| Patent Number |
Title Of Patent |
Date Issued |
| 5686817 |
Battery charger having microcomputer for adjusting charging current |
November 11, 1997 |
| A battery charger includes a microcomputer operable to receive an input value corresponding to a value of charging current. A thyristor has the gate connected to an output port of the microcomputer. The microcomputer operable to adjust the firing angle of the thyristor for controlling th |
| 5685080 |
Battery powered chain saw |
November 11, 1997 |
| A gear housing is arranged at or by the center of a main body housing of a chain saw and a handle housing extends backward therefrom. A motor housing is formed on the left side of the gear housing perpendicularly. A support member and a cover are attached on the right side of the gear ho |
| 5680704 |
Cutting chip suction device for use with cutting tool |
October 28, 1997 |
| A cutting chip suction device is adapted for sucking cutting chips produced when a work is cut by a blade of a cutting tool. The device includes a duct and a duct mounting mechanism. The duct has one end connected to a dust collector and having the other end formed with an opening. The d |
| 5664312 |
Method of detaching a driver bit from a screwdriver and a stop ring provided with a function of |
September 9, 1997 |
| To obviate the necessity of a plier or other tool for extracting a driver bit from a screwdriver, and prevent an adjustment sleeve detached from the screwdriver from being lost. The stop ring has an oval dusting opening having a width wider than the distance between the opposite sides of |
| 5662257 |
Nailing machine |
September 2, 1997 |
| A nailing machine includes a body, a driver extending downwardly from said body and vertically reciprocally movable for driving nails, and a driver guide for guiding the driver. A contact arm is movable between a lower first position and an upper second position and has a lower end for |
| 5661909 |
Blade mounting device in cutting tool |
September 2, 1997 |
| A blade mounting device is operable for mounting a blade on a movable member of a cutting member which is moved in a predetermined motion for a cutting operation. The blade mounting device includes a pair of claws mounted on the movable member and operable by an operator between a closed |
| 5660094 |
Miter saw |
August 26, 1997 |
| A miter saw includes a support mechanism for supporting a miter saw unit relative to a base in such a manner that the miter saw unit is both vertically and laterally pivotable. A position determining mechanism serves to selectively determine the position of the saw unit at any of pos |
| 5653030 |
Hedge trimmer |
August 5, 1997 |
| A hedge trimmer includes a motor and a cutting mechanism driven by the motor. A clutch mechanism is interposed between the motor and the cutting mechanism. A first and a second handle are provided to be grasped with both hands of an operator. A clutch control mechanism is provided for |
| 5634274 |
Ventilating device in power driven tool |
June 3, 1997 |
| A ventilating device in a power driven tool has a fan driven by a motor for cooling the motor and has an air flow channel for the air to flow to the outside after passing around the motor. The ventilating device includes an air passage member disposed in the air flow channel on the downs |
| 5633096 |
Battery holder for power driven-tools |
May 27, 1997 |
| The present invention provides novel applications of a battery pack, which is detachably attached to specific power-driven tools. A battery holder of the invention is applicable as a separate power source of portable electrical appliances used for and in automobiles. A body (2) of a batt |
| 5622035 |
Quick blade attachment structure for mowers |
April 22, 1997 |
| The invention provides a quick blade attachment structure For quickly but securely attaching and detaching one or a plurality of blades to and from a mower. A rotary member (3) of a mower (1) includes a blade holder (4) and a support member (5) coaxially attached to the blade holder (4) |
| 5617638 |
Base attachment structure applicable to cutting tools |
April 8, 1997 |
| A combination of a base attachment structure and a cutting tool, where the base attachment structure includes a connection bolt (8) inserted and movably fitted in an aperture (9a) formed in a curved plate (9) of a gear housing (2) and a cross-shaped slide aperture (11) formed in an a |
| 5609028 |
Pneumatic tool |
March 11, 1997 |
| A pneumatic tool includes a body having a pressure accumulation chamber formed therein for accumulating compressed air. A cap are mounted on the body and has a cap chamber formed therein for communication with the pressure accumulation chamber. The cap has a joint for connection with an |
| 5593079 |
Nailing machine |
January 14, 1997 |
| A nailing machine includes a body, a driver extending downwardly from the body and vertically reciprocally movable for driving nails, and a driver guide for guiding the driver. A contact arm is movable between a lower first position and an upper second position and has a lower end for |
| 5584753 |
Device for fixing tool element to rotary tool |
December 17, 1996 |
| A device for fixing a tool element to a spindle of a rotary tool includes a first rotary member and a second rotary member adapted to be mounted on the spindle in a confronting relationship with each other in an axial direction of the spindle. The second rotary member has an abutting sur |
| 5568849 |
Clutch mechanism in power driven screwdriver |
October 29, 1996 |
| A power driven screwdriver including a housing, a spindle rotatably and axially movably disposed within the housing, a motor for driving the spindle, and a clutch mechanism interposed between the motor and the spindle. The clutch mechanism includes a drive clutch member rotatably dri |
| 5524516 |
Miter saw |
June 11, 1996 |
| A miter saw includes a base for placing a work thereon, a miter saw unit having a saw blade mounted thereon, and a slide support mechanism comprising a slide mechanism having a slide shaft mounted on one of the miter saw unit and the base, and a sleeve member mounted on the other of |
| 5522533 |
Magazine for use with fastener driving tool |
June 4, 1996 |
| A magazine for use with a fastener driving tool is adapted for feeding a fastener stick having fasteners connected in series into a driver guide. The magazine has a magazine body and a slide door. The magazine body has a bottom defining a guide surface for the fastener stick. The slide d |
| 5487221 |
Jig saw |
January 30, 1996 |
| A jig saw includes a housing and a drive shaft disposed within the housing and driven to perform a predetermined motion. A holder is mounted on the drive shaft and includes an operation member operable between a fixing position and a releasing position for fixing and releasing a saw blad |
| 5453677 |
Battery charger with high sensitivity |
September 26, 1995 |
| A battery charger includes a battery voltage detecting circuit for detecting a voltage of a battery during a charging operation. The battery voltage detecting circuit includes a pair of a first and a second voltage-dividing resistor. A transistor is interposed between the first and s |
| 5449996 |
Battery charger with improved change stopping capability |
September 12, 1995 |
| A battery charger includes a circuit for monitoring a battery voltage during supply of a charging current to a battery, and a circuit for stopping the supply of the charging current when the battery voltage is decreased by a predetermined value after the battery voltage has reached i |
| 5437214 |
Miter saw |
August 1, 1995 |
| A miter saw includes a support mechanism for supporting a miter saw unit relative to a base in such a manner that the miter saw unit is both vertically and laterally pivotable. A position determining mechanism serves to selectively determine the position of the saw unit at any of pos |
| 5416885 |
Speed control device for DC motor |
May 16, 1995 |
| A speed control device for a DC motor controls the rotational speed of the DC motor through adjustment of a duty cycle of a semiconductor switching element. The rotational speed to be obtained is determined by an amount of operation of an operation member. A second contact switch is arra |
| 5392678 |
Miter saw |
February 28, 1995 |
| A miter saw includes a base on which a work is placed. A miter saw unit supports a saw blade and has a motor for rotatably driving the saw blade. A support mechanism is provided supporting the miter saw unit relative to the base in such a manner that the miter saw unit is laterally leftw |
| 5392519 |
Reciprocating saw |
February 28, 1995 |
| A reciprocating saw includes a body and a slider supported by the body such that the slider is slidably movable in a longitudinal direction of the body and is pivotally movable in a vertical direction. A first motion conversion mechanism is operable to convert the rotational movement of |
| 5372206 |
Tightening tool |
December 13, 1994 |
| A tightening tool includes a drive member rotatably driven by a motor. An intermediate member is interposed between the drive member and a spindle and rotatable with the drive member. A claw clutch is formed between the spindle and the intermediate member and is engageable when the spind |
| 5357834 |
Miter saw |
October 25, 1994 |
| A miter saw includes a base for placing a work thereon and a miter saw unit supported by a support mechanism relative to the base. The miter saw unit supports a saw blade and a motor for driving the saw blade. The motor has a motor shaft extending in a longitudinal direction of the motor |
| 5357715 |
Sander |
October 25, 1994 |
| A sander includes a body and a drive device mounted on the body. A spindle is rotatably driven by the drive device. A connecting shaft is mounted on the spindle and is rotatable relative to the spindle around an axis displaced from the rotational axis of the spindle. An abrasive disc is |
| 5355635 |
Power-driven cut-off machine |
October 18, 1994 |
| The present invention provides an improved cut-off machine wherein the length of an abrasive wheel in contact with a work is easily adjustable. The cut-off machine of the invention includes: a base with fixed and movable vises for clamping a work; a pair of joint members being supported |
| 5343961 |
Power transmission mechanism of power-driven rotary tools |
September 6, 1994 |
| The present invention provides a power-driven rotary tool having an improved power transmission mechanism which has little frictional resistance against a spindle rotatable about and reciprocating along a longitudinal axis. The power-driven rotary tool of the invention includes: a sp |
| 5332141 |
Nailing machine |
July 26, 1994 |
| A nailing machine includes a nail feeding channel member having therein a nail feeding channel connected to a nail guide channel formed in a driver guide. A driver is reciprocally driven through the nail guide channel for driving nails of a nail-carrying strip supplied by a nail feeding |
| 5331240 |
Field assembly of electric motors |
July 19, 1994 |
| The present invention provides an improved field assembly of an electric motor which is free from broken wires or short circuits when being incorporated in a power-driven tool. The field assembly of the invention includes a metallic core formed of a stack of annular laminations around a |
| 5322189 |
Fastener feeding mechanism in fastener driving device |
June 21, 1994 |
| A fastener feeding mechanism in a fastener driving device is provided for feeding fasteners from a fastener support rail formed in a magazine to a fastener drive track formed in a driver guide for reciprocal movement of a driver and connected to a forward portion of the fastener support |
| 5320177 |
Power driven hammer drill |
June 14, 1994 |
| The invention provides an improved intermediate housing incorporated in a power driven hammer drill, which is light in weight, easily and safely handled, and uncostly manufactured. The intermediate housing of the invention includes a bearing member and a cylindrical piston housing me |
| 5289885 |
Tightening tool |
March 1, 1994 |
| A tightening tool includes a hammer for impacting on an anvil which drives a nut etc. A microphone is provided for converting impact sounds of the hammer on the anvil into an electric signal. A counting device counts the number of pulses of the electric signal. A setting device is provid |
| 5289101 |
Battery charger with charging current controller |
February 22, 1994 |
| A battery charger includes a transformer having a primary coil and a secondary coil, a switch for duty control of a current flowing through the primary coil of the transformer, a detector for detecting a value of a current flowing through the secondary coil of the transformer, and a |
| 5277261 |
Tightening tool |
January 11, 1994 |
| A tightening tool includes a hammer for impacting on an anvil which drives a nut etc. A microphone is provided for converting impact sounds of the hammer on the anvil into an electric signal. A counting device counts the number of pulses of the electric signal. A setting device is provid |
| 5273091 |
Biscuit jointer |
December 28, 1993 |
| The present invention provides an improved biscuit jointer which allows a ruler guide to be kept completely level during fine adjustment of the vertical position and angular orientation of the ruler guide with respect to a ruler and accurately abuts against a workpiece. The biscuit joint |
| 5271471 |
Power driven screwdriver |
December 21, 1993 |
| A power driven screwdriver includes a clutch mechanism provided between a spindle for mounting a driver bit thereon and a drive member rotatably driven by a motor. The clutch mechanism includes a protrusion formed on one of the spindle and the drive member and a recess formed on the othe |
| 5268987 |
Speed control device for DC motor |
December 7, 1993 |
| A speed control device for a DC motor includes a voltage maintaining circuit connected between the DC motor and a comparator circuit for maintaining the voltage corresponding to an electromotive force when a pulse wave outputted from a pulse-width extension circuit is at a level for |
| 5267682 |
Adjusting mechanism for adjusting position of abutting member in fastener driving device |
December 7, 1993 |
| A fastener driving device includes a body, a driver guide extending downwardly from the body for driving fasteners by a driver, a first abutting member mounted on the driver guide and having a first reference surface for abutment on an edge of a work to be fixed, and a second abuttin |
| 5265312 |
Hook device in power driven tool |
November 30, 1993 |
| 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 th |
| 5259145 |
Clamp device for rotary tool element |
November 9, 1993 |
| A device for axially clamping a rotary tool element fitted on a spindle of a power driven tool or the like includes a first flange and a second flange. The first flange is mounted on the spindle and has an inner part rotatable with the spindle and an outer part rotatable relative to the |
| 5240161 |
Fastener guide mechanism in fastener driving tool |
August 31, 1993 |
| A fastener guide mechanism in a fastener driving tool includes a door member for closing an opening formed on one of the lateral sides of a fastener guide having a driver guide and a fastener guide. The fastener guide includes therein a fastener guide channel. A fastener feeding device |
| 5238168 |
Mechanism for removing jammed fastener in fastener driving device |
August 24, 1993 |
| A mechanism is provided for removing a jammed fastener from a fastener drive track formed in a driver guide of a fastener driving device through an opening formed in the fastener dive track. The fastener driving device includes a driver reciprocally driven by a driving source to drive |
| 5219110 |
Mechanism for adjusting driving depth of fasteners in fastener driving tool |
June 15, 1993 |
| A fastener driving tool includes a driver guide within which a driver is reciprocally moved to drive the fasteners, a contact arm vertically movable along the driver guide and having a lower end for abutment on a work, a control mechanism interlocked with the contact arm for controlling |
| 5209308 |
Power driven screwdriver |
May 11, 1993 |
| A power driven screwdriver includes a device interposed between a spindle and a housing for preventing rotation of the spindle. The device includes a first member and a second member. The first member is disposed on the spindle and is rotatable therewith. The second member is fixed to th |
| 5201146 |
Portable rotary tool |
April 13, 1993 |
| A portable rotary tool includes a body having therein a drive device for rotation of a tool for working. The portable rotary tool further includes a handle which has an operation member mounted thereon for operation of the motor by an operator. A connecting device is provided for connect |
| 5180091 |
Nailing machine |
January 19, 1993 |
| A nailing machine includes a driver guide mounted on a body. A driver is provided and is reciprocally movable within a nail guide channel formed within the driver guide. A nail magazine is mounted on the driver guide and includes therein a nail storing channel in communication with the n |
| 5134909 |
Power driven screwdriver |
August 4, 1992 |
| A power driven screwdriver includes a driving mechanism interposed between the drive motor and the spindle. The driving mechanism includes a first member rotatably mounted within the housing and a second member movably mounted to the first member and driven by the driver motor. A cam |
