MULTI-SPEED GEAR TRAIN FOR POWER TOOL
A power tool, such as a cordless power ratchet, with a multi-speed gear train is described. A gearbox may use a planetary gearset with a shifting ring gear coupled with a set of compound gears that allows the user to change the output speed of the tool by altering the total gear ratio of the gearbox...
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Format: | Patent |
Sprache: | eng ; fre |
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Zusammenfassung: | A power tool, such as a cordless power ratchet, with a multi-speed gear train is described. A gearbox may use a planetary gearset with a shifting ring gear coupled with a set of compound gears that allows the user to change the output speed of the tool by altering the total gear ratio of the gearbox. A first stage may include a planetary gearset with a shifting ring gear. A second stage may include a set of compound gears whose output connects to the tool's driving mechanism. The exemplary gearbox may allow the user more control over the output during tool operation. A cordless ratchet with a multi-speed geartrain may allow the user to generate high levels of torque to remove a fastener (i.e., making the tool operate at a lower speed), and allow the user to remove the fastener quicker by increasing the speed of the tool. |
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