Foam actuator for metering an aerosol product
AssigneePrecision Valve Corporation
InventorVirgil Naku
Life of this patent
Estimating the term…
Abstract
A metering actuator for dispensing the pressurized contents of an aerosol container through a tubular valve stem associated therewith, the actuator having a valve-opening member to receive the valve stem and conduct the contents of the container to a metering chamber formed between the valve-opening member and a surrounding finger-bearing member, which finger-bearing member has a conduit connecting the metering chamber and a discharge orifice; wherein a seal is effected between a dome shaped portion of the valve-opening member and a hub on the finger-bearing member to close off the conduit from the metering chamber to the discharge orifice, and wherein, there is a seal effected between a mating annual wall and recess disposed on the outer portions of the finger-bearing and valve-opening members.
Claims4
A metering actuator for dispensing the pressurized contents of an aerosol container through a tubular valve stem associated therewith comprising:
- (a) a valve-opening member having a hub defining a recess suitable for receiving a valved, tubular valve stem, said hub having a conduit therethrough communicating at one end with the valve stem and at the other end with a metering chamber, said hub further having a dome portion, an annular lateral flange, an annular sidewall extending downwardly from the lateral flange, and sealing means associated with the annular side-wall;
- (b) a finger-bearing member constructed so as to surround and seal with the valve-opening member, having a hub defining a recess suitable for receiving the dome portion of the valve-opening member in sealing relation, and said hub defining, at least in part, a conduit for the flow of material to a discharge nozzle, said finger-bearing member further having (i) an annular side-wall having sealing means associated therewith, (ii) a flexible flange extending laterally from the side wall, and (iii) a further annular sidewall extending downwardly from the flexible flange suitable for attaching the finger-bearing member to the valve closure bead of an aerosol container;
- (c) the sealing means of the valve opening member and the finger bearing member forming an interference fit between an upstanding annular wall and a mating recess;
- and
- (d) a metering chamber defined by the undersurface of the finger-bearing member and the outersurface of the valve-opening member.
A metering actuator for dispensing the pressurized contents of an aerosol container through a tubular valve stem associated therewith comprising:
- (a) a valve-opening member having a hub suitable for receiving a valved tubular valve stem, said hub having a conduit therethrough the tubular valve stem communicating at one end with the opening in the tubular valve stem and at the other end with a metering chamber, said hub further having a dome portion, a flange and an annular side-wall extending downwardly from the flange and terminating in a second flange extending from the side-wall, said second flange having an upstanding annular wall;
- and
- (b) a finger-bearing member surrounding and fitted to the valve-opening member, said finger bearing member having a hub defining a recess suitable for receiving in a sealing relation the dome portion of the valve-opening and defining at least in part, a conduit for the flow of material to a discharge nozzle;
- said finger-bearing member further having a side-wall having a recess for receiving and sealing with upstanding annular wall of the valve-opening member;
- (c) a flexible flange extending outwardly from the sidewall of the finger-bearing member and terminating in a second side-wall suitable for attaching the finger-bearing member to the closure bead of an aerosol container;
- and
- (d) a metering chamber defined by the undersurface of the finger-bearing member and the outersurface of the valve-opening member.
Dependencies are inferred from the claim text.