Patent US3600447A successfully refreshed from Google Patents.
Patent US5230368A successfully refreshed from Google Patents.
US5230368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical intake system
Assignee: First Union National Bank of North Carolina
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Filing: 1992-08-18
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Granted: 1993-07-27
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Expires: 2012-08-18
Abstract
Abstract A chemical intake system has an aperture plate with apertures of varying fluid flow resistance all connected to a first fluid source. A first tube is connected to one of the apertures in the aperture plate and to a suction tube. A second tube is connected to a second fluid source and to the suction tube. The amount of the first fluid flowing into the suction tube is regulated by attaching the first tube to various apertures in the plate. The amount of fluid flowing through the first tube also regulates the amount of the second fluid flowing through the second tube and into the suction tube.
Inventors
- 👤 Robert C. Berfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:49
CPC Classifications
B; B08; B08B; B08B3/00; B08B3/02; B08B3/026; B05; B05B; B05B15/00; B05B7/00; B05B7/24; B05B7/2402; B05B7/244; B05B7/2443; B08B2203/00; B08B2203/02; B08B2203/0217; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87571; Y10T137/87587; Y10T137/87595; Y10T137/87619; Y10T137/87627
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
153 words
A chemical intake system capable of mixing a first fluid and a second fluid comprising: a first tube having a lumen; a second tube having a lumen wherein said second tube lumen, is adapted to communicate with a source of said second fluid; a third tube having a lumen adapted for connection to a source of suction wherein said first tube lumen and said second tube lumen are connected to said third tube lumen; and an aperture plate having at least two apertures therein, each aperture adapted to communicate with a source of the first fluid wherein each aperture has an effective fluid flow resistance associated therewith and the fluid flow resistances of the apertures are different and wherein a fitting is disposed adjacent each aperture, each fitting permitting releasable attachment of said first tube thereto so that said first tube lumen may be placed in fluid communication with said first fluid source.
Claim 2
Dependent Claim
153 words
A chemical intake system capable of mixing a first fluid and a second fluid comprising: a first tube having a lumen; a second tube having a lumen wherein said second tube lumen, is adapted to communicate with a source of said second fluid; a third tube having a lumen adapted for connection to a source of suction wherein said first tube lumen and said second tube lumen are connected to said third tube lumen; and an aperture plate having at least two apertures therein, each aperture adapted to communicate with a source of the first fluid wherein each aperture has an effective fluid flow resistance associated therewith and the fluid flow resistances of the apertures are different and wherein a fitting is disposed adjacent each aperture, each fitting permitting releasable attachment of said first tube thereto so that said first tube lumen may be placed in fluid communication with said first fluid source.
Claim 3
Dependent Claim
12 words
The system of claim 1 wherein said aperture plate includes four apertures.
Claim 4
Dependent Claim
31 words
The system of claim 1 wherein: said second fluid source comprises, a second fluid container and a second fluid container cap; and said aperture plate is formed integrally with said cap.
Claim 5
Dependent Claim
21 words
The system of claim 1 wherein each aperture has a minimum diameter and the minimum diameters of each aperture are different.
Claim 6
Dependent Claim
27 words
The system of claim 1 further comprising a storage fitting configured to prevent the flow of fluid when said first tube is attached to said storage fitting.
Claim 7
Dependent Claim
27 words
The system of claim 1 further comprising a storage fitting configured to prevent the flow of fluid when said third tube is attached to said storage fitting.
Claim 8
Dependent Claim
18 words
The system of claim 5 wherein said storage fitting is located on a container of said second fluid.
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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) | 1996-07-26 | 1997-01-25 | 1997-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-26 | 2001-01-25 | 2001-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-26 | 2005-01-25 | 2005-07-27 | $7700.00 | Window Closed / Lapsed |