Abstract: An electron gun for a color picture tube has beam generators for generating three electron beams and directing them toward the fluorescent screen along three paths which are parallel with each other on the same plane, and at least one pair of electrode surfaces each having three apertures centered with the three paths for forming independent main lenses so as to focus the electron beams on the fluorescent screen, the electrode surfaces being spaced apart from each other. Provided for the electrode surface are cylindrical shield members centered with the apertures and extending from the apertures in opposition to the opposing electrode surface. Outer ones of the cylindrical shield members have each an end surface inclined with respect to the center axis of the aperture so as to form inclined electric fields effective to converge the outer beams to one point to which the central beam converges.

Abstract: An adjustable speed automatic transmission includes a variable speed pulley mechanism, a fixed speed ratio drive mechanism and a plurality of clutches in combination. The clutches are selectively engaged to control ouput speed in a low speed range by coupling the variable speed pulley mechanism and the fixed speed ratio drive mehcanism between an input and an output shaft. Alternatively, in a high speed range the clutches are selectively engaged to drive the output shaft directly from the input shaft.

Abstract: A power transmission belt structure including a flexible neutral belt portion, a plurality of blocks secured to the flexible belt portion seriatim longitudinally thereof, and heat conducting structure disposed between the flexible belt and blocks for conducting away from the flexible belt heat generated as a result of power transmission operation of the belt structure. A number of different embodiments utilizing the heat conducting structure are disclosed. In certain of the embodiments, the heat conducting structure extends partially about the blocks and, in certain of the embodiments, the heat conducting structure extends fully thereabout. In certain embodiments, the reduced midportion of the block is provided with the heat conducting structure recessed therein. In one form, a protective outer coating is provided on the heat conducting structure.

Abstract: An apparatus and method for effectively minimizing sound emanation from a power transmission belt drive and providing extended useful life of the power transmission belt by reducing the operating temperature thereof. In the illustrated embodiment, the drive system is enclosed in a housing having one or more inlets and one or more outlets. Air moving structure is provided in association with the pulleys for causing air flow through the interior of the housing from the inlets to the outlets as an incident of operation of the drive system. In the illustrated embodiment, the pulleys are formed of heat conducting material so as to transfer heat from the belt to the air being flowed through the interior of the housing, thereby reducing the operating temperature of the belt.

Abstract: An automatic white balance adjusting circuit comprises a color temperature detecting circuit for producing a detection signal having a voltage in correspondence with a color temperature of an incoming light to an image pickup device, a reference voltage signal generating circuit for generating an A.C. reference voltage signal, a comparing circuit for obtaining a discrimination signal by comparing the detection signal with the reference voltage signal, a plurality of voltage sources for applying different voltages in correspondence with different color temperatures, a selecting circuit for selecting and obtaining voltages from the voltage sources depending on the output discrimination signal of the comparing circuit, and an integrating circuit for integrating output voltage signals of the selecting circuit.

Abstract: A bicycle ergometer includes an eddy current brake having a rotor assembly including an iron material having a carbon content of 0.12% or less and a silicon content of 0.35% or less, a stator provided in the rotor assembly, a plurality of exciting coils provided on the stator, and a power source for energizing the exciting coils. The ergometer includes an input panel for inputting physical attributes of the user, e.g., age and sex, a pulse sensor for measuring the heart rate of the user at rest and during exercise on the ergometer, an arithmetic control circuit for calculating a training program and heart rate range and for controlling the eddy current brake to present a load to the user which will maintain the user's heart rate in a predetermined range. The method of using the ergometer enables a user to select a physical strength program and a weight reduction program with the selected program reflecting the age, sex, and the present physical condition of the user.

Abstract: A power transmission belt for transmitting high loads having an elastomeric looped flat belt portion having a longitudinally extending tensile cord and defining an outer surface and an inner surface, and a plurality of longitudinally extending spaced blocks mounted to the outer and inner surfaces respectively of the flat belt portion. Each block is formed of a core and a fabric wrapped around the core. In one embodiment, the block is secured to the flat belt portion by bolts extending therethrough. The fabric of the blocks may be treated with different materials, such as rubber, synthetic resins, and the like. The core may be formed of an elastomeric material. The flat belt portion may be provided with one or more layers of fabric.

Abstract: A method of controlling the speed of the output of a V-belt drive having an output driven pulley driven by a V-belt from an input driver pulley wherein the rotational speed of the driver pulley is determined, the ratio of the effective belt drive diameters of the driver and driven pulleys are determined and the effective belt to drive diameter of at least one of the pulleys is adjusted to provide a preselected speed of the drive output.

Abstract: A spring-locked variable speed pulley, such as may be used as a drive device for automotive, motorcycle or industrial applications, wherein the engagement of a spring with the side of a stopper and movable pulley piece are improved in such a manner that the pulley can be used in a wide variety of applications. The movable pulley piece is mounted on a shaft adjacent to a stationary pulley piece with the movable pulley being movable axially as well as being rotatable. A stopper and a spring are interposed between the movable and fixed pulley pieces. Pins protrude from the side of the confronting surfaces of the movable pulley piece and the stopper, which pins engage in holes formed in the ends of the spring, the holes being disposed diametrically opposite one another with respect to the center longitudinal axis of the spring.

Abstract: An electron gun for a color picture tube is disclosed in which three parallel electron beams emitted toward a fluorescent screen and arranged so as to define one and the same plane are focused on the fluorescent screen by a main lens, electrodes constituting the main lens are spaced apart from each other, the electrodes include at least two envelopes and electrode plates disposed at the confronting end faces of the envelopes, each of the electrode plates has a single aperture for transmitting a central one of the electron beams, the path of each outer electron beam is surrounded partly by one of end portions of each electrode plate, and at least one of the electrode plates is placed in a corresponding one of the envelopes such that the electrode plate is recessed from the end face of the corresponding envelope confronting the other envelope.

Abstract: An electron gun used in a color picture tube having means for emitting three electron beams toward the fluorescent screen, and main lenses for focusing the electron beams on the fluorescent screen. The main lenses are constituted by two envelopes spaced out from each other and adapted to surround the electron beams, and two electrode plates located on the confronting end surfaces of the envelopes and provided with three apertures aligning on a line for conducting the three electron beams. At least one of the two electrode plates is recessed relative to another electrode plate and disposed inside the envelope, and the recessed electrode plate is structured such that non-rotational symmetry of the lens caused by the recess of the electrode is corrected.

Abstract: A belt-type torque control system wherein a power transmission belt is entrained about a pair of variable speed pulleys. One of the pulleys includes coaxially mounted pulley halves, one of which is fixed to a drive shaft and the other of which is axially and rotatively movably mounted thereto. A coil spring extends between the movably mounted coil half and a spring retainer fixed to the shaft urging the movable pulley half toward the fixed pulley half. The coil spring causes a variation in the spacing between the pulley halves as a function of the belt force applied thereto in operation of the drive.

Abstract: A variable pulley structure (10) arranged to be mounted to a shaft (17) with at least one of the sideplate elements (14) thereof movably mounted to the shaft for both axial and rotational movement. Disposition of the movable sideplate element (14) is controlled by a spring (26) extending between a spring retainer (22) fixed to the shaft (17) and a portion (24) of the sideplate element. The spring (26) is retained at its opposite ends to the retainer and sideplate element, respectively, suitably to be unwound as a result of increased torque developed in the movable sideplate element (14) by the drive system. The ends (29,30) of the spring (26) are releasably connected to the retainer and movable sideplate element as by reception in arcuate grooves (27,28) therein, by abutment with suitable stop shoulders (131,132) thereon, etc. Cross section of the spring, in one form, is round and in another form for use in transmitting high load torques, is rectangular.

Abstract: A V-belt 10, 110, 210, 310, 410, 510, 610, 710, and 810 having a rubber body 111, 211, 311, 411, 511, 611, 711 and 811 defining an upper surface 12, 112, 212, 312, 412, 512, 612, 712 and 812 and a lower surface 13, 113, 213, 313, 413, 513, 613, 713 and 813 and a plurality of substantially parallel low elongation high-strength tensile cords 14, 114, 214, 314, 414, 514, 614, 714 and 814 extending lengthwise longitudinally of the V-belt intermediate the upper and lower faces. A plurality of filament reinforcing elements 16, 17, 116, 117, 216, 316, 416, 516, 616, 716, 816, 217, 317, 417, 517, 617, 717 and 817, 224, 428 are provided for resisting transverse expansion of the V-belt during high power drive operation. The transverse filament reinforcing elements selectively define monofilament elements and bundled filament elements as desired. Different arrangements of the reinforcing elements in the belt body are disclosed.

Abstract: A method and apparatus for forming belt sleeves having grooves provided in either or both of the inner and outer surfaces thereof. The manufacture includes the provision of a preform laminate on an inner mold and the forcible urging of a constrictable outer mold radially against the laminate at elevated temperatures so as to effect curing of the rubber of the laminate in accurate conformity to the grooved configuration of the inner and outer molds. The entire assembly is carried on a central support post. Pressure plates are provided for urging the constrictable outer mold radially inwardly as the result of threaded advance of nuts on the central post. The grooves in the mold surfaces may selectively be arranged to extend parallel or circumferentially of the central axis of the post as desired to form either longitudinally or transversely extending ribs, grooves, etc., in the formed sleeve belt.

Abstract: A V-section cog belt having a rubber body provided with longitudinally spaced inner cogs defining an inner surface. The belt is provided with conventional tensile cords extending longitudinally thereof. Rigid metal reinforcement members are provided in the cogs extending transversely across the belt in outwardly spaced relationship to the inner surface thereof. The reinforcement members may have any one of a plurality of different configurations, including tubular configurations and solid cross section configurations. The outer and inner surfaces of the tubular configurations may be similar or different as desired. In one form, the reinforcement members are spring plates. The reinforcement members may be provided as single members in each of the cogs or a plurality of members in the cogs as desired.

Abstract: An adjustless V-belt and method of manufacturing the same is disclosed. The power transmitting belt automatically absorbs and adjusts its elongation to maintain constant tension.

Abstract: An adjustless V-belt and method of manufacture. The V-belt comprises: a compressive rubber layer made of a heatproof or coldproof rubber and an adhesion rubber layer laminated on said compressive rubber layer. A group of cogs protrude from said adhesion rubber layer with a predetermined pitch and depth and a longitudinally stretchable cover canvas covers the cogs, and the roots between said cogs. Rope tensile members are embedded between the adhesion rubber layer and the group of cogs with a regular pitch line and in the cylindrical state such a manner that parts of the tensile members are in contact with said cover canvas. The rope tensile members have a high thermal contraction stress of at least 3.5 g/denier which is the differential between a thermal contraction stress at 100.degree. C. and that at room temperature (about 20.degree. C.). Short fibers are embedded in the compressive rubber layer in such a manner that the short fibers are orientated laterally therein.

Abstract: An apparatus for testing a power transmission belt is disclosed, wherein a test belt is mounted between a pair ot pulleys secured to first ends, respectively, of a pair of shafts disposed in parallel and a drive belt is mounted, through idlers, between another pair of pulleys respectively secured to the other ends of the shafts. One of the shafts is supported on a movable plate adapted to be moved in conformity with the length of the test belt. Pitch diameters of these pulleys are determined to exert torque on the shafts to thereby apply tension to the belts. The idlers are disposed so as to avoid displacement of the drive belt regardless of the length of the test belt, and one of the idlers is movably disposed to further control tension of the drive belt.

Abstract: An apparatus for testing power transmission belts is disclosed, wherein a drive belt is mounted between at least one drive motor and at least one intermediate shaft, and a test belt is mounted between at least one driven motor and said intermediate shaft. A variable load is applied to the test belt by causing an r.p.m. differential between the motors and a slippage of the belts with respect to pulleys secured to the drive and driven motors and the intermediate shaft.