Dispensing – With discharge assistant – Fluid pressure
Reexamination Certificate
2005-04-19
2005-04-19
Mar, Michael (Department: 3754)
Dispensing
With discharge assistant
Fluid pressure
C222S402240, C251S354000
Reexamination Certificate
active
06880733
ABSTRACT:
An aerosol vessel, which can be prevented from deforming and exploding by discharging gas when an excessive pressure occurs in a main body, is provided. The aerosol vessel includes a valve assembly basically including a nozzle body fixed to the main body; a valve stem installed at the nozzle body such that it can move up and down and has a gas inlet and a gas ejection passage; an opening/closing ring installed between the nozzle body and the valve stem such that it contacts and is removably supported by a support sill of the nozzle body in order to open or close the gas inlet; and an elastic unit for restoring the valve stem after operation and elastically supporting the opening/closing ring with respect to the support sill. When an excessive pressure occurs in the main body, the opening/closing ring moves upward and overcompressed gas is discharged through the gas inlet or a gap between the valve stem and a support member. The elastic unit may be composed of a contact spring for applying pressure the opening/closing ring and a support spring for elastically support the valve stem. An extra gas outlet may be formed in the valve stem in order to discharge the overcompressed gas.
REFERENCES:
patent: 3005577 (1961-10-01), Webster
patent: 3081919 (1963-03-01), Samuel
patent: 3870203 (1975-03-01), Frankenberg
patent: 4030644 (1977-06-01), Creighton
patent: 5183189 (1993-02-01), Baudin
Cantor & Colburn LLP
Cartagena M A
Mar Michael
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