Patent US4281768A successfully refreshed from Google Patents.
US4281768A
Expired / Lapsed
US
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Assay tube rack
Assignee: Individual
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Filing: 1979-08-10
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Granted: 1981-08-04
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Expires: 1999-08-10
Abstract
Abstract An assay tube rack which includes means for holding the assay tubes disposed therein in visually discernable groups wherein each assay tube in each group will be visible in elevation when the rack is viewed from a predetermined direction. The groups of tubes may consist of two or more tubes. The combination of discernable tube groups plus visibility of each assay tube in each group makes the rack particularly useful in performing titration tests on specimens contained in the tubes, as for example, in radioimmunoassay testing.
Inventors
- 👤 Philip B. Sommers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:03
CPC Classifications
B; B01; B01L; B01L9/00; B01L9/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
215 words
In an assay tube rack of the type having supporting means for holding a plurality of assay tubes and having opposed open sides, the improvement comprising: means forming associations of holes in said rack, there being one association of said holes traversing each of said opposed open sides of said rack; each of said associations of holes comprising distinctly separated groups of holes consisting of three holes in each group, wherein a first hole in each group is disposed closely adjacent to a respective side of said rack, a second hole in each group is disposed more remote from said respective side of said rack than said first hole with the axis of said second hole being laterally offset from the axis of said first hole, and a third hole in said group is disposed more remote from said respective side wall than said second hole with the axis of said third hole being disposed between parallel line projections of the axes of said first and second holes, and wherein a side of said first hole in one group is laterally offset from an adjacent side of said second hole in an adjacent group thereby providing a distinct grouping of assay tubes when the groups of holes in said rack are filled with assay tubes.
Claim 2
Dependent Claim
215 words
In an assay tube rack of the type having supporting means for holding a plurality of assay tubes and having opposed open sides, the improvement comprising: means forming associations of holes in said rack, there being one association of said holes traversing each of said opposed open sides of said rack; each of said associations of holes comprising distinctly separated groups of holes consisting of three holes in each group, wherein a first hole in each group is disposed closely adjacent to a respective side of said rack, a second hole in each group is disposed more remote from said respective side of said rack than said first hole with the axis of said second hole being laterally offset from the axis of said first hole, and a third hole in said group is disposed more remote from said respective side wall than said second hole with the axis of said third hole being disposed between parallel line projections of the axes of said first and second holes, and wherein a side of said first hole in one group is laterally offset from an adjacent side of said second hole in an adjacent group thereby providing a distinct grouping of assay tubes when the groups of holes in said rack are filled with assay tubes.
Claim 3
Dependent Claim
36 words
The assay tube rack of claim 1, wherein, in each group, opposite sides of said third hole are contained within parallel projections of the outermost sides of said first and second holes in the same group.
References Cited (Backward Citations)
US334492A
Cited
US3379315A
Cited
US3532221A
Cited
US3604566A
Cited
US3778232A
Cited
US4124122A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-03 | 1985-02-02 | 1985-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-03 | 1989-02-02 | 1989-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-03 | 1993-02-02 | 1993-08-04 | $7700.00 | Window Closed / Lapsed |