Makita Corporation

Makita Electric Works, Ltd.

Omron Tateisi Electronics Co.

Michio Okumura

Fusao Fushiya

Hidenori Ito

Nobuo Hakamata

Masaki Kondo

Naohiro Hayakawa

Yuji Takahashi

Shinji Hirabayashi

Takao Kuroyanagi

Takefumi Furuta

Mitsuyoshi Niinomi

Akinori Kimata

Masayoshi Kondo

Shinsuke Mori

Zenichi Oda

Akira Mizumoto

Yasumichi Fukuma

Akiharu Hayashi

Yukimi Amano

Shinya Hamazaki

Yoshiyuki Kubota

In a handheld cutting machine that is constructed such that a user holds the machine by hand and performs cutting processing while moving the same, in which a lower portion of a circular cutting blade protruded from a lower surface side of a base that is placed on a cutting object is covered by a movable cover, an enough clearance is set between a supporting annular ring of a movable cover and a rotating boss portion of a bearing box in order to smoothly open and close the movable cover while a ring spring is interposed between the supporting annular portion and an axial restricting portion to increase dust-proofness of the a movable cover support portion.

Dust-proof structure of movable cover supporting portion of cutting machine

Reciprocating cutting tools () may include a drive source () for reciprocally driving a blade (B). The drive source may also drive a blower () in order to generate an air stream. An air channel () may guide the air stream to a position adjacent to the blade or a workpiece (W) that will be cut by the blade. Further, a chip collector nozzle () may draw or suction cutting chips away from the workpiece that has been cut by the blade.

Reciprocating cutting tools having devices for limiting scattering of cutting chips

A device for mounting a blade on a reciprocally movable blade carrier of a cutting tool includes a blade pressing member and a blade pressing surface formed on the blade carrier, so that the blade can be pressed against the blade pressing surface by the blade pressing member. A retainer member serves as a guide for the pressing member, so that the pressing member can move in a direction substantially perpendicular to the pressing surface between a first position for pressing the blade against the pressing surface and a second position for releasing the pressing force of the pressing member. An operation member is shiftable relative to the blade carrier and is operable by an operator for moving the pressing member between the first position and the second position. A ball is interposed between the pressing member and the operation member. A contacting surface is formed on the operation member, so that the ball can roll along the contacting surface.

Blade mounting devices for reciprocating cutting tools

An electric power blower (,) includes a handle (,) mounting therein a disk-shaped speed change dial (,) which is capable of rotation on a shaft (,). The speed change dial (,) is disposed between a speed change switch (,) and a trigger switch (,) and has a cut-out (,) formed therein through which the trigger switch (,) can pass without interference, depending on the rotational position of the dial (,). The speed change dial (,) includes a stopper (,) at an free end which defines the cut-out (,). A first regulating surface (,) and a second regulating surface (,) are provided on the stopper (,), forming an angled corner therebetween. The peripheral surface of the speed change dial (,) is exposed to the outside of the blower (,) through two windows (,) in both sides of the handle (,) adjacent to the trigger switch (,) so as to allow manual rotation. The amount by which the trigger switch (,) is pulled into the handle is determined by the rotational position of the speed change dial (,).

Switch mechanism for use in an electric power tool

Rechargeable impact wrench

A pair of stoppers (47) capable of moving back and forth in an axial direction of a spindle (5) are provided on an outer periphery of a tubular portion (9a) for supporting the spindle (5). As a pair of projections (49) provided on a first change ring (32) are moved in conjunction with the rotation of the first change ring (32) which is capable of changing over the operating mode of a percussion driver drill, the stoppers (47) move back and forth in the axial direction. During a percussion mode and a drill mode, the stoppers (47) abut against a flat washer (50) for fixing an internal gear (13) to restrict the forward movement of the flat washer (50), while, during a clutch mode provided in the first change ring (32) as a third changeover position, the stoppers (47) move away from the flat washer (50). A pair of washers (40, 41) superposed on each other in the axial direction of the spindle (5) are interposed between the first change ring (32) and a second change ring (39). The washer (40) has a click (45) capable of engaging in one of recesses (59) formed in the first change ring (32). The washer (41) has a click (46) capable of engaging in one of recesses (58) formed in the second change ring (39).

Percussion driver drill, and a changeover mechanism for changing over a

To avoid entanglement when a vertical blind is opened and closed, an attachment member is secured to a lead carrier and engages with an operation shaft. The attachment member is composed of a body having a length half the width of the lead carrier, and a snap detent projects from one end of the body. The body is formed by cutting an upper part of a horizontal cylindrical member and opening outwardly the cut edges of the body. The attachment member is attached to the operation shaft from the underside in an oblique direction such that the body engages with the lower part of the operation shaft and the snap detent snap engages with the upper part of a short jaw. Even when rotary moment is applied to the lead carrier, the attachment member holding the operation shaft counteracts the rotary moment, thereby preventing the lead carrier from rotating.

Vertical blind

Battery holder

Battery pack

Design for battery pack

Portable electric screwdriver

Driver drill

A hook device in a power driven tool includes a hook member having a base disposed along a mounting portion of the body of the power driven tool and having a hook portion extending from the base for engagement with an object such as a waist belt of an operator. The mounting portion of the body includes a pair of engaging slots spaced from each other in a circumferential direction of the mounting portion. The base of the hook member includes a pair of engaging members disposed at both ends of the base in a circumferential direction for engagement with the engaging slots, respectively.

Hook device in power driven tool

Portable electric drill

Growing community of inventors

Anjo, Japan

Michio Okumura