US3713779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable comparison detector kit
Assignee: Individual
•
Filing: 1970-12-07
•
Granted: 1973-01-30
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Expires: 1990-12-07
Abstract
Abstract A sealed flexible plastic package contains ampuls of chemicals which are broken to release the contents and pass them through canals to a mixing pocket which contains a substance to be tested. The chemicals create a mixture having a certain characteristic color in the presence of an ingredient for which the test is conducted. For more accurate detection a small quantity of the mixture is passed into a smaller pocket preferably having a light colored bottom surface, and a color patch is placed near the smaller pocket for visual comparison with the color of the mixture.
Inventors
- 👤 J Sirago
- 👤 E Walton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:24
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/50; B01L3/502; Y; Y10; Y10S; Y10S436/00; Y10S436/901
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
196 words
A detector kit for identification of the presence of chemicals in solution by visual color comparison comprising matching sheets of flexible and initially deformable material and at least one ampul containing a liquid chemical of predetermined volume, said ampul having opposite end chambers and a frangible section intermediate said end chambers, one of said sheets having therein a retention recess of shape and size accommodating said ampul, there being an area of said sheet adjacent said recess, means laterially spaced from said recess forming a mixing pocket in said area having a port thereto from the exterior for introduction of sample material to be tested, a first canal means respectively interconnecting one portion of said recess with said pocket, said pocket having a volume in excess of the volume of the contents of said ampul, a secondary pocket smaller than the mixing pocket, a second canal means interconnecting said mixing pocket and another portion of said secondary pocket, one of said canal means comprising a supply conduit to the pocket and the other of said canal means comprising a vent conduit therefrom, and a color comparison patch on one of said sheets adjacent said secondary pocket.
Claim 2
Dependent Claim
196 words
A detector kit for identification of the presence of chemicals in solution by visual color comparison comprising matching sheets of flexible and initially deformable material and at least one ampul containing a liquid chemical of predetermined volume, said ampul having opposite end chambers and a frangible section intermediate said end chambers, one of said sheets having therein a retention recess of shape and size accommodating said ampul, there being an area of said sheet adjacent said recess, means laterially spaced from said recess forming a mixing pocket in said area having a port thereto from the exterior for introduction of sample material to be tested, a first canal means respectively interconnecting one portion of said recess with said pocket, said pocket having a volume in excess of the volume of the contents of said ampul, a secondary pocket smaller than the mixing pocket, a second canal means interconnecting said mixing pocket and another portion of said secondary pocket, one of said canal means comprising a supply conduit to the pocket and the other of said canal means comprising a vent conduit therefrom, and a color comparison patch on one of said sheets adjacent said secondary pocket.
Claim 3
Dependent Claim
33 words
A detector kit as in claim 1 wherein there is a plurality of parallel laterally spaced recesses for a plurality of ampuls and continuations of said canal means interconnecting all of said recesses.
Claim 4
Dependent Claim
26 words
A detector kit as in claim 2 wherein there are enlargements extending transversely around said recesses in line respectively with Each portion of said canal means.
Claim 5
Dependent Claim
29 words
A detector kit according to claim 1 wherein said secondary pocket is spaced from said mixing pocket and there are separate portions of said canal means interconnecting said pockets.
Claim 6
Dependent Claim
55 words
A detector kit according to claim 2 wherein said canal means comprises two lines of depressions in the sheet of material containing said recesses forming said canals, one of said lines being for supplying fluid respectively to the mixing pocket and to the secondary pocket, the other of said lines of canals being for venting.
Claim 7
Dependent Claim
23 words
A detector kit according to claim 1 wherein there is a substantially opaque light colored surface at the bottom of said secondary pocket.
Claim 8
Dependent Claim
25 words
A detector kit according to claim 1 wherein there are three recesses in laterally spaced parallel relationship on one side only of the mixing pocket.
Claim 9
Dependent Claim
21 words
A detector kit according to claim 1 wherein portions of said kit forming said recesses are in both of said sheets.
References Cited (Backward Citations)
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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) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |