Abstract: A hydraulic cylinder usable as a shock-absorbing trim and tilt cylinder for adjusting the position of an outboard motor or outdrive unit of a boat, is provided with a piston including pilot-operated valve means which stepwise responds at a precisely setable pressure, to pressures resulting from impact of an outboard motor or outdrive unit upon an obstacle, the valve means then departing as a poppet-type relief valve to allow the outboard motor or outdrive unit to return to operative position following the impact. The hydraulic cylinder is provided with an integral conduit formed by milling a groove or slot from a point adjacent its mounting end to the point adjacent its rod end, and fastening a cover over the groove.

Abstract: A hybrid ring useful in the microwave and millimeter wave regions as a mixer for producing an IF output signal in response to applied LO and RF input signals. The ring is designed to exhibit a narrow bandwidth at the LO signal port and a moderately broad bandwidth at the RF signal port.

Abstract: A speed limiting indicating device for an internal combustion engine having an engine speed sensor providing a first signal indicative of engine speed, means responsive to said first signal for providing a speed limit signal indicative of said engine speed exceeding a predetermined speed limit, said speed limit signal means including a logic gate having its input connected to said first signal for providing said speed limit signal at said predetermined limit speed.

Abstract: A pinion gear assembly for a starter motor which may be assembled utilizing a simple and convenient assembly process. The pinion gear assembly includes a pinion gear, a cup, a rubber washer, and a spline follower. The closed end of the cup has an opening which passes the body and teeth of the pinion gear, but does not pass intertooth fillets at one end of the pinion gear, thus keeping the pinion gear retained in the cup. The rubber washer is retained between the pinion gear and the spline follower, and acts to absorb shock and allow some movement to align teeth of the pinion gear with teeth of a mating ring gear or flywheel. In assembly, the spline follower is held in alignment with the pinion gear, and the material of the cup is pressed radially inward over the rear surface of the spline follower, forming retaining step portions for retaining the spline follower in the proper alignment.

Abstract: An electronic ignition system having an automatic shutdown feature is disclosed. In a first embodiment of the invention, should an output terminal of an integrated circuit (10, 10a) remain in a high voltage condition for a prolonged period of time, a capacitor (C100) which is charged from a constant voltage and alternately discharged through a terminal (105) of the integrated circuit, is allowed to charge, and gradually reaches the threshold voltage of a transistor (Q200) which is connected to shunting transistor (Q1), which diverts current from transistor (Q2) in series with an ignition coil primary winding (76, 76a) and gradually deenergizes the ignition system. In a second embodiment, a capacitor (C200) is charged from a constant voltage, and alternately discharged by being shorted by an inverting transistor (Q300) connected to a terminal (205) of an integrated circuit (200, 200a), which provides a signal which is the compliment of an output terminal.

Abstract: Improvements in a dry charged lead-acid storage battery and in a method for producing such a battery are disclosed. The improvements in the battery involve negative plates having an initial polarization, when on charge, not greater than zero; preferably, the positive plates have an initial polarization, when on charge, of at least 100 millivolts, and most desirably, from 150 to 180 millivolts. The improvements in the method involve, for example, reducing the initial polarization of the negative plates by partial discharge thereof after formation or by air or chemical oxidation. The battery of the invention is protected from catastrophic positive grid corrosion upon activation and consequent premature failure in service without the necessity for conventional (high voltage) boost-charging at the time of installation into a conventional float charging system.

Abstract: This invention relates to a specific type of multi-conductor cable comprising a plurality of insulated wire conductor pairs, each of said insulated conductor pairs having alternating twist and straight portions and having alignment means for precisely aligning both the twisted portions and straight portions of said insulated conductor pairs in a predetermined, laterally spaced, relationship with respect to each other. The alignment means of the multi-conductor calbe of this invention comprises a laminated plastic sheet, initially formed from first and second plastic sheets or films, the laminated film having(a) a plurality of precisely spaced encapsulating ducts formed therein, each encapsulating duct containing either an individual, insulated, straight portion of a conductor or an insulated conductor twisted pair and(b) nip areas extending laterally between, and joining, each of said precisely spaced encapsulating ducts.

Abstract: An idle speed control system for controlling the idle speed of an internal combustion engine, to conserve fuel by allowing a lowered idle speed, whenever possible, as well as offering more than normal power when needed, is disclosed. This idle speed control system includes an actuator for moving a secondary idle stop member into operative position, having both a vacuum-operated section and a solenoid section for maintaining the actuator in operative position, regardless of the state of the vacuum-operated portion. The idle speed control system further includes a control circuit responsive to engine speed which applies an output signal to the vacuum-operated section of the actuator when engine speed falls below a predetermined minimum, maintains it for a predetermined period of time, momentarily removes it to determine if the engine is presently capable of idling above the predetermined minimum speed, and reapplies the output signal if engine speed then dips below the predetermined minimum speed.

Abstract: A structure for trapping hazardous dust in a work place which also serves as a walkway is disclosed. A removable cover member (12) includes a frame and a central support member (18), the frame and central support member (18) being covered with expanded metal mesh (22). The cover rests upon a shallow pan (10), the pan (10) having a raised central ridge (28) which is aligned with the central support member (18) in the cover (12) when the cover (12) is placed on the pan (10). The central support member (18) and the central raised ridge (28) cooporate to limit the deflection of the expanded metal mesh (22) under the weight of a user. The lower pan (10) is provided with a hook (34), for engaging other similar pans (10) for assembling a walkway or other desired configuration of dust collecting pans. The pan may be filled with a non-evaporating liquid to permanentaly retain dust falling into the pan, and also dust being scraped from the shoes of a user by the expanded metal mesh.

Abstract: A phase-lock loop ties a reference input frequency such as for the rotational speed of an engine with an engine timing signal. The engine timing signal is a sawtooth with a peak to peak amplitude and with the phase of the timing signal corresponding to the instantaneous amplitude of the timing signal between its peak to peak extremes.The phase-lock loop comparison, produces a drive or speed signal which is also indicative of the reference signal frequency. The level of the drive or speed signal, is that necessary to maintain the period of the timing signal in correspondence with the reference input signal.A third signal may be generated, proportional to the engine rotational speed signal, or to any other engine parameter which is compared to the timing signal to produce a trigger signal at the appropriate phase angle of the engine rotational cycle.

Abstract: A dynamoelectric machine (1), having brushes which contact an armature contact surface such as commutator (6) or slip rings, is provided with a plurality of independent, individually removable brush holders (10, 100). Each brush holder is provided with either a removable pin (102) to allow brushes to contact the armature contact surface after the brush holder (10, 100) has been installed, or with a clamping bolt (40), retaining brushes (8) in a predetermined position for insertion of the brush holder, and removal of the brush holder, the brush holder being tilted or cocked to avoid contact between it and the armature contact surface. Bolting the brush holder (10, 100) into place makes electrical contact between the dynamoelectric machine and the brush holder by means of an insulated, conductive threaded aperture (34) on the exterior service of the machine, a mounting bolt (24) inserted into this aperture (34) urging a conductive portion (20) of the brush holder into electrical contact.

Abstract: An ignition system for a small internal combustion engine is disclosed, including a magnetic trigger rotor (33) having two magnets (45) disposed in arcuate slots (43), with a radial slot (41) disposed between the arcuate slots (43) for causing an abrupt flux reversal in a pickup coil (35) to generate an initial ignition timing signal, and two or more holes (47), (49) adjacent the radial slot and made in the direction of the axis of rotation of the rotor, for causing flux distortions which becomes significant at higher rotational speeds, to give a step-type ignition advance.

Abstract: A method and apparatus for displaying reduced and expanded size characters in a photocomposition device encodes each of a set of normalized characters in a series of overlapping strokes each stroke being encoded by start point coordinates and a first and second dimension of said shape, encodes a set of instructions describing the display placement and size of the characters, determines the display locations coextensive with each stroke and storing the locations, and accesses the stored locations for display of the strokes and the characters.

Abstract: A method for displaying characters on a raster display including the steps of storing a digitized font of normalized encoded characters in a first store, storing the identity size, and display location of the characters in a second store, generating a succession of raster lines, 1 through N, said first raster line being 1 and said last raster line being N in a predetermined order of raster lines, arranging successive characters in said second store into segments, each segment referenced to a respective raster line 1 through N, reordering the sequence of said segments by the value of each segment's respective raster line 1 through N, sequentially identifying respective segments for successively generated raster lines, identifying the boundaries of the characters within the said segments intersecting the raster lines and displaying the said characters responsive to said identified intersections.

Abstract: A dynamoelectric machine (1), having brushes which contact an armature contact surface such as commutator (6) or slip rings, is provided with a plurality of independent, individually removable brush holders (10, 100). Each brush holder is provided with either a removable pin (102) to allow brushes to contact the armature contact surface after the brush holder (10, 100) has been installed, or with a clamping bolt (40), retaining brushes (8) in a predetermined position for insertion of the brush holder, and removal of the brush holder, the brush holder being tilted or cocked to avoid contact between it and the armature contact surface. Bolting the brush holder (10, 100) into place makes electrical contact between the dynamoelectric machine and the brush holder by means of an insulated, conductive threaded aperture (34) on the exterior service of the machine, a mounting bolt (24) inserted into this aperture (34) urging a conductive portion (20) of the brush holder into electrical contact.

Abstract: Means are disclosed for dissipating supercharge pressure in a hydraulic system including a reversible pump (18) directly connected to a hydraulic cylinder (22). Supercharge pressure results from unequal areas on either side of a piston (24) of a single-ended hydraulic cylinder (22). When the piston moves towards the blind end of the cylinder (22), more fluid is displaced from the cylinder than is admitted to the cylinder on the opposite side of the piston. Means responsive to a pressure at a first port (82) of the pump (18) opens a passage between the second port (76) of the pump (18) and a fluid reservoir (16), allowing fluid in excess of the pump's intake requirements to pass to the reservoir (16). In a first embodiment of the invention, a rocker mechanism (60) is actuated by a piston (66) responsive to pressure at the first port (82) pressing against a first end (20) of the rocker mechanism (60), the second end (74) of the rocker mechanism (60) displacing a check ball (38) of a keep-full valve.

Abstract: A method of preparing battery electrodes from tetrabasic lead sulfate paste including the steps of adding a carbonate material to the paste, curing the electrodes in a humid atmosphere and forming the electrodes.

Abstract: A dynamoelectric machine (1), having brushes which contact an armature contact surface such as commutator (6) or slip rings, is provided with a plurality of independent, individually removable brush holders (10, 100). Each brush holder is provided with either a removable pin (102) to allow brushes to contact the armature contact surface after the brush holder (10, 100) has been installed, or with a clamping bolt (40), retaining brushes (8) in a predetermined position for insertion of the brush holder, and removal of the brush holder, the brush holder being tilted or cocked to avoid contact between it and the armature contact surface. Bolting the brush holder (10, 100) into place makes electrical contact between the dynamoelectric machine and the brush holder by means of an insulated, conductive threaded aperture (34) on the exterior service of the machine, a mounting bolt (24) inserted into this aperture (34) urging a conductive portion (20) of the brush holder into electrical contact.

Abstract: An apparatus is disclosed whereby a sudden perceptible resistance is applied to the accelerator pedal of an automobile vehicle when the intake manifold vacuum pressure level decreases below a preselected pressure. A pneumatic motor is operated by a throttle valve that mixes the ambient and manifold vacuum. The motor controls the relative position of a helical spring relative to the throttle control and allows the throttle control and spring to engage abruptly when the manifold vacuum pressure is below the preselected level and withdraws the spring from contact with the throttle control when the manifold vacuum pressure exceeds that pressure level.

Abstract: This invention provides an improved magneto system which is reliable and stable irrespective of environmental conditions, wear and the like, and has no contacts, breakers or other moving parts in addition to the rotor itself. The conduction in the magneto winding means is initiated and terminated by a solid state device and preferably a solid state threshold device which is responsive to impulses of electrical energy to change its state between one of conduction and nonconduction whereby magneto operation can be controlled by relatively short duration trigger impulses. The trigger impulses may automatically produce a spark advance for increased magneto speeds.