Buoys – rafts – and aquatic devices – Rafts – Inflatable
Patent
1988-10-25
1990-09-25
Peters, Jr., Joseph F.
Buoys, rafts, and aquatic devices
Rafts
Inflatable
441 93, B63B 3558
Patent
active
049590340
ABSTRACT:
A raft inflation valve includes a cylinder head which is connected to a pressure vessel and which has an inlet communicating with the pressure vessel, a recess for receiving a puncture disc, and a passage which connects the inlet and the recess and which is covered by the puncture disc. A disc retainer holds the puncture disc in position in the cylinder head covering the passage. The bayonet piston has a cutting edge formed between an abbreviated cutting face and an inverted conical cutting head for cutting and not tearing the puncture disc upon collision. A bias spring applies a bias force to the bayonet piston, and an actuating cable ball prevents movement of the bayonet piston until the cable is pulled. Once the cable has been pulled to remove the ball, the bayonet piston is driven by the bias force toward the disc to clearly cut and puncture the disc and permit flow of gas from the pressure vessel through the inlet passage through the disc to the outlet passage in the outlet of the valve. The geometry of the bayonet piston allows it to be cleanly blown free of the puncture so as to not inhibit the flow of gas.
REFERENCES:
patent: 3014619 (1961-12-01), Moran
patent: 3815783 (1974-06-01), Hirata
patent: 4267944 (1981-05-01), Mackal
Peters Jr. Joseph F.
Sotelo Jesus D.
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