Extract of energy from the sea

Fan

Filter and muffler for a vacuum pump

Fish pump

Flash jet coolant circulation system

Float operated devices

Float operated pump including diaphragm valve assembly with blee

Floating power generation assemblies and methods

Flow amplifying pump apparatus

Flow control apparatus for a water powered sump pump

Flow control valve for a pump for conveying a medium

Fluid apparatus and methods, as for inflating inflatable structu

Fluid bearing pad arrangement for liquid ring pump systems

Fluid controlled gas lift pump

Fluid delivery system with a jet pump booster and means to maint

Fluid dynamic pump

Fluid exchange pump

Fluid flow amplifier

Fluid jet compressor nozzle arrangement

Fluid jet ejector and ejection method