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2. Jackknifing - Wikipedia

   en.wikipedia.org/wiki/Jackknifing

   When a trailer skids to one side, this is known as a trailer swing or trailer slew. This can occur on a slippery road surface, often where there is a cant . This is not the same as jackknifing and is not as serious, as the trailer will move back into line as the vehicle continues forwards.

3. Harbor Freight Tools - Wikipedia

   en.wikipedia.org/wiki/Harbor_Freight_Tools

   Harbor Freight Tools won a declassification of the class action; that is, the court found that all the individual situations were not similar enough to be judged as a single class, and that their claims would require an individual-by-individual inquiry, so the case could not be handled on a class basis.

4. 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 ...

5. Blackhawk (tools) - Wikipedia

   en.wikipedia.org/wiki/Blackhawk_(tools)

   Blackhawk also produced Blackhawk Jack brand floor jacks under the Blackhawk Mfg. Co. name including a handy 1-1/2 Ton heavy steel wheeled model. [10] In the early 1950s, the Blackhawk hand tool line was acquired by the New Britain Machine Company. In the 1970s, Litton Industries purchased New Britain. In the 1980s, National Hand Tool acquired ...

6. 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.

7. Hydraulic rescue tool - Wikipedia

   en.wikipedia.org/wiki/Hydraulic_rescue_tool

   Hydraulic rescue tools, also known as jaws of life, are used by emergency rescue personnel to assist in the extrication of victims involved in vehicle accidents, as well as other rescues in small spaces. These tools include cutters, spreaders, and rams. Such devices were first used in 1963 as a tool to free race car drivers from their vehicles ...