F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
137/143
F16L 55/05 (2006.01)
Patent
CA 1028923
A water and air impermeable elastomeric dia- phragm bellows sleeve, mandrel formed or mold- ed with longitudinal corrugations between cylindrical end portions, with the corrugated length circumferentially con- tracted by temporary binding, is inserted into a metal or plastic shell tube; and the sleeve end portions are expand- ed and sealingly secured to the surrounding shell and regions by respective molded elastomer retainers or adapt- ers having a ribbed sleeve portion urging the respective end portion to sealing engagement, in smaller sizes, against the shell, and in larger sixes against the inner surface of an integral adapter collar portion in turn thereby urged into sealing engagement against the shell; the shell ends being closed by adherently bonded pipe-con- necting caps or by one blind cap and a pipe-connecting adapter cap, to form respectively an "in-line" or an "on-line" shook absorber unit, after the gas-confining chamber defined between shell and sleeve is pressurized with air needle-injected at a through-shell elastomeric charging plug. Line service water pressure expands and ruptures the binding to free the corrugated length.
Blendermann Louis
Dirks Richard D.
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