Patent US5501837A successfully refreshed from Google Patents.
US5501837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
One-step test device
Assignee: Individual
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Filing: 1995-06-30
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Granted: 1996-03-26
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Expires: 2015-06-30
Abstract
Abstract A testing device having a lower cup for receipt of a fluid specimen and a cover lid containing a strip chamber having one or more reagent strips disposed therein and having a test chamber for each of the reagent strips, such test chamber receiving the end portion of the reagent strip, with each of the reagent strips having a color change testing area along its length. The cover lid is attachable to the cup in fluid-tight relationship with the device to be inverted for the fluid specimen to reach the reagent strips in the test chambers and react therewith, and for the device to be set upright for the reading of the color change testing areas through windows in the cover lid above the color change test areas.
Inventors
- 👤 Philip W. Sayles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:50
CPC Classifications
B; B01; B01L; B01L9/00; B01L9/52; B01L3/00; B01L3/50; B01L3/502; G; G01; G01N; G01N21/00; G01N21/75; G01N21/77; G01N21/78; B01L2300/00; B01L2300/04; B01L2300/041; B01L2300/042; B01L2300/046; B01L2300/047; B01L2300/06; B01L2300/0627; B01L2300/0663; B01L2300/08; B01L2300/0809; B01L2300/0825; B01L3/5023
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
368 words
An improved test device having a testing mode, said device for receipt of a fluid specimen to be tested, said test device having a cup with a cover lid, said cover lid able to be attached to said cup in fluid-tight relationship, further comprising: at least one window defined in said cover lid, said cover lid having a central portion with a central portion aperture defined therein, a top, a bottom surface of said cover lid and a cover lid side wall; a strip chamber having a central portion, a bottom wall having a bottom wall aperture defined therein, and a strip chamber side wall, said strip chamber side wall disposed in contact with said bottom surface of said cover lid disposed interior to and spaced away from said cover lid side wall defining a space therebetween, said space between said strip chamber and said cover lid side wall defining a space for receipt of said cup; at least one test chamber having an interior, a bottom, a test chamber side wall and a test chamber aperture defined in said bottom of said test chamber, said test chamber positioned within said strip chamber and having a reagent strip receipt notch defined in said test chamber side wall; means to open and close said test chamber aperture; and at least one reagent strip having a length, a first end portion and a second end portion, said reagent strip having a color change testing area disposed along its length, said reagent strip being substantially disposed in said strip chamber, said second end portion extending through said reagent strip receipt notch in said test chamber and into said interior of said test chamber, said device in its testing mode with a fluid specimen contained within said cup and said cover lid attached thereto, to be inverted, causing said fluid to flow into said interior of said test chamber, when said test chamber aperture is open, and to come in contact with said second end portion of said reagent strip, said fluid being carried along said reagent strip to said color change testing area to create a test result which test result can be viewed through said window in said cover lid.
Claim 2
Dependent Claim
368 words
An improved test device having a testing mode, said device for receipt of a fluid specimen to be tested, said test device having a cup with a cover lid, said cover lid able to be attached to said cup in fluid-tight relationship, further comprising: at least one window defined in said cover lid, said cover lid having a central portion with a central portion aperture defined therein, a top, a bottom surface of said cover lid and a cover lid side wall; a strip chamber having a central portion, a bottom wall having a bottom wall aperture defined therein, and a strip chamber side wall, said strip chamber side wall disposed in contact with said bottom surface of said cover lid disposed interior to and spaced away from said cover lid side wall defining a space therebetween, said space between said strip chamber and said cover lid side wall defining a space for receipt of said cup; at least one test chamber having an interior, a bottom, a test chamber side wall and a test chamber aperture defined in said bottom of said test chamber, said test chamber positioned within said strip chamber and having a reagent strip receipt notch defined in said test chamber side wall; means to open and close said test chamber aperture; and at least one reagent strip having a length, a first end portion and a second end portion, said reagent strip having a color change testing area disposed along its length, said reagent strip being substantially disposed in said strip chamber, said second end portion extending through said reagent strip receipt notch in said test chamber and into said interior of said test chamber, said device in its testing mode with a fluid specimen contained within said cup and said cover lid attached thereto, to be inverted, causing said fluid to flow into said interior of said test chamber, when said test chamber aperture is open, and to come in contact with said second end portion of said reagent strip, said fluid being carried along said reagent strip to said color change testing area to create a test result which test result can be viewed through said window in said cover lid.
Claim 3
Dependent Claim
35 words
The device of claim 1 having a plurality of test chambers and a corresponding number of reagent strips wherein said reagent strips are disposed extending radially outward from said central portion of said cover lid.
Claim 4
Dependent Claim
28 words
The device of claim 1 having a plurality of test chambers and a corresponding number of reagent strips wherein said reagent strips are disposed parallel to one another.
Claim 5
Dependent Claim
26 words
The device of claim 1 wherein said interior of said test chamber is of a size to contain a predetermined amount of fluid to be tested.
Claim 6
Dependent Claim
20 words
The device of claim 1 further including an absorbent pad adjacent to said first end portion of said reagent strip.
Claim 7
Dependent Claim
150 words
The device of claim 1 wherein said means to open and close said test chamber aperture further include: said strip chamber bottom wall having a bottom wall aperture defined therein corresponding in shape, size and location of each of said test chamber aperture, said bottom wall aperture positioned over each test chamber aperture; a rotatable planar member having at least one aperture defined therein corresponding in shape, size and location of said test chamber aperture; and means to rotate said planar member to alternately align said planar member aperture in said planar member with said test chamber aperture to allow fluid to enter said interior of said test chamber and to misalign said planar member aperture in said planar member with said test chamber aperture to cause portions of said planar member to cover over said test chamber aperture to capture said fluid within said interior of said test chamber.
Claim 8
Dependent Claim
82 words
The device of claim 6 wherein said means to rotate said planar member further includes: a knob disposed above the top of said cover lid; and a rotatable shaft having a first end and a second end, said first end attached to said knob, said shaft passing through said central portion aperture of said central portion of said cover lid and through said bottom wall aperture of said bottom wall with said second end of said shaft attached to said planar member.
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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) | 1999-03-26 | 1999-09-25 | 2000-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-03-26 | 2003-09-25 | 2004-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-03-26 | 2007-09-25 | 2008-03-26 | $7700.00 | Window Closed / Lapsed |