US4683761A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clean box
Assignee: ENVOTECH Corp
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Filing: 1986-05-01
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Granted: 1987-08-04
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Expires: 2006-05-01
Abstract
Abstract A portable apparatus and method for collecting and testing ground water samples including a container (12) defining a chamber (14) in which a control atmosphere is established. A valve means (22) is included which is capable of bypassing water away from the chamber (14) and continuously admitting water samples to the chamber (14). A preferred method of collecting a ground water sample includes the steps of establishing a controlled atmosphere in the chamber (14), directing the flow of water into the chamber (14), collecting the water sample inside the chamber (14), and testing the sample inside the chamber (14) to prevent contamination from the air on the exterior of the chamber (14).
Inventors
- 👤 James H. Stock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:39
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/02; G01N1/10; G01N1/14; G01N2001/1031; G01N1/20; G01N1/2035; G01N2001/2071
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
145 words
A portable sampling assembly (10) for connection to a ground water pump to collect and test ground water samples, said assembly comprising; a container (12) defining a chamber (14) for containing a controlled gaseous medium, handling means to manipulate items within said chamber (14) and preventing contamination of the gaseous medium within said chamber (14) by contaminates from the exterior thereof, a gas inlet (18) and a gas outlet (20) through said container (12) for regulating the flow of the gaseous medium into and out of said chamber (14), said assembly (10) characterized by including valve means (22) having a first position for bypassing a sample of water from the pump away from said chamber (14) to ensure that a collected sample is free of pumping system contaminates and a second position allowing for continuous flow of the sample of water into said chamber (14).
Claim 2
Dependent Claim
145 words
A portable sampling assembly (10) for connection to a ground water pump to collect and test ground water samples, said assembly comprising; a container (12) defining a chamber (14) for containing a controlled gaseous medium, handling means to manipulate items within said chamber (14) and preventing contamination of the gaseous medium within said chamber (14) by contaminates from the exterior thereof, a gas inlet (18) and a gas outlet (20) through said container (12) for regulating the flow of the gaseous medium into and out of said chamber (14), said assembly (10) characterized by including valve means (22) having a first position for bypassing a sample of water from the pump away from said chamber (14) to ensure that a collected sample is free of pumping system contaminates and a second position allowing for continuous flow of the sample of water into said chamber (14).
Claim 3
Dependent Claim
31 words
An assembly as set forth in claim 1 further characterized by said valve means (22) including a body (24) with a plurality of channels therethrough for allowing water to flow therethrough.
Claim 4
Dependent Claim
28 words
An assembly as set forth in claim 2 further characterized by a first (26) of said channels defining a bypass for directing water away from said chamber (14).
Claim 5
Dependent Claim
33 words
An assembly as set forth in claim 3 further characterized by a second (28) of said channels defining a water outlet to said chamber (14) for continuous water flow into said chamber (14).
Claim 6
Dependent Claim
31 words
An assembly as set forth in claim 4 further characterized by a third (30) of said channels defining a water inlet to said valve means (22) for providing water to same.
Claim 7
Dependent Claim
46 words
An assembly as set forth in claim 5 further characterized by said valve means (22) including a selector knob (32) for directing the flow of water from said third channel (30) to one of said first and second channels (26, 28) through said valve body (24).
Claim 8
Dependent Claim
25 words
An assembly as set forth in claim 6 further characterized by said container (12) including a plurality of walls (34) hermetically sealing said chamber (14).
Claim 9
Dependent Claim
36 words
An assembly as set forth in claim 7 further characterized by said valve means (22) attached to the outside of one of said walls (34) and having said selector knob (32) disposed within said chamber (14).
Claim 10
Dependent Claim
35 words
An assembly as set forth in claim 8 furhter characterized by one of said walls (34) including a water inley to said chamber comprising an inlet hole (38) therethrough for allowing water to flow therethrough.
Claim 11
Dependent Claim
31 words
An assembly as set forth in claim 9 further characterized by including a conduit (40) between said second channel (28) and said water inlet defining a passageway for water flow therebetween.
Claim 12
Dependent Claim
25 words
An assembly as set forth in claim 10 further characterized by one of said walls (34) including said gas inlet comprising a hole (18) therethrough.
Claim 13
Dependent Claim
45 words
An assembly as set forth in claim 11 further characterized by said gas inlet having a conduit (42) attached to said hole (18) with a manually activated gas inlet valve (44) connected thereto for manually regulating the amount of gas flow into said chamber (14).
Claim 14
Dependent Claim
32 words
An assembly as set forth in claim 12 further characterized by one of said walls (34) including said gas outlet comprising a hole (20) therethrough for releasing gas from said chamber (14).
Claim 15
Dependent Claim
44 words
An assembly as set forth in claim 13 further characterized by said gas outlet having a conduit (46) attached to said hole (20) with a manually activated gas outlet valve (48) connected thereto for manually regulating the flow of gas from said chamber (14).
Claim 16
Dependent Claim
27 words
An assembly as set forth in claim 14 further characterized by at least one of said walls (34) being transparent for seeing articles within said chamber (14).
Claim 17
Dependent Claim
40 words
An assembly as set forth in claim 15 further characterized by said handling means comprising at least one rubber glove (16) attached to the periphery of an access opening (50) in one of said walls (34) of said chamber (14).
Claim 18
Dependent Claim
38 words
An assembly as set forth in claim 16 further characterized by including a reinforcing wall (36) mounted on one of said walls (34) for providing stability to mount said valve means (32) to one of said walls (34).
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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) | 1990-08-03 | 1991-02-02 | 1991-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-03 | 1995-02-02 | 1995-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-03 | 1999-02-02 | 1999-08-04 | $7700.00 | Window Closed / Lapsed |