Patent ID: 8950073
Filing Date: 2015-02-10
Classification: B23D,B27B

Abstract:
1. A chain sharpening device arranged to sharpen a saw chain moving along a periphery of a guide bar of a chainsaw, the chain sharpening device comprising: a housing, arranged to be detachably mounted on the guide bar such that it encloses a portion of the guide bar and a portion of the saw chain, a sharpening element comprising a grinding portion, wherein the sharpening element is at least partially received within the housing, and wherein the sharpening element is selectively displaceable relative to the housing between a resting state and a sharpening state, such that, when the housing is mounted on the guide bar, around the periphery of which the chain is arranged, the grinding portion abuts on a portion of the saw chain in the sharpening state, and, the grinding portion is spaced away from the saw chain in the resting state, an actuator, selectively displaceable between an inactivated state and an activated state, wherein the actuator is connected to the sharpening element and arranged to selectively bring the sharpening element from the resting state to the sharpening state, a first biasing member operatively connected to the actuator and arranged to bias the actuator towards its inactivated state, wherein the chain sharpening device furthermore comprises a second biasing member, operatively connected to the sharpening element and arranged to enable relative movement between the actuator and the sharpening element when the sharpening element is in the sharpening state, so as to delimit a force with which the sharpening element can be pressed towards the saw chain.