Patent ID: 9352347
Filing Date: 2016-05-31
CPC Classification: B05B

Claim Text:
1. A dispensing pump constructed and arranged for assembly to a container for dispensing a composition of air and liquid, wherein a supply of said liquid is in said container, said dispensing pump comprising: closure means for assembling said dispensing pump to said container; an actuator received by a portion of said closure means; an accumulator assembled with said closure means, said accumulator defining a liquid flow passage; a piston assembled with said accumulator together defining an air chamber, said piston having a portion and said piston defining an air flow opening through said portion, said air flow opening being constructed and arranged for enabling air flow therethrough into said air chamber and for enabling a flow therethrough of air from within said air chamber for use in said composition; a stem assembled with a portion of said actuator, said stem and said piston cooperatively defining an air passage; first valve means for controlling the passage of liquid through said liquid flow passage; second valve means for controlling the passage of air through said air passage; and wherein said second valve means is constructed and arranged free of any elastomeric component which must deflect for any air valving function.