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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.
The drill bit on a turbodrill spins much faster than on a conventional motor drill. The result is that, though there is less torque, this is compensated for by the increased speed, which makes straighter holes, and can drill faster and easier through tougher ground materials. The process is very similar to a dental drill used by a dentist.
DeWalt – power tools; B & D acquired in 1960; Guoqiang (GQ) Tools (China) – power tools; Porter-Cable – power tools; B & D acquired in 2004 [34] /2005 [35] Oldham Saw Company – circular saw blade and wood router bit products; B & D acquired in 2004 [34] Black+Decker – acquired (via merger) in 2010; Craftsman – acquired from Sears ...
For certain types of electric motors or generators to function, the coils of the rotor must be connected to complete an electrical circuit. Originally this was accomplished by affixing a copper or brass commutator or 'slip ring' to the shaft, with springs pressing braided copper wire 'brushes' onto the slip rings or commutator which conduct the current.
Yet, the engine ran for 1 hour and 45 minutes, and generated a thrust of 480 pounds-force (2,100 N) at 13,000 rpm. Another W.U. engine reconstruction was started on 30 May 1938, but using ten combustion chambers to match the ten compressor discharge ducts. Avoiding a single large combustion chamber made the engine lighter and more compact.
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