Dispensing – With recorder – register – indicator – signal or exhibitor – Position or extent of motion indicator
Patent
1988-03-22
1989-08-01
Rolla, Joseph J.
Dispensing
With recorder, register, indicator, signal or exhibitor
Position or extent of motion indicator
222 47, 222 39, 222390, 604211, 604220, 604224, 604228, B67D 542
Patent
active
048527688
ABSTRACT:
A dosing syringe has a cylindrical syringe body which at its tapering end has a dispensing orifice and at its other end a stepped cylindrical enlargement with two opposing handles. A recess is located below each handle, and a piston is inserted into the cylindrical syringe body. The piston is in contact with a dosing plunger having an external thread. Two threaded sides are arranged around the plunger and each threaded side has a positioning projection introduced into the recesses of the enlargement. According to the invention, the piston is connected to the dosing plunger by a spring retainer connection and the threaded sides have an outside groove in which an O-ring is inserted in countersunk fashion to hold the two threaded sides together. As a result, the piston-dosing unit can be prefabricated and introduced as a complete unit including the threaded sides into the enlargement of the syringe body where it is fixed simplifying the production technology of the dosing syringe.
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Blendax-Werke - R. Schneider GmbH & Co.
Parker Stephen B.
Rolla Joseph J.
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