Abstract: An apparatus and a method for generating same provides a pulley sheave inner face profile for a variable pulley of a continuously variable transmission allowing the crowned face chain-belt centerline to remain in a plane substantially perpendicular to the axis of the pulleys at all times and at all drive ratios. Given a primary pulley sheave inner face profile, a corresponding secondary pulley sheave inner face profile can be developed to achieve substantially perfect belt alignment. The pulley sheave inner face profiles may be designed to be identical or congruent. Congruent pulley sheave inner face profiles can be developed according to an algebraic solution allowing numerically controlled design and manufacturing techniques in the fabrication of the sheave inner faces.

Abstract: A blade-type chain tensioner constructed from a plastic shoe and a blade spring. The shoe is slightly arcuate and has a pocket along its concave side. At each end of the pocket is a cavity. The blade spring is substantially more arcuate than the shoe and is rectangular. The blade spring is further dimensioned to allow each end of the blade spring to be mounted in the pocket having an end in each cavity at the end of a shoe. Through this configuration the blade spring is mechanically interlocked with the shoe without the use of fasteners or cutouts. The blade spring places a load on the shoe and causing the shoe to creep at an elevated temperature and thereby provide tension to a chain.

Abstract: A roller chain is provided with links having some rollers of nylon. The nn rollers may be arranged with standard metallic rollers in patterns along the length of a single-strand or double strand roller chain. The nylon is polytetramethylene-adipamide.

Abstract: A camshaft (26) has a vane (60) secured to an end thereof for non-oscillag rotation therewith. The camshaft also carries a sprocket (32) which can rotate with the camshaft but which is oscillatable with respect to the camshaft. The vane has opposed lobes 60a, 60b) which are received in opposed recesses (32a, 32b), respectively, of the sprocket. The recesses have greater circumferential extent than the lobes to permit the vane and sprocket to oscillate with respect to one another, and thereby permit the camshaft to change in phase relative to a crankshaft whose phase relative to the sprocket is fixed by virtue of a chain drive extending therebetween. The camshaft experiences pulses during its normal operation, and these pulses are used to change its phase with respect to the crankshaft.

Abstract: A composite check valve and positively closing valve, particularly such a valve for regulating the introduction of secondary air into the exhaust stream of an internal combustion engine at selected times during the operation of the engine. The valve comprises an inlet port, an outlet port, a first valve element movable between open and closed positions for nominally regulating the flow of a fluid between the inlet and outlet ports, and a second valve element for overriding the first element. The second element can function by seating against the same seat as the first element, or by "latching" the first element in its closed position. The disclosed embodiment is a flap valve which is modified by superimposing a rigid, movable valve disk over the flap. The rigid disk is movable between a disengaged position where it may have no immediate function and an override position urging the flap against its seat or otherwise closing the aperture defined by the seat.

Abstract: Temperature compensation techniques are utilized to provide consistent system response in a continuously variable transmission system or other control system over a range of expected operating temperatures. Variations in the independent transfer functions for various control functions, such as ratio control, line pressure control and clutch control are monitored or measured. Appropriate modifications to system operating parameters are scheduled based upon the measured, simulated or predicted variations in the transfer functions as previously determined. In operation, the disclosed system senses temperature and provides the appropriate compensation and gain parameter modifications in accordance with the selected schedules.

Abstract: A camshaft (26) has a vane (60) secured to an end thereof for non-oscillag rotation therewith. The camshaft also carries a sprocket (32) which can rotate with the camshaft but which is oscillatable with the camshaft. The vane has opposed lobes (60a, 60b) which are received in opposed recesses (32a, 32b), respectively, of the sprocket. The recesses have greater circumferential extent than the lobes to permit the vane and sprocket to oscillate with respect to one another, and thereby permit the camshaft to change in phase relative to a crankshaft whose phase relative to the sprocket is fixed by virtue of a chain drive extending therebetween.

Abstract: A control arrangement for a continuously variable transmission utilizes a lationship between force ratio, speed ratio and the factor of safety to determine the force necessary on the secondary sheave to prevent belt slippage. The control system improves the efficiency of the transmission by reducing the excess clamping force between the CVT chain-belt and the secondary pulley sheave.

Abstract: A continuously variable transmission includes an improved secondary servo arrangement in order to provide the necessary clamping forces for high torque conditions. The secondary servo includes a plurality of fluid chambers in order to allow an increase in the area for application of fluid pressure. Fluid conduits between the chambers permit communication of the fluid to the chambers to regulate the clamping force of the movable sheaves of the secondary variable pulleys.

Abstract: A rocker joint is provided which is constructed from the pins and bushings f the links. The pin members have a working front surface and a convex back surface. The bushings have apertures therein which include an arcuate working surface. The pins are disposed in the apertures of the bushings such that the pin member working surface engages and rocks on the curved surface defined by the aperture of the bushing. The rocker joint has application to roller chain and silent bushing chain.

Abstract: A torque amplifying camshaft for operating a valve of each of a plurality valves of an internal combustion engine, the camshaft having an elongagte shaftlike portion and an engine valve operating cam for each of the valves, the valve operating cams being spaced apart from one another along the shaftlike portion. Each of the engine valve operating cams has an outwardly projecting portion, and the outwardly projecting portions are circumferentially offset from one another about the longitudinal central axis of the camshaft. The camshaft also carries a supplementary cam surface, either in the form of an outwardly facing surface of a separate supplementary cam or an inwardly facing surface of a portion of a drive sprocket which is keyed to the shaftlike portion.

Abstract: A groove pattern for the paper-based friction facing on a wet clutch to elize the surface temperature of the friction facings and thus increase the thermal capacity of the clutch where there is continuous slippage. The groove pattern includes one or more continuous annular grooves dividing the friction area into two or more annular bands and a plurality of cross grooves in each band which are angled with respect to a radius of the facing. The angled cross grooves increase in number in each band from the inner band to the outer band. The angled cross grooves extend at an acute angle (10-50 degrees) to such radius. Slip of the friction pair of plates cause a viscous pumping action. The cross groove angle in each band of the facing is preferably different so as to keep all the grooves filled with cooling oil. And, the cross-section of the cross grooves vary in their dimensions as between the bands. The disclosed 60.degree.

Abstract: A gripper head for the pick-up of a single piece of material from a stack of such pieces. The gripper head is provided with curved needles mounted on the ends of two concentric hollow cylinders. Each hollow cylinder comprises a spiral guide slit. The pitch direction of the guide slit of one cylinder is opposite the pitch direction of the guide slit of the other cylinder. The guide slits cooperate with the gripper head casing to produce rotation of the cylinders in directions opposite to one another during axial advancement of the cylinders within the casing. The cylinders are advanced within the casing by means of a pressure bolt connected to the cylinders. The magnitude of the advancement is determined by the position of an adjustable stop ring located within the casing. In operation, the two sets of curved needles extend from the casing edge and simultaneously rotate in opposite directions in an adjustable and retractable fashion.

Abstract: A thermal management system particularly adapted for a portable lightweight opaque projector dissipates the heat generated within the projector by the projector light source in a controlled fashion, while maintaining the exterior of the projector in a moderate temperature range. Opposed sidewalls of the enclosed interior illumination chamber of the projector are provided with alongated planar heat sink surfaces which are coated with a flat black finish which is highly absorptive of infrared as well as visible radiation. The heat sink surfaces are mounted spaced from the adjacent interior sidewall of the projector, such that an air channel or plenum is formed between the heat sinks and the adjacent sidewall. Exhaust fans draw air out from the interior of the projector and through these air channels to thereby remove heat absorbed by the heat sinks. The exterior sidewalls of the projector opposite the heat sinks are provided with a passive heat dissipation mechanism.

Abstract: A collapsible container for suspended freight, especially for conveying garments by air, the walls and roof being of rigid waterproof panels supported upon a standard floor pallet. In the preferred case, the roof slides on rollers over two opposite side walls and is provided with parallel horizontal bars rigidly attached to its inner surface for the suspension of the garments. The weight carried by the side walls is distributed over the floor pallet by supporting the side walls on a weight distributing framework. The component panels may be separated for return flights and stacked horizontally to save space.