Expandable band and locking mechanism

Details Expandable band and locking mechanism Expandable band and locking mechanism

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 55/163 (2006.01)

Patent

CA 2423369

The expandable band is used to secure a sealing element within a generally cylindrical structure, such as a pipe or manhole, or other round hole. The expandable band includes a band body having a first band end portion and a second band end portion. A plurality of slots are disposed in the first band end portion, and a locking member extends from the second band end portion. The locking member is an integral element of the second band end portion and includes a tab for extending through the second band end portion and into one of the plurality of slots to lock the expandable band at the desired diameter. The locking member may also include at least one rib or protrusion. When the band is expanded, the tab is disengaged from the slots and slides over the slots, allowing the first and second band end portions to more relative to one another. At the desired diameter, the tab engages one of the slots to lock the band at the desired diameter. In practice, the sealing member provides a resilient backing against the locking member thus securing the expandable band and providing the desired seal.

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