Abstract: A method and apparatus for making an axially adjustable connection between a clutch shaft and an armature assembly to enable axial adjusting movement of the armature plate relative the inner body magnetic pole face to precisely set the air gap spacing through which an electromagnetic coil attracts the armature plate into frictional driving engagement with the inner body pole face. The hub of the armature assembly is placed upon the clutch shaft and a feeler gage is positioned between the pole face and the armature plate to establish the desired air gap spacing. An adjusting nut is threadedly advanced along a thread of the clutch shaft for progressive axial advance in the direction toward the inner body and engages the hub to maintain the armature assembly against air gap increasing movement away from the pole face.

Abstract: An engine starter drive adapted to engage an engine ring gear is disclosed. The drive has a clutch connection to connect the driving sleeve member to the outer sleeve member. The outer sleeve member further has an external helical spline with a notch. A control nut is threadably mounted on the helical splines of the outer sleeve member and has a spring loaded detent which engages the notch. The control nut is connected to the pinion gear by means of a barrel member. Rotating the power shaft causes the control nut to move along the helical splines to traverse the pinion gear into mesh with the engine ring gear and crank the engine. Further rotation of the power shaft causes the control nut to move axially to compress an annular resilient member which is interposed the barrel member and the control nut. Further compression of the resilient member causes torque to be transmitted from the power shaft to the pinion gear to rotate the ring gear.

Abstract: A fuel contamination monitor for separating particulate and liquid contaminants from a liquid fuel is disclosed. The fuel contamination monitor has an inner and outer fluid pervious wall forming a cavity therebetween. A tubular filtering element consisting of a plurality of fluid filtering media layers is mounted in the cavity. The plurality of fluid filtering media layers includes an outer layer of particulate matter separating filter media and a layer of superabsorbing media adjacent to the outer layer. The superabsorbing media is backed by a layer of paper media and an inner layer of screen material. The interior of the inner fluid pervious wall communicates with a liquid fuel outlet port. A shut-off valve is provided which interrupts the flow of liquid fuel through the fuel contamination monitor in the event that the media becomes contaminated before effective contaminant separation.

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: A blocking oscillator for a reciprocating electromagnetic actuator having a solenoid coil, a detection coil for generating a control signal in response to a charge in the magnetic field generated by the solenoid coil, a silicon Darlington amplifier responsive to the control signal to control the current through said solenoid coil, and a diode connected in series with the collector of the Darlington amplifier rendering the Darlington amplifier immune to reverse voltage and transient signals.

Abstract: A compactly sized spring-applied electromagnetically released radial face friction brake, with a ball-pocket torque booster producing increased torque capacity is disclosed. The friction brake is released by energization of an electromagnetic coil attracting an axially movable armature, which nullifies the spring operator force to release the brake. The friction brake includes a driving hub having a plurality of bosses which engage a plurality of slots in a rotatable member to be braked. Thus, the driving force from the hub is distributed to the rotatable member so that both brittle and nonbrittle friction materials can be used to form the rotatable member. In addition, a collar is provided to limit the axial movement between the armature and the stationary ferromagnetic housing which contains the electromagnetic coil therein. Thus, as the friction surface on the rotatable member wears away, the magnetic air gap cannot become so great as to prevent brake disengagement.

Abstract: A differential pressure indicating device which is temperature compensated and includes a piston responsive to a pressure differential between inlet and outlet pressures. The piston is retained in a normal or first position by the force of a spring holding mechanism. The spring holding mechanism releases the piston at a predetermined excessive differential pressure condition to a second position. As this occurs, the piston actuates an indicating member to an indicating condition. A temperature sensitive bimetallic strip is provided to permit the piston to move to the second condition without activating the indicator member when the temperature of the fluid is below a predetermined temperature.

Abstract: A filter testing device is disclosed wherein the ends of a filter element is clamped between resilient seals in a filter holder member. A dioctyl phthalate smoke generator generates smoke which is passed through the filter element. An annular sampler which is mounted between the top member and base member of the filter holder member is moved vertically along the axial length of the filter. The annular sampler has an annular cavity therein with a plurality of radial holes extending from the inner diameter to the annular cavity. A vacuum pump draws the sample from the annular cavity in the annular sampler into a forward light scattering particulate detector device wherein the quantity of smoke is measured on a meter.

Abstract: An engine starter drive adapted to engage an engine ring gear having a tooth driving clutch member which cooperates with a tooth driven clutch member. The driven clutch member further comprises a helical screw shaft with two circular grooves. A control nut threadably mounted on the screw shaft has a spring loaded detent which engages the circular grooves. The control nut is connected to the pinion gear by means of a retaining cup. Rotating the screw shaft causes the control nut to move along the screw shaft to traverse the pinion into mesh with the engine ring gears and crank the engine. When the engine fires, the acceleration of the pinion causes the control nut to move back on the screw shaft until the detent engages the first circular groove. After the engine starts and the pinion rotates to a predetermined speed, the detent withdraws from the first groove in the screw shaft and the control nut withdraws the pinion gear from engaging the engine ring gear.

Abstract: A starter drive for internal combustion engines is disclosed. 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 threaded screw 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 drive pinion gear. An engaging member holds the ring armature member to the starter housing when the drive pinion is advanced axially along the motor driven shaft by the rotation of the motor when the motor is activated. Thus, the drive pinion engages the engine ring gear such that the drive pinion is held in mesh with the engine ring gear and the total motor torque is transmitted to the engine ring gear until the motor is deactivated.

Abstract: Economical durable molded articles are prepared by mixing a hardenable resin system, gypsum filler and glass fibers, molding the desired article from the mixture, and hardening the molded article by heat or by the use of a hardening agent. The resin system comprises at least one hardenable resin, for example urea formaldehyde resin, and can include a second hardenable resin, for example polyvinyl acetate resin. The gypsum filler may be an economical by-product of phosphate refining. The glass fibers may be an economical by-product from the manufacture of bulk filter media. The constituents of the resin system and their proportions are chosen to impart desired surface finishes to the molded article. Coloring agents and other additives may also be added to affect the surface finish and appearance.

Abstract: An electromagnetic fluid pump having a magnetic circuit responsive to a predetermined position of a reciprocating magnetically permeable piston is disclosed. The reciprocating piston closes the magnetic circuit at the end of its pumping stroke increasing the value of the signal produced by a hall effect switch. The increased value of the generated signal energizes a solenoid coil returning the piston to a cocked position against the force of a resilient member which urges the piston forward on its pumping stroke.

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 improved air filter panel of the type having a fibrous filter batt and a circumferential support frame surrounding the batt, the frame having an axially extending frame element, the frame element being folded transversely to form frame sidewalls, the sides of the batt being connected to the sidewalls of the frame, the ends of the folded frame element being fastened together to secure the batt in place within the surrounding sidewalls, the improvement comprising an improved frame end fastening means, the means comprising a tab connected at a fixed end thereof to the sidewall of the support frame adjacent one end of the frame element, the tab having a neck portion at the fixed end and a head portion adjacent a free end thereof, the head portion being connected along a portion of a following edge thereof to the neck portion, the remaining unconnected portion of the following edge providing a flange portion, and a slot in the sidewall adjacent the end of the frame element opposing the tabbed end, the slot bein

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: The invention is a device which provides for separation of contaminants from a relatively high velocity stream of gas. The invention provides a first stage wherein the gas stream is decelerated and the contaminant particles are caused to separate from the air stream by interacting with a first surface. The interaction results in the particles to acquire a radial velocity vector and by virtue of the momentum of the contaminants particles. The contaminant particles are forced to the outer layer of the gas stream. The second stage of separation provides for further magnification of the radial velocity vector and also induces a slight tangential velocity component to the contaminant particle. By impacting the contaminants against a vane mounted within the gas stream, the contaminant particles, as a result of this impact, acquire a slight swirl or circular motion which causes the contaminant particles to be more localized.

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: A voltage generator which provides the biasing voltage to a telemetry transmitter positioned inside the tire of a moving vehicle is disclosed. The entire transmitting system, including the antenna, is self-contained within the pneumatic tire; and, accordingly, there is no need for connecting wires of any nature to be extended outside the tire containing the invention. The invention utilizes one of several available types of voltage generators to generate a voltage in response to the rotation of the tire as the vehicle moves within a coil. As is known, as a tire rotates along a road, the tire deflects and flattens along the area which contacts the road. The transducer used in the invention generates a voltage in response to this tire deflection. The voltage thus generated are processed and utilized to provide the biasing voltage for a transmitter.

Abstract: An electromagnetically operated friction clutch is disclosed of the type including an axially movable armature member which is drawn into frictional driving engagement with a friction surface on an inner body to establish drive through the clutch, in which a torque overload deenergization of the electromagnetic coil is provided. The clutch is provided with a torque boosting arrangement in which the drive from the axially movable armature is transmitted through a series of balls disposed in corresponding pockets formed in a radial face of the armature and an opposing radial face of a clutch element drivingly connected to one of the primary clutch members. The action of the balls in the pockets creates a torque boosting effect increasing the engagement pressure exerted on the frictional engagement surfaces. The torque overload release arrangement includes mounting of the clutch element axially and rotationally so as to be restrained by means of a spring element.

Abstract: An electromagnetic clutch device for torque transmission from an input means to an output means which incorporates an air gap adjustment feature between the pole faces and the armature during assembly of the clutch. The air gap adjuster permits the armature to be responsive to magnetic flux formed by a predetermined electromagnetic coil voltage without having to tear down the assembly if the predetermined coil voltage is exceeded at initial try-out. Means are also incorporated to compensate for wear of the torque transmitting material.