US3244009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic pipette
Assignee: Becton Dickinson and Co
•
Filing: 1963-08-22
•
Granted: 1966-04-05
•
Expires: 1983-08-22
Abstract
No abstract record available.
Inventors
- 👤 Helmut G Tietje
- 👤 Jr Robert Schwarz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:14
CPC Classifications
B; B01; B01L; B01L9/00; B01L9/54; B01L9/543; A; A61; A61B; A61B5/00; A61B5/15; A61B5/150007; A61B5/150015; A61B5/150022; A61B5/150053; A61B5/150061; A61B5/150099; A61B5/150206; A61B5/150213; A61B5/150236; A61B5/150244; A61B5/150259; A61B5/150343; A61M; A61M1/00; A61M5/00; A61M5/178; A61M5/31; A61M5/315; A61M5/32; A61M5/34; A61M5/344; B01L3/00; B01L3/02; B01L3/021; B01L3/0213; B01L3/0217; B01L3/0224; B01L3/0231; B01L3/0241; B01L3/0275; B01L3/0279; B01L3/0282; B01L9/06; C; C01; C01B; C01B17/00; C01B17/69; C01B17/90; C01B17/907; A61M5/31525; A61M5/31531; A61M5/346; A61M5/347; B01L2200/00; B01L2200/04; B01L2300/00; B01L2300/08; B01L2300/0832; B01L2300/0838
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
AN AUTOMATIC PIPETTE COMPRISING A BARREL, A PISTON RECIPROCAL FORWARDLY AND REARWARDLY THEREIN, A DISPOSABLE TIP, COUPLING MEANS FOR INTERCONNECTING SAID TIP WITH THE FORWARD END OF SAID BARREL, WHEREBY UPON RETRACTION REARWARDLY OF SAID PISTON RELATIVE TO SAID BARREL, LIQUID IS ADAPTED TO BE DRAWN INTO SAID TIP SHORT OF SAID BARREL WITH A BODY OF AIR BEING DISPOSED INTERMEDIATE THE PISTON AND THE LIQUID IN SAID TIP AND UPON FORWARD MOVEMENT OF THE PISTON, THE INTERPOSED AIR WILL ACT ON THE LIQUID TO DISPENSE THE LIQUID FROM THE TIP, SAID COUPLING MEANS BEING SO CONSTRUCTED AND ARRANGED SUCH THAT THE LONGITUDINAL AXIS OF SAID TIP IS DISPOSED AT AN ACUTE ANGLE WITH RESPECT TO THE AXIS OF SAID BARREL, AND KEY MEANS PROVIDED BY SURFACES OF SAID COUPLING MEANS AND THE FORWARD END OF SAID BARREL FOR ASSURING A PREDETERMINED DISPOSITION OF THE COUPLING MEANS RELATIVE TO SAID BARREL.
Claim 2
Dependent Claim
151 words
AN AUTOMATIC PIPETTE COMPRISING A BARREL, A PISTON RECIPROCAL FORWARDLY AND REARWARDLY THEREIN, A DISPOSABLE TIP, COUPLING MEANS FOR INTERCONNECTING SAID TIP WITH THE FORWARD END OF SAID BARREL, WHEREBY UPON RETRACTION REARWARDLY OF SAID PISTON RELATIVE TO SAID BARREL, LIQUID IS ADAPTED TO BE DRAWN INTO SAID TIP SHORT OF SAID BARREL WITH A BODY OF AIR BEING DISPOSED INTERMEDIATE THE PISTON AND THE LIQUID IN SAID TIP AND UPON FORWARD MOVEMENT OF THE PISTON, THE INTERPOSED AIR WILL ACT ON THE LIQUID TO DISPENSE THE LIQUID FROM THE TIP, SAID COUPLING MEANS BEING SO CONSTRUCTED AND ARRANGED SUCH THAT THE LONGITUDINAL AXIS OF SAID TIP IS DISPOSED AT AN ACUTE ANGLE WITH RESPECT TO THE AXIS OF SAID BARREL, AND KEY MEANS PROVIDED BY SURFACES OF SAID COUPLING MEANS AND THE FORWARD END OF SAID BARREL FOR ASSURING A PREDETERMINED DISPOSITION OF THE COUPLING MEANS RELATIVE TO SAID BARREL.
References Cited (Backward Citations)
US1039591A
Cited
FR711644A
Cited
US2161711A
Cited
US2566436A
Cited
US2959964A
Cited
US3040931A
Cited
US2959170A
Cited
US3013435A
Cited
US3084592A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |