B23D45/16

WORK MACHINE
20230201934 · 2023-06-29 · ·

Provided is a work machine with improved operatability. In a cutting tool, a guard member that is made of metal is provided inside a chip discharge passage section, and a bottom wall of the chip discharge passage section on a saw blade side is covered by the guard member. In other words, a bottom surface of the chip discharge passage section is guarded by the guard member that is made of metal. Accordingly, the guard member can prevent high-temperature metal chips from coming into direct contact with the bottom wall of the chip discharge passage section. Thus, deformation of the chip discharge passage section when chips pass through the chip discharge passage section can be suppressed. Consequently, the durability of a saw cover can be increased, and the operatability of the cutting tool can be improved.

Portable cutting machine

A suspending member, such as a tether strap or the like, may by connected to improve convenience for an operator. The function of the suspending member shall be reliably performed by clearly notifying the user when the connecting part for connecting the suspending member is damaged. A ring-shaped notification member is incorporated in a connecting part for connecting the suspending member. The suspending member is inserted into both of a connecting hole in a connecting part and a notification member so as to be connected. When an end of a handle portion breaks due to long-term use, the notification member is pulled out such that the damage of the connecting part is notified.

Portable cutting machine

A suspending member, such as a tether strap or the like, may by connected to improve convenience for an operator. The function of the suspending member shall be reliably performed by clearly notifying the user when the connecting part for connecting the suspending member is damaged. A ring-shaped notification member is incorporated in a connecting part for connecting the suspending member. The suspending member is inserted into both of a connecting hole in a connecting part and a notification member so as to be connected. When an end of a handle portion breaks due to long-term use, the notification member is pulled out such that the damage of the connecting part is notified.

Handheld work apparatus

A handheld work apparatus includes a work tool, a belt drive, a drive motor configured to drive the work tool via the belt drive, a brake unit configured to act on the belt drive, and a holding arrangement. The brake unit has a braking position and a released position and the holding arrangement is configured to hold the brake unit in the released position. The holding arrangement includes an electromagnet to which current is supplied during operation of the work apparatus.

Electric powered work machine, and method for suppressing surge voltage in electric powered work machine
11689127 · 2023-06-27 · ·

An electric powered work machine according to one aspect of to the present disclosure includes a motor. The electric powered work machine includes a first line connecting a positive electrode of a battery to the motor. The electric powered work machine includes a second line connecting a negative electrode of the battery to the motor. The electric powered work machine includes a third line connecting the first line to the second line. The electric powered work machine includes a first capacitor disposed on the third line. The electric powered work machine includes a rectifier disposed on the third line. The rectifier limits or inhibits an electric current flowing from the second line to the first line through the third line. The electric powered work machine includes a first circuit connected to the third line. The first circuit has impedance that is other than zero, and bypasses the rectifier.

Electric powered work machine, and method for suppressing surge voltage in electric powered work machine
11689127 · 2023-06-27 · ·

An electric powered work machine according to one aspect of to the present disclosure includes a motor. The electric powered work machine includes a first line connecting a positive electrode of a battery to the motor. The electric powered work machine includes a second line connecting a negative electrode of the battery to the motor. The electric powered work machine includes a third line connecting the first line to the second line. The electric powered work machine includes a first capacitor disposed on the third line. The electric powered work machine includes a rectifier disposed on the third line. The rectifier limits or inhibits an electric current flowing from the second line to the first line through the third line. The electric powered work machine includes a first circuit connected to the third line. The first circuit has impedance that is other than zero, and bypasses the rectifier.

PORTABLE CUTTING APPARATUS
20230191509 · 2023-06-22 · ·

A portable cutting apparatus includes a base, a main body and a cover both on a second side of the base. The main body is displaceable relative to the base and the cover between a first position, where a blade is entirely contained in the cover, and a second position, where the blade protrudes to a first side opposite the second side beyond the base. The cover includes a cover main body, and an auxiliary cover located in proximity to the base and movable relative to the cover main body. The main body portion and the cover main body are tiltable about a first axis located on the first side of the base. The auxiliary cover is at least partially tilted about a second axis located on the second side of a surface of the base on the first side in conjunction with the tilting of the cover main body.

PORTABLE CUTTING APPARATUS
20230191509 · 2023-06-22 · ·

A portable cutting apparatus includes a base, a main body and a cover both on a second side of the base. The main body is displaceable relative to the base and the cover between a first position, where a blade is entirely contained in the cover, and a second position, where the blade protrudes to a first side opposite the second side beyond the base. The cover includes a cover main body, and an auxiliary cover located in proximity to the base and movable relative to the cover main body. The main body portion and the cover main body are tiltable about a first axis located on the first side of the base. The auxiliary cover is at least partially tilted about a second axis located on the second side of a surface of the base on the first side in conjunction with the tilting of the cover main body.

CIRCULAR SAW WITH DRAIN FEATURE
20230198067 · 2023-06-22 ·

A portable circular saw including a housing that has a first housing side, a second housing side coupled to the second side, and a lower housing portion spanning the first housing side and the second housing side. The saw also includes a battery receptacle that is formed in the housing, and the battery receptacle extends partially into the first housing side and partially into the second housing side. The battery receptacle includes a bottom plate that is spaced apart from the lower housing portion to form an interior cavity within the housing. A drain feature extends between the bottom plate of the battery receptacle and the lower housing portion, and the drain feature defines an outlet for fluid in the battery receptacle.

CIRCULAR SAW WITH DRAIN FEATURE
20230198067 · 2023-06-22 ·

A portable circular saw including a housing that has a first housing side, a second housing side coupled to the second side, and a lower housing portion spanning the first housing side and the second housing side. The saw also includes a battery receptacle that is formed in the housing, and the battery receptacle extends partially into the first housing side and partially into the second housing side. The battery receptacle includes a bottom plate that is spaced apart from the lower housing portion to form an interior cavity within the housing. A drain feature extends between the bottom plate of the battery receptacle and the lower housing portion, and the drain feature defines an outlet for fluid in the battery receptacle.