公开(公告)号：US20230211519A1

公开(公告)日：2023-07-06

申请号：US18093989

申请日：2023-01-06

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Robert L. Markus ,  Kegan Markwardt ,  Michael T. Newby ,  Robert J. Wong

IPC: B27B17/02 ,  B27B17/08 ,  B27B17/12 ,  B27B17/00

CPC classification number: B27B17/02 ,  B27B17/08 ,  B27B17/12 ,  B27B17/0008

Abstract: A chainsaw configured to be powered by a battery pack. The chainsaw includes a housing, a guide bar, and a power and drive assembly. The housing includes a battery interface for receiving the battery pack. The guide bar guides a cutting chain and is removably coupled to the housing. The power and drive assembly includes a motor and a gear train. The motor is disposed within the housing and is configured to be powered by the battery pack. The gear train is driven by the motor and configured to drive the cutting chain. The housing, the guide bar, and the power and drive assembly each contribute to a total weight of the chainsaw. A power output by the power and drive assembly compared to the total weight defines a power-to-weight ratio of above 150 Watts per Pound.

公开(公告)号：US20230271345A1

公开(公告)日：2023-08-31

申请号：US18141930

申请日：2023-05-01

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Jeremy R. Ebner ,  Robert L. Markus ,  Kegan Markwardt ,  Michael T. Newby ,  Robert J. Wong

IPC: B27B17/00 ,  B27B17/12 ,  B27B17/02 ,  B27B17/08

CPC classification number: B27B17/0008 ,  B27B17/12 ,  B27B17/02 ,  B27B17/086

Abstract: A chainsaw includes a housing including a handle housing portion, a motor housing portion, and a drive housing portion. The handle housing portion has a cavity extending along a longitudinal axis defining a first axis. A motor includes an output shaft having a longitudinal axis that defines a second axis. The chainsaw also includes a driven gear coupled to the output shaft, a sprocket coupled to the driven gear such that rotation of the driven gear rotates the sprocket, and a guide bar extending from the drive housing portion and having a longitudinal axis that defines a third axis of the chainsaw. The first and second axes define an included angle less than 75 degrees, the second and third axes define a second included angle between 110 degrees and 130 degrees, and the first and third axes define an external angle between 150 degrees and 170 degrees.