Measuring and testing – Measuring vessel
Patent
1974-03-15
1976-08-24
Queisser, Richard C.
Measuring and testing
Measuring vessel
222309, G01N 114, G01F 1106
Patent
active
039759601
ABSTRACT:
A fluid sampler which may be held in the hand in the manner of a pencil is provided with an overstroke so that after a plunger is operated with a certain stroke to sample a determinable amount of fluid, the plunger can then be operated with an overstroke to make certain that all fluid is discharged from the sampler. The stroke of the plunger is furthermore adjustable. The sampler is provided with a longitudinally extended portable body provided with a bore extending longitudinally therethrough. A nozzle is provided at one end of the bore within which is a chamber. A plunger is located partly in the chamber and partly in the bore with a piston being operatively associated with the plunger and slidable in the bore. An adjustable control is provided in the bore to adjust the stroke of the piston. A lever is mounted on the body to operate the plunger through the intermediary of the piston whereby fluid may be drawn into or discharged from the aforementioned chamber. A stroke-and-overstroke arrangement is operatively coupled with the lever to cooperate with the control to define the limits of a stroke for the piston for the sampling of a fluid and to enable an overstroke of the piston upon discharge of the fluid thus to insure the complete discharge of the fluid. The stroke and overstroke arrangement includes a spring-loaded sphere yieldably engaging a detent in the lever when the lever is intermediate the limits of its movement.
REFERENCES:
patent: 2458508 (1949-01-01), Goetz
patent: 2487825 (1949-11-01), Olvis
patent: 2660342 (1953-11-01), Ruf
patent: 3097763 (1963-07-01), Aluotto
patent: 3491919 (1970-01-01), Ramsay
patent: 3656351 (1972-04-01), Raczak
patent: 3713774 (1973-01-01), Southwick
patent: 3786683 (1974-01-01), Berman et al.
patent: 3810391 (1974-05-01), Suovaniemi
Appleman John S.
Queisser Richard C.
Rockwell Stephen E.
Technicon Instruments Corporation
Tedesco S. P.
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