Back to results
US 4,395,921 AGranted
Adjustable volume liquid dispenser
AssigneeScientific Manufacturing Industries, Inc.
InventorJon E. Oppenlander
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeScientific Manufacturing Industries, Inc.
InventorJon E. Oppenlander
Estimating the term…
An adjustable volume dispenser comprises a barrel assembly having an internally threaded tubular portion, an adjustable stop formed with external threads engaged with the internal threaded tubular portion of said assembly, and a sleeve coaxially mounted within the tubular portion and rotatable therein, said sleeve being connected to the adjustable stop for imparting rotation thereto but allowing said stop to move axially thereon. A finger engageable wheel connects to the sleeve for rotating the adjustable stop relative to the barrel assembly, a plurality of numbered wheels being coaxially connected to the finger engageable wheel for indicating the position of the stop and the volume of liquid to be dispensed. A plunger assembly is provided including a rod reciprocally removeable within the barrel assembly, said rod extending coaxially through the adjustable stop, the sleeve and said wheels. The rod carries a fixed stop which cooperates with the adjustable stop, limiting the reciprocating throw of the plunger assembly.
An adjustable volume dispenser comprising:
An adjustable volume dispenser having a barrel assembly, a plunger assembly mounted within said barrel assembly for axial reciprocation, a pair of engageable stops, one of said stops being mounted on said plunger assembly and movable therewith, the other stop being mounted within said barrel assembly for axial adjustment, and an improvement in means for axially adjusting the location of said other stop comprising:
Dependencies are inferred from the claim text.