The fluid injector includes a base, a first through hole, a fluid actuator, a passivation layer, and a thick hydrophobic film. The base includes a chamber and a surface. The first through hole communicates with the chamber, and is disposed in the base. The fluid actuator is disposed on the surface near the first through hole, and is located outside the chamber. The passivation layer is disposed on the surface. The thick hydrophobic film formed of a crosslink defines a second through hole, and is...

A fluid pump includes a housing, a drive source, a rotary unit and a pumping mechanism. The drive source is accommodated in the housing and includes a rotary member for rotation. The rotary unit includes the rotary member and a rotary shaft, which is operatively connected to the rotary member for rotation. The rotary unit forming an engaging portion for engaging with a maintenance tool which is prepared outside the housing. The pumping mechanism is placed in the housing and is operated in accord...

A fluid squeegee comprises nozzles in the squeegee head for spraying a fluid, such as water, onto a surface to be cleaned and a squeegee blade on the squeegee head for clearing away the fluid from the surface. A molded unit for the squeegee head includes a channel shaped mounting plate having a web portion between a lower flange portion and an upper flange portion. A squeegee blade is adapted to be mounted to the lower flange portion and nozzles are adapted to be mounted in the mounting plate or...

A fluid machine has a compressor device for compressing refrigerant of a refrigerating cycle for an automotive vehicle, an electric rotating device operating as an electric motor for generating a rotational driving force to drive the compressor device or operating as an electric power generator, an expansion device for collecting waste heat from an engine and generating a rotational driving force to drive the electric rotating device and/or the compressor device, and a switching device for conne...

In a fluid system for a gas turbine engine, oil is supplied from an oil tank (10) by a constant displacement pump (12) to lubricate engine components (18). The oil is supplied to the components (18) via a heat exchanger (16) in which oil and fuel are placed in direct heat exchange relationship.The flow of oil to the components (18) is controlled by recirculating a proportion of the oil flow through a bypass (20). The bypass (20) regulates the flow of oil to the components (18) so that the amount...

A pumping system 10 provides a physiological pulsatile flow and includes controller 121, a pump drive head 50 coupled to a motor 12 and a fluid housing 52 having at least one port 60. The port 60 includes a ball valve retainer region 69, a valve seat 73, and an occluder ball 71 disposed in the ball valve retainer region 69. During operation, the motor 12 forces the fluid in and out the fluid housing 52 and causes the occluder ball 71 to move from a first position whereby the fluid cannot pass th...

A packer fluid is provided for use with a wellbore fluid in an annulus or casing bore, having an aqueous portion which contains additives for preventing corrosion, microbiological activity, salt and scale deposition, and an environmentally-acceptable capping fluid which resides at a top of the wellbore to act as freeze protection and as thermal insulation in a the frost penetration layer. The additives in the packer fluid are particularly selected to exist in the aqueous additive fluid and in th...

An actuator responsive to fluid signals to retract and extend a piston. The actuator includes a cylinder and a pressure piston carried inside the cylinder. Also included is a shaft, and a rod connected to the pressure piston. The actuator further includes a first port for receiving a fluid pressure to move the pressure piston to a first position. The actuator also has a locking mechanism. The locking mechanism has a first and second surface, and both surfaces are movable in response to the fluid...

A fluid dispenser (100; 200; 300; 400) for dispensing a fluid in liquid or in powder form, the dispenser including a reservoir (12) serving to contain fluid, and a dispensing orifice (114; 214; 314; 414) via which the fluid is dispensed. The reservoir (12) having an actuating wall (111; 211; 311; 411) and a backing wall (112; 212; 312; 412), the walls be adapted to be brought towards each other by elastic deformation to reduce the volume of the reservoir, and thus to deliver fluid through the di...

A fluid dispenser for germ-free fluid is described incorporating at least one material being capable of interacting via an oligodynamically active substance. The dispenser includes a metering pump and inlet and outlet valves. The fluid coming into contact with at least one oligodynamically active substance is present in the region of the outlet valve, of the inlet thereto and/or the outlet therefrom.