US3713780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for chemical testing
Assignee: Becton Dickinson and Co
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Filing: 1971-02-01
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Granted: 1973-01-30
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Expires: 1991-02-01
Abstract
Abstract A reagent container having a series of tiered compartments containing prepackaged reagents for the chemical evaluation of a test sample. A frangible diaphragm seals each compartment from the succeeding compartment. A sample is introduced into the top compartment. After incubation a breaker punctures the seal of the adjacent compartment, allowing the reagents to mix and react. The procedure is repeated for each reagent filled compartment.
Inventors
- 👤 S Shapiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:08
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/50; B01L3/502
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
127 words
A unitary tiered reagent container adapted for the chemical evaluation of a material by the sequential addition of pre-packaged reagents thereto comprising: a plurality of tiered cylinders in abutting axial alignment and having a bottom cylinder of smallest diameter and each succeeding cylinder having a greater diameter than the preceding cylinder; each cylinder having a radially disposed annular shoulder means for sealingly mounting a frangible partition means dividing the cylinders into individual compartments. each of said partition means being supported on said shoulder means and frangible cover means enclosing the cylinder of greatest diameter and means permanently enclosing the end of the cylinder of smallest diameter whereby a tiered reagent container is formed adapted to house sequentially a reagent in each cylinder in tiered abutting axial alignment.
Claim 2
Dependent Claim
127 words
A unitary tiered reagent container adapted for the chemical evaluation of a material by the sequential addition of pre-packaged reagents thereto comprising: a plurality of tiered cylinders in abutting axial alignment and having a bottom cylinder of smallest diameter and each succeeding cylinder having a greater diameter than the preceding cylinder; each cylinder having a radially disposed annular shoulder means for sealingly mounting a frangible partition means dividing the cylinders into individual compartments. each of said partition means being supported on said shoulder means and frangible cover means enclosing the cylinder of greatest diameter and means permanently enclosing the end of the cylinder of smallest diameter whereby a tiered reagent container is formed adapted to house sequentially a reagent in each cylinder in tiered abutting axial alignment.
Claim 3
Dependent Claim
52 words
The invention in accordance with claim 1, wherein each compartment contains a predetermined quantity of a preselected reagent, whereby a sample may be introduced into the compartment sealed by the frangible cover means and sequentially exposed to the balance of the reagents in the container by sequentially puncturing the succeeding frangible partitions.
Claim 4
Dependent Claim
112 words
A unitary tiered container for chemically evaluating a test sample, having discreet compartments, each compartment having a predetermined amount of a preselected liquid reagent, comprising: a cylindrical hollow base receptacle permanently enclosed at one end; a plurality of hollow cylinders in integral, abutting axial alignment therewith, each successive cylinder having a greater diameter than the preceding; a continuously disposed annular shoulder joining the abutting ends of each successive cylinder; a plurality of frangible, inert, impermeable diaphragms dividing the cylinders into individual compartments, each of said diaphragms supported and adhesively affixed to an annular shoulder and one of said diaphragms overlying the cylinder of greatest diameter and forming a cover for the container.
Claim 5
Dependent Claim
112 words
A unitary tiered container for chemically evaluating a test sample, having discreet compartments, each compartment having a predetermined amount of a preselected liquid reagent, comprising: a cylindrical hollow base receptacle permanently enclosed at one end; a plurality of hollow cylinders in integral, abutting axial alignment therewith, each successive cylinder having a greater diameter than the preceding; a continuously disposed annular shoulder joining the abutting ends of each successive cylinder; a plurality of frangible, inert, impermeable diaphragms dividing the cylinders into individual compartments, each of said diaphragms supported and adhesively affixed to an annular shoulder and one of said diaphragms overlying the cylinder of greatest diameter and forming a cover for the container.
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) | 1976-01-30 | 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 |