Abstract: A multi-stage torsional damping device utilized for a clutch driven member comprising a low-rate primary stage to eliminate transmission gear rattle occurring in the neutral transmission position, a medium-rate stage to cushion the torque transference from the low-rate primary stage to a high-rate final stage without impacting the damper parts. The primary stage and second stage are frictionless while the normal high-rate third stage provides friction damping. The device may also have harmonic damping properties to cushion out engine impulses of any differential magnitude that occur during and within its operating range.

Abstract: Speed and temperature responsive drive apparatus includes a friction clutch which may be interposed between a vehicle engine and its associated cooling system fan. The clutch is biased toward engagement by a conventional spring and also by a thermal spring. A bladder develops a centrifugal pressure upon rotation of the apparatus, which pressure relieves the biasing forces of both springs.

Abstract: A capacity control arrangement for a rotary vane fluid displacement apparatus, such as a rotary vane compressor, having a vane retaining means that may be moved to engage and retain the vanes in their retracted or nonworking position within the rotor defined guide slits. The retaining means are actuated to the vane-engaged position by hydraulic control fluid which is communicated to the retaining means in response to an external parameter sensed by a control means.

Abstract: A clutch driven plate assembly providing a variable torsional spring rate and variable friction damping torque. The assembly utilizes a splined hub with an outer flange notched at spaced locations around the circumference to receive a series of flat springs actuated by caged needle rollers mounted between a pair of side plates sandwiching the flange therebetween; one of the plates carrying the friction facings. The flat springs and rollers can be used alone or in combination with helical compression springs, and variable damping friction is accomplished either through the rollers alone or in conjunction with centrifugally actuated balls positioned in an annular tapered groove between the hub flange and one of the side plates.

Abstract: In organic substrates having a surface coating including a first layer of plasma-polymerized alkane and a top layer of plasma-polymerized polar organic compound exhibit improved wettability and hydrophilicity, and a method for applying such coatings to the surfaces of inorganic substrates to improve their hydrophilicity and wettability characteristics.

Abstract: A chain-belt adapted for use in a pulley drive system and comprising a plurality of connected ranks or sets of interleaved links having generally trapezoidal load blocks between adjacent pivot means which join the adjacent ranks or sets of links together to permit articulation of the chain belt. The load blocks are of generally laminated construction of a plurality of plates and resilient means are located between adjacent plates in at least some of the load blocks. Preferably an elastomeric material such as rubber is chosen as the resilient means and each load block incorporates the resilient means.The structure is effective to reduce noise generated upon engagement and disengagement of the chain-belt with the pulley flanges when compared to a chain-belt of connected ranks of links and with laminated load blocks therein but without the resilient means.

Abstract: A centrifugal pump assembly comprising one or more bowl castings each housing an impeller and also two or more individual fluid passageways for the flow of fluid discharged by an impeller to the next impeller, the passageways having some exterior walls defining the exterior of the assembly. By changing the number of the individual passageways, the specific speed of the pump, i.e., the ratio of the amount of energy imparted to the fluid and the amount of fluid being pumped, can be changed.

Abstract: A clutch driven plate assembly for use in an automotive vehicle having a multi-part hub assembly with the capability of trapping lubricant in the gear teeth when the assembly is subjected to centrifugal force in operation. The hub assembly includes an inner hub in axial splined engagement with the transmission input shaft, an outer hub with an integral radial flange and in splined engagement with the inner hub through helical splines. The inner hub is formed of a light weight non-metallic material, or the outer hub houses an annular spacer formed of an impact and sound-absorbing material to cushion the inner hub upon reciprocation thereof within the outer hub, the outer hub having end plates which act as a dam for lubricant within the intermeshing helical gear teeth.

Abstract: A continuously variable transmission (CVT) with adjustable width pulleys has its belt tension and ratio controlled by an electronic-hydraulic system. The CVT also has a fluid-cooled clutch on the output pulley shaft. The engine speed, transmission output speed, throttle position, and gearshift position are sensed, and signals representing this information are passed to a computer. The computer provides set point signals denoting desired engine speed, line pressure, and clutch cooling condition to a control system. An electromechanical valve assembly regulates fluid flow to the CVT primary sheave, to control CVT ratio as a function of the computer provided set engine speed signal. A second electromechanical valve assembly controls the line pressure in the hydraulic system, which is applied to the secondary pulley to maintain belt tension, as a function of the set pressure signal provided by the computer.

Abstract: A process for preparing an asymmetrical pentaerythritol compound containing both trivalent and pentavalant phosphorus. The process involves merely bubbling oxygen into a solution containing 3,9-dichloro-2,4,8,10-tetraoxa-3,9-diphosphaspiro [5,5] undecane.

Abstract: An improved method of manufacturing a swash plate assembly for use in a compressor, fluid motor or similar device in which a plurality of pistons are connected, by means of connecting rods, to a swash plate which drives (or is driven by) the pistons. A plurality of piston assemblies are made by casting the piston around one end of a connecting rod section which is formed with a ball thus providing a ball-socket connection therebetween. Mating spherical ends with through-bores to receive the piston connecting rod section are cast-in-place and captured in sockets within the swash plate. The connecting rod section of the pistons is mated to the through-bores of the mating spherical ends and are positioned in an appropriate fixture to a fixed final relationship. The connecting rod sections are secured to the sidewall of each through-bore by a means such as electron-beam welding to secure the overall length of the final assembly.

Abstract: A process involving the reaction of pentaerythritol with phosphorus oxychloride. A solvent is used in the process, but not catalyst or amine (as a hydrogen chloride acceptor) is required.

Abstract: A variable diameter pulley assembly for use with a power transmission belt and adapted to be connected to a shaft comprising opposed sets of axial and radial movable generally triangular or trapezoidal-shaped flange members, the sides of opposed sets being in substantial engagement to provide at all pulley diameters a generally cylindrical and continuous surface for belt engagement. A pair of axially movable hubs supports the flange members, and each hub has guides for guiding the flange members in their axial and radial movements. A central cam member with conical cam surfaces may be provided which cooperates with cam follower surfaces of the flange members whereby axial movement of the flange members causes radial movement thereof.

Abstract: A series vibration damper assembly which includes a control device that will allow the damper to react differently in the coast direction than in the drive direction. The vibration damper assembly includes a housing having inwardly offset drive straps, a hub having radial arms aligned with the drive straps in a static condition, a plurality of spring separators positioned between the hub arms and separating damper springs received between the hub arms. The improvement of the present invention relates to a curved bypass thrust member secured to each hub arm and projecting through two damper springs and the spring separator to abut the next spring separator and prevent compression of the two springs in the coast direction.

Abstract: An improved mechanical seal assembly comprising a generally stationary seal ring and rotatable seal ring, each with opposed seal faces, the stationary seal ring being connected to a stationary housing by elastomeric keys. One of said seal rings is constructed of a material such as a carbon graphite composition which is more brittle than the other which is constructed of a much harder less brittle material. As in most seals of this character, the seal faces are lubricated by a fluid film flowing radially across the opposing faces. In the absence or upon failure of the film, the rings can seize, generally resulting in a breakage of or other damage to the more brittle seal ring. However, the elastomeric connecting keys provide a cushion for absorbing dynamic forces in the tangential direction, to distribute bearing loads substantially evenly and to allow radial deflections of the stationary seal ring relative to the housing due to thermal and pressure effects.

Abstract: A clutch driven plate assembly for use in an automotive vehicle having a hub assembly with an inner hub in splined engagement with a transmission input shaft, an outer hub, and a hub flange integral with one of the hubs and extending between the clutch and spring retainer plates. Either the inner and outer hubs or the inner hub and transmission input shaft are operatively connected by helical splines or threads allowing relative axial movement between the hubs resulting in a screwing and unscrewing action when the clutch is engaged, the transmission is in neutral and the engine is at idle rpm to dissipate the irregular impulses of the vehicle engine.

Abstract: A clutch driven plate assembly utilizing cushion springs secured to a clutch plate and having the annular friction facings bonded directly thereto without the use of rivets. Each cushion spring has an offset portion that substantially overlaps the next adjacent cushion spring with a substantial flat area available for bonding of the friction facings thereto, and the cushion springs will function to provide cushioned clutch engagement.

Abstract: An asbestos-free friction material characterized by good friction and wear properties. It comprises the combination of a binder resin, copper oxide, antimony sulfide and an aromatic polyamide resin. Barytes is also a valuable additive in the combination.

Abstract: A pressure relief valve to control the opening of a port between two pressure vessels at a predetermined time to eliminate differential pressure between the vessels. More particularly, the lock-up clutch assembly in a torque converter is actuated due to a pressure differential on the opposite sides of the clutch or piston plate, and the pressure relief valve will open upon deceleration of the vehicle driven by the torque converter to equalize the pressure on the opposite sides of the clutch plate and allow disengagement of the clutch plate from the torque converter housing.

Abstract: Fittings for the mounting of a radiator to the metalwork of an automotive vehicle, or for mounting attachments such as fan shrouds or cooling fans, are suitably positioned within the core of the radiator and attached in position during the bonding cycle for the radiator assembly or adhesively joined to the radiator core after the bonding cycle.