Abstract: A method for forming a blade adapted to be attached to an earthworking vehicle and the resultant wear resistant blade has a wear surface assembly which includes a carbide insert sandwiched between a steel plate and a composite material within a pocket on the front surface of the blade spaced from the blade cutting edge.

Abstract: This invention relates to an apparatus for stabilizing a work piece of ring configuration on a base. The apparatus has a first ring fixed to the base and frictionally positioned within the work piece. A second ring has a portion within the other end of the work piece and a portion covering the other end of the work piece. A plurality of hold downs are connected to a base via hydraulic cylinders and are positioned about the work piece and have arms with rollers attached thereto. In response to actuation of the cylinders, the rollers are automatically swung into position over the second ring and the rollers forcibly urge the second ring and work piece in a direction toward the base.

Abstract: A method for forming a wear surface on a metal substrate has a slurry which includes wear resistant particles, powdered steel, and binder system positioned on the metal substrate by retaining walls for a time sufficient for drying the slurry and forming a composite material of preselected thickness "T". The retaining walls are then removed and the substrate and the composite material are heated and passed through a rolling mill compressing the composite material.

Abstract: The invention relates to an apparatus of unitary construction to fine-finish gear teeth. The apparatus is a worm having first and second end portions and first and second outer surfaces. The first and second surfaces define a common tooth profile. The first end portion is adapted for grinding and the second end portion is adapted for finishing.

Abstract: An apparatus for positioning a gear blank on a workpiece spindle of a gear generating machine. An indicating element orientates cutter blades of a milling cutter of a gear generating machine relative to a gear blank and rough cut teeth of the gear blank.

Abstract: During low speed operation of a turbocharged engine the transient response time of the engine from low speed and low loads to high speed and high loads is slow because of the slow response time to raise the boost pressure level from the turbocharger. The present invention provides an apparatus to improve the transient response time of the engine by causing at least a selected subset of the combustion chambers to be operated in a two-stroke pumping mode of operation while maintaining the others in a four-stroke mode, thus, increasing the airflow through the turbine of the turbocharger during low speed and/or low loads operation of the engine maintaining a high boost pressure level.

Abstract: The invention relates to a track bushing having an outer peripheral surface, an inner peripheral surface, a longitudinal bore, first and second end portions, and a center portion. The outer peripheral surface and the inner end portions have a preselected hardness greater than the center portion.

Abstract: A master brake die has a pair of adjustable die shoes. First and second shim packages each having a plurality of shims of a preselected width are positioned adjacent a respective die shoe and moveable therewith. A preselected number of shims from each shim package is controllably moved into an operative position between a stop surface and a respective die shoe.

Abstract: One way of reducing nitrogen oxide emissions from an engine having a plurality of combustion chambers is through exhaust gas recirculation. The present invention provides an apparatus for exhaust gas recirculation by causing at least a selected subset of the combustion chambers to be operated in a four-stroke reverse flow motoring mode of operation while the remaining combustion chambers are operated is a normal four-stroke mode. In the four-stroke reverse flow motoring mode of operation, exhaust gas is inducted into the combustion chamber of a selected subset of combustion chambers. The exhaust gas is then compressing and expanded in the combustion chambers. Cooling of the exhaust gas is achieved during the compression and expansion strokes. The cooled exhaust gas is then expelled from the combustion chambers to be mixed with fresh charge air.

Abstract: Presently available mounting brackets do not permit preassembly or require expensive and time consuming methods of manufacture. It is desirable to provide a mounting bracket which may be inexpensively manufactured, allows easy insertion of a flexible securing element and which may be preassembled prior to attachment of an elongate article it supports. The subject arrangement provides a mounting bracket including a substantially flat, elongate body having a mounting end portion and a securing end portion. The securing end portion extends both longitudinally and at an oblique angle from the mounting end portion so that the securing end portion is spaced apart from a carrier member to which the mounting bracket is attached. The securing end portion permits installation of a flexible securing element securing thereto the elongate article to be supported.

Abstract: An annoying problem with diesel engines is combustion noise especially under high speed, low load conditions. The problem is caused by the relatively long ignition delay period or the period of time from the start of fuel injection into the combustion chamber until ignition occurs. The length of the ignition delay period influences the severity of the noise produced as it determines the amount of fuel that is ready to be burned. The length of the ignition delay period is strongly dependent on cylinder gas temperature during the initial part of the fuel injection schedule. The present invention provides an apparatus to reduce the ignition delay period by elevating the temperature of the air in a selected one of the combustion chambers so that at the start of the compression stroke the air is elevated reducing the ignition delay period.

Abstract: Cylinder liners of internal combustion engines must be adequately cooled to obviate oil degradation, carbon packing in the ring area, and piston seizure. The engine includes a block which cooperates with the cylinder liners to define an upper and lower axially spaced coolant chambers. A sleeve is located in a groove defined in the cylinder liner and disposed between the upper and lower coolant chambers. The sleeve and the cylinder liner define a plurality of circumferentially spaced venturi throats. The venturi throats provide a relative long flow path and controls the flow rate of the coolant being communicated from the lower coolant chamber to the upper coolant chamber in order to dissipate heat away from the cylinder liner.

Abstract: This invention relates to a fuel combustion system for a lean burn internal combustion engine. Because of the lean fuel/air ratio, it is difficult to consistently achieve complete and thorough combustion within the main combustion chamber because of the relatively slow rate of flame propagation. The subject fuel combustion system includes a precombustion chamber assembly defining a prechamber having a preselected shape and volume and includes a plurality of ejection passages. The passages are of a preselected geometric cross-section for directing and controllably expanding burning gases from the prechamber into the main combustion chamber at a velocity greater than the speed of sound in order to penetrate and cause igniting and burning in the main combustion chamber for faster and more complete combustion.

Abstract: A retaining pin, a metallic washer and a resilient retaining ring for use in securing an earthworking tip to an adapter. Positive retention of earthworking tips on their adapters by their retaining pins during its work cycle is extremely important from an operational, as well as a cost, standpoint. The loss of the tips materially affects production in addition to the time-consuming expense of replacement or repair of the components. Not only must the tips be adequately retained, they must be capable of quick removal for replacement purposes. The retaining pin has an outer peripheral surface and an annular groove defined in the peripheral surface. The washer is slidably disposed on the pin. The washer has a frusto-conical side surface and an inner peripheral surface with an annular groove defined in the peripheral surface. The ring has a cross-section with a predetermined radial thickness and when assembled is disposed in locking engagement in a groove on the pin and the groove of the washer.

Abstract: The invention relates to a coupling assembly for connecting two members. The coupling assembly prevents excessive radial movement, scrubbing of the coupling members, and leakage of fluid being transferred through the coupling. The coupling assembly includes a tube end having a pair of spaced apart annular beads defining a groove for a resilient seal ring seated in the groove and the other member defined a bore for receiving the tube end. A guide ring substantially centers the tube in the bore whereupon a clamping assembly releasable connected to the tube is clamped to the other member securing the tube in the centered position while permitting limited axial movement of the tube.

Abstract: A friction brake mechanism having a pair of front brake assemblies and a pair of rear brake assemblies receives pressurized fluid at the same time and at the same pressure from a hydraulic control apparatus. Each of the brake assemblies has a brake piston movable in a chamber between a holding position and a releasing position and a plurality of brake plates and a plurality of brake disks interleaved with the brake plates. A first spring system is associated with the pair of front brake assemblies and a second spring system is associated with the rear brake assemblies. The first spring system provides a different force than the second spring system to cause the rear brake assemblies to be engaged a predetermined period of time ahead of the pair of front brake assemblies without any design change in the hydraulic control apparatus.

Abstract: Fast moving off-highway vehicles, such as trucks, may have restricted operating capability in rainy, wet weather because of foreign material, such as water, being ingested into their exposed air cleaner and thus their engines. To operate in these conditions it is desirable that their air cleaner be adapted to include an air inlet deflector assembly. The deflector assembly includes a plurality of formed shields and a splash deflector. The shields overlap the inlet ports and in combination with the splash deflector define a labyrinth path for air entering the air cleaner. The splash deflector includes downwardly inclined blocking edges to block and redirect material away from the inlet passages.

Abstract: This invention relates to a liquid-cooled piston ring carrier assembly and piston for internal combustion engines. The ring carrier assembly includes an annular metallic body and an enclosure member collectively defining an integral coolant channel. During engine operation, liquid coolant is directed to the coolant channel by way of an inlet passage in the skirt portion of the piston and an aligned inlet port in the ring carrier assembly. An outlet passage in the skirt portion of the piston and an aligned outlet port conveys coolant away from the coolant channel.

Abstract: The invention relates to a prelubrication system for an engine. It is desirable to prelubricate relatively large engines to prevent possible damage of certain components such as the crankshaft and camshaft bearings. Engines that must be started in a matter of seconds are provided with prelube pumps that run continually. During long periods of continuous prelube lubrication fluid being pumped upward into the upper rocker arm area may find its way into combustion chambers and result in damage of engine components. The present system provides a fluid level control device that prevents lubrication fluid from reaching the upper rocker arm area of the engine when the engine is not running and disables the control device when the engine is running allowing the supply of lubricant to reach the upper rocker arm area.