Band with slotted wedge cams

Pipe joints or couplings – Flexible joint – rigid members – Resilient sleeve type

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Details

285230, 277207A, 24268, F16L 500, F16L 4108

Patent

active

054314593

ABSTRACT:
A band assembly for effecting a seal particularly adapted for use in establishing a joint between a sewer pipe and a reinforced concrete manhole riser. The seal is affected by a tapered elastomeric tubular connector boot and a clamping band member with an expansion mechanism. Wedge followers are loosely captured in the end sections of the clamping band and lie along a circumferential center line on the band. Driving wedges extend along an axis transverse to the circumferential center line. The wedge followers and wedge drivers both have divergent edge sections that interengage and slide over one another as the driving wedges are pulled together by a clamping mechanism comprising, in a simplest form, a nut and bolt. As the driving wedges move toward the circumferential center line, they displace the wedge followers. The wedge followers engage the end portions of the clamping band and force it and the connector boot into a sealing relationship with the surrounding manhole riser.

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patent: 4927189 (1990-05-01), Burkit
patent: 5024404 (1991-06-01), Ballard
patent: 5029907 (1991-07-01), Gundy

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