Abstract: An offset compensated electronic current sensor and controller for automatically controlling the extension and retraction of a power antenna with the energization and de-energization of an automobile electronic search tune radio receiver.

Abstract: A throttle body assembly wherein a pair of throttle blades are counter-rotatably mounted in the induction passage and define at their juxtaposition venturi sections whose size is variable in accordance with the degree of rotation of the throttle blades. The blades are peripherally sealed with respect to the walls of the induction passage by means of wiper type seals affixed to each blade as well as by caged roller type seals.

Abstract: An ignition system for an internal combustion engine comprises a distributor containing a pair of magnetic pick-up devices each of which generates signals at a frequency representative of engine speed. One pick-up is used normally during starting of the engine to fire the engine spark plugs, and the other pick-up during running. An automatic transfer circuit is provided to transfer control from the first, or start, pick-up to the second, or run, pick-up when the engine begins to run under its own power and accelerate from cranking speed. Should a condition occur indicative of a lack of signals from the run pick-up above a predetermined minimum frequency, the transfer circuit transfers control of ignition firing back to the start pick-up.

Abstract: Time delay valve means are provided in a conduit through which an actuating vacuum signal is supplied to a valve for controlling the recirculation of exhaust gases in an internal combustion engine. The time delay valve means include a pressure responsive vacuum relay valve for opening and closing the conduit in response to an increase in engine intake manifold vacuum to a predetermined level and an orifice for increasing the time required after engine starting for the predetermined level of intake manifold vacuum to be applied to the vacuum relay valve.

Abstract: In a preferred embodiment a fire control combat simulator contains a real time record of stabilization error experienced by the line-of-sight of the fire control combat system being simulated such as a stablized gun on the hull of a tank. A number of methods of making a real time record of stabilization error are disclosed.

Abstract: A viscous fluid coupling for a fan drive in an automotive vehicle, including a stamped sheet metal input member inside a cast metal output member. The output member has a fluid reservoir formed of a sheet metal stamping attached to a ledge. A moveable reed valve permits fluid to flow from the reservoir to a working space between the input and output members.

Abstract: A semi-automatic transmission incorporating self-energizing cone clutches which make use of radially distributed overlapping helical surfaces for establishing a drive connection in the clutch and for aiding in its energization.

Abstract: A fuel spray bar is disposed in the induction passage of an internal combustion engine for spraying fuel into the induction air stream. The spray bar contains a pair of separate fuel distribution rails designated as the main (or light load) fuel distribution rail and the auxiliary (or power) fuel distribution rail. A plurality of spaced orifices communicate each rail with the induction passage. A pressure regulator assembly is disposed on the fuel spray bar and contains a main pressure relief valve assembly, the outlet of which is in communication with the main fuel distribution rail of the spray bar and an auxiliary pressure relief valve assembly, the outlet of which is in communication with the auxiliary rail. A motor driven control pump delivers fuel to the inlet of the pressure regulator assembly. At idle and light engine loading, only the main valve assembly is open so that fuel is sprayed into the induction air passage solely via the main fuel distribution rail and its orifices.

Abstract: A digital readout test probe comprises: a dual in-line pin, clip-on-type connector for connection to a dual in-line pin integrated circuit; a housing containing a single digit decimal readout display; and a converter circuit whose output drives the readout and whose input is coupled with the clip-on connector by means of color coded lead wires. The display and converter circuit are energized from a separate power supply. When the connector is operatively connected with an integrated circuit, signals from selected terminal pins of the integrated circuit are supplied through the lead wires to the converter circuit. The selected terminal pins provide a binary coded decimal signal and the display shows the decimal value of the binary coded decimal signal so that the user of the probe does not have to decode the binary coded decimal signal into decimal form. The clip-type connector comprises a plurality of conductors each of which conducts a signal from a corresponding terminal pin of the integrated circuit.

Abstract: A single pick-up coupled to sense engine crankshaft position can be utilized for both starting and running of the engine in an electronic spark timing advance control system. During starting, pulses from the pick-up are coupled via a zero crossing detector to the output ignition stage to cause spark plug firing at an essentially constant firing angle at or just slightly in advance of piston top dead center position. During running, the pulses from the pick-up reset, via a reset circuit, an integrator circuit so that a sawtooth waveform representative of engine crankshaft rotational position is developed. A desired timing signal derived from one or more parameters useful in controlling the time of ignition firing is compared against the sawtooth reference waveform and when a predetermined relationship between the two is attained, the ignition is fired. Should this predetermined relationship not be attained during a cycle of the sawtooth, the reset signal from the reset circuit forces ignition firing.

Abstract: A housing containing a pair of electronic circuit boards removably mounts on the side of an engine air filter housing. The circuit board housing has a generally concave inner face matching the convex contour of the air filter housing side wall and is disposed over air circulation openings in the air filter housing side wall. In a first embodiment, the circuit board housing is of one-piece construction and the electronic circuit boards are disposed interiorly of the outer wall of the circuit board housing and in generally parallel relationship therewith. In a second embodiment, the circuit board housing is of two-piece construction having upper and lower halves. In this embodiment, the circuit boards are horizontally disposed, one each in each of the two housing halves. Connectors for effecting connection of the circuit boards with the other components of the system which are located exteriorly of the air cleaner housing extend through holes in the circuit board housing.

Abstract: An electronic engine control system comprises a central microprocessor integrated circuit, a program memory integrated circuit, and a programmable read only memory integrated circuit. The central microprocessor integrated circuit carries out calculations used in controlling an event associated with the engine according to a basic program contained in the program memory integrated circuit. The programmable read only memory integrated circuit is programmed to tailor the basic program contained in the program memory integrated circuit for the particular engine with which the electronic control system is utilized.

Abstract: An electronic ignition controller operable from a Hall Effect pickup Device in a ballast-resistorless, inductive-type ignition system for an automotive vehicle internal combustion engine and featuring programmed dwell and automatic shut-down timer circuits, which control current dissipation in the ignition coil. The programmed dwell timer circuit enables energization of the ignition coil for a controlled or substantially constant period of time over substantially the entire range of engine operating speeds up to a predetermined high engine speed above which the ignition system reverts to a constant duty cycle characteristic determined by the character of the triggering input or pickup device.

Abstract: The throttle for the air inlet passage of an automobile internal combustion engine comprises a variable restriction diffuser within the passage and designed for sonic velocity gas flow through its region of maximum restriction throughout substantially the entire operating range of the engine. The diffuser comprises an orifice member and a closure member movable axially in opposite direction within the passage to vary the aforesaid maximum restriction and operatively coupled with the throttle control linkage for such movement, whereby the force required to move either diffuser member against the force of the fuel and air inlet flow within the passage is counterbalanced by an oppositely directed force exerted by said flow on the other diffuser member.

Abstract: Master cylinder reservoir comprising a housing having two adjacent reservoir sections separated by a transversely extending double wall partition having windows offset laterally from one another with a space between the walls.

Abstract: The ratio of preheated inlet air to ambient inlet air supplied to an internal combustion engine is controlled by a proportioning valve operated by a vacuum motor. Operating pressure for the motor is controlled by valve means responsive to the inlet air temperature for normally preventing changes in the motor operating pressure, but which selectively connects the motor via a predetermined restriction with essentially atmospheric pressure, or with sub-atmospheric pressure in the engine inlet air induction passage downstream of the throttle valve, when said inlet temperature is correspondingly above or below a predetermined operating range, whereby the operating pressure for the vacuum motor and actuation of the proportioning valve are functions of an algebraic integration of the time intervals that the inlet air temperature varies from the predetermined operating range.

Abstract: New nickel-base superalloys with good overall properties, the alloys being particularly adapted for high temperature applications at about 1800.degree. F. to 2000.degree. F., such as for turbine engine or other high temperature, high stress applications, and possessing a complex, multi-component gamma prime Ni.sub.3 Al.sub.1 matrix (not necessarily in the exact 3:1 proportion) in which both the nickel and aluminum atoms are partially replaced by, and/or containing, one or more of the following elements: Cr, Ti, Co, Mo and Ta. The nickel and aluminum may also be partially replaced by one or more of the following elements: W, C, Cb, Be, B, Zr and rare earths, such as for example, mischmetal. The gamma prime Ni.sub.3 Al.sub.1 matrix phase precipitates a delta Ni.sub.1 Al.sub.1 phase (not necessarily in the exact 1:1 proportion) at elevated temperatures (termed herein "inverse precipitation") thus providing critical high temperature strengthening of the matrix.

Abstract: An interlock for a manual transmission including a lever pivoted to a housing and movable between one position in which a slideable clutching member is held against axial movement when a reverse idler is engaged and a second position in which the reverse idler is held against axial movement when the slideable clutching member is in a first speed or second speed position.

Abstract: A fluid flow sensor fabricated by integrated circuit techniques is positioned within fluid flow passages for measuring the mass flow of fluid therethrough. The sensor comprises three solid state circuit devices wherein two are fabricated on a chip separate from the third device.The first device is responsive to forced convective heat transfer by the fluid flowing thereover for generating a first electrical signal. The third device is responsive to temperature of the fluid thereover for generating a second signal and the second device is responsive to both said first and second electrical signals for maintaining said first device at a predetermined temperature above said third device.A fuel metering system for internal combustion engines is described utilizing a fluid flow sensor for measuring the mass flow of both fuel and air into the throttle body. Circuit means responsive to said sensors operate to maintain a predetermined fuel-air ratio in said internal combustion means.

Abstract: A test assembly for determining the acceptability of an engine driven lubrication oil pump without disassembling the pump from the engine. A conduit housing is provided for assembly on the engine in place of its oil filter. The housing fluidly communicates with a test valve assembly which carries the engine oil filter and is operative to direct or prevent fluid flow through the filter to the engine and includes means for measuring the pressure developed by the engine pump during flow prevented mode of operation and means for preventing operation in the flow prevented mode beyond a predetermined duration.