B - Operations – Transporting – 65 – D
Patent
B - Operations, Transporting
65
D
206/11
B65D 35/46 (2006.01) B60K 15/04 (2006.01) B65D 51/16 (2006.01) B65D 55/00 (2006.01)
Patent
CA 1070644
ABSTRACT OF THE DISCLOSURE A cap for closing a chamber having a filler neck formed to provide an internal thread and a peripherally extending lip at its mouth, the cap comprising a housing which has a longitudinal axis and axially spaced outer and inner end portions and which is formed to provide, at its outer end portion, a radially outwardly extending flange and, extending axially inwardly from the flange, a shank with a mating external thread. A concentric sealing ring is disposed adjacent the flange for sealing engagement with the lip, and a shell covers at least the outer portion of the housing. The flange provides at least one resilient finger having a lug at its distal end, and the shell provides at least one pocket for receiving the lug and providing a torque limited driving connection in one sense of relative rotation between the shell and the housing. This pocket is formed with camming surface at its trailing end as the shell is turned to advance the shank axially in- wardly and an abrupt surface at its leading end. The camming surface is effective to cam the lug out of the pocket when the limit of the torque limited driving connection is exceeded as the torque resistance to rotation of the housing in the said one sense exceeds a predetermined level.
186273
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