Propellant augmented pressurized gas dispensing device

Details Propellant augmented pressurized gas dispensing device Propellant augmented pressurized gas dispensing device

1982-12-16

1986-07-15

Rolla, Joseph J.

Dispensing

Gas or vapor dispensing

102530, 137 682, 220 89A, F16K 1740

Patent

active

046001239

ABSTRACT:
A propellant augmented, gas dispensing device is charged with a pressurized gas during assembly by inserting the gas in its solid form into the pressure chamber and thereafter sealing the pressure chamber. The gas is chosen so that it is in its gaseous state at normal ambient conditions. In another aspect, an improved pressure relief assembly includes a burst disc affixed to a flow passage between the pressurized gas chamber and the propellant chamber for normally preventing flow through the passage. In its preferred form, the burst disc carries an annular score line. A support member is provided on the propellant side of the burst disc and is placed in supporting contact with the burst disc adjacent the score line. The support member has a central opening communicating with the passageway to the propellant chamber. The score line is located outwardly from the central opening. The support structure allows the disc to rupture in the region of the central opening upon the occurrence of a predetermined high pressure in the gas chamber, while permitting the disc to rupture along the score line when the pressure difference between the propellant chamber and the gas chamber exceeds a predetermined low pressure on the propellant side of the disc.

REFERENCES:
patent: 3269310 (1966-08-01), Wismar
patent: 3642304 (1972-02-01), Johnson et al.
patent: 3749419 (1973-07-01), Usui et al.
patent: 3806153 (1974-04-01), Johnson
patent: 3895821 (1975-07-01), Schotthoefer et al.
patent: 3897962 (1975-08-01), Sack

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