Help or lost balloon

Claim 2

A fitting adapted to admit gas into an inflatable balloon and retain the gas in the balloon after inflating, comprising an inlet with conical walls in communication with a small opening leading to a chamber having an apertures disc in said chamber normally sealing said opening, including spring means brasing said disc to the closed position, including an outlet portion leading from said chamber adapted to be attached by insertion into the neck of a balloon whereby axial pressure against the disc towards said outlet will break the sealing engagement causing gaseous communication between the inlet and outlet via said disc apertures, said chamber being external of the balloon.

Claim 3

A fitting as in claim 1 in combination with device for filling the balloon with gas via said fittings, wherein said device comprises a gas filled cartridge under pressure greater than atmospheric pressure and a dispenser unit normally separate from said fitting, having means for normally retaining gas within said cartridge when separate from said fitting and additional means for connection with said fitting and admitting said gas into said balloon through said fitting when said fitting and said unit are connected, wherein the first said means comprises an apertured washer sealingly engaging a valve seat encompassing an outlet duct, said washer being brased to the sealed position by spring means, and wherein the said additional means comprise an outerconical surface encompassing an axial bore, including prong slidably mounted in said bore and extending externally of said unit axially beyond said conical surface, said prong being affixed to said washer and having an internal conduit, including an intermediate chamber surrounding said prong between the said bore and said disc wherein said conical surface is adapted to fit sealingly in said conical walls of fitting to connect the fitting and the unit, and wherein such insertion causes said prong to sealingly enter said small opening in said fitting thereby simultaneously causing opposing axial pressure on said disc and washer whereby gas flows from cannister to ballon.

Claim 4

The combination of claim 2 wherein the prong is of a length that will cause unseating of the disc when the conical surface is in snug sealing contact with the conical walls and the conduit in said prong will be within the first said chamber.