Patent ID: 7644959
Filing Date: 2010-01-12
Classification: G02B,H02G

Abstract:
1. A tube coupling for connection to a conduit through which a cable may pass, the coupling comprising: a coupling body including a throughway, the throughway including: a first locking device in the first open end of the throughway, the first locking device locking the conduit in the coupling body when the conduit is advanced into the throughway; and an annular flexible seal having an inner surface and an outer surface that extend between a first end face and an opposing second end face, the inner surface bounding a passage extending through the seal, the seal being movable between a first position in which an annular section of the seal is disposed within the throughway but outside of the reduced diameter section and in which the diameter of the inner surface of the seal is at least as large as the diameter of the reduced diameter section of the throughway, and a second position in which when the conduit is advanced into the throughway, the conduit presses the seal into the reduced diameter section of the throughway so that at least a portion of the outer surface of the seal is radially inwardly constricted within the reduced diameter section, the resulting compression of the seal in said second position forcing the annular section of the seal into sealing engagement with the cable when the cable extends along the throughway.