公开(公告)号：US20180340652A1

公开(公告)日：2018-11-29

申请号：US15963512

申请日：2018-04-26

申请人： MAKITA CORPORATION

发明人： Tomofumi KAWAI ,  Akihito HARA ,  Koji TANAKA ,  Yuki MIWA

IPC分类号： F16N3/12 ,  F16N13/02 ,  F16N23/00

摘要： A grease discharge device includes a motor, a plunger, a grease supply unit, a pump, a check valve, and a relief valve. The plunger reciprocates by driving of the motor. The grease supply unit supplies grease to a forward movement side with respect to a backward movement side dead center of the plunger. The pump performs a discharge behavior of the grease by the reciprocation of the plunger. The check valve is disposed at a downstream side with respect to a forward movement side dead center of the plunger in a discharge path of the grease inside the pump. The relief valve is disposed between a supply portion of the grease by the grease supply unit and the check valve. The relief valve releases the grease inside the discharge path to the grease supply unit side according to a pressure rise inside the discharge path.

公开(公告)号：US20200282482A1

公开(公告)日：2020-09-10

申请号：US16787503

申请日：2020-02-11

申请人： MAKITA CORPORATION

发明人： Yosuke NAOI ,  Akihito HARA ,  Yasushi OGURA ,  Wei YANG ,  Pengfei YANG ,  Hao Wei MEI ,  Tomohiro UKAI

IPC分类号： B23D59/04 ,  B23D49/16 ,  B23D49/10

摘要： A reciprocating tool easily supplies a lubricant, such as grease (lubricating oil), to a mechanism for reciprocating a slider, and prevents a lack of lubricant. A reciprocating saw as a reciprocating tool includes a motor, a reciprocating conversion mechanism that converts rotation of the motor to reciprocation, a slider connected to the reciprocating conversion mechanism and being reciprocable, and a slider guide that supports the slider in a reciprocable manner and includes a lubricant-passage member in contact with the slider to allow passage of at least part of a lubricant through the lubricant-passage member, and a lubricant reservoir located adjacent to the lubricant-passage member to store the lubricant.