| Patent Number |
Title Of Patent |
Date Issued |
| 7526868 |
Power tool with vibration reduction |
May 5, 2009 |
| It is an object of the invention to provide a useful technique for reducing vibration of a handgrip and improving the cutting efficiency while achieving weight reduction of a reciprocating power tool. According to the invention, a representative reciprocating power tool is provided t |
| 7523791 |
Impact power tool |
April 28, 2009 |
| An object of the invention is to provide an improved technique for lessening an impact force caused by rebound of a tool bit after its striking movement in an impact power tool. The representative impact power tool comprises a tool body, a hammer actuating member, a tool holder, a dr |
| 7523790 |
Reciprocating power tool having a vibration-damping handle |
April 28, 2009 |
| It is an object of the invention to provide an effective technique for enhancing the effect of reducing vibration of a grip of a reciprocating power tool. According to the present invention, a representative reciprocating power tool may comprise a tool bit, a tool body and a grip. Th |
| 7513403 |
Idle driving operation preventing devices for fastener driving tools, and fastener driving tools |
April 7, 2009 |
| An idle driving operation preventing device (40) includes an engaging member (45) disposed on a pusher (31). The engaging member (45) can engage a stopper member (47) coupled to an operation member (5a), so that the movement of the operation member (5a) for driving the fastener (n) c |
| 7513402 |
Power tool |
April 7, 2009 |
| It is an object of the invention to provide an improvement of the operability in a driving operation using a power tool. A representative power tool may comprise a driving material driven into a workpiece, a driving mechanism to drive the driving material into the workpiece, a motor, |
| 7469752 |
Power tool |
December 30, 2008 |
| It is an object of the invention to provide a power tool having a rational structure. A representative power tool is provided to have a tool bit a power tool body, a motion converting mechanism housing chamber, a motion converting mechanism and a clutch mechanism. The power tool further |
| 7461766 |
Combustion power tool |
December 9, 2008 |
| It is an object of the present invention to provide a combustion power tool having a rational construction. A representative combustion power tool according to the invention may include a combustion chamber, a fuel supplier to supply fuel into the combustion chamber, an igniter disposed |
| 7453239 |
Charging apparatus having a switching element for controlling charging power |
November 18, 2008 |
| A charging device that may perform charging with larger current is provided. The charging device comprises a switching element for increasing or decreasing charging power, a PWM controlling circuit for intermittently turning the switching element on or off, a current detecting circui |
| 7445139 |
Power driver utilizing stored spring energy |
November 4, 2008 |
| It is an object of the invention to provide an effective technique for achieving a smooth driving operation with a driving power tool for driving a driving material into a workpiece. A representative driving power tool for driving a driving material into a workpiece is provided with |
| 7444963 |
Combustion power tool |
November 4, 2008 |
| It is an object of the invention to provide a reliable ignition by a spark plug in a combustion power tool. Representative combustion power tool may comprise a combustion chamber, a gas supply section, a single spark plug, an ignition control device, a cylinder connected to the combustio |
| 7444913 |
Parallel fences |
November 4, 2008 |
| A parallel fence includes a fence body, a front guide, a rear guide, and a positioning device. The fence body is adapted to be placed on a worktable. The front guide and the rear guide are disposed on the front end and the rear ends of the fence body. In a first operational position, |
| 7424779 |
Cutting tool |
September 16, 2008 |
| A cutting tool is provided for preventing dust intrusion into a guide member effectively as well as cooling a housing, thereby maintaining an excellent operability. A cutting tool has a body housing including an upper housing and a lower housing. In front of a flange portion of the l |
| 7410009 |
Power tool |
August 12, 2008 |
| It is an object of the present invention to provide an improved technique for preventing leakage of lubricant from an accommodating space that houses a driving mechanism, while regulating the internal pressure of the accommodating space in a power tool. A representative power tool includ |
| 7406902 |
Battery powered table saws |
August 5, 2008 |
| A table saw includes a table for placing a workpiece thereon. A saw unit may be vertically movably supported on the table and may have a saw blade mounted thereon. A battery-driven motor may be mounted on the saw unit for rotatably driving the saw blade. A battery mounting device may be |
| 7395603 |
Reciprocating saw |
July 8, 2008 |
| The reciprocating saw has a main body, a support member, a guide shoe, a locking member and an engaging member. The support member can be slid relative to the main body. The guide shoe is attached to an anterior end of the support member. The locking member can be switched between a stat |
| 7388312 |
Power tool |
June 17, 2008 |
| It is an object of the invention to provide an improved technique for controlling the output characteristic of a motor. Representative power tool includes a tool bit and a motor. The motor drives the tool bit and includes an armature, a coordinator, a plurality of segments and a plur |
| 7387056 |
Slide compound saws |
June 17, 2008 |
| Slide compound saws (1, 100, 150) may include a table (3b) defining a table surface. A saw unit (20) may be pivotable relative to the table surface. A first slide bar (31, 51, 251, 351) may be slidably coupled to the table and may be disposed substantially in parallel with the table |
| 7383895 |
Impact power tool |
June 10, 2008 |
| It is an object of the invention to provide an improved technique for lessening an impact force caused by rebound of a tool bit after the striking movement of the tool bit. Representative impact power tool (101) includes a tool body (103), a hammer actuating member (119, 145), a driv |
| 7383893 |
Electric hammer drill |
June 10, 2008 |
| It is an object of the present invention to provide an effective technique to alleviate vibration in the electric hammer drill. According to the invention, representative electric hammer drill is provided with a body, a motor, a striker, a cylinder, first and second power transmitting |
| 7380613 |
Electric power tool |
June 3, 2008 |
| An electric power tool is provided which prevents malfunction with excellent operability even when one operation mode among various modes is selectable. In a gear case of a housing, there are provided a clutch switching groove which engages with a connecting projection of a clutch sw |
| 7380612 |
Electric power tool |
June 3, 2008 |
| An electric power tool is provided which prevents malfunction with excellent operability even when one operation mode among various modes is selectable. In a gear case of a housing, there are provided a clutch switching groove which engages with a connecting projection of a clutch sw |
| 7380343 |
Cutting tool |
June 3, 2008 |
| A cutting tool that maintains a compact-sized main body without affecting the usability as well as the dust collecting operation is provided. In a dust cover mounted on a blade case, a dust collection route divided from a saw blade is formed, and an outlet is provided at the rear side of |
| 7377202 |
Lighted power tools |
May 27, 2008 |
| A power tool includes a base for supporting a workpiece to be machined. A tool unit can move relative to the base and has a tool for machining the workpiece. A light projection device can project light onto the workpiece. A control device can control the light projection onto the wor |
| 7363713 |
Reciprocating power tool |
April 29, 2008 |
| It is an object of the present invention to provide a useful technique for effectively reducing vibration in a reciprocating power tool with a simple structure. According to the present invention, a representative reciprocating power tool includes a motor, a tool bit, a slider, a motion |
| 7334646 |
Electric power tool with improved speed change gearing |
February 26, 2008 |
| A battery-operated driver-drill (1) includes an epicycle reduction gear unit (8) which encases a switchover sleeve (26) having inner teeth (27) and outer teeth (28). The gear unit (8) is rotatably mounted on second and third internal gears (19, 20) and integrally slidably connected with |
| 7323797 |
Power tool |
January 29, 2008 |
| It is an object of the invention to provide an effective technique for making compact power tool having an electric motor. A representative power tool may include a tool bit, housing and an electric motor. The electric motor is housed in the housing and drives the tool bit. The elect |
| 7322427 |
Power impact tool |
January 29, 2008 |
| It is an object of the present invention to provide an effective technique to improve ease of operation of the power impact tool. The power tool of the present invention includes a tool body, a tool bit, a motor, first and second switches and a mode changing mechanism. The motor is drive |
| 7320368 |
Power impact tool |
January 22, 2008 |
| The object of the invention is to ease of operation of the power impact tool. Such object is achieved by a representative power impact tool according to the invention including a motor, a tool bit, a trigger and a mode changing member. The trigger is manually operated by a user to co |
| 7308948 |
Electric power tool |
December 18, 2007 |
| An electric power tool is provided which prevents malfunction with excellent operability even when one operation mode among various modes is selectable. In a gear case of a housing, there are provided a clutch switching groove which engages with a connecting projection of a clutch sw |
| 7252581 |
Power tools |
August 7, 2007 |
| It is accordingly an object of the invention to provide a technique of cooling a power tool which further improves cooling effectiveness of the power tool. According to the invention, a power tool is provided that includes a driving motor, a tool bit, a power transmitting mechanism, a |
| 7252157 |
Power tool |
August 7, 2007 |
| It is an object of the present invention to provide a power tool having a further improved vibration reducing performance. The representative power tool may comprise a tool bit, an actuating mechanism, a dynamic vibration reducer. The actuating mechanism drives the tool bit linearly by m |
| 7252156 |
Vibration isolation handle |
August 7, 2007 |
| It is an object of the invention to provide an effective technique for reducing the manufacturing costs of a handle mounted to a power tool. According to the invention, a representative handle may comprise a handle body, a grip, an elastic element and an elastic outer surface member. The |
| 7246444 |
Cutting tool with guide member clamping means |
July 24, 2007 |
| A cutting tool that improves operability by facilitating operation of a lever for operating a clamp mechanism of a guide member is provided. A clamp mechanism is constituted by a clamp pin that protrudes its distal end to the outside of the blade case while penetrating a depth guide and |
| 7243829 |
Combustion power tool |
July 17, 2007 |
| A combustion power tool having a first combustion chamber, a second combustion chamber, an igniter, a partition, and a driving mechanism. Flammable gas is introduced or charged into the first and second combustion chamber. The igniter is disposed in the first combustion chamber. The |
| 7238443 |
Battery packs suitable for use with battery powered appliances |
July 3, 2007 |
| Cooling air intake port (52), cooling air exhaust port (55), and securing walls (86, 87), which contact and secure the side surfaces of one or more battery cells (72), may be defined within two battery pack housing halves (50, 80). When battery pack (99) is assembled, at least one coolin |
| 7227335 |
Method and apparatus for diagnosing the condition of a rechargeable battery |
June 5, 2007 |
| A diagnostic technique for determining whether the degradation of a rechargeable battery is normal or abnormal is provided.A device for determining whether the degradation of a rechargeable battery is normal or abnormal comprises a device for measuring a degradation indicator of a re |
| 7220091 |
Fastening nuts with loosening assist functions |
May 22, 2007 |
| A fastening nut includes an operation member, a female threaded member, and a control device. The operation member is operable by an operator to rotate in a fastening direction and a loosening direction. The control device is coupled between the operation member and the female threaded |
| 7217178 |
Rotary power tool |
May 15, 2007 |
| In order to provide an effective technique in simplifying the vibration-proof structure of a handle equipped in a rotary power tool, a representative rotary power tool 101 is provided with a tool body 103, a rotary-disk shaped tool bit 115, a handle 109, a pivot region 121 and an ela |
| 7211347 |
Battery packs having improved heat radiation |
May 1, 2007 |
| A battery pack (1) has a double casing structure, including an inner case (2) disposed inside an outer case (3). The inner case (2) includes a radiator plate (9) that is in contact with the side walls of battery cells (4) disposed within the battery pack (1). A forked air passage (32) |
| 7204322 |
Power tool having pneumatic vibration dampening |
April 17, 2007 |
| It is an object of the present invention to provide a vibration reducing technique caused by air pressure fluctuations within a power tool. According to the present invention, a representative power tool may comprise a driving motor, a driver and a tool bit. The driving motor drives |
| 7201235 |
Driver drill |
April 10, 2007 |
| A driver drill that can effectively prevent erroneous clutch operation in a drill mode is provided. A flat washer positioned between steel balls for locking an internal gear and a coil spring is rotatable by rotative operation of a mode-change ring. Also, protruding streaks are provided |
| 7188557 |
Tightening tool |
March 13, 2007 |
| It is an object of the invention to provide a technique that can alleviate noise when the clutch comes into engagement. Representative tightening tool according to the invention comprises a motor, a driven shaft driven by the motor, a tool bit driven by the driven shaft and a clutch |
| 7174641 |
Cutting tool |
February 13, 2007 |
| The present invention provides a technique for improving the workability of a cutting tool. According to the present invention, a cutting tool may comprise a body, a base, a sub-base and a parallel ruler. The body may have a blade that can be rotationally driven. The base may be connecte |
| 7168505 |
Rotary tool |
January 30, 2007 |
| It is an object of the invention to provide an effective technique for reducing wear of sliding contact areas in an engagement clutch of a rotary tool. According to the invention, a representative rotary tool may comprise a motor, a tool bit, a driving-side clutch element, a driven-s |
| 7162792 |
Device for manufacturing motor |
January 16, 2007 |
| A device for manufacturing a motor is disclosed. The motors to be manufactured have a stator body including a stator of the motor, field cores that protrude from the inside surface of the stator body, pole pieces that extend from the field cores to cross with the field cores, coil re |
| 7152329 |
Electric jigsaw capable of improved illumination of workpieces |
December 26, 2006 |
| An electric jigsaw (1) includes a main housing (2) containing a gear housing (10), a reciprocating rod (11) vertically projecting from within the gear housing, a saw blade (13) coupled to the rod via a coupling ring (12), and a transparent synthetic resin guard (14) provided at the lower |
| 7143842 |
Power tool |
December 5, 2006 |
| It is an object of the invention to provide a reciprocating power tool having a further improved power transmitting mechanism for converting a rotating output of a driving motor into linear motion in the axial direction of the tool bit. The representative reciprocating power tool may |
| 7137761 |
Right angle drill with an improved structure for accommodating a light assembly |
November 21, 2006 |
| A right angle drill (1) includes a motor housing (6) which defines therein a hole (18) for accommodating a motor field system (3), a cut-out (15) formed in the underside of the motor housing (6) from the front end toward the rear of the tool (1), and a light unit (16) slidably fitted in |
| 7137542 |
Vibration isolating handle |
November 21, 2006 |
| It is an object of the invention to provide a vibration reducing technique which is effective in obtaining stable vibration reducing effectiveness. A representative vibration isolating handle may include a body, a grip part and an elastic member. The handle body is provided to be attacha |
| 7131503 |
Impact driver having a percussion application mechanism which operation mode can be selectively |
November 7, 2006 |
| An impact driver capable of boring and having an excellent usability is provided. An anvil(8) is arranged so as to slightly move in the axial direction. A first cam(29) having cam gears(30, 30 . . . ) is externally provided at the anvil so as to be integral with the anvil(8). At the rear |
