초록 ▼

This pressurized-gas storage assembly includes a pressure vessel having a gas storage chamber and access opening, a polar boss extending through the access opening, a plastic liner lining the gas storage chamber, and a fitting body. The plastic liner includes a nipple portion that extends into the p

This pressurized-gas storage assembly includes a pressure vessel having a gas storage chamber and access opening, a polar boss extending through the access opening, a plastic liner lining the gas storage chamber, and a fitting body. The plastic liner includes a nipple portion that extends into the polar boss, terminates at an annular rim, and has a screw-threaded radially inner surface region. The fitting body includes a head portion, an extension longitudinally extending from an end of the head portion and having a screw-threaded radially outer surface region, and an annular shoulder. The annular shoulder has an annular recess formed therein, with a compressible O-ring being accommodated within the annular recess. By inserting the extension through the access opening and positioning the screw-threaded radially outer surface region of the extension into mechanical engagement with the screw-threaded radially inner surface region of the nipple portion, the O-ring is compressed between the annular shoulder of the fitting body and the annular rim of the liner. As a consequence, the O-ring is compressed and a hermetic seal is established between the inner liner and the fitting body, thereby preventing escape of stored compressed gas through the access opening.

대표청구항 ▼

[ We claim:] [1.] A pressurized-gas storage assembly comprising:a pressure vessel having an inner surface and a gas storage chamber and comprising a neck region providing an access opening in fluid communication with said gas storage chamber;a liner covering said inner surface and comprising a nippl

[ We claim:] [1.] A pressurized-gas storage assembly comprising:a pressure vessel having an inner surface and a gas storage chamber and comprising a neck region providing an access opening in fluid communication with said gas storage chamber;a liner covering said inner surface and comprising a nipple portion extending into said neck region and terminating at an annular rim;a fitting body comprising a head portion, an extension extending from an end of said head portion, and an annular shoulder provided at said end of said head portion and having an inner periphery defined by said extension, said annular shoulder having an annular recess formed therein, said extension being receivable in said nipple portion both to position said annular shoulder in opposing relationship with said annular rim and to permit mechanically engagement of said extension with said nipple portion; andan O-ring receivable in said annular recess and compressible between a non-compressed state, in which said O-ring has a sufficient thickness to extend beyond said annular recess, and a compressed state,wherein positioning of said extension into mechanical engagement with said nipple portion compresses said O-ring between said annular rim and said annular shoulder into the compressed state and establishes a hermetic seal between said inner liner and said fitting body.