Abstract: A compact electromagnetic clutch has a toothed armature connected to a driven hub and a toothed driving hub which are moved into engagement with each other upon energization of an electromagnet. A precompressed spring disposed between the bottom of a cylindrical cup attached to the armature and the head of a pin attached to the driven hub biases the armature away from the driving hub. The precompressed spring provides a force strong enough to overcome residual magnetism. The spring is further compressed when the armature moves into engagement with the driving hub upon energization of the electromagnet. After de-energization of the electromagnet, the precompressed spring biases the armature away from the driving hub disengaging the armature teeth from the teeth of the driving hub. The electromagnet is provided with a shaped coil and a conventional ball bearing rotatably supports the driving hub to form an economical compact clutch.

Abstract: Engine starter gearing of the positive shift dentil type clutch with a resilient member to absorb the torsional loads on the starter gearing upon its engagement, the starter gearing having a sleeve member with a straight spline on its inside surface and a helical spline on its outside surface whereby torque is imposed on a driving clutch member, the driving clutch member having an inside surface with a notch therein, a lock ring being positioned in the notch and engaging the sleeve member to fixedly position the sleeve member with respect to the driven clutch member.

Abstract: An excessive pressure differential indicating device for use with a filter in a liquid circulating system. The device has a reciprocable piston that reciprocates between a high pressure location, when the pressure differential is not excessive, and a low pressure location, when the pressure differential is excessive. The device has an indicator button with a magnetically conductive element, and the button is retained in a non-indicating position when the reciprocable piston is at the high pressure location by magnetic attraction between a permanent magnet carried by the reciprocable piston and the magnetically conductive element, a spring being provided to bias the indicator button to an indicating position when the reciprocable piston moves with the permanent magnet away from the indicator button to the low pressure location.

Abstract: A positive shut-off electromagnetic fluid pump of the type having a piston electromagnetically reciprocated in a cylindrical guide by a solenoid coil and a pair of valves for providing a unidirectional fluid flow from an inlet port to an outlet port in response to the reciprocation of the piston. An elastomer bumper attached to the piston occludes the outlet port when the piston is biased to its extreme position adjacent to the outlet port when the solenoid coil is de-energized.

Abstract: A starter relay disposed in the housing of an electric starter of an internal combustion engine. The starter relay has a pair of stationary contact members electrically connected by a movable bar contact. The movable bar contact is mechanically linked to an annular relay armature which is axially displaceable by an annular electromagnetic coil. A coil spring produces a force biasing the relay armature away from the electromagnetic coil and the movable bar contact away from the contact members. In the preferred embodiment the operation of the power relay is transparent to the operation of the starter drive mechanism and the annular electromagnetic coil is the electromagnetic coil of the existing started drive mechanism.

Abstract: Centrifugally disengageable engine starter gearing selectively starting an engine having a starting gear. The engine starter gearing includes a power shaft, a sleeve slidably secured to the power shaft, a pinion gear slidably mounted to the power shaft and movable into engagement with the starting gear, a driven clutch member secured to the pinion gear and having a circular recess with an inclined or conical surface therein, a driving clutch member mounted to the sleeve, mutually engageable clutch teeth on the driving and driven clutch members, a barrel housing having an open end and being at least partly fitted over the driving and driven clutch members, an abutment confining the driving and driven clutch members within the housing, a resilient member biasing the driving and driven clutch members into mutual engagement, a radially inwardly extending shoulder on the driving clutch member adjacent the circular recess. A plurality of centrifugal flyweight members are annularly arranged in the circular recess.

Abstract: Centrifugally disengageable engine starter gearing selectively starting an engine having a starting gear.

Abstract: A starter drive for an internal combustion engine in which the starter drive is mounted within the starter housing, and an ignition key activated solenoid for energizing the motor of the starter drive is contained in a solenoid housing that is attached to the starter housing and is integral therewith. The solenoid has a solenoid coil and an annular armature, and upon the energization of the solenoid coil by the connection of such solenoid coil to the battery through the ignition key, the annular armature, which is normally spring biased away from the solenoid coil, is magnetically attracted thereto. This movement of the annular armature establishes an electrical contact between a first terminal, which is connected to the battery, and a second contact which is connected to the starter motor.

Abstract: A wet motor gerotor fuel pump for pumping fuel from a fuel source to an internal combustion engine. The fuel pump includes a pump case having an inlet chamber, a motor chamber, and a pump chamber therebetween. An inlet housing provides appropriate fuel inlet to a gerotor pump in the pump chamber. An outlet housing receives the pressurized fuel and delivers the fuel to the internal combustion engine. An electric motor mounted in the motor chamber is adapted to pass the fuel therethrough such that the fuel is pumped substantially through the gerotor pump along a flow axis through the complete pump assembly to the internal combustion engine.

Abstract: A starter drive for engagement with the engine ring gear of an internal combustion engine for starting the internal combustion engine. The starter drive has a housing with a cavity formed therein, an electromagnet fixedly connected with the housing adjacent the cavity, a motor driven shaft extending through the electromagnet into the cavity, a first case connected to the motor driven shaft by a helical spline, an armature movably interconnected with the first case and engageable with the electromagnet, a second case movably interconnected with the first case but rotatably driven thereby, at least one biasing element interposed the first and second case, and a pinion gear rotatably driven by the second case through a one-way clutch, the pinion gear being selectively engaged with the engine ring gear to start the internal combustion engine.

Abstract: A wet motor gerotor pump has an armature including first and second shaft ends. The outlet housing has a bore with a bushing mounted therein for positioning the second shaft end and for rotatably supporting the second shaft end, the bushing has an exterior periphery with a raised portion extending circumferentially thereabout and radially away from the second shaft end portion, the raised portion being in contact with the bore to permit the pivoting of the armature shaft axis thereat in response to an axial alignment of the first shaft end portion; and anti-rotation means coupling the bushing and the outlet housing to prevent circumferential rotation of the bushing relative to the housing while permitting the second shaft end to rotate within the bushing.

Abstract: A pressure differential bypass sensor switch that utilizes the change in piston of a permanent magnet that is carried by a reciprocable position to actuate the switching element of an axial travel switch by the change in magnetic forces that act on the switching element as a result of the change in position of the reciprocable piston and the permanent magnet. Opposite sides of the piston are exposed, respectively, to the high pressure and low pressure sides of a filter in a liquid circulating system, and the piston is normally positioned at the high pressure side of a passage in which it travels by a spring that acts on it from the low pressure side. As the filter becomes clogged the pressure drop across it and, therefore, across the piston will increase, and the piston is calibrated so that an excessive pressure drop will drive it to the low pressure side.

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: Centrifugally disengageable engine starter gearing selectively starting an engine having a starting gear.

Abstract: A spring engaged and magnetically disengaged disc brake for engaging two opposing flat surfaces of a rotating disc such as to decelerate the rotating disc. The brake device includes a frame mounted in a fixed position relative to the rotating disc and a pair of identical brake subassemblies interposed portions of the frame and each of the opposing flat surfaces of the rotating disc. Each of the brake subassemblies includes an electromagnet fixedly interconnected with the frame, an armature interposed the electromagnet and one of the flat surfaces of the rotating disc, a spring interposed the frame and the armature to bias the armature towards the rotating disc when the electromagnet is de-energized, and a brake lining interposed the armature and the rotating disc. The frame may be formed of two magnet bodies fixedly interconnected with each other or of a single U-shaped stamping.

Abstract: A spring operated clutch having an input subassembly and an output subassembly. The input subassembly includes a sleeve member fixedly interconnected with an input drive shaft and provided with a double conical resilient frictional member on an outer cylindrical surface thereof. A first brake member is movably disposed within a bore of a second brake member, each of the brake members having frustoconical surfaces cooperating with one of two frustoconical surfaces of the frictional member. An adjusting member is movably interconnected with one of the brake members and a spring is interposed the adjusting member in the first brake member so as to bias the brake members into engagement with the friction member. The output subassembly includes an annular armature member having a first set of teeth extending therefrom and engageable with a second set of teeth which extend from the first brake member.

Abstract: An electromagnetic friction device for torque transmission, such device including an input member, and a mechanism for transmitting torque from the input member to an output member. The torque transmitting mechanism includes a friction ring member interposed the input member and the output member, a biasing member urging the friction ring into engagement with the input member, and a selectively operable biasing member, such as an electromagnetic device, for selectively biasing the friction ring member away from engagement with the input member. The torque transmitting mechanism further includes an overrunning adjustable abutment device interposed the friction ring and the input member to limit motion of the friction ring member towards the input member and thereby limit the torque frictionally absorbed therebetween.

Abstract: A wet motor pump has an armature located in a motor chamber. A shaft bushing with an internal bore rotatably supporting a shaft end portion of an armature shaft is located in an outlet housing having a bore and a bushing support for receiving the shaft bushing. The bushing, end portion of the armature shaft, the internal bore as well as an end wall passage of the outlet housing structure defines an end chamber wherein are provided an end chamber inlet passage and an end chamber outlet passage for communicating the end wall passage and the wet motor chamber. A pressure differential structure establishes a pressure differential between the end chamber inlet passage and the end chamber outlet passage, to cause a fluid flow into the end chamber inlet passage, to cool and lubricate the shaft bushing, and therefrom out of the end chamber outlet passage forming a cooling and lubrication system.

Abstract: An electromagnetic friction device for torque transmission including an input member and an output member. A mechanism for transmitting torque from the input member to the output member is provided. The torque transmitting mechanism includes an adjustable friction ring member, an inner ring member threadably disposed in the friction ring member and a biasing mechanism. The biasing mechanism urges the adjustable friction ring member into engagement with the input member. An electromagnetic actuating mechanism is mounted adjacent to the output member to move the friction ring member into and out of engagement with the input member. An adjusting mechanism of the electromagnetic actuating mechanism is adapted to adjust the magnetic armature member with respect to the adjustable friction ring member. The adjusting mechanism includes a helical biasing member mounted on a connector which connects the armature member to the friction ring member.

Abstract: An axial air gap magnetic drive motor having a diaphragm to seal the drive motor from the pump is disclosed. The drive motor drives a positive displacement pump through a magnetic coupling on both sides of the diaphragm. The gerotor pump includes an annular backing plate member, an inlet member and a three piece pump which is rotated by the drive motor through the magnetic coupling. The three piece pump includes a male rotor gear, an annular female gear cooperatively engaging the male rotor gear and an outer annular member disposed around the annular female gear. The inside diameter of the outer annular member is eccentric a predetermined radial distance from the axial centerline. The outer annular member, the inlet member and the backing plate member are pinned to one another to prevent relative movement therebetween.