F - Mech Eng,Light,Heat,Weapons – 17 – C
Patent
F - Mech Eng,Light,Heat,Weapons
17
C
F17C 13/00 (2006.01) F17C 1/16 (2006.01) F17C 13/06 (2006.01)
Patent
CA 2361339
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 he 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.
L'invention porte sur un réservoir de gaz sous pression comportant: une chambre de stockage dotée d'une ouverture d'accès, un bossage polaire traversant l'ouverture d'accès, un doublage de plastique revêtant l'intérieur de la chambre et un bouchon. La doublure comporte un téton s'étendant dans le bossage polaire, se terminant par un bord annulaire, et une portion filetée intérieurement. Le bouchon comprend une tête, une tige s'étendant longitudinalement à partir d'une extrémité de la tête et dont une portion est filetée extérieurement, et un épaulement annulaire. Ledit épaulement présente une rainure circulaire où vient se loger un joint torique compressible. Lorsqu'on introduit la tige dans l'ouverture d'accès et engage son filetage dans celui du téton, on comprime le joint torique entre l'épaulement annulaire et le rebord annulaire du doublage. Le joint ainsi comprimé assure une fermeture hermétique entre le doublage et le bouchon et empêche les gaz comprimés de s'échapper par l'ouverture d'accès.
Berkley George A.
Warner Mark J.
Alliant Techsystems Inc.
Gowling Lafleur Henderson Llp
LandOfFree
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