Dispensing – With recorder – register – indicator – signal or exhibitor – With motion ratio adjusting means and/or relatively...
Patent
1976-07-08
1977-12-20
Knowles, Allen N.
Dispensing
With recorder, register, indicator, signal or exhibitor
With motion ratio adjusting means and/or relatively...
128218C, B67D 522
Patent
active
040636623
ABSTRACT:
Calibrating means for a microdispenser of the type wherein a plunger is operable to automatically draw a fixed volume of fluid into, and expel the liquid from, a precision capillary tube. The calibrating means includes a graduation marking on the capillary tube indicating the precise, predetermined quantity of fluid to be drawn into the tube. Calibration is effected by varying the degree of engagement of the microdispenser end cap with the microdispenser barrel, which effects corresponding longitudinal movement of the plunger with respect to the capillary tube until the outer terminal thereof is aligned with the graduation marking on the capillary tube. Friction means are provided for preventing accidental movement of the end cap after the calibration adjustment has been made.
REFERENCES:
patent: 3417904 (1968-12-01), McLay
patent: 3606086 (1971-09-01), Drummond et al.
patent: 3730389 (1973-05-01), Harris et al.
patent: 3831602 (1974-08-01), Broadwin
Drummond Michael E.
Robinson John E.
Drummond Scientific Company
Knowles Allen N.
Stack, Jr. Norman L.
LandOfFree
Calibrating means for a microdispenser does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Calibrating means for a microdispenser, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Calibrating means for a microdispenser will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-595317