CHAIN PETROL SAW WITH SUPPLY PUMP Russian patent published in 2017 - IPC B27B17/08 B27B17/12 

FIELD: wood industry.

SUBSTANCE: lubrication oil circuit is supplied to the saw chain by the supply pump. Pump drive comprises a first driving wheel associated with a supply pump and a second driving wheel associated with the sprocket. A second drive wheel is made to the actuator element which has a connecting portion, carrying drive connection with a form fit between the element and the drive sprocket. The connecting portion has grippers that match made in the chain sprocket gripping surfaces. The saw is adapted to replace the first sprocket to the first geometric characteristics of the second sprocket to the second geometric characteristics. At the connecting portion of the drive element, the first few grippers that correspond to the first chain sprocket, and a plurality of second jaws, which correspond to a second chain sprocket, are formed. The connecting portion of the first or second gripper adjacent to a respective first or second gripping surfaces of the first or second sprocket.

EFFECT: simplified blade design.

16 cl, 13 dwg