Patent US3999868A successfully refreshed from Google Patents.
US3999868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unit for use in optical analysis
Assignee: Individual
•
Filing: 1975-11-17
•
Granted: 1976-12-28
•
Expires: 1995-11-17
Abstract
Abstract A unit for use in optical analysis is adapted to be mounted in a radial position on a centrifuging rotor and comprises a straight tubular cell. One end of the tubular cell is open and the other end is closed by an optically transparent wall which is substantially perpendicular to the longitudinal axis of the cell. The cell receives one component of a solution to be optically analysed and a second component of the solution is received in a recess of a cover of the unit releasably secured in a position closing the open end of the cell. The cover is formed with an aperture connecting the recess of the cover to the cell in the closed position, so that the second component can flow into the cell during centrifuging.
Inventors
- 👤 Manuel Sanz
- 👤 Georges Revillet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:28
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/01; G01N21/03; G01N21/07; B; B04; B04B; B04B5/00; B04B5/04; B04B5/0407; B04B5/0414; Y; Y10; Y10S; Y10S494/00; Y10S494/90
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
134 words
A unit for containing a solution to be optically analysed and for mounting in a radial position on a centrifuging rotor, which unit comprises: a straight tubular cell for containing a first component of the solution and having one end open and the other end closed by an optically transparent wall which is substantially perpendicular to the longitudinal axis of the cell; a cover for closing the open end of said cell; and means releasably to secure the cover in a position closing the open end of the cell; the cover being formed with a recess for containing a second component of the solution and with at least one aperture connecting the said recess to the cell in the closed position, through which aperture the second component can flow into the cell during centrifuging.
Claim 2
Dependent Claim
134 words
A unit for containing a solution to be optically analysed and for mounting in a radial position on a centrifuging rotor, which unit comprises: a straight tubular cell for containing a first component of the solution and having one end open and the other end closed by an optically transparent wall which is substantially perpendicular to the longitudinal axis of the cell; a cover for closing the open end of said cell; and means releasably to secure the cover in a position closing the open end of the cell; the cover being formed with a recess for containing a second component of the solution and with at least one aperture connecting the said recess to the cell in the closed position, through which aperture the second component can flow into the cell during centrifuging.
Claim 3
Dependent Claim
24 words
A unit according to claim 1, wherein the cell and the cover are constituted by two straight tubular members nesting one in the other.
Claim 4
Dependent Claim
21 words
A unit according to claim 2, wherein the cell and the cover are of substantially the same volume as one another.
Claim 5
Dependent Claim
25 words
A unit according to claim 2, wherein the optically transparent wall is recessed relative to the end of the tubular member which constitutes the cell.
Claim 6
Dependent Claim
23 words
A unit according to claim 1, wherein the cover is made of a material which can be cold pierced by a metal point.
References Cited (Backward Citations)
US3713775A
Cited
US3844662A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-12-28 | 1980-06-28 | 1980-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-28 | 1984-06-28 | 1984-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-28 | 1988-06-28 | 1988-12-28 | $7700.00 | Window Closed / Lapsed |