Abstract: Discrete circuit devices constructed on a component substrate thermally matched to the supporting substrate of a higher level circuit assembly. Upon securing each component to the supporting substrate of a higher level circuit assembly, a connection subject to reduced thermal stress is obtained. In the construction of an exemplary surface mount, hybrid component containing resistors and capacitors, a component substrate of a polyimide impregnated material is populated with a repeating matrix of chip capacitors and chip resistors, which are adhesively bound and soldered to selected termination pads containing high temperature solder filled through vias. The substrate is epoxy encapsulated and then diced at selected ones of the through vias into multiple components. Each thermally matched component is resoldered at the separated vias to obtain surface mount terminations. Portions of the vias may be exposed through the component sidewall to permit circuit test.

Abstract: The fuel injector has several swirl passages in a fuel swirl and needle guide member that direct swirl fuel onto the frusto-conical surface of a valve seat member that is disposed at the injector's nozzle end. The needle lift is such that with the needle unseated to open the injector to flow, the swirl fuel is throttled as it passes between the rounded tip end of the open needle and the frusto-conical surface of the seat member. The throttling tends to spread the swirl flow so that it is more uniform in the circumferential sense. If the injector is closed before equilibrium flow occurs, a toroidal shaped fuel cloud is created; if the injector is closed after equilibrium flow occurs, an ellipsoidal shaped fuel cloud is created.

Abstract: A reversible flow pump (12) comprising: a first port (16) and a second port (20); a rotor (60) comprising a plurality of pump elements (74-80) movable through a fill mode and a discharge mode, a pump chamber (140) associated with each pump element (74) which are respectively filled and discharged; a ported shaft (30) rotatable between a first position and a second position, for carrying fluid to and from the various pump chambers (140), such that when in the first position fluid received at the first port (16) is communicated to fill each pump chamber (140) during the fill mode, at least a portion of such fluid is discharged therefrom and communicated to the second port (20), and wherein in the second position fluid flow is reversed. A brake system incorporating the pump is also disclosed.

Abstract: A flexible laminated delay line assembly formed to include a plurality of patterned regions which may be folded into sandwiched relation to one another without affecting electrical continuity. The transmission line layer is laminated between successively adjacent dielectric and ground plane layers. Windows cut into the ground plane and dielectric layers facilitate folding and decoupling of a support spine, folding of the conductor sections and sizing of the assembly. In one construction, the dielectric layers comprise a flexible insulative substrate laminated between upper and lower thermoset layers. In another construction the dielectric layers comprise a polyetherimide that is melt flowed about the pathways of the transmission line.

Abstract: A multiple cylinder two-stroke fuel-injected internal combustion engine is operated at idle by interrupting the fuel injection stages in a predetermined pattern such that over a certain number of crankshaft revolutions a fewer number of injections occur than over the same number of revolutions at non-idle. The quantity of fuel injected per injection is increased relative to that required to operate the engine at idle wihtout any injection interruptions. Spark timing is also advanced.

Abstract: Multi-layered, thick/thin film, nanosecond delay lines, the inductive/capacitive characteristics of which are tailored to provide line impedances yielding unit delays of 1 to 10 nanoseconds. The delay lines are constructed on a supporting ceramic, resin/fiber or plastic substrate. In alternative embodiments, a serpentine conductive layer of tailored line widths and conductor spacings is sandwiched relative to overlying dielectric layers of 25 to 200 microns thickness and associated ground plane layers. In another embodiment, multiple conductor layers are sandwiched relative to intervening dielectric and ground plane layers. Lateral contact pads/pins, vertical vias and jumper conductors permit circuit connection and interconnection of the layers.

Abstract: A golf swing is shown which includes a shoulder encircling elastic band which is secured about the shoulders and provides a primary directive force for the swing. A pair of arm encircling bands depend downwardly from the shoulder encircling band for engaging the arms and maintaining the position of the shoulder encircling band during use.

Abstract: An electro-mechanical fuel injector comprising: a housing and valve seat including a valve setting surface and a metering orifice disposed at a lower end of the housing. An armature assembly is movable relative to the valve seating surface for opening and closing the metering orifice and includes an armature and a pin extending therefrom and adapted to engage the seating surface; a coil assembly and spring are provided to move the armature assembly in a direction to open and close the metering orifice. The injector includes a fluid chamber defined upstream of the metering orifice, in surrounding relation to a portion of the armature assembly. A damping assembly is also provided, movable with the armature assembly, for generating a viscous shear damping force by interacting with the wall of the chamber.

Abstract: A high pressure vortex fuel injector comprising a hollow housing or body including a plurality of passages at least one of which is adapted to receive fuel through an inlet. The injector also includes a passage for guiding the piston into seating relationship with the valve seat to control the flow of fuel through the metering orifice and a solenoid assembly for moving the piston relative to the valve seat. The injector further includes a swirl or vortex chamber, to angularly accelerate the fuel, formed in cooperation with the first surface of the valve seat. The injector additionally includes passages for permitting fuel to circulate about an electric coil thereof, thereby cooling same during instances when the metering orifice is closed. The injector further includes passages within the swirl chamber for assisting in the rapid formation of a conical spray pattern upon the opening of the metering orifice.

Abstract: A method and system, including a valve (32) for controlling the amount of fluid purged from a cylinder (12) of a two-cycle engine prior to the combustion of an air-fuel mixture within the cylinder especially during low demand periods of engine operation. The system including a throttle (26) disposed upstream of an inlet port (14) and controlled to be maintained in an open condition during such intervals. The valve (32), which is adapted to communicate with a scavenge port (30) includes a piston (80) that is movable relative to an aperature (76) in response to a pressure differential created in part by the operation of a cooperating electromagnetic valve (54), such that when the piston is moved to uncover the aperture a predeterminable amount of fluid within the cylinder can be purged therefrom as the cylinder piston is moved through its compression cycle.

Abstract: A high pressure vortex fuel injector comprising a hollow housing or body including a plurality of passages at least one of which is adapted to receive fuel through an inlet. The injector also includes a passage for guiding the piston into seating relationship with the valve seat to control the flow of fuel through the metering orifice and a solonoid assembly for moving the piston relative to the valve seat. The injector further includes a swirl or vortex chamber, to angularly accelerate the fuel, formed in cooperation with the first surface of the valve seat. The injector additionally includes passages for permitting fuel to circulate about an electric coil thereof, thereby cooling same during instances when the metering orifice is closed. The injector further includes passages within the swirl chamber for assisting in the rapid formation of a conical spray pattern upon the opening of the metering orifice.

Abstract: A method and system, including a valve (32) for controlling the amount of fluid purged from a cylinder (12) of a two-cycle engine prior to the combustion of an air-fuel mixture within the cylinder especially during low demand periods of engine operation. The system including a throttle (26) disposed upstream of an inlet port (14) and controlled to be maintained in an open condition during such intervals. The valve (32), which is adapted to communicate with a scavenge port (30) includes a piston (80) that is movable relative to an aperture (76) in response to a pressure differential created in part by the operation of a cooperating electromagnetic valve (54), such that when the piston is moved to uncover the aperture a predeterminable amount of fluid within the cylinder can be purged therefrom as the cylinder piston is moved through its compression cycle.

Abstract: A hydraulic fluid system including a master cylinder (30) moved by a clutch pedal (34) for pressurizing a remotely located slave cylinder (50). The slave cylinder and master cylinder each including a rolling diaphragm (104, 176). The slave cylinder further including a cup-shaped piston (134) for isolating its rolling diaphragm from the rotation of a throw-out bearing (66) which is moved by the diaphragm.

Abstract: A device (10;50) comprisingan armature (12;80) movable in a first and a second direction;an obstruction for (20;22;60;74) for providing a motion stop in at least the first direction;an electromagnetic and return spring (18;28;60;140) for moving said armature in the first and second directions; anda damper attached to and movable with said armature for dissipating energy from the collision of the armature with the motion stop.

Abstract: A fuel injector, system and method comprising means for ejecting fuel directly into a cylinder (14) an engine through a non-conductive, heat storing element. The element including a nozzle (44) portion comprising a preferably ceramic body having a narrow, first passage (158) in communication with a conical second portion (164). The two portions cooperating to cause the fuel to flow turbulently therethrough. The nozzle further includes a heater (174) for elevating the temperature to the nozzle to a predetermined temperture. In this manner, as the fuel contacts the heated nozzle it is atomized. In one embodiment of the invention a solid ceramic body is employed. In another embodiment, the nozzle (178) is formed by a plurality of stacked ceramic disks which include a central opening (182) therethrough and a plurality of heating elements (184), one for each disk. The openings (182) are sized to approximate the continuous conical portion of the solid body nozzle.

Abstract: A glow plug for a compression ignited or Diesel engine having a base member, an axial electrode and a heater member. The heater member comprising a conductive surface film heater element disposed on the surface of a dielectric substrate. The surface film heater element having one end in electrical contact with the base member and the other end in electrical contact with the axial electrode.

Abstract: A glow plug for a compression ignited or Diesel engine having a base member, an axial electrode and a heater member. The heater member comprising a conductive surface film heater element disposed on the surface of a dielectric substrate. The surface film heater element having one end of electrical contact with the base member and the other end in electrical contact with the axial electrode.

Abstract: A glow plug having a hollow cylindrical metal shell, an axial electrical terminal, and a heater member protruding externally from the shell. The heater member has a surface film heater element disposed on at least one surface of an electrically nonconductive cylindrical substrate. Electrical connections between the heater element, the shell and the axial electrode are made by conductive surface films. A first conductive surface film disposed on the external surface of the cylindrical substrate makes electrical contact with the shell. A second conductive surface film disposed on the internal surface of the cylindrical substrate makes electrical contact with the axial electrical terminal. The heating element is preferably a transition metal surface film which catalytically reacts with the air/fuel mixture to enhance combustion at lower temperatures. The thermal response time of the surface film heater element from ambient to an operating temperature exceeding 800.degree. C. is less than 5 seconds.

Abstract: A glow plug for a compression ignited or Diesel engine having a base member, an axial electrode and a heater member. The heater member comprising a conductive surface film heater element disposed on the surface of a dielectric substrate. The surface film heater element having one end in electrical contact with the base member and the other end in electrical contact with the axial electrode.

Abstract: A pressure sensor including a pressure capsule such as a dual diaphragm quartz capacitance pressure capsule and structure for supporting and sealing same within the pressure environment to be measured. The pressure capsule having two parallel quartz plates spaced by a dielectric ring forming a vacuum chamber therein. The structure providing a force balanced support for compressively loading the pressure capsule through the dielectric ring. The structure further having transfer port therein to communicate the pressure environment to both plates.The method of making the quartz capacitive pressure capsule includes the steps of surface preparation, preglazing of the component parts and vacuum cooling by utilizing a controlled pressure-temperature profile.