Total release dispensing valve

Dispensing – With lock or fastening seal – For a fluid pressure discharge assistant

Reexamination Certificate

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Details

C222S402130, C222S402140, C222S649000

Reexamination Certificate

active

06926172

ABSTRACT:
A valve assembly can automatically and essentially totally release aerosol content from an aerosol container in a single burst without the use of electric power or constant manual activation. A diaphragm at least partially defines an accumulation chamber that receives aerosol chemical from the can during an accumulation phase. Once the internal pressure of the accumulation chamber reaches a predetermined threshold, the diaphragm moves, carrying with it a seal so as to unseal an outlet channel, and thereby initiate a spray of the main active chemical. The diaphragm is held in the open position while there is elevated pressure of active in the can and/or due to a latch that activates as the diaphragm moves to the dispensing position.

REFERENCES:
patent: 3305134 (1967-02-01), Carmichael et al.
patent: 3477613 (1969-11-01), Mangel
patent: 3497108 (1970-02-01), Mason
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patent: 6216925 (2001-04-01), Garon
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patent: 3-85170 (1991-04-01), None
patent: 03 085169 (1991-04-01), None
patent: 10216577 (1998-08-01), None
patent: 2001048254 (2001-02-01), None
Patent Abstracts of Japan vol. 015, No. 256 (C-0845), Jun. 28, 1991 & JP 03 085170 A (Showa Seiki KK), Apr. 10, 1991 abstract—Spray Amount Control Mechanism of Automatic Jet Apparatus.

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