simultaneously release bOth closure members; whereby release of said restraining means will enable the closure members to block their respective openings by the action of its resilient means to trap a sample of water in the container at a predetermined level in the body of water.
Claim 4
Dependent Claim
152 words
A water sampling device for lowering in a body of water comprising: a conventional laboratory-type transparent container having an opening in a neck portion and an opening in the base portion thereof; a closure member for each of the neck and base openings; separate resilient means for biasing each of said closure members to a closed position to block its respective opening; releasable restraining means for each of said resilient means; said restraining means maintaining each of said closure members to an open position to enable passage of the water through the container as it is being lowered in said body of water and operable to simultaneously release bOth closure members; whereby release of said restraining means will enable the closure members to block their respective openings by the action of its resilient means to trap a sample of water in the container at a predetermined level in the body of water.
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) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |