초록 ▼

A non-propellant operated, duration spray dispenser includes structure for mechanically pressurizing the material to be dispensed by pumping it into an expansible bulb for storage under pressure for subsequent dispensing of the material, and a snap-acting positive shut off valve is provided to termi

A non-propellant operated, duration spray dispenser includes structure for mechanically pressurizing the material to be dispensed by pumping it into an expansible bulb for storage under pressure for subsequent dispensing of the material, and a snap-acting positive shut off valve is provided to terminate discharge of the material when pressure falls below a predetermined minimum.

대표청구항 ▼

An aerosol dispenser, comprising: a container for material to be dispensed, said container having a side wall, a closed end and an open end; and dispensing means carried by the container at the open end thereof and having an outlet for dispensing material from the container, said dispensing means in

An aerosol dispenser, comprising: a container for material to be dispensed, said container having a side wall, a closed end and an open end; and dispensing means carried by the container at the open end thereof and having an outlet for dispensing material from the container, said dispensing means including manually operated expansible chamber means for pressurizing the material, an expansible accumulating chamber for accumulating a quantity of the material under pressure from the expansible chamber means, and discharge means for discharging the pressurized material from the accumulating chamber said discharge means including a manually operated valve for releasing pressurized material from the accumulating chamber, and a snap-acting positive shut off valve separate from the accumulating chamber and operative in response to pressure of material released by the manually operated valve to abruptly open and enable discharge of material to atmosphere when the pressure rises above a predetermined minimum and to terminate flow when the pressure falls below a predetermined minimum.