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2. Lego pneumatics - Wikipedia

   en.wikipedia.org/wiki/Lego_pneumatics

   The Generation 2 cylinders have 2 inputs (and come in studded, studless, and small versions), and work on pressure in both directions. They allow pushing and pulling, depending on which input air is pumped into. The Generation 2 cylinders also have bright metal rods so that they more closely resemble real pneumatic/hydraulic cylinders.

3. Linear actuator - Wikipedia

   en.wikipedia.org/wiki/Linear_actuator

   Hydraulic actuators or hydraulic cylinders typically involve a hollow cylinder having a piston inserted in it. An unbalanced pressure applied to the piston generates a force that can move an external object. Since liquids are nearly incompressible, a hydraulic cylinder can provide controlled precise linear displacement of the piston. The ...

4. BigDog - Wikipedia

   en.wikipedia.org/wiki/BigDog

   BigDog is powered by a small two-stroke, one-cylinder, 15-brake-horsepower (11 kW) engine operating at over 9.000 RPM. The engine drives a hydraulic pump, which in turn drives the hydraulic leg actuators. Each leg has four actuators (two for the hip joint, and two each for the knee and ankle joints), for a total of 16.

5. Hydraulic cylinder - Wikipedia

   en.wikipedia.org/wiki/Hydraulic_cylinder

   A hydraulic cylinder is the actuator or "motor" side of this system. The "generator" side of the hydraulic system is the hydraulic pump which delivers a fixed or regulated flow of oil to the hydraulic cylinder, to move the piston. There are three types of pump widely used: hydraulic hand pump, hydraulic air pump, and hydraulic electric pump.

6. Actuator - Wikipedia

   en.wikipedia.org/wiki/Actuator

   In the electric, hydraulic, and pneumatic sense, it is a form of automation or automatic control. The displacement achieved is commonly linear or rotational, as exemplified by linear motors and rotary motors, respectively. Rotary motion is more natural for small machines making large displacements.

7. BuilderComs is one Marine’s simple but effective construction ...

   www.aol.com/lifestyle/buildercoms-is-one-marines...

   Its features include dedicated messaging channels, organized document sharing, real-time updates and team-collaboration tools. BuilderComs was born out of a problem Nussbaum experienced in ...