Abstract: In a starter, a plate that turns with a pinion moving body is disposed behind the pinion moving body. The plate has a receiving part that engages with the lower extension of a rotation restricting member for restricting the rotation of the pinion moving body until a pinion gear engages with a ring gear. In a power supply circuit for a starter motor, a first switch and a second switch are provided. The first switch turns on first to energize the starter motor. When the pinion gear engages with the ring gear thereafter, the second switch turns on to energize further the starter motor by short-circuiting a resistor wire.

Abstract: A starter assembly for starting an engine is provided incorporating a mechanical diode in the drive train between the starter motor and the engine, including two coaxial plates with facing surfaces that are linked by pivoting members. The pivoting members are recessed into a facing surface of the first plate. They pivot outward under spring force from the facing surface of the first plate to engage slots in the facing surface of the second plate. This allows the first plate to drive the second plate, but also allows the second plate to overrun the first plate.

Abstract: A starting device for an internal combustion engine is described comprising a rotating electric machine the rotor of which is axially translatable with respect to the stator between a rest position and a working position. The rotor is fixed to a transmission shaft bearing a pinion capable of engaging with a corresponding toothed ring of the internal combustion engine when the rotor is in the working position. The starting device is further provided with a controlled-conduction semiconductor device disposed in series with the windings of the stator and the rotor, and an electronic control circuit for the semiconductor device for controlling the intensity of the current supplied to the electric machine.

Abstract: A starter comprising: a motor 24, a clutch 21, which is connected to the motor 24; a pinion gear 22, which is connected to the clutch 21 and engages and disengages with the ring gear of the engine; an electromagnetic switch 2, which switches on and off an electric current for the motor 24; a reciprocating shift lever 4, which is linked to the electromagnetic switch 2; and lever springs 105, which press the shift lever 4 so that the pinion gear 22 is elastically pushed against and engaged with the ring gear; wherein the lever springs 105 are arranged symmetrically with respect to a plane 25 which includes the central axis of the motor 24 and the central axis of the electromagnetic switch 2, the lever springs 105 are attached to cylindrical portions 106b which are a plurality of protrusions on the plate 106, and the lever springs 105 and the shift lever 4 come into contact through a plate 106.

Abstract: In an electromagnetic switch for a starter, a plunger is housed to face a grounding plate through an air gap in the inner circumference of an attraction coil. When the attraction coil is energized and magnetic flux flows in the magnetic circuit, the plunger is attracted toward the grounding plate by the magnetic force. The plunger has a hollow recess as a variable magnetic resistance member at its bottom end which is opposite to the air gap. The hollow recess extends inwardly from the bottom surface of the plunger by a predetermined length and is closed by a plug body fitted in the opening to have a closed hollow space. The variable magnetic resistance member may be provided by a reduced diameter part in place of or in combination with the hollow recess.

Abstract: A starter has a motor, output shaft driven by the motor, a pinion moving body mounted on the output shaft and engageable with a ring gear, an electromagnet switch, and a rotation restricting member driven by the electromagnet switch to engage and restrict rotation of the pinion moving body until engagement of a pinion gear with the ring gear. To protect the pinion rotation restricting member, continued engagement of the rotation restricting member with the pinion moving body is released by a guide when the pinion moving body rotates a predetermined angle. Further, to protect the pinion moving body, the pinion moving body is advanced closely to the ring gear and thereafter the motor is allowed to rotate so that the pinion engages the ring gear at low rotation speeds.

Abstract: A contactor for a motor vehicle starter comprises a contactor coil, a movable contactor core actuated by a control rod, and a fixed contactor core. It also has an electromagnetic auxiliary control relay which includes a movable relay core carrying a movable contact ring which is arranged for cooperation with at least one pair of fixed relay contacts, carried by a fixed annular contact carrier plate. The relay coil, the contact carrier plate, and the movable contact ring are arranged in axial succession, in that order towards the front of the contactor, and are disposed between the movable contact of the contactor and the fixed core, so that the relay and the contactor are closed in the same, forward, direction.

Abstract: In a starter having a planetary gear reduction mechanism and a shock absorbing device, a first friction plate of the shock absorbing device is engaged with an internal gear of the reduction mechanism to restrict the internal gear from rotating. A space is provided radially between the internal gear and a housing to allow rotation of the internal gear upon application of an impact shock. A cylindrical member which is harder than the housing is disposed between the space relatively movably against the housing and the internal gear so that the internal gear is restricted from directly contacting the housing.

Abstract: In a starter, a planetary gear reduction mechanism has pins supporting planetary gears and directly fitted into an outer member of a one-way clutch. The outer member rotates with the revolution of the planetary gear. An internal gear engaged with the planetary gears is connected with a rotary disk of a shock absorbing device disposed on the outer periphery of the one-way clutch through a connecting member and an elastic member. The connecting member has engaging projections engaged with the elastic member within the connecting recess of the internal gear. The engagement projections are housed within the connecting recess with some clearance provided in the radial direction. The internal gear is thus held radially movably with respect to the rotary disk via the connecting member.

Abstract: In an engine starter including a solenoid device for actuating a switch for the electric motor and to drive the pinion into mesh with the ring gear of an internal combustion engine, the solenoid device includes an armature outer member which moves in the direction to push out the pinion against the spring force of a first return spring in the energized state of the solenoid device, and an armature inner member which is resiliently urged by a second return spring, and is telescopically disposed with respect to the armature outer member with a coil spring interposed coaxially between them. An annular spring retainer is press fitted into the inner bore of the armature outer member to receive a corresponding coil end of the coil spring.

Abstract: In a starter for an internal combustion engine, comprising: a pinion; shift mechanism for moving the pinion into mesh with a ring gear of the engine; a housing for accommodating the pinion and the shift mechanism; an electric motor for rotating the pinion; a substantially cylindrical motor casing for accommodating the electric motor; a contact unit for selectively providing electric power to the electric motor; a brush holder stay disposed between the housing and the motor casing, the brush holder stay having a cavity opened toward the motor casing and the contact unit being mounted in the cavity; and a cover for covering the cavity of the brush holder stay, the cover is made of a flexible member so that the cover is naturally curved, and the cover is disposed between the brush holder stay and the motor casing with its concave surface facing the brush holder stay so that the cover is pushed toward the brush holder stay by an axial end of the motor casing.

Abstract: A starter in which a flange member is mounted to the starter body in accordance with the mounting conditions of the engine. An output shaft is disposed coaxially with the rotating shaft of the motor, and a front housing of the overhang type is used. Changing the mounting angle does not change the position of the motor, so that by simply replacing the flange member, a common front housing can be used to allow mounting in accordance with a larger number of mounting conditions. In addition, the tabular shape of the flange member allows die costs to be reduced.

Abstract: A retreat restricting member for restricting the retreat of a pinion in an advanced state of the pinion on an output shaft and in a resulting meshed state of a pinion gear with a ring gear is engaged with a pair of pins rotatably, the pins being each attached to a thrust ring. In a rotation restricting member for restricting the rotation of the pinion, upon meshing of the pinion gear with the ring gear, the front end of a rotation restricting bar is disengaged from a recess of a rotation restricting plate and falls to the rear end side of the thrust ring, thereby releasing the rotation-restricted state of the pinion. Further, engaging portions of the rotation restricting member come into engagement with engaging recesses of the retreat restricting member to hold the posture of the member, thereby inhibiting the retreat of the pinion.

Abstract: A flywheel system having permanent magnets 20 disposed on a flywheel 10 rotating about a shaft 12 is provided with a stator 28 having an outer diameter which is oriented concentrically and shaped conically within a similarly shaped inner diameter of the flywheel 10 (and the magnets 20) and the stator 28 is slidably and rotatably mounted to a shaft 30 thereby allowing a gap g.sub.1 between the stator 28 and the rotor/flywheel 10 to be adjustable. When energy is being provided to (spin-up) or extracted from (spin-down) the flywheel 10, the stator is automatically forced to the left (FIG. 1) due to torque on the stator 28, thereby causing the gap g.sub.1 to be small to provide strong electromagnetic interaction between the stator 28 and the flywheel 10. Conversely, when the flywheel 10 is freewheeling, the stator 28 is forced to the right by a spring 40 causing the gap g.sub.1 to increase to a distance large enough to minimize electro-magnetic drag on the flywheel 10.

Abstract: A starter which optimally maintains the characteristics of a spring which presses a brush and reduces its axial direction length. A compressed coil spring is arranged around an outer circumference of a plunger of a magnet switch and the length of the spring can be set as long as the radial direction length of the magnet switch. The spring effectively uses the space around the outer circumference of the magnet switch, so the axial direction length of the spring need not be added to the axial direction length of the starter.

Abstract: A coaxial starting motor comprises a d.c. motor whose armature has a hollow rotary shaft projected at its end forwardly, and which has a rear end provided with an electromagnetic switch which is arranged to be coaxial therewith, and which has a movable core attracted by a fixed core on energizing an exciting coil to forwardly move a movable rod with the movable core and causing a movable contact supported by the movable rod to get in touch with a fixed contact wherein the electromagnetic switch has a fixed core partitioning a contact chamber and a movable core chamber so as to prevent contact powder from entering the movable core chamber and hamper the sliding motion of the movable core.

Abstract: A guide hole 16b is formed in the insulation cap 16 of a starter motor electromagnetic switch, and a coil terminal 30 inserted through the guide hole has one or more projections 30b formed at a location corresponding to the guide hole so that the projections are wedged against an inner surface of the hole, thus preventing any resonant vibrations of the terminal and the attendant severing of its attached lead wire 1a.

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: A contaminant proof structure for a starter for an engine, with the starter including a sliding portion between a sliding member and a support member supporting the sliding member disposed in a housing so that the sliding member can project into the outside of the housing through an opening formed in a wall of the housing. An atmospheric gas reservoir disposed in the housing between the support member and the wall of the housing around the opening, and a communication passage bypasses the sliding portion and communicates the atmospheric gas reservoir with an external atmospheric gas through a space at an opposite side of the support member to the atmospheric gas reservoir side. The sliding member is dimensioned such that a gap between the opening and the sliding member inserted in the opening is small.

Abstract: A coaxial starter comprising an electric motor which produces torque; a speed reduction planet gear mechanism which transmits the rotation of the armature shaft of the motor so that the rotational speed of the output portion of the mechanism is lower than that of the shaft; an overrunning clutch which transmits the output torque of the mechanism when the clutch is engaged; an output rotary shaft whose rear portion constitutes the inner member of the clutch; a pinion provided on the outside circumferential surface of the output rotary shaft so that the pinion is engaged with the ring gear of an engine as the torque of the output rotary shaft is received by the pinion; an electromagnetic switch provided around the pinion to move the pinion forward and energize the motor; and a spring provided between an actuator, which is moved forward when the switch is energized, and the pinion to push said pinion forward.

Abstract: An electric starting system for cranking an internal combustion engine that utilizes a starter having a solenoid that is provided with pull-in and hold-in coils. The solenoid includes a plunger which when shifted operates solenoid switch contacts and shifts a pinion into mesh with the ring gear of the engine to be cranked. The electric starting motor has series and shunt field coils and during cranking operation the shunt field is energized through the hold-in coil of the solenoid and the series field is energized through the pull-in coil of the solenoid. This mode of energization produces a small indexing torque that slowly rotates the pinion when end tooth abutment occurs between the pinion and the ring gear.

Abstract: A reduction gear type D.C. starter motor for an internal combustion engine including a planetary type reduction gear system mounted in a front bracket at a faucet joint portion between it and a rear bracket, the rear bracket and the yoke being integrally formed.

Abstract: A starter motor housing comprising a tubular housing formed by an annular wall having a thickened wall portion adjacent the stator winding of the starter motor. The stator cores abut against and are secured to the inner periphery of the thickened wall portion to increase the flux path and, thus, the effective flux energy produced by the stator windings. However, the thickened wall portion is disposed intermediate radially reduced wall end portions to reduce the weight and size of the motor housing. Preferably, the tubular housing is an iron casting.

Abstract: To permit manufacture of starter components with substantial tolerance, while maintaining the axial play of the armature of the starter within tight tolerances, and permit adjustment of the tolerance of the axial play after assembly of the starter component together, an end face (33) of the shaft (4) projects beyond the respective end bearing, which is retained a housing projecting beyond the bearing by the distance of an adjustment plug (29) slightly smaller than the longest shaft--in the light of tolerances--of the starter. An axial play compensation spacer in form of a washer or disc (FIG. 2--35), a ring (FIG. 3--35a) or a centrally held ball (FIG. 4--35b) is placed between the end face (36) of the plug and the end face (33) of the shaft, the plug being formed with an abutment surface (31) which engages an engagement surface (32) at the outside of the housing adjacent the bearing.

Abstract: An internal combustion engine is provided with an oil pumping system operatively driven from the starter motor which generates normal operating oil pressure prior to combustion. The starter motor is energized with a first, lower level of electrical energy during its precombustion oiling operation and a second, higher level of electrical energy during its engine-cranking operation to conserve electrical energy and facilitate meshing between the starter gear and the engine flywheel.

Abstract: A starter apparatus comprises a D.C. motor, a solenoid actuator, a hollow sleeve having at one end thereof a pinion and a one way clutch. A torque of an armature of the D.C. motor is transmitted through the one way clutch to the hollow sleeve and further transmitted to a ring gear of an engine, which is engaged with a pinion of the hollow sleeve, thereby performing a start up of the engine. The engagement or disengagement between the pinion and the ring gear is carried out by means that the solenoid actuator reciprocates only the hollow sleeve through a shift lever.

Abstract: A starter drive for internal combustion engines. The starter drive is mounted within the starter housing and connected to the motor driven shaft. The shaft has a screw thread formed thereon near the armature of the starter and a cylindrical end portion. A screw sleeve member cooperatively engages the screw thread of the motor driven shaft. A ring armature member is centrally mounted to the threaded screw member. A unidirectional clutch member connects the screw sleeve member, the ring armature member and the pinion gear. An engaging member holds the ring armature member to the starter housing when the pinion gear is advanced axially along the motor driven shaft by the rotation of the motor when the motor is activated. Thus, the pinion gear engages the engine ring gear such that the pinion gear is held in mesh with the ring gear and the total motor torque is transmitted to the ring gear until the motor is deactivated.

Abstract: An apparatus combination for improving the starting mode of a starter for an internal combustion engine is disclosed. The combination comprises a supporting means effective to support the starting motor armature, both for rotary movement about an axis within the field winding and for axial movement in response to the axially directed magnetic forces of the winding. Friction means are employed to sequentially engage each of two conical surfaces carried by the member to be driven by the starter motor, such sequential engagement being in response to the axial movement of the armature. Means are also disclosed to assist the frictional engagement between the conical surfaces of the driven member by use of a resilient ring which allows full metal-to-metal contact between the friction means and driven member, but also provides extended interengagement with the friction means by distortion of the ring along a tangent to the friction means.

Abstract: A clutch assembly for use in a high speed starter motor/turbine assembly wherein the elements thereof must be extremely well balanced. Opposing clutch elements are unitary rigid structures without moving parts. The starter motor rotor and one of the clutch elements are assembled as a unitary balanced structure for high speed rotation and axial movement to engage or disengage the other clutch element and its associated balanced turbine load.