Abstract: An electromagnetic fluid pump having a generally cylindrical housing divided into an inlet chamber, an outlet chamber and an intermediate chamber by a pole member and a separator plate. The pole member is sealingly attached to the wall of the housing and divides the inlet chamber from the intermediate chamber. A first O ring provides a gas tight seal between the pole member and a piston guide which provides a fluid passageway between the inlet chamber and the outlet chamber. The separator plate is sealingly attached to the end of the piston guide adjacent to the outlet chamber and separates the outlet chamber from the intermediate chamber. A second O ring provides a gas tight seal between the internal wall of the housing and a rim portion of the separator plate. An electrical connector having a connector pin provides electrical power to an electronic circuit periodically energizing a solenoid coil to reciprocate a piston disposed in the piston guide.

Abstract: An engine starter for engagement with the starting gear of an engine to be started. The engine starter has a power shaft rotatably driving a secondary driving clutch member through mutually engageable straight splines. The secondary driving clutch member drives the secondary driven clutch member through mutually engageable inclined dentil teeth which, in turn, rotatably drive a sleeve through mutually engageable helical splines. The sleeve rotatably drives a primary driving clutch member through mutually engageable helical splines which, in turn, drive the pinion gear through mutually engageable primary dentil teeth. An open ended housing is provided to enclose the several clutch members, the housing being provided with removable abutment means for containing the several clutch members therein. A first biasing element is provided between the secondary driven clutch member and the primary driving clutch member, and second biasing means are provided between the secondary driven clutch member and the housing.

Abstract: A two stage positive shift starter drive system for an internal combustion engine is disclosed. A pair of electrical switches are sequentially actuated by an actuator solenoid engaging the starter drive's pinion gear with the engine's ring gear. The first switch actuated after a predetermined displacement of the solenoid's armature applies electrical power to the cranking motor through a resistance connected in series with the cranking motor and connected in parallel with the solenoid pull-in coil. The resistance reduces the electrical power applied to the cranking motor and the potential across the solenoid pull-in coil thereby reducing the rotational speed and the engagement force applied to the pinion gear. The end of the armature travel closes the second switch applying full power to the cranking motor permitting normal cranking of the engine with the pinion gear fully engaged with the ring gear.

Abstract: An engine starter drive assembly is disclosed of the type including a pinion gear moveable from a rest position to a driving position to engagement with gear teeth formed on an engine flywheel, the pinion adapted to be rotated by the starter motor in order to start the engine after engaging the flywheel teeth. In order to be properly located with respect to the flywheel gear teeth, the pinion gear moves axially into engagement with a fixed stop located at a predetermined position to produce proper engagement of the pinion with the flywheel teeth. The starter also includes an antidrift compression spring and washer assembly biasing the pinion gear against axial movement out of the retracted position. The disclosed starter assembly features a shielding cup supported on the fixed stop and extending towards the pinion gear hub extension to enclose the space therebetween, preventing the build-up of foreign matter tending to interfere with the axial movement of the pinion gear.

Abstract: An engine starter gear of the positive shift type has a clutch to provide driving, indexing, means for keeping the clutch teeth in engagement during the indexing function, and a centrifugal separator to separate clutch teeth in an overrunning condition. The separator includes spherical members retained in an annular retainer member, which spherical members move radially outward of the shaft as the engine accelerates to transmit axial thrust against an inclined surface on an annular ring member to displace the driving clutch member from the driven clutch teeth. The axial thrust on the annular ring member causes separation of the clutch teeth in an overrunning or overspeed condition.

Abstract: A two stage positive shift starter drive system for an internal combustion engine is disclosed. A pair of electrical switches are sequentially actuated by an actuator solenoid engaging the starter drive's pinion gear with the engine's ring gear. The first switch actuated after a predetermined displacement of the solenoid's armature applies electrical power to the cranking motor through a resistance connected in series with the cranking motor and connected in parallel with the solenoid's pull in coil. The resistance reduces the electrical power applied to the cranking motor and the potential across the solenoid pull-in coil thereby reducing the rotational speed and the engagement force applied to the pinion gear. The end of the armature travel closes the second switch applying full power to the cranking motor permitting normal cranking of the engine with the pinion gear fully engaged with the ring gear.

Abstract: An engine starter drive assembly is disclosed of the type including a pinion gear moveable from a rest position to a driving position in engagement with gear teeth formed on an engine flywheel, the pinion adapted to be rotated by the starter motor in order to start the engine after engaging the flywheel teeth. In order to be properly located with respect to the flywheel gear teeth, the pinion gear moves axially into engagement with a fixed stop located at a predetermined position to produce proper engagementof the pinion with the flywheel teeth. The starter also includes an antidrift compression spring and washer assembly biasing the pinion gear against axial movement out of the retracted position. The disclosed starter assembly features a shielding cup supported on the fixed stop and extending towards the pinion gear hub extension to enclose the space therebetween, preventing the build-up of foreign matter tending to interfere with the axial movement of the pinion gear.

Abstract: A direct cranking starter device for an internal combustion engine has a rotatable driving member to be connected to a starting motor and an overrunning clutch for engaging the driving member to the crankshaft of the engine with a movable shock absorbing member interposed between the driving member and overrunning clutch to prevent initial starting torque intermittent shock loads generated upon initial activation of the starting motor from being transmitted through the driving member to the overrunning clutch.