A handheld battery powered chainsaw with a centrifugal clutch

Abstract

A handheld battery-powered chainsaw comprises an electric motor (22); and a transmission arrangement (28) coupled to the electric motor (22), the transmission arrangement (28) comprising a saw chain drive sprocket (32) configured to mesh with and drive a saw chain, wherein the transmission arrangement (28) further comprises a centrifugal clutch comprising a drive member (36) configured to receive rotary power from the electric motor (22), and a clutch drum (38) configured to variably engage with the drive member (36) to be rotated by the drive member (36) about a rotation axis (A) and thereby transmit rotary power to the saw chain (16). The transmission arrangement (28) further comprises a brake arrangement comprising a brake drum (40a) rotationally locked, with regard to the rotation axis (A), to the clutch drum (38) via a first keyed interface (44).

Dependencies are inferred from the claim text.