US 12,337,458 B2
Electric working machine
Daisuke Suzuki, Anjo (JP); and Masayoshi Okumi, Anjo (JP)
Assigned to MAKITA CORPORATION, Anjo (JP)
Filed by Makita Corporation, Anjo (JP)
Filed on Feb. 9, 2023, as Appl. No. 18/166,569.
Claims priority of application No. 2022-026616 (JP), filed on Feb. 24, 2022.
Prior Publication US 2023/0264337 A1, Aug. 24, 2023
Int. Cl. B25F 5/02 (2006.01); F16K 17/36 (2006.01); B27B 17/00 (2006.01); B27B 17/02 (2006.01)
CPC B25F 5/02 (2013.01) [F16K 17/366 (2013.01); B27B 17/0008 (2013.01); B27B 17/02 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An electric working machine comprising:
at least one electrical component;
a first space in which the at least one electrical component is disposed;
a partition wall separating the first space from a second space different from the first space, the partition wall including a first communication opening communicating the first space and the second space; and
a first one-way valve disposed at the first communication opening,
wherein:
the first one-way valve is configured to open and close according to an orientation of the electric working machine,
the partition wall separates the first space from a third space different from the first space,
the partition wall further includes a second communication opening communicating the first space and the third space,
the electric working machine further comprises a second one-way valve disposed at the second communication opening and configured to open and close according to the orientation of the electric working machine,
when the electric working machine is in a first orientation, the first one-way valve is open and the second one-way valve is closed, and
when the electric working machine is in a second orientation, the first one-way valve is closed and the second one-way valve is open.