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2. Jackhammer - Wikipedia

   en.wikipedia.org/wiki/Jackhammer

   The first American "percussion drill" was made in 1848, and patented in 1849 by Jonathan J. Couch of Philadelphia, Pennsylvania. [7] In that drill, the drill bit passed through the piston of a steam engine. The piston snagged the drill bit and hurled it against the rock face. It was an experimental model.

3. Jack (device) - Wikipedia

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

   A 2.5-ton house jack that stands 24 inches from top to bottom fully threaded out. A house jack, also called a screw jack, is a mechanical device primarily used to lift buildings from their foundations for repairs or relocation. A series of jacks is used and then wood cribbing temporarily supports the structure. This process is repeated until ...

4. Strand jack - Wikipedia

   en.wikipedia.org/wiki/Strand_jack

   Animation of a strand jack. Strand jacks can be used horizontally for pulling objects and structures, and are widely used in the oil and gas industry for skidded loadouts. Oil rigs of 38,000 t have been moved in this way from the place of construction on to a barge. Since multiple jacks can be operated simultaneously by hydraulic controllers ...

5. Trailer stability assist - Wikipedia

   en.wikipedia.org/wiki/Trailer_stability_assist

   Trailer Stability Assist (TSA), also known as Electronic Trailer Sway Control, [1] is designed to control individual wheel slip to correct potential trailer swing before there is an accident. [2] Although similar to Electronic Stability Control (ESC), TSA is programmed differently and is designed to detect yaw in the tow-vehicle and take ...

6. Premium Tech Support with Assist by AOL | AOL Products

   www.aol.com/products/tech-support/assist

   Assist by AOL is a separate service which provides support that is not specific to your AOL account, but for nearly any device in your home, including computers, mobile phones, printers, routers ...

7. Directional boring - Wikipedia

   en.wikipedia.org/wiki/Directional_boring

   Directional boring machine. Directional boring, also referred to as horizontal directional drilling (HDD), is a minimal impact trenchless method of installing underground utilities such as pipe, conduit, or cables in a relatively shallow arc or radius along a prescribed underground path using a surface-launched drilling rig.