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2. Jackhammer - Wikipedia

   en.wikipedia.org/wiki/Jackhammer

   A jackhammer (pneumatic drill or demolition hammer in British English) is a pneumatic or electro-mechanical tool that combines a hammer directly with a chisel. It was invented by William McReavy, who then sold the patent to Charles Brady King. [1] Hand-held jackhammers are generally powered by compressed air, but some are also powered by ...

3. Rotary hammer - Wikipedia

   en.wikipedia.org/wiki/Rotary_hammer

   The pistons do not actually touch, but the air pressure in the EP cylinder allows for a much more efficient transfer of hammering energy than springs in the cam-action style hammer drills. The majority of modern rotary hammers as well as all electric-powered chipping guns or jack-hammers all use this EP technology.

4. Breaker (hydraulic) - Wikipedia

   en.wikipedia.org/wiki/Breaker_(hydraulic)

   Breakers are often referred to as "hammers", "peckers", "hoe rams" or "hoe rammers". These terms are popular and commonly used amongst construction / demolition workers. [ 1 ] [ 2 ] The first hydraulic breaker, Hydraulikhammer HM 400, was invented in 1967 by German company Krupp (today German company Atlas Copco ) in Essen .

5. Hammer drill - Wikipedia

   en.wikipedia.org/wiki/Hammer_drill

   German company Bosch produced the first "Bosch-Hammer" around 1932 in mass production. The US company Milwaukee Electric Tool Corporation states that in 1935, it was selling a lightweight 1 ⁄ 4 in (6.4 mm) electric hammer drill (cam-action). [15] Hand-cranked percussion drills were made in the UK in the mid-twentieth century. [16]

6. Hilti - Wikipedia

   en.wikipedia.org/wiki/Hilti

   It concentrates mainly on anchoring systems, fire protection systems, installation systems, measuring and detection tools (such as laser levels, range meters and line lasers), power tools (such as hammer drills, demolition hammers, diamond drills, cordless electric drills, heavy angle drills, power saws) and related software and services. [2]

7. Down-the-hole drill - Wikipedia

   en.wikipedia.org/wiki/Down-The-Hole_Drill

   There are three types of hammers, depending on the actuation fluid: Air hammers have first been developed to drill hard rock but are limited to shallow holes (< 200m); Water hammers have been developed by a swedish company called Wassara. [1] A lost water flow (between 55 and 744 L/min, depending on the hammer size) is necessary to actuate the ...