Importance

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Abstract

In a dispense tip adapter system, an adapter unit provides for compatibility between high-performance dispensing needles and conventional dispensing pump systems. The dispensing pump includes an outlet through which dispensed material is delivered, and includes an output body with alignment pins extending therefrom and first threads about the body. The dispensing needle includes a longitudinally-disposed body and neck, the body and neck including a longitudinal port providing a path for delivery of the dispensed material through the dispensing needle. The body of the dispensing needle includes an outer surface that is keyed for angular positioning of the needle with respect to the pump. The adapter includes an alignment plate, and index plate and an adapter nut. The alignment plate comprises a plurality of alignment holes for mating with the alignment pins, a material aperture aligned with the pump outlet, and a plurality of index pins extending from the body of the alignment plate. The index plate comprises a plurality of index holes for mating with the index pins, the index holes spaced to provide for positioning of the index plate with respect to the alignment plate at a plurality of discrete angular positions. The index plate includes an orientation pocket having a keyed inner surface substantially matched to the outer surface of the body of the dispensing needle. The nut has an inner recess for containing the index plate and the alignment plate, and further includes a pin aperture in alignment with the orientation pocket and second threads for mating with the first threads. When the nut is tightened, index plate and alignment plate are secured against the pump output body.

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First Claim