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2. Hydraulic rescue tool - Wikipedia

   en.wikipedia.org/wiki/Hydraulic_rescue_tool

   The tools operate on the basis of the hydraulic fluid pressure of up to 720 bars (10,400 psi; 72 MPa), which must be provided from a power source. At present, there are three different means of generating pressure. The most commonly used source is a separate power unit, small petrol (gasoline) engine connected to a hydraulic pump.

3. Power tool - Wikipedia

   en.wikipedia.org/wiki/Power_tool

   A power tool is a tool that is actuated by an additional power source and mechanism other than the solely manual labor used with hand tools. The most common types of power tools use electric motors. Internal combustion engines and compressed air are also commonly used. Tools directly driven by animal power are not generally considered power tools.

4. Jack (device) - Wikipedia

   en.wikipedia.org/wiki/Jack_(device)

   The working principle of a hydraulic jack. In 1838 William Joseph Curtis filed a British patent for a hydraulic jack. [4] In 1851, inventor Richard Dudgeon was granted a patent for a "portable hydraulic press" – the hydraulic jack, a jack which proved to be vastly superior to the screw jacks in use at the time. [5]

5. The Best Portable Power Stations for Outages and Outings - AOL

   www.aol.com/best-portable-power-stations-outages...

   The Best Portable Power Stations. Best Overall: EcoFlow Delta Pro. Best Mix of Size and Power: Jackery Explorer 1000 v2. Most Versatile: Goal Zero Yeti 1500X. Best for Mobile Device Charging ...

6. Fluid power - Wikipedia

   en.wikipedia.org/wiki/Fluid_power

   A fluid power system has a pump driven by a prime mover (such as an electric motor or internal combustion engine) that converts mechanical energy into fluid energy, Pressurized fluid is controlled and directed by valves into an actuator device such as a hydraulic cylinder or pneumatic cylinder, to provide linear motion, or a hydraulic motor or pneumatic motor, to provide rotary motion or torque.

7. Walmart, other US retailers import fewer Christmas goods ...

   www.aol.com/news/walmart-other-us-retailers...

   Santa Claus is not delivering as many Christmas trees, toys and decorations to the United States this year as in recent years, import data shows, with retailers including Walmart bringing in less ...