1. Automatic by-pass channel gates

2. © clf anderson diagram only not to scale
Bypass channel gates
venturi passages keep
the gate firmly open
tidal flow
gate
hinge chamber
“squish” chamber
bypass channel
“squish” chamber
the “displacement phase” gate is self opening and self closing
it is foam filled so as to be slightly buoyant and has a thrust bearing at the top
© clf anderson diagram only not to scale

3. © clf anderson diagram only not to scale
Bypass channel gates
the inlet passage flow
pushes the gate open
tidal flow
the “displacement phase” gate is self opening and self closing
it is foam filled so as to be slightly buoyant and has a thrust bearing at the top
the gate is opened and closed by the change in tidal flow direction
© clf anderson diagram only not to scale

4. © clf anderson diagram only not to scale
Bypass channel gates
the inlet passage flow
pushes the gate open
tidal flow
the “displacement phase” gate is self opening and self closing
it is foam filled so as to be slightly buoyant and has a thrust bearing at the top
the gate is opened and closed by the change in tidal flow direction
the gate is prevented from slamming by the “squish” chamber damping action
the gate only closes fully when the “squish” chamber contents have escaped
© clf anderson diagram only not to scale