POWER OPERATED TOOL FOR MAKING

Brand Owner Address Description
DRILL-N-TAP Cutting Tools, Inc. 304 Meyer Road Bensenville IL 60106 Power-Operated Tool for Making of Hole and Producing Internal Thread in One Operation;
 

Where the owner name is not linked, that owner no longer owns the brand

    
Technical Examples
  1. A DC power source unit supplies a DC voltage to a power tool through an adapter when a power switch of the tool is turned ON and also charges a battery pack used as an alternative power source of the tool when the power tool is not operated. In order to prevent a rush current from flowing in a switch interposed between a switching power source circuit and the battery pack when charging the battery pack is commenced, the switch is rendered OFF when the output voltage from the switching power source is greater than the battery voltage. Charging the battery is started upon once lowering the output of the switching power source to a level lower than the battery voltage.