### device | mechanism | mechanical device | compressor:

Air compressor
* All air compressors discharge some amount of oil in the air as it is compressed.
* Many air compressors use standard motors as the prime driver.
* are compressors.
* provides pneumatic energy for air and water guns.

Coupler
* are parts
  - vital components used to split and join light signals in optical fibre networks
* means a device for locking together the tubes of a tube and coupler scaffold.
* mechanical device

Pantograph
* are mechanical devices
  - patented designs in the background pattern of checks
* easily adapt to various heights of the overhead wires by partly folding.
+ Pantograph (rail): Rail technologies :: Tram technology
  * Pantographs easily adapt to various heights of the overhead wires by partly folding. The tram line pictured here ran in Vienna.

### device | mechanism | mechanical device:

Pump
* Many pumps impart shearing forces which can change the effective viscosity of the fluid
  - operate on the simple principle of pushing and sucking
* Most pumps have an automatic device which varies the point of commencement of injection.
* Some pumps require a great deal of energy to get a decent air pressure.
* are also a more flexible way to control diabetes
  - driven by electric motors, steam turbines, or internal combustion engines
  - electronically programmable, volumetrically accurate, ambulatory infusion pumps
  - located in boats
  - machines
* are mechanical devices that change pressure at a given flow
  - part of fuel systems
  - shoes
  - solid objects
  - the heart beat of a functional aquatic system
  - used throughout society for a variety of purposes
* can burn out, and lightening can cause an electrical spike that destroys a pump.
* catalyze transport of ions or complex organic molecules against their thermodynamic gradients.
* mediate active transport, and channels are involved with passive transport.
* move only a few hundred ions per second.
* provide strong, broadband coherent energy.
* use up energy and pump ions through the membrane in a single direction.

### device | mechanism | mechanical device | pump:

Breast pump
* Most breast pumps are electric vacuum ones.
* are a food aid
  - great for maintaining milk supply during separation of mother and baby
  - personal care items
  - single user products
* can be either battery, hand or electrically operated.

Calcium pump
* establish a large concentration gradient of calcium between the lumen and the cytosol.
* serve to move the calcium.

Centrifugal pump
* are also very limited in the fluid viscosity they can handle
  - good for pumping medium to large volumes of water
* can usually handle up to about five percent by volume of air.
* have high flow rates with low suction.

Peristaltic pump
* are also very useful for the in-line filtration of groundwater samples.
* can accurately meter very low flows down to fractions of a milliliter.
* have a variety of medical applications.

Rotary pump
* are positive displacement of the fixed displacement type.
* find wide use for viscous liquids.

Solar pump
* Most solar pumps use centrifugal impellers, requiring much more power
* are a cost effective and low maintenance solution to water pumping needs
  - unique way to harvest the sun's energy for a power source
* eliminate the constant expenses of engine power.
* operate anywhere that the sun shines, and the longer it shines, the more they produce.

Submersible pump
* Submersible Pumps are lighter weight portable pumps that are used to drain low lying areas.
* are also widely used to handle suspended solids effectively and efficiently.
* operate at lower water pressures.

### device | mechanism | mechanical device | pump | suction pump:

Sump pump
* come in different sizes.
* suction pump
* tend to use a lot of power.