초록 ▼

A fluid dispenser includes a disposable reservoir for containing a fluid and a tube depending therefrom for dispensing measured quantities of fluid. The tube includes a fluid dispensing orifice and a plunger for forcing measured quantities of fluid through the orifice. A solenoid disposed adjacent t

A fluid dispenser includes a disposable reservoir for containing a fluid and a tube depending therefrom for dispensing measured quantities of fluid. The tube includes a fluid dispensing orifice and a plunger for forcing measured quantities of fluid through the orifice. A solenoid disposed adjacent tube magnetically engages and moves the plunger in order to cause the plunger to force the measured quantities of fluid through the orifice. A control system is provided which includes a Theremin antenna for sensing the presence of a user's hand beneath the orifice and providing electrical current to the solenoid to enable the solenoid to magnetically engage and move the plunger.

대표청구항 ▼

[What is claimed is:] [1.]a housing;reservoir means, disposed in said housing, for containing a supply of fluid;tubular means for receiving fluid from said reservoir means by the force of gravity, said tubular means having an orifice and a valve seat disposed at a dispensing end of said tubular mean

[What is claimed is:] [1.]a housing;reservoir means, disposed in said housing, for containing a supply of fluid;tubular means for receiving fluid from said reservoir means by the force of gravity, said tubular means having an orifice and a valve seat disposed at a dispensing end of said tubular means;a plunger slidably disposed within said tubular means for movement between a first and a second position, said plunger having an opening therethrough for enabling fluid to flow past the plunger and a valve face for sealably engaging said valve seat in the plunger first position;solenoid means disposed in said housing adjacent said tubular means, for magnetically engaging and moving said plunger from the first position to the second position upon activation of said solenoid means by electrical current, the second position being above the first position with said valve face disengaged from said valve seat, movement of said plunger to the second position causing fluid flow past said plunger into a tubular means lower portion;spring means, disposed within said tubular means, for forcing said plunger to the first position upon deactivization of said solenoid means in order to force fluid in the tubular means lower portion through said orifice and provide sealing pressure between the valve face and valve seat to prevent fluid leakage;first one-way valve means for preventing fluid in a tubular means lower portion from flowing past said plunger as the plunger moves to the first position and enabling fluid from a tubular means upper portion to flow into the tubular means lower portion as the plunger moves to the second position; andcontrol means for sensing the presence of a user's hand beneath said orifice and providing electrical current to said solenoid means for a duration of time.