公开(公告)号：US11852157B2

公开(公告)日：2023-12-26

申请号：US18153445

申请日：2023-01-12

申请人： YAMABIKO CORPORATION

发明人： Kenji Suzuki ,  Satsuki Yuzuki

IPC分类号： F04D29/28 ,  A01G20/47

CPC分类号： F04D29/281 ,  A01G20/47

摘要： The present invention provides a blower with reduced noise. The blower comprises a blower main body incorporating a centrifugal fan. The blower main body is configured to suck air from both sides of the blower main body by rotation of the centrifugal fan. The centrifugal fan includes a support plate having a rotation center and a plurality of blades provided on each of a first surface and a second surface of the support plate. A position of at least part of the plurality of blades on the first surface and a position of at least part of the plurality of blades on the second surface are misaligned in a circumferential direction, and/or a number of the plurality of blades on the first surface differs from a number of the plurality of blades on the second surface.

公开(公告)号：US11701769B2

公开(公告)日：2023-07-18

申请号：US16992573

申请日：2020-08-13

申请人： Yamabiko Corporation

发明人： Hisato Osawa ,  Takeshi Maeno ,  Satsuki Yuzuki ,  Noriyuki Takeuchi

IPC分类号： B25F5/00 ,  B25F5/02 ,  B01D46/00 ,  B27B17/00

CPC分类号： B25F5/008 ,  B01D46/0005 ,  B25F5/02 ,  B27B17/0008

摘要： A chainsaw (electric working tool) includes a body case; a cutting part (working implement); and a motor, wherein the motor is mounted in a cooling route in the body case; an intake communicating with the cooling route is opened on the body case; an air filter is housed between the intake and the cooling route; the body case has a filter insertion/extraction hole through which the air filter can be inserted and removed; the intake is opened on the outer surface of the body case; and the filter insertion/extraction hole is arranged at a portion other than that of the intake so that the motor can be efficiently cooled, dust hardly enters the cooling route, and maintenance can be easily performed.

公开(公告)号：US20210046632A1

公开(公告)日：2021-02-18

申请号：US16993213

申请日：2020-08-13

申请人： Yamabiko Corporation

发明人： Hisato Osawa ,  Takeshi Maeno ,  Satsuki Yuzuki ,  Noriyuki Takeuchi

IPC分类号： B25F5/00 ,  B27B17/00 ,  B01D46/00

摘要： A chainsaw (electric working tool) includes a body case, a cutting part (working implement), and a motor, wherein the motor is mounted in a motor case disposed in a cooling route; an intake communicating with the cooling route is opened on the body case and communicates through the retention chamber with the cooling route; an air filter is inserted into the body case and arranged adjacent to the intake; the body case has a filter insertion/extraction hole opened thereon and the hole communicates with the retention chamber, through which hole the air filter is attachable to and removable from the retention chamber and be a cover for it.

公开(公告)号：US20210046631A1

公开(公告)日：2021-02-18

申请号：US16992573

申请日：2020-08-13

申请人： Yamabiko Corporation

发明人： Hisato OSAWA ,  Takeshi Maeno ,  Satsuki Yuzuki ,  Noriyuki Takeuchi

IPC分类号： B25F5/00 ,  B25F5/02 ,  B01D46/00

摘要： A chainsaw (electric working tool) includes a body case; a cutting part (working implement); and a motor, wherein the motor is mounted in a cooling route in the body case; an intake communicating with the cooling route is opened on the body case; an air filter is housed between the intake and the cooling route; the body case has a filter insertion/extraction hole through which the air filter can be inserted and removed; the intake is opened on the outer surface of the body case; and the filter insertion/extraction hole is arranged at a portion other than that of the intake so that the motor can be efficiently cooled, dust hardly enters the cooling route, and maintenance can be easily performed.