Patent US3077290A successfully refreshed from Google Patents.
Patent US3876378A successfully refreshed from Google Patents.
US3876378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Analytic device utilizing a reaction-sensitive chemical product
Assignee: Analytab Products Inc
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Filing: 1973-04-27
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Granted: 1975-04-08
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Expires: 1993-04-27
Abstract
Abstract An analytic device of the type utilizing a chemical product, such as an indicating reagent which undergoes a color change, sensitive to a condition being analyzed. The device includes a generally tubular, upright vessel open at its upper end and having a closed lower end. A flange extending around the interior of the vessel closely above its lower end defines a groove about the lower interior region of the vessel. An annular disc of absorbent material impregnated with the chemical product rests against the lower end of the vessel with its outer peripheral edge snugly received within the groove so that the disc is prevented from displacement. A central opening may be provided within the disc to permit trapped air to escape when test liquid is added to the vessel.
Inventors
- 👤 Paul A F Montagnon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:24
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/50; B01L3/508
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
105 words
AN ANALYSIS VESSEL FOR HOLDING FAST THEREIN A MEMBER IMPREGNATED WITH AREAGENT FOR ANALYZING A SUBSTANCE IN A LIQUID TO BE PLACED IN SAID VESSEL COMPRISING: A. A TUBULAR ENCLOSURE, PROTRUDING INWARDLY FROM BOTTOM; B. MEANS WITHIN SAID ENCLOSURE, PROTRUDING INWARDLY FROM SAID SIDE WALLS AND IN SPACED PARALLEL RELATION ABOVE SAID BOTTOM, FOR DEFINING A GROVE ADJACENT SAID BOTTOM EXTENDING ABOUT AT LEAST A PORTION OF THE PERIPHERY OF SAID ENCLOSURE, SAID GROOVE FACING AND COMMUNICATING WITH THE REMAINDER OF THE INTERIOR OF SAID ENCLOSURE, WHEREBY THE IMPREGNATED MEMBER MAY BE AT LEAST PARTIALLY ENGAGED IN SAID GROOVE AND THEREBY ANCHORED WITHIN SAID ENCLOSURE.
Claim 2
Dependent Claim
105 words
AN ANALYSIS VESSEL FOR HOLDING FAST THEREIN A MEMBER IMPREGNATED WITH AREAGENT FOR ANALYZING A SUBSTANCE IN A LIQUID TO BE PLACED IN SAID VESSEL COMPRISING: A. A TUBULAR ENCLOSURE, PROTRUDING INWARDLY FROM BOTTOM; B. MEANS WITHIN SAID ENCLOSURE, PROTRUDING INWARDLY FROM SAID SIDE WALLS AND IN SPACED PARALLEL RELATION ABOVE SAID BOTTOM, FOR DEFINING A GROVE ADJACENT SAID BOTTOM EXTENDING ABOUT AT LEAST A PORTION OF THE PERIPHERY OF SAID ENCLOSURE, SAID GROOVE FACING AND COMMUNICATING WITH THE REMAINDER OF THE INTERIOR OF SAID ENCLOSURE, WHEREBY THE IMPREGNATED MEMBER MAY BE AT LEAST PARTIALLY ENGAGED IN SAID GROOVE AND THEREBY ANCHORED WITHIN SAID ENCLOSURE.
Claim 3
Dependent Claim
45 words
The vessel of claim 1, further comprising: a. said tubular enclosure having a substantially circular cross-section b. said groove being of annular configuration and extending about the entire periphery of said enclosure for receiving and engaging therein the outer periphery of a disc-shaped impregnated member.
Claim 4
Dependent Claim
101 words
The analysis vessel of claim 1 further comprising: a. said bottom of said enclosure being a member distinct from said side walls, said bottom member being dished downwardly over its central portion, defining a relieved portion therein, and b. said means for defining a groove comprising a substantially flat flange member sandwiched between said side walls and said bottom member, said flange member having an aperture in its central region over a portion of said relieved portion of said bottom member forming a flange extending inwardly from about the periphery of said side walls over a portion of said bottom member.
Claim 5
Dependent Claim
80 words
The analysis vessel of claim 1 further comprising: a. said bottom of said enclosure being a substantially flat member distinct from said side walls, and b. said means for defining said groove comprising a flange member sandwiched between said side walls and said bottom member, said flange member being relieved upwardly over its central portion defining with said bottom member a groove about the bottom interior of said enclosure, said flange member also having an aperture in its central region.
Claim 6
Dependent Claim
56 words
The analysis vessel of claim 1, further comprising: said means for defining a groove comprising a liner having a configuration substantially corresponding to that of said enclosure and being nestable within said enclosure in a position allowing spacing between the bottoms of said enclosure and said liner, said liner additionally having an aperture in its bottom,
Claim 7
Dependent Claim
116 words
An analytic device utilizing a chemical product for analyzing a substance in a liquid to be placed in said device, the device comprising: a. a generally tubular vessel having side walls and a bottom; b. means within said vessel and protruding inwardly from said side walls for defining a groove extending about at least a portion of the periphery of said vessel adjacent said bottom thereof; and c. a disc of absorbent material impregnated with the chemical product, said disc being disposed within the vessel and resting against said bottom of said vessel with an outer peripheral edge of said disc snugly received within said groove thereby anchoring said disc against displacement relative to said vessel.
Claim 8
Dependent Claim
116 words
An analytic device utilizing a chemical product for analyzing a substance in a liquid to be placed in said device, the device comprising: a. a generally tubular vessel having side walls and a bottom; b. means within said vessel and protruding inwardly from said side walls for defining a groove extending about at least a portion of the periphery of said vessel adjacent said bottom thereof; and c. a disc of absorbent material impregnated with the chemical product, said disc being disposed within the vessel and resting against said bottom of said vessel with an outer peripheral edge of said disc snugly received within said groove thereby anchoring said disc against displacement relative to said vessel.
Claim 9
Dependent Claim
20 words
An analytic device as defined in claim 6 wherein said disc further includes a central opening extending through said disc.
Claim 10
Dependent Claim
59 words
An analytic device according to claim 6 wherein the means defining the groove being a flange forming an opening adjacent the center portion of the vessel and the disc of absorbent material having an aperture therein underlying the opening of the flange and providing a cavity within which the liquid with the substance to be analyzed can be viewed.
Claim 11
Dependent Claim
93 words
An analysis vessel for holding fast therein a portion of material including a reagent for analyzing a substance in a liquid to be placed in said vessel comprising: a. a tubular enclosure having side walls, an open top and a bottom; b. means within said enclosure protruding inwardly from said side walls and in spaced parallel relation above said bottom, for defining a groove adjacent said bottom extending about at least a portion of the periphery of said enclosure, said groove facing and communicating with the remainder of the interior of said enclosure,
Claim 12
Dependent Claim
93 words
An analysis vessel for holding fast therein a portion of material including a reagent for analyzing a substance in a liquid to be placed in said vessel comprising: a. a tubular enclosure having side walls, an open top and a bottom; b. means within said enclosure protruding inwardly from said side walls and in spaced parallel relation above said bottom, for defining a groove adjacent said bottom extending about at least a portion of the periphery of said enclosure, said groove facing and communicating with the remainder of the interior of said enclosure,
Claim 13
Dependent Claim
120 words
An analytic device utilizing a chemical product for analyzing a substance in a liquid to be placed in said device, the device comprising: a. a generally tubular vessel open at its upper end and having slide walls and a bottom; b. means within said vessel and protruding inwardly from said side walls for defining a groove extending about at least a portion of the periphery of said vessel adjacent said bottom thereof; and c. a disc of material including the chemical product, said disc being disposed within the vessel and resting against said bottom of said vessel with an outer peripheral edge of said disc snugly received within said groove thereby anchoring said disc against displacement relative to said vessel.
Claim 14
Dependent Claim
120 words
An analytic device utilizing a chemical product for analyzing a substance in a liquid to be placed in said device, the device comprising: a. a generally tubular vessel open at its upper end and having slide walls and a bottom; b. means within said vessel and protruding inwardly from said side walls for defining a groove extending about at least a portion of the periphery of said vessel adjacent said bottom thereof; and c. a disc of material including the chemical product, said disc being disposed within the vessel and resting against said bottom of said vessel with an outer peripheral edge of said disc snugly received within said groove thereby anchoring said disc against displacement relative to said vessel.
References Cited (Backward Citations)
US3689224A
Cited
US3476515A
Cited
US3477821A
Cited
US3582283A
Cited
US3768974A
Cited
US3740196A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |