Actuation and Valve Mechanism

摘要

The invention provides a cable drive device (10) including a linear drive member (12), and a cable drum (14) attached to a support bracket (30, 32) adapted to be affixed to a surface. The cable drum (14) has an axle (26) supported by the support bracket (30, 32) to allow rotation of the cable drum (14). The cable drum (14) has a cable (42) affixed at either end of said linear drive member (12) and tautly wrapped around the cable drum (14). The cable drum (14) is located between the ends of the linear drive member (12) to, in use, allow the linear drive member (12) to be guided through the bracket (30, 32) to move the linear drive member (12) longitudinally when the axle (26) is rotated.

主权项

1. A fluid control barrier adapted to be fitted to an end of a pipe through which fluid is contained, a frame member is mounted on said end of said pipe, a bi-foldable barrier member closes said end of said pipe, said bi-foldable barrier member having a pair of plates with a hinge along their straight edges to allow for opening and closing of said fluid control barrier, said hinge pinned to said frame member or said pipe and a pair of lifting means attached to each of said plates to allow said bi-foldable barrier member to be opened and closed.