Patent US3780992A successfully refreshed from Google Patents.
US3780992A
Expired / Lapsed
US
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Vibrating pipette probe mixer
Assignee: DEPARTMENT OF HEALTH EDUCATION
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Filing: 1972-07-17
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Granted: 1973-12-25
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Expires: 1992-07-17
Abstract
Abstract A vibrating pipette probe mixer is disclosed having means to vibrate the pipette so that when delivering extremely small quantities of liquid, accurate mixing and dispensing is achieved. The vibrating means may be either a mechanical vibrator attached to the pipette by a stiff wire or a fluidic oscillator attached to the pipette by opposing disc shaped diaphragms.
Inventors
- 👤 H Nishi
- 👤 C Mccarthy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:55
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/02; B01L3/021; B01F; B01F31/00; B01F31/42; G; G01; G01N; G01N35/00; G01N35/10; G01N2035/1027; G01N2035/1048; G01N2035/1058
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
43 words
In a pipette for dispensing microliter quantities of solution connected to a source of solution, the improvement comprising: vibrating means connected to said pipette for causing the oscillation of said pipette to achieve simultaneous dispensing and mixing of said microliter quantities of solution.
Claim 2
Dependent Claim
43 words
In a pipette for dispensing microliter quantities of solution connected to a source of solution, the improvement comprising: vibrating means connected to said pipette for causing the oscillation of said pipette to achieve simultaneous dispensing and mixing of said microliter quantities of solution.
Claim 3
Dependent Claim
30 words
A pipette in accordance with claim 1 wherein: said vibrating means comprises a mechanical oscillating device and a stiff wire wherein said wire connects said pipette with said oscillating device.
Claim 4
Dependent Claim
19 words
A pipette in accordance with claim 2 wherein: said oscillating device comprises a magnetic solenoid or an electronic rectifier.
Claim 5
Dependent Claim
65 words
A pipette in accordance with claim 1 wherein said vibrating means comprises: air pressure lines; inflatable diaphragms connected to said air pressure lines and abutting said pipette on opposite sides thereof; and fluidic oscillator means for alternately supplying air pressure through said air pressure lines to cause inflation of each of said diaphragms, the alternate inflation of said diaphragms causing said pipette to be vibrated.
Claim 6
Dependent Claim
22 words
A pipette in accordance with claim 1 further including: a flexible connector means for connecting said pipette with said source of solution.
Claim 7
Dependent Claim
19 words
A pipette in accordance with claim 1 wherein said vibrating meanS includes means for varying the amplitude of oscillation.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |