Makita Corporation

Takahiro Sakaguchi

Kenji Mukoyama

Junichi Iwakami

Jiro Oda

Nobuyuki Kakuda

Yasutoshi Shimma

A nail gun includes a contact arm that is movable relative to a nail gun body between an upper first stroke end position and a lower second stroke end position. The contact arm may prevent the nails from being driven when it is in the first stroke end position. A nail driving prevention device includes an engaging member that is movable to enter the moving path of the contact arm so as to prevent the contact arm from moving from the first stroke end position toward the second stroke end position when the number of the nails in a nail magazine has been reduced to a predetermined number. A deviating device is operable to change the moving course of the engaging member away from the moving path of the contact arm when the contact arm is positioned above the first stroke end position.

Nail guns having means for preventing the nail driving operation

A hammer drill (,) includes an intermediate shaft (,), a clutch ring (,), a second gear (,), and a boss (,) all mounted on the intermediate shaft (,). Also included are a rotatable change lever (,) and a clutch plate (,) which has lock claws (,). When the change lever (,) is fully rotated in the clockwise direction, the hammer drill (,) is placed in a drill-only mode where the clutch ring (,) meshes only with the second gear (,). When the change lever (,) is rotated approximately 45 degrees counterclockwise from the foregoing position, the hammer drill (,) is placed in a hammer drill mode, where the clutch ring (,) meshes with the second gear (,) and the boss (,). When the change lever (,) is rotated approximately another 45 degrees counterclockwise, the hammer drill (,) is placed in a neutral position where tile second gear (,) is disengaged from the clutch ring (,), with the clutch ring (,) remaining in mesh with the boss (,). When the change lever (,) is rotated another 45 degrees counterclockwise, the hammer drill (,) enters into a hammer-only mode where the second gear (,) meshes with, and is prevented from rotation by, the lock claws (,) of the clutch plate (,).

Mode changing mechanism for use in a hammer drill

A fastener tool includes a body having a driver guide mounted thereon. The driver guide extends downwardly from the body and has a longitudinal axis in a driving direction of fasteners. A control member may be movably mounted on the body for controlling a fastener driving operation. A support leg device serves to permit the tool to be placed on a surface in an upright position, in which the driver guide extends substantially vertically relative to the surface. The support leg device defines a predetermined support area extending in a plane for abutment with the surface. The support leg device is arranged such that the tool center of gravity is positioned directly above the support area in a plan view when the tool is in the upright position, in which the support area extends substantially horizontally, so that the control member does not substantially interfere with the surface.

Growing community of inventors

Anjo, Japan

Takahiro Sakaguchi