Measuring and testing – Sampler – sample handling – etc. – Capture device
Patent
1985-09-09
1987-07-14
Spitzer, Robert
Measuring and testing
Sampler, sample handling, etc.
Capture device
7386414, 7386418, 422100, 604191, 604218, G01N 114
Patent
active
046794468
ABSTRACT:
A multi-volume displacement pipette assembly has a tubular body with a first end for receiving a plunger assembly and a second mounting end for mounting a removable dispensing tip to the tubular body. A first cylindrical chamber extends through the tubular body for holding a first volume of fluid. The first cylindrical chamber opens through the second end of the tubular body. At least one second cylindrical chamber extends through the tubular body for holding a second volume of fluid. The such at least one cylindrical chamber is coaxially aligned with the first chamber and is open through the second end of the tubular body through a fluid pathway extending through the tubular body to the second end. A plunger assembly is coaxially positioned within the tubular body and operatively mounted therein for reciprocal, longitudinal movement. The plunger assembly includes a first portion having an external diameter substantially equal to the internal diameter of the first cylindrical chamber and at least one second portion axially aligned with the first portion and having an external diameter substantially equal to the internal diameter of such at least one second cylindrical chamber. The pipette assembly includes removable dispensing tips which can be mounted on the second end of the tubular body. Depending upon which removable dispensing tip is mounted on the second end, the fluid pathway interconnecting such at least one second cylindrical chamber with the second end is either blocked or open to fluid flow.
REFERENCES:
patent: 3606086 (1971-09-01), Drummond et al.
patent: 3640434 (1972-02-01), Walker
patent: 3815790 (1974-06-01), Allen et al.
patent: 3827305 (1974-08-01), Gilson et al.
patent: 3918308 (1975-11-01), Reed
patent: 4054062 (1977-10-01), Branham
patent: 4084730 (1978-04-01), Franke et al.
patent: 4178803 (1979-12-01), Lee
patent: 4215092 (1980-07-01), Suovaniemi et al.
Fleenor Richard P.
Oppenlander Jon E.
Sheehan Neil J.
Baxter Travenol Laboratories Inc.
Fentress Susan B.
Flattery Paul C.
Spitzer Robert
LandOfFree
Multi-volume displacement pipette does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multi-volume displacement pipette, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-volume displacement pipette will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1421198