Abstract: A cranking arrangement has a rotor, an output shaft driven by a rotor, a pinion carried by the output shaft for driving a toothed ring of an internal combustion engine, the output shaft being supported so that it can be displaced axially for engagement and disengagement of the pinion, and a brake surface. The output shaft acts upon the rotor in a disengaged position axially in such a way that the rotor meets the brake surface.

Abstract: A gas-driven turbine starter (10) is provided with a slip clutch comprised of a radially inner portion (58,70) which is rotatable relative to the starter housing (14); and a radially outer portion (54,68) which is connected to the housing so as to be rotationally stationary relative thereto. This arrangement functionally separates the slip clutch from the power train, and provides for reduced wear of clutch discs.

Abstract: The starting device, particular a freely disengaging starting device, has an electric motor, the rotor of which drives a driven shaft which has a pinion for driving the gear ring of an internal combustion engine, in which the driven shaft end section carrying the pinion is supported in a face wall of the housing. For a compact structural form, in particular a short form, the driven shaft (6) is supported with its other end (23), via a first bearing (needle bearing 37) in a central aperture (166) of a free-wheel outer ring (35), the surface (164) of which is supported via a second bearing (deep groove ball bearing 38) on the housing (2) of the starting device (1). The associated end (25) of a rotor shaft (17) of the starter rotor (5) is supported via a third bearing (needle bearing 31) on the end section of the driven shaft (6) which lies in the interior of the housing (2).

Abstract: A coaxial type starter motor comprises a d.c.

Abstract: An electric engine starter that has a motor frame and a planetary gear mechanism is provided with an internal shield that is operative to prevent brush dust from entering the planetary gear mechanism. The shield is formed of steel and has an outer annular flange that, prior to assembly to the starter, is located at an angle to a plane that is normal to the longitudinal axis of the shield. When the shield is assembled to the starter, it is compressed between the motor frame and a support for the ring gear of the planetary gear mechanism. During this compression, the flange is deflected to develop a spring force. This spring force causes a gasket interposed between the flange and the motor frame to tightly seal against the motor frame. This spring force further causes the shield to tightly engage the ring gear support.

Abstract: A system for starting model engines. The model engine starting system, in the preferred form, utilizes a motor to drive a torque converting unit. The output of the torque converting unit is mechanically coupled to the crankshaft of an engine through an overrunning clutch so that rotation and torque from the torque converting unit is transmitted to the crankshaft. There is, however, no transmission of rotation or torque in the reverse direction when the engine is running. For glow ignition model engines, a system is described which assists the starting system by controlling the temperature of the glow plug, thus maintaining proper ignition of fuel during starting and running the engine. In order to control the temperature of the glow plug, a control system is utilized to vary the electrical power delivered to the glow plug according to the glow plug's temperature.

Abstract: An engine starter having an internal liner which carries forward the motor and gear reducing assembly in unison to engage the engine simultaneously providing power to the engine starter. Movement of the liner performs the valving or switching function to permit starter function.

Abstract: A starting motor with an intermediate gear wherein rotation of a rotating shaft of a DC motor is transmitted to a pinion in a one-way rotational direction by an overrunning clutch, and an intermediate gear supported rotatably and forward-and-backward slidably by an intermediate shaft retained by a front bracket through a bearing and in mesh with the pinion, meshes with a ring-gear of an internal combustion engine by a forward movement thereof thereby starting the internal combustion engine, characterized by that; a storage for a lubricant is provided at a middle portion of the intermediate gear in the axial direction, which is fixed to an inner diameter portion of the intermediate gear; and dust seals are provided in a bearing with metal back supported by the intermediate shaft and at both ends of the inner diameter portion of the intermediate gear.

Abstract: A power tool with a two-part housing has a drive motor with a pinion gear on the motor shaft. A plastic cylindrical ring gear is fixed to the motor in coaxial surrounding relationship with the pinion gear and has attachment lugs which fit between the two parts of the tool housing and are fixedly secured to each. A plastic gear carrier frame is insert molded on a splined end of a metal output shaft and is receivable within the ring gear and has radial slots for respectively receiving pins which respectively rotatably mount three planet gears in meshing engagement with the pinion gear and the ring gear. The carrier frame has a hollow stub shaft portion which receives the pinion gear therethrough, the stub shaft portion having an elastomeric O-ring seated in a circumferential groove therein for press-fitting a ball bearing thereon, the ball bearing being in turn press-fitted in a seat in the ring gear to support the planet gear assembly.

Abstract: In an epicycle reduction gear type starter device comprising a ring-shaped internal gear 20 which is molded from resin and secured to a front frame so as to engage with planet gears driven by a DC motor, the internal gear 20 has ribs 21 in the outer periphery of an annular inner portion and which are substantially equal in thickness and are arranged at substantially equal angular intervals, and a cylinder 22 which is small in wall thickness to which the outer radial edges of the ribs are connected, locking protrusions 23 are formed on the cylinder 22 which are locked to the front frame so as to prevent the rotation of the internal gear, and through-holes 24 are formed in the locking protrusions 23, respectively, into which through-bolts are inserted to secure the DC motor and the front frame.

Abstract: A starting motor with an intermediate gear wherein rotation of a rotating shaft of a DC motor is transmitted to a pinion in a one-way rotational direction by an overrunning clutch, and an intermediate gear supported rotatably and forward-and-backward slidably by an intermediate shaft retained by insertion holes in a front end portion and a first back end portion of a front bracket and in mesh with the pinion, meshes with a ring-gear of an internal combustion engine by a forward movement thereof thereby starting the internal combustion engine, characterized by that; a polygonal hole is provided at a second back end portion of the front bracket communicating to the insertion hole in the first back end portion thereof; a spacer composed of a metallic material or a synthetic resin material, a section of which is a polygon, is inserted into the polygonal hole and fixed thereto blocking rotation thereof; a back end of the spacer is received by a front end of a yoke of the starting motor contacting the front end of

Abstract: An engine starter having an internal liner which carries forward the motor and gear reducing assembly in unison to engage the engine simultaneously providing a limited power rotation to the pinion and subsequently full power to the engine starter once engaged at movement of the liner performs the valving function to permit the so-called "soft" starter engagement.

Abstract: In order to provide a starter motor with an intermediate gear which can secure a good engaging performance for a pinion, an intermediate gear and a ring gear to thereby eliminate the strange sound of the intermediate gear and to reduce the wear of a bearing of the intermediate gear as well as the wear of the teeth of the pinion and intermediate gear, according to the invention, there is provided a starter motor with an intermediate gear in which the shift coefficient of a pinion is set smaller than the shift coefficient of the intermediate gear to thereby reduce a difference between two kinds of engagement pressure angles respectively obtained between the pinion and intermediate gear as well as between the intermediate gear and a ring gear.

Abstract: The specification discloses a starter drive for starting engines. In one embodiment, a drive gear having a recess on a side thereof transfers motion from a starting motor to a sprag and a rim located in the recess. The rim is integrally formed with an idler gear which in turn transfers its motion to the crankshaft of the engine. After startup, the sprag permits the idler gear and rim to turn independently of the drive gear.

Abstract: A starter for an internal combustion engine including mechanical components subject to an impact load during operation including a shift lever, internal gear, gear cover formed integrally with the internal gear, front case, center bracket, and brush holder disposed in a rear bracket. At least one of the mechanical components is formed of a synthetic resin having a glass transition temperature greater than 90.degree. C. such as an aromatic copolymer and nylon series, whereby a workability and an impact load absorbing capacity of the mechanical components as well as the bending rupture strength are capable of withstanding an impact load caused by an abnormal operation of the starter at a high environmental temperature greater than 150.degree. C.

Abstract: In a starter unit, the internal gear frame of an epicycle reduction gear is set rotatable with respect to the front bracket, and a first over-running clutch is made up of a clutch outer fixed to the front bracket, and a clutch inner which is the front end portion of the internal gear frame, and a second over-running clutch which is a conventional over-running clutch is mounted on the output shaft. The provision of the two over-running clutches eliminates the difficulty that, when the start switch is turned on during the inertial rotation of the engine or starter unit, the pinion is reengaged with the ring gear, so that abnormal shock is applied to the side of the starter unit to damage the rotation transmitting members.

Abstract: A planetary speed reduction gear type starter comprising a planetary speed reduction gear unit and a DC motor is designed as follows: In the case where the motor is smaller in outside diameter than the planetary speed reduction gear unit, the inside diameter of the yoke is accordingly reduced; that is, the front end portion of the yoke is increased in inside diameter into a large diameter portion. The planetary speed reduction gear unit is fitted in the large diameter portion, with the front end of which a front bracket is engaged. Thus, only one kind of front bracket can be used for a plurality of planetary speed reduction gear type starters different in reduction gear ratio.

Abstract: A coaxial engine starter comprises an electric motor having an armature winding of a single turn and a hollow armature rotary shaft for generating a rotational force for starting an engine. The starter also comprises an over-running clutch mechanism disposed within the hollow armature rotary shaft for preventing the occurrence of an excessive-speed of the armature and having a pinion having a gear teeth number equal to or less than seven for engaging with a ring gear of an engine upon starting of the electric motor. A solenoid switch is also disposed behind the electric motor for moving a pinion shaft forward and supplying an electric power to the electric motor.

Abstract: In a starter system for an internal combustion engine using a planetary reduction gear unit, the internal gear of the planetary reduction gear unit, the center bracket accommodating the internal gear and the pinion cover are joined together so as not to rotate relative to one another by using radial projections provided in the outer circumferential surface of the internal gear which are passed through openings provided in the center bracket and received by associated recesses provided in the pinion cover. The three members are thus prevented from rotating relative to one another with a simple structure which is also easy to assemble. The projection of the internal gear may also be used for securing an annular seal member interposed between an axial end surface of the internal gear and the corresponding shoulder surface of the center bracket.

Abstract: In a starter system for an internal combustion engine, an input member of an overrunning clutch is provided with an annular shoulder surface abutting an annular end surface of a cylindrical boss portion of a reduction gear unit casing when the overrunning clutch is at a rest position, and a cylindrical sleeve portion extends from the annular shoulder surface towards the reduction gear unit so as to be closely fitted on the cylindrical boss portion of the reduction gear unit casing. Thus, water and other foreign matters are not only shut off by these mutually abutting annular surfaces, but also prevented from reaching this region by the cylindrical sleeve portion closely fitted on the cylindrical boss portion of the reduction gear unit. Also, the centrifugal force prevents water and other foreign matters from reaching this area when the starter is actuated and the two annular surfaces are not in contact.

Abstract: An intermediate gear type starter comprises a movable coupling body which is mounted on the intermediate shaft in such a manner as to slide together with the intermediate gear. The movable coupling body comprises: a locking portion which is engaged with the over-running clutch: and a cover portion for closing the opening formed on the internal combustion engine side. The over-running clutch is axially coupled to the intermediate gear through the movable coupling body.

Abstract: An engine starter apparatus comprises a housing (9), a d.c. electric motor (2), an output rotary shaft (3) with a pinion (7), and a planetary speed reduction gear (5). The planetary speed reduction gear (5) comprises a sun gear (11), an internal gear (20), a plurality of planetary gears (12) disposed between the sun gear (11) and the internal gear (20), and a planetary gear carrier (10) connected to the output rotary shaft (3) for rotatably supporting the planetary gears (12). The internal gear (20) comprises a ring-shaped internal gear member (20a), and elastic reinforcing ring member (21,22; 24) for elastically supporting the internal gear member (20a), thereby to increase rigidity of the internal gear member (20a).

Abstract: In an overhang type starter, an output shaft having a pinion for rotating a ring gear of an engine is arranged so as to move forwardly through an interlocking member by a shift lever which is turned by an electromagnetic switch. Accordingly, it is not necessary to move an over-running clutch large in weight by the shift lever, so that the electromagnetic switch can be made compact in size.

Abstract: A coaxial starter including: an electric motor, an output shaft having a pinion mounted to the front end thereof and engaging the pinion with a ring gear in an engine when it is advanced and to disengaging the pinion from the ring gear when it returns. An electromagnetic switch is provided for advancing the output shaft when an excitation coil is energized and for closing a contact in a circuit electric motor. A planetary gear reduction device reduces the rotation of an armature shaft of the motor and an over-running clutch transmits the reduced rotation to the output shaft.

Abstract: In a coaxial type starter, the rear end portion of the clutch inner of its overrunning clutch is supported through a bearing on the front end portion of the armature rotary shaft, and the front end portion is supported through a bearing on the front bracket. Both end portions of the clutch outer are supported through bearings on the clutch inner, and the clutch outer is fitted into the cylindrical portion of the planetary gear frame in such a manner that the clutch outer and the cylindrical portion slide relative to each other when torque larger than a predetermined value is applied thereto. The clutch inner and the clutch outer are maintained coaxial at all times, and the clutch inner and the bearings or rollers are prevented from being abnormally worn out.

Abstract: A starter system for an internal combustion engine having a casing provided with a mounting circumferential surface adapted to be substantially closely fitted into an associated mounting bore provided in the engine or a transmission housing associated therewith, and a mounting flange extending radially from the casing and provided with a mounting end surface perpendicular to a longitudinal line of the output shaft of the starter system and spaced from the mounting circumferential surface along the longitudinal line. Because of the presence of the distance between the mounting end surface of the mounting flange and the mounting circumferential surface of the starter casing closely fitted into the mounting bore, the reaction force acting on the pinion is prevented from being amplified and transmitted to the mounting surfaces by means of an undesirable lever action.

Abstract: A starter with a reduction mechanism provided between a motor and a pinion clutch includes a pinion shaft mechanically coupled to the inner portion periphery of a clutch inner of the pinion clutch in such a manner as to be movable in the axial direction thereof, and a pinion provided at one end of the pinion shaft. The starter further, includes first helical splines provided between the clutch inner portion of the pinion clutch and the pinion shaft, and second helical splines provided at one end of the pinion shaft such that the pinion shaft is mechanically coupled to the pinion therethrough.

Abstract: An intermediate gear type starter motor of the present invention comprises an electric motor with an armature rotary shaft, an overrunning clutch to which rotation of the rotary shaft is transmitted directly or through a speed reducing mechanism, an intermediate gear and a shift coupler. The overrunning clutch rotating a pinion in one way is provided at the front end of the overrunning clutch and is moved axially by a shift lever which is operated by an electromagnetic switch. The intermediate gear is rotatably and axially movably mounted on a supporting shaft arranged in parallel with the axis of the rotary shaft. The intermediate gear is in engagement with the pinion and is moved forwardly to engage with the ring gear of an internal combustion engine.

Abstract: The starting device for an internal combustion engine includes a housing, an electrical drive motor (10) with a drive shaft (16), a starting pinion (12) for engagement with a rim gear of the engine and an intermediate gear (11) making an operative connection between the drive shaft and the starting pinion. For damping or absorption of the shocks and preventing fractures arising from the compression stroke of the starting engine the starting pinion (12) is connected directly or indirectly nonrotatably with the gear shaft (24) of the intermediate gear (11) and the gear shaft (24) is coupled with a hollow wheel (21) via an elastic damping ring (34). The drive shaft (16) meshes with its outer toothing (19) in the internal toothing (20) of the hollow wheel. The hollow wheel (21) is received in a bearing (25) in the housing and the damping ring (34) is made of rubber or plastic, is inserted in the hollow wheel (21) and, surrounds the gear shaft (24 ).

Abstract: An engine starter/generator has a rotor which rotates on excitation caused by an exciting winding, a speed reducer which reduces the speed of rotation of the rotor, a first clutch which transmits the rotation of the rotor, the speed of which has been reduced through the speed reducer, to an output shaft of an engine, and a second clutch which is disposed between the engine output shaft and the rotor to connect together these two members when the speed of rotation of the engine output shaft is greater than that of the rotor. The speed reducer and at least either one of the first and second clutches are disposed substantially axially in line with one another. This arrangement reduces the radial dimension of the engine starter/generator. It can, therefore, be disposed with in the engine room of a vehicle without difficulty.

Abstract: In a starter, the pinion, which is rotated by torque of an electric motor, is slid axially by the plunger of an electromagnetic switch and is pushed against the engine ring gear by a conically coiled compression coil, which allows employment of a small electromagnetic switch. Further, in an electromagnetic switch in which the plunger confronted coaxially with the stationary iron core slidably supporting a rod with a movable contact is moved towards the stationary iron core by electromagnetic force, a conically coiled spring is interposed between the plunger and the stationary iron core in such a manner that the spring is substantially coaxial with the plunger and the iron core, so that the playing of the rod is prevented.

Abstract: In a starter unit with an planetary gear speed reducer, the outer cylindrical surface of a cylindrical portion which is axially protruded from the carrier in the speed reducer, and the inner cylindrical surface of a radially extended wall portion of the clutch outer are engaged with each other in such a manner that they are slidable with each other with a predetermined rotation torque, and the end portion of the cylindrical portion is engaged with an axially extended cut formed in the outer cylindrical surface of the end portion of the clutch inner with a small clearance, whereby the engagement region of the carrier and the clutch outer can be increased in area, thus being able to positively and accurately cut the transmission of power attributing only to impact load.

Abstract: An engine starter apparatus comprising first and second noncircular gears, a pinion, and a starter motor. The pair of noncircular gears is interposed between a crankshaft and a ring gear of an engine, and when the speed of rotation of the first noncircular gear is kept constant, the second noncircular gear rotates the crankshaft while cyclically causing a change in the angular velocity due to its profile. Since the second noncircular gear is positioned so that the change in the angular velocity caused by its rotation can cancel a change in torque of the crankshaft, the change in the torque of the engine are not transmitted to the starter motor, thereby operating the starter motor at constant current at all times, providing such additional advantages as smaller and lighter starter motor design and reduced noise.

Abstract: An engine starter where a pinion, which is engaged or disengaged with a ring gear of the engine to be started, is formed as an integral part of a drive shaft at an end of the drive shaft which is movable in the axial direction thereof while being rotated by an electric motor. The engine starter has no restriction of the root thickness of the pinion or the number of teeth of the pinion, and has a large gear ratio to the ring gear.

Abstract: A system for remotely starting model toy internal combustion engines, used for propulsion of the model toy, such as an airplane, helicopter, boat, automobile, or other similar vehicles. The starter mechanism being contained in a single case, coupled to a single gear attached to the model engines crankshaft. The starter case being sufficiently small so as to allow it to be mounted directly to the model toys internal combustion engine. An electrical starter motor attached to the starter mechanism case, for cranking the engine, operating from the internal batteries on board the model toy. A remotely controlled servo starting circuit that energizes the engines ignitor plug, allowing sufficient preheat time, and activates the starter motor, from signals provided by the radio receiver on board the model toy vehicle.

Abstract: A gear reduction mechanism is provided with a rotatable shaft supported by a pair of spaced apart bearings in a one piece retainer having coaxially aligned holes for receiving said bearings. A potentiometer is supported from the same retainer and is provided with an input axle adjustably connected to the shaft to provide an output signal indicative of the angular position of the shaft. The adjustment may take place through a vent hole in the housing of the mechanism which has a removable filter therein.

Abstract: A planet gear type reduction gear device comprises a casing, a rotating shaft rotatably supported in the casing, a sun gear formed at an outer circumferential portion of the rotating shaft, a planet gear supported by a support pin and meshed with the sun gear, and an internal gear wheel attached to the inner circumferential portion of the casing and meshed with the planet gear whereby the planet gear revolves around the sun gear while it rotates on the support pin, characterized in that at least one projection is formed at an end surface in the axial direction of the internal gear wheel, and at least one recess having the shape corresponding to the projection is formed in the casing so that the internal gear wheel is fixed to the casing by the mutual engagement.

Abstract: A coaxial engine starter comprising a d.c. electric motor (11), a planetary speed reduction gear unit (20), a unidirectional clutch and a pinion. The planetary gear unit (20) includes a large-diameter inner gear member (17) mounted to the front end of the motor housing (11a). The clutch and the pinion are housed within a front machine frame (21) attached to the inner gear member. The inner gear member (17) is securely held in place between the motor housing (11a) and the front machine frame (21) by U-shaped connectors (22) and through bolts (23) fastening the front machine frame (21), the inner gear member (17) and the motor housing (11a) together. Alternatively, the inner gear member (27; 37) including gear teeth (27a; 38a) may be directly thread-engaged by the through bolts (32) positioned radially inward of the inner gear teeth (27a; 38a) and the front machine frame (29) may be attached to the inner gear member (27; 37).

Abstract: A rotary output shaft for a vehicle starter motor having a planet gear speed reducing device is formed by forging a steel blank to form a product having a shape similar to the rotary output shaft but having slightly larger outer dimensions, by subjecting a planet gear carrier portion 7c of the forged entire product to copper plating to prevent carburization, by subjecting the product to a carburizing treatment, and by finishing the locally carburized portion of the product.

Abstract: An engine starter is equipped with a motor having a cylindrical armature rotating shaft (3), a clutch mechanism (15) which transmits the rotational force of the motor, an output rotating shaft (17) which is disposed so as to mesh with the clutch mechanism (15) and be movable in the axial direction, and a solenoid switch (25) which has a moving member (32) which pushes the output rotating shaft (17) in the axial direction by electromagnetic force, the switch also causing a movable contact to contact a stationary contact and supply current to the motor. The output rotating shaft and the front portion of the moving body (32) of the solenoid switch (25) are both inserted into the cylindrical bore of the armature rotating shaft (3) from opposite ends, a sleeve bearing (23) is fit into the cylindrical bore and journals the output rotating shaft (17), whereby a cylindrical engine starter is obtained having a short overall length.

Abstract: A starter motor comprising a pinion (3) which engages at an inner circumference of a gear portion thereof with an outer circumference of an output rotary shaft (4), and a cylindrical member (15) integrally disposed behind the pinion. A front end portion of a clutch inner member (9b) of an over-running clutch unit (9) is in sliding abutment with an outer circumferential surface of the cylindrical member, and the inner circumferential surface of the cylinder member is in splined engagement with the output rotary shaft.

Abstract: A coaxial type starter device comprises an overrunning clutch device having a clutch inner member and a pinion shaft with a pinion at an end, the pinion shaft being inserted in the clutch inner member so as to be engageble therewith by helical splines formed at the pinion shaft and the clutch inner member so that a torque is transmitted from the clutch inner member to the pinion shaft and a radial load by the pinion shaft is borne by the helical spline of the clutch inner member, wherein the helical splines of the clutch inner member and the pinion shaft have radially contacting portions wherein the outer surfaces of the teeth of the helical spline of the clutch inner member are in slide-contact with the corresponding parts of the helical spline of the pinion shaft, and have radially non-contacting portions wherein the other portions of the helical spline of the clutch inner member face, with gaps, the corresponding parts of the helical spline of the pinion shaft, and wherein the total surface area of the rad

Abstract: A starter motor which is improved in waterproof performance. The starter motor comprises an output rotary shaft, a stationary frame, a ball bearing secured to the frame, and a clutch pinion moving member mounted in a coaxial relationship to the rotary shaft between an outer periphery of the rotary shaft and the ball bearing for sliding movement over a predetermined distance in an axial direction thereof. The clutch pinion moving member has a pinion at a front end thereof, and an oil seal is mounted at a location on the frame forwardly of the ball bearing and extending toward the clutch pinion moving member to seal a location between the frame and the clutch pinion moving member. The oil seal has a radial section of an L-shape having an axial side and a radial side extending from a front end of the axial side. It may have a plurality of axially extending drain slots or drain holes formed in a circumferentially spaced relationship on an inner periphery of the axial side thereof.

Abstract: A coaxial engine starter comprising an electric motor having an armature rotary shaft 23, an output rotary shaft 5 axially slidably supported in an axial alignment relationship with the armature rotary shaft and a pinion 10 disposed on the front end of the output rotary shaft. The starter also comprises a planetary speed reduction gear 7 having a sun gear disposed on the armature rotary shaft, a plurality of planetary gears rotatable around the sun gear and a stationary internal gear engaging the planetary gear, and an over-running clutch 21 having a clutch outer member supporting the planetary gears and a clutch inner member slidably coupled to the output rotary shaft and having front and rear ends. The clutch inner member is rotatably supported at its front end by a first bearing 11 supported by the machine frame 8 and at its rear end by a second bearing 25 mounted on the armature rotary shaft in front of the sun gear of the planetary speed reduction gear.

Abstract: A starter for an automotive engine wherein the front bracket 9 forming part of the housing of the starter is provided with first and second drainage port 12, 16. An electromagnetic switch a of the starter is situated substantially horizontally, alongside of the motor portion. The first drainage port is formed at the bottom of the switch box portion 10 of the front bracket accommodating the front end portion of the plunger 8a of the electromagnetic switch, to communicate the interior of the switch box portion to the exterior. The second drainage port communicates with to the first drainage port from the interior of the lever box portion 11 which accommodates the fulcrum portion 7a of the lever transmitting the movement of the plunger of the electromagnetic switch to the pinion assembly of the starter axially slidably supported on the output shaft coupled to the rotor shaft of the motor of the starter.

Abstract: An engine starter comprising an electric motor having a hollow armature rotary shaft, a solenoid switch for energizing the electric motor and having a push rod extending into the hollow armatur rotary shaft, an output rotary shaft having a pinion disposed on a front end thereof, the output rotary shaft being axially slidable relative to the armature rotary shaft to move the pinion into and out of engagement with an engine ring gear. A clutch outer member of an over-running clutch unit is mounted on the output rotary shaft and is connected to the electric motor for being rotated thereby, and a clutch inner member driven by the clutch outer member through a plurality of rollers is provided with helical splines on its inner circumferential surface.

Abstract: A starter motor with a planetary speed reduction gear in which a bolt for securing an electric motor unit to a front bracket passes at an outer circumference of an internal gear constituting a planetary speed reduction gear. The internal gear is provided in its outer circumference with a recessed groove with its bottom located on a radial axis passing through the center of one of the teeth of the internal gear and extending in the axial direction, and that a stem of the bolt is partly engaged by the recessed groove.

Abstract: An engine starter comprises an elongated pinion shifter unit 23 axially slidably mounted on an output rotary shaft 21 coupled to a d.c. motor for rotation therewith, and includes a pinion 8 mounted at a first end of the unit and a unidirectional clutch 6 disposed at a second end. A first sleeve bearing 24 is disposed between the first end of the pinion shifter unit and the output rotary shaft, and a second sleeve bearing 25 is disposed between the second end of the pinion shifter unit and the output rotary shaft. The first and the second sleeve bearings are spaced apart from each other, and the first sleeve bearing is made of a material wear resistant under a relatively large load, such as an iron-based material, and the second sleeve bearing is made of a material wear resistant under a high speed rotation condition, such as a copper-based material.

Abstract: The invention is directed to a starter arrangement for an internal combustion engine wherein a manual starter device is combined with an electrical starter. Handheld portable tools such as motor-driven chain saws, brushcutters and the like are driven by two-stroke engines which can be started with a suitable manual starter device such as a pull-rope starter. Pull-rope starters require a forceful yank on the pull rope which is difficult for persons having inadequate physical strength. For this reason, electrical starters are provided to facilitate starting such handheld portable tools. The invention combines an electric starter and a manual starter device wherein the overrun clutch of the manual starter device includes a latching device and a drive member and is combined with a further latching device which coacts with a drive member driven by the electric starter.

Abstract: A coaxial type starter device comprises a motor having a dubular armature rotary shaft 22a, a rotary output shaft 3 partially inserted in the tubular armature shaft from its one side, the rotary output shaft being provided with a pinion 4 to be engaged with a ring gear of an engine, a driving force transmitting unit, disposed at one side of the motor and between the armature rotary shaft and the rotary output shaft, comprising a roller type overrunning clutch 30 and a planet gear wheel type speed reducing mechanism 10 for reducing a revolutional speed of the armature rotary shaft, and an electromagnetic switch, disposed at the other side of the motor, which causes the pinion of the rotary output shaft to engage with or disengage from the ring gear of the engine.