Interchangeable tip for discrete dropping apparatus

Claim 1

An apparatus for dispensing accurate mono-dispersed aerosol droplets comprising a syringe means to contain the liquid to be dispensed; a female adapter means having a dropping needle integral therewith and a male thread means integral therewith and adapted to mate with a female thread means of a male adapter means, said female adapter means being adapted to connect in a friction fit with the syringe means to form a liquid leak proof joint; a male adapter means having female thread means formed in each end, a conduit means formed axially therethrough, and an adapter means integral with the male adapter means in the center thereof, said male adapter means being adapted to connect to the female adapter means and a conduit needle means in liquid leak proof joints; a needle conduit means having a male thread integral therewith, said needle conduit means being adapted to connect to the male adapter means in a liquid leak proof joint; a channel means formed in the adapter means integral with the male adapter means, said channel means being adapted to communicate with the conduit means and a tubing means adapted to connect to the adapter means integral with the male adapter means; a tubing means adapted to connect the adapter means integral with the male adapter means with a fluid tank means; and a fluid tank adapted to supply fluid to the conduit means, the channel means, and the conduit needle means.

Claim 2

An apparatus for dispensing accurate mono-dispersed aerosol droplets comprising a syringe means to contain the liquid to be dispensed; a female adapter means having a dropping needle integral therewith and a male thread means integral therewith and adapted to mate with a female thread means of a male adapter means, said female adapter means being adapted to connect in a friction fit with the syringe means to form a liquid leak proof joint; a male adapter means having female thread means formed in each end, a conduit means formed axially therethrough, and an adapter means integral with the male adapter means in the center thereof, said male adapter means being adapted to connect to the female adapter means and a conduit needle means in liquid leak proof joints; a needle conduit means having a male thread integral therewith, said needle conduit means being adapted to connect to the male adapter means in a liquid leak proof joint; a channel means formed in the adapter means integral with the male adapter means, said channel means being adapted to communicate with the conduit means and a tubing means adapted to connect to the adapter means integral with the male adapter means; a tubing means adapted to connect the adapter means integral with the male adapter means with a fluid tank means; and a fluid tank adapted to supply fluid to the conduit means, the channel means, and the conduit needle means.

Claim 7

A method of dispensing accurate mono-dispersed aerosol droplets comprising the steps of filling a syringe means with a liquid to be dispensed, connecting the syringe means to one end of a female adapter means having a dropping needle integral therewith by friction fit, connecting the female adapter means at the end opposite to the end connected to the syringe means to one end of a male adapter means, connecting a conduit needle means to the end of the male adapter means opposite to the end of the male adapter means connected to the female adapter means, connecting a fluid supply to the male adapter means to provide communication of the fluid supply with a conduit formed axially through the male adapter means, depressing a plunger means movably mounted within the syringe means until a droplet of the liquid within the syringe means forms on the tip of the dropping needle, releasing pressure on the plunger means, supplying fluid flow to the conduit needle means to blow the droplet of liquid off of the dropping needle to a receiver means, and blowing the droplet of liquid off of the dropping needle to a receiver means.

Claim 8

A method of dispensing accurate mono-dispersed aerosol droplets comprising the steps of filling a syringe means with a liquid to be dispensed, connecting the syringe means to one end of a female adapter means having a dropping needle integral therewith by friction fit, connecting the female adapter means at the end opposite to the end connected to the syringe means to one end of a male adapter means, connecting a conduit needle means to the end of the male adapter means opposite to the end of the male adapter means connected to the female adapter means, connecting a fluid supply to the male adapter means to provide communication of the fluid supply with a conduit formed axially through the male adapter means, depressing a plunger means movably mounted within the syringe means until a droplet of the liquid within the syringe means forms on the tip of the dropping needle, releasing pressure on the plunger means, supplying fluid flow to the conduit needle means to blow the droplet of liquid off of the dropping needle to a receiver means, and blowing the droplet of liquid off of the dropping needle to a receiver means.