Importance

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Abstract

The present invention generally relates to a dispensing mechanism assembly. In one embodiment, the dispensing mechanism assembly comprises a delivery screw, said delivery screw having at least one sidewall, said sidewall having a plurality of extensions extending along the longitudinal axis of the sidewall, a piston, a piston rod, said piston rod having a profile on its outer periphery to engage with the delivery screw; and an actuating means, said actuating means having a profile on its inner periphery to engage with the plurality of extensions on the delivery screw wherein the delivery screw having a novel structure allows the screw to perform dual function of a conventional screw and of an acoustic generating part. The delivery screw's novel structure reduces the number of parts required in the assembly and thereby lowers the manufacturing costs while providing a soft but firm sound during operation.

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First Claim