Receptacles – End wall structure – Joint or seam between sidewall and end wall
Patent
1997-04-09
1999-11-09
Castellano, Stephen
Receptacles
End wall structure
Joint or seam between sidewall and end wall
220916, 220612, 220611, 220789, B65D 632
Patent
active
059796944
ABSTRACT:
A pressure vessel, or pressurizable canister is described herein. The canister has a hollow, thin-walled, cylindrical, metal shell. The preferred metal is aluminum, because light weight is a consideration for the vessel. Two end caps are mechanically sealed to the respective distal ends of the metal shell tube by the process of electromagnetic pulse forming. The two end caps are made of a high strength, ductile thermoplastic. The preferred plastic is DELRIN.RTM., which is fabricated from an acetal resin. The plastic end caps are injection molded, and can include reinforcing threads. The end caps are each cylindrically shaped, and have at least one circumferential recess to accommodate the metal of the shell tube as it deforms about the end caps. The tube shrinks into the recess of the end caps, and forms a mechanical seal therewith. An O-ring seal is disposed within at least one circumferential recess of each end cap, to further the ability of the mechanical seal to hold a pressure of at least approximately 300 psi.
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Bennett Richard A.
Benoit Robert L.
Rachowitz Bernard I.
Spacht Glenn L.
Castellano Stephen
Techmatics, Inc.
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