Patent ID: 9656336
Date: 2017-05-23
CPC Classifications: B23B,B23D,B23Q,B24B,B25F,B27B,B28D,H02K,H02P,Y10T

Claim:
1. An electric power saw comprising: a rotatable saw structure a rear handle with a switch control a front handle a drive unit for rotating the saw structure, the drive unit comprising: a saw structure drive arrangement to which the saw structure is attachable a transmission for driving the saw drive arrangement an electric motor for driving the transmission a support structure for holding the saw structure drive arrangement, the transmission and the electric motor, and a fluid control unit arranged to regulate and distribute a fluid through a plurality of conduits, wherein the front handle and the rear handle are directly connected to each other to form a handle unit, which is resiliently connected to the drive unit, so that vibrations from the saw structure and drive unit are reduced in the handle unit, and the power saw includes a cooling fluid system comprising: at least one the cooling path in the motor, having an inlet for connecting to a fluid source and an outlet, said cooling path running within a side wall of a motor housing that is parallel to a rotor axis of the motor, wherein the motor housing comprises an inner tubular part and an outer tubular part, wherein the cooling path is disposed between the inner tubular part and the outer tubular part, wherein the rear handle further includes a trigger lock opposite to the switch control, the trigger lock activating the switch control when the trigger lock is actuated, the trigger lock further opening an inlet valve of the fluid control unit when being actuated and returning the inlet valve to a closed position when the trigger lock is not actuated, and wherein the fluid control unit includes a transfer conduit which connects to the outlet and includes a fluid valve configured to direct fluid from the motor to a tool conduit leading to at least one nozzle at the rotatable saw structure and/or to a return conduit to discard or return a remaining flow to the fluid source.