A new structural arrangement for an ancillary cutting device for chainsaws, pertaining to the technical sector of mechanics, particularly to the sector of cutting equipment. The device is coupled to the chainsaw to adjust the thickness of the timber to be cut. The device is secured to the body of the chainsaw or directly to the blade, and comprises a tubular body with a screw thread and nut at one end, and a channel at the opposite end that limits movement of a gauge whose positioning is set using markings on the tubular body. The gauge is formed by a sleeve having a diameter slightly larger than that of the tubular body. The sleeve has a cylindrical shoulder having a through-hole with an inner thread for receiving a fastening screw, and a support rod obliquely relative to the axis thereof

A new structural arrangement for an ancillary cutting device for chainsaws, pertaining to the technical sector of mechanics, particularly to the sector of cutting equipment. The device is coupled to the chainsaw to adjust the thickness of the timber to be cut. The device is secured to the body of the chainsaw or directly to the blade, and comprises a tubular body with a screw thread and nut at one end, and a channel at the opposite end that limits movement of a gauge whose positioning is set using markings on the tubular body. The gauge is formed by a sleeve having a diameter slightly larger than that of the tubular body. The sleeve has a cylindrical shoulder having a through-hole with an inner thread for receiving a fastening screw, and a support rod obliquely relative to the axis thereof

The invention provides a handheld power tool, which comprises a handle assembly, a power mechanism connected with the handle assembly, and a working mechanism connected with the power mechanism. The power mechanism comprises a main housing, an inner housing, and a motor disposed in the inner housing. The main housing comprises a first air inlet at a side wall thereof, the inner housing comprises an opening. An airflow channel is located between the main housing and the inner housing, and in communication with the first air inlet, the opening and an inside of the inner housing. The handheld power tool of the present invention not only has good heat dissipation effect, but also has waterproof and dustproof effects, and can work in rainy days and humid areas without affecting the performance of the whole machine.

The present invention is a collapsible chainsaw. The chainsaw includes a protective housing to which a saw bar having a saw chain is rotatably mounted at one end via a notched positioning hub. The chainsaw has two configurations. These configurations are the open or cutting configuration, which positions the saw bar straight out from the housing or main body of the chainsaw, and a collapsed or closed configuration, which positions the saw bar parallel to the housing.

The present invention provides a chain saw includes a housing, the housing including a first housing, a second housing, and a receiving cavity formed by the first housing and the second housing; a cutter including a blade chain and a blade bar for supporting the blade chain, the cutter being mounted on the housing; a power assembly, the power assembly comprising a drive unit for driving the cutter and a power supply unit for supplying power to the drive unit; a front handle connected to the second housing and surrounding the first housing, the front handle comprising a grip portion, a first and second fixing parts which are located at two ends of the grip portion, the first fixing part abutting on the side wall of the second housing, and the second fixing part being located at the bottom of the housing and connecting with the second housing.

The present invention provides a chain saw includes a housing, the housing including a first housing, a second housing, and a receiving cavity formed by the first housing and the second housing; a cutter including a blade chain and a blade bar for supporting the blade chain, the cutter being mounted on the housing; a power assembly, the power assembly comprising a drive unit for driving the cutter and a power supply unit for supplying power to the drive unit; a front handle connected to the second housing and surrounding the first housing, the front handle comprising a grip portion, a first and second fixing parts which are located at two ends of the grip portion, the first fixing part abutting on the side wall of the second housing, and the second fixing part being located at the bottom of the housing and connecting with the second housing.

A working machine may include a working unit having a longitudinal direction in a front-back direction, an electric motor configured to drive the working unit, a control unit configured to control the electric motor, a housing including a housing body and a grip, wherein the housing body holds the working unit and houses the electric motor and the control unit, and the grip extends from the housing body and is configured to be grasped by a user's hand, a battery pack attached to the housing and configured to supply electric power to the electric motor via the control unit, and a trigger lever disposed on the grip and configured to operate the electric motor by being pulled toward the grip by a finger of the user. A front end of the control unit may be disposed rearward of a rear end of the trigger lever.

A chainsaw which has a low profile chain cover and a chain bar tightening clutch system. The chain bar tightening clutch system can have a bar tightening knob which drives a clutch which governs the amount of pressure applied to the chain bar by operating the bar tightening knob. The chainsaw can have a chain bar tensioning system which can have a tensioning drive member in an offset position from the tensioning post which positions the tensioning post to achieve a chain tension and compact chainsaw design. The chainsaw can also have an oil cap with a lock channel having a detent with produces a sound when moved from a disengaged to an engage position with an oil reservoir.

A chainsaw which has a low profile chain cover and a chain bar tightening clutch system. The chain bar tightening clutch system can have a bar tightening knob which drives a clutch which governs the amount of pressure applied to the chain bar by operating the bar tightening knob. The chainsaw can have a chain bar tensioning system which can have a tensioning drive member in an offset position from the tensioning post which positions the tensioning post to achieve a chain tension and compact chainsaw design. The chainsaw can also have an oil cap with a lock channel having a detent with produces a sound when moved from a disengaged to an engage position with an oil reservoir.

A method assists during felling of a tree. The method includes the steps of: providing a property of the tree and/or a property of an environment of the tree; obtaining felling information related to an ideal felling direction of the tree based on the provided property; and outputting the obtained felling information.