US4929427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Equipment for measuring the erythrosettling rate of blood using pipettes
Assignee: STATE SpA
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Filing: 1988-05-02
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Granted: 1990-05-29
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Expires: 2008-05-02
Abstract
Abstract Equipment for measuring the rate of erythrosettling of blood comprises a plurality of pipettes, a rack for holding the pipettes upright, and a closure element for the bottom end of each pipette. The rack includes an elongated pedestal, a portal attached to the pedestal, a plurality of seats adapted to receive the pipettes by snap action and formed in the portal, and a bridge element associated with the portal and straddling it. The bridge element is displaceable elastically from a home position to a working position interfering with the pipettes, for simultaneously removing the pipettes from their snap-action holding seats. The invention affords the advantage that the operator is not required to come in contact with the blood being analyzed.
Inventors
- 👤 Piergiacomo Guala
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:22
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/04; G01N15/05
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
110 words
Equipment for measuring the rate of erythrosettling, of a type which comprises in combination a plurality of pipettes, a rack for holding said pipettes upright, and a plurality of elements, each for closing the bottom end of a respective pipette, wherein said rack comprises an elongate pedestal, a portal attached to the pedestal, a plurality of seats constructed to receive and hold by snap action pipettes provided in the portal, a bridge element positioned and arranged to straddle the portal, wherein the bridge element is elastically movable from a home position to a working position to simultaneously remove each of the pipettes from the snap-action holding seats of the rack.
Claim 2
Dependent Claim
110 words
Equipment for measuring the rate of erythrosettling, of a type which comprises in combination a plurality of pipettes, a rack for holding said pipettes upright, and a plurality of elements, each for closing the bottom end of a respective pipette, wherein said rack comprises an elongate pedestal, a portal attached to the pedestal, a plurality of seats constructed to receive and hold by snap action pipettes provided in the portal, a bridge element positioned and arranged to straddle the portal, wherein the bridge element is elastically movable from a home position to a working position to simultaneously remove each of the pipettes from the snap-action holding seats of the rack.
Claim 3
Dependent Claim
47 words
Equipment according to claim 1, wherein said rack comprises a plurality of cradles, one for each pipette, carried across the pedestal wherein the bottom end of each pipette is inserted with a respective closure element, each cradle providing a pivot point for the pipette during removal therefrom.
Claim 4
Dependent Claim
63 words
Equipment according to claim 2, wherein said closure element for each pipette is a test tube having a bottom and a mouth, and a stopper attached to the mouth and having means defining a passage axially therethrough for guidingly receiving a respective one of the pipettes, and a membrane extending across said passage and constructed and arranged to be ruptured by the pipette.
Claim 5
Dependent Claim
32 words
Equipment according to claim 2, wherein said closure element is a cap-type stopper, said cap-type stopper defining a seat for receiving the bottom end of the pipette in a push fit relationship.
Claim 6
Dependent Claim
43 words
Equipment according to claim 4, further comprising a support plate for a plurality of cap-type stoppers, said plate having means defining a plurality of holes for receiving said cap-type stoppers in slight push fit relationship with the seat of the stopper opening upwardly.
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) | 1993-05-28 | 1993-11-27 | 1994-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-28 | 1997-11-27 | 1998-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-28 | 2001-11-27 | 2002-05-29 | $7700.00 | Window Closed / Lapsed |