Want a more powerful, smaller, lighter power tool with better battery life? A new motor design from the Milwaukee Tool Corporation in Wisconsin uses a brushless direct current motor design for making these improvements possible.
Image source: United States Patent and Trademark Office
Want to learn more about this invention? See the following information from the United States Patent and Trademark Office, www.uspto.gov
ABSTRACT
A cordless , hand - held power tool , such as a hammer drill / driver , an impact driver , an impact wrench , etc. , that includes a brushless direct current ( “ BLDC ” ) motor . Each of the hand - held power tool includes a removable and rechargeable battery pack , electronics , and a BLDC motor that have been designed and balanced to produce high performance - capable ( e.g. , high - power , high - current , high torque ) hand - held power tool . The hand - held power tool is capable of delivering high instantaneous ( i.e. , short dura tion ) current to the BLDC motor for short - duration high power operation and high continuous ( i.e. , long duration ) current to the BLDC motor for long duration high power operation . Additionally , the short and long duration power is capable of being provided in aa smaller ( in size ) and lighter ( in weight ) package than any hand - held power tool before it .
HIGH - POWER CORDLESS , HAND - HELD POWER TOOL INCLUDING A BRUSHLESS DIRECT CURRENT MOTOR
Applicant : MILWAUKEE ELECTRIC TOOL CORPORATION , Brookfield , WI ( US ) ( 56 ) References Cited
Inventors : Brandon L. Verbrugge , Brookfield , WI ( US ) ; Matthew J. Mergener , Germantown , WI ( US ) ; Matthew P. Wycklendt , Delafield , WI ( US ) ; Jeffrey C. Hessenberger , Neosho , WI ( US ) ; Dennis J. Grzybowski , New Berlin , WI ( US )
Assignee : MILWAUKEE ELECTRIC TOOL DE CORPORATION , Brookfield , WI ( US )
Filed : Oct. 12 , 2021