Dispensing – Fluid flow discharge – Pressurized aerosol container
Patent
1998-12-29
2000-06-06
Kaufman, Joseph A.
Dispensing
Fluid flow discharge
Pressurized aerosol container
2224021, 22240216, 22240225, B65D 8314
Patent
active
060707704
ABSTRACT:
An aerosol valve and flow regulator in a valve housing for use with a can holding flowable product and compressed gas propellant. The flow regulator is positioned upstream of the aerosol valve, and includes (a) a conical valve seat of hard material extending inwardly of the valve housing and having two diametrically opposed triangular grooves extending in the flow direction, and (b) a relatively soft elastic regulating member with a spherical surface to contact and seal the conical valve seat under gas pressure from the can and to press into the two triangular grooves under higher gas pressures to regulate the flow area of the two triangular grooves over a substantial range of gas pressures to provide a substantially constant product flow rate. The one-piece valve housing has a non-obstructing interior bore upstream of the flow regulator to facilitate insertion of the regulating member. A plug member with an internal bore is inserted into the base of the valve housing to secure the regulating member, and a dip tube may be inserted into the plug member bore. The triangular grooves have width and depth dimensions preferable of 0.2 mm. The regulating member is relatively soft Santoprene.RTM. thermoplastic elastomer two-phase elastomeric alloy material with a Shore scale hardness of 55.degree.-64.degree. A.
REFERENCES:
patent: 3060965 (1962-10-01), Taggart
patent: 3348742 (1967-10-01), Assalit
patent: 3598292 (1971-08-01), Kiliany
patent: 3669316 (1972-06-01), Corsette
patent: 5697532 (1997-12-01), Wilde et al.
Iizuka Naomi
Tada Yukitoshi
Takeguchi Yutaka
Kaufman Joseph A.
Precision Valve Japan, Limited
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