Abstract: In one aspect, the invention is directed to a hockey net protector including an outer layer and an inner layer. Tho outer layer includes an elongate band of tear resistant and puncture resistant material. The outer layer has an inside face, an upper edge and a lower edge. The inner layer has a plurality of grommets mounted thereon for connecting the protector to a hockey net.

Abstract: A transportable basketball system having components which are arrangeable in a play configuration during which a basketball-related game can be played, and also in a transport configuration during which said transportable basketball system can be easily transported between a sand covered outdoor environment and a remote location. Preferably, the transportable basketball system comprises a wind-transmissive backboard structure having a backboard surface disposed substantially within a first plane, bounded by a frame structure, and characterized by a high degree of air permeability (i.e. transmissivity) across said backboard surface so that air currents, expected on said covered environment, can pass therethrough with minimal resistance, yet deflect a lightweight basketball when tossed thereagainst during basketball-related games.

Abstract: The present invention provides a removable sports item cover, preferably a ball or puck cover, and methods using the sports item cover that greatly facilitate the process of obtaining a autograph on the sports item at a sporting event. The ball cover can include a writing instrument attachment for removably securing a writing instrument such as a pen to the cover. The ball cover can include an autograph opening that allows the ball to be autographed without removing the cover. Therefore, the ball cover allows a fan to conveniently pass a sports item for signature to an athlete, along with an attached writing instrument, thereby facilitating the autograph process. The ball cover can also include a lanyard attachment that allows the ball to be worn around a fan's neck.

Abstract: A ball includes a core, and two 8-shaped leather cover pieces secured onto an outer peripheral portion of the core with such as the adhesive materials. A water-proof outer layer is formed on the outer peripheral portion of the core for protecting the core and for preventing the core from being wetted, the 8-shaped cover pieces are secured onto the outer layer. The outer layer includes an 8-shaped seam for forming two 8-shaped recesses and for receiving the cover pieces. The seam has a number of bulges for simulating the raised seam or stitches of the typical balls.

Abstract: An inflatable device, such as a sport ball, includes a tubular elastomeric member inserted into and attached to a rubber carcass and having a valve slit at a bottom wall thereof. A tubular rigid stem is inserted into a receiving hole in the elastomeric member and is spaced apart from the valve slit so as not to deform the valve slit. The rigid stem confines a passage communicating with the valve slit to admit ambient air into the carcass via the passage and the valve slit.

Abstract: A continuously variable transmission, provided with two adjustable pulleys, each pulley comprising a pair of mutually displaceable essentially frusto-conical pulley sheaves having a radial dimension provided on a pulley shaft, each sheave having a sheave face, whereby the sheave faces of a pulley are mutually oriented at a pulley angle, and with an endless flexible belt for transmitting torque comprising two lateral side faces, which are mutually oriented at a belt angle ( alpha ) such that the flexible belt tapers radially inwardly and which are intended for interacting with the sheave faces of a pulley under the influence of a clamping force to be exerted on the flexible belt by the sheaves. The belt angle is marginally, but notionally, larger than the pulley angle (beta) of at least one pulley for at least a substantial part of the radial dimension of the pulley sheaves.

Abstract: A split sprocket assembly, related apparatus, and a method of mounting a sprocket to a rotatable structure, such as a drive or idler drum, are disclosed. In one embodiment, the sprocket assembly is comprised of at least three sections or segments, each of which is secured to the adjacent section or segment by a fastener, such as a tangentially-extending bolt and nut combination. The sprocket assembly includes a plurality of receivers, each for receiving a key that corresponds to a keyway formed in the rotatable structure. In one embodiment, at least one of the keyways is truncated and, thus, extends only partially across the rotatable structure in the axial direction. A key substantially identical to the truncated keyway in length and width is placed therein, such that the sprocket is prevented from traveling or “walking” along the rotatable structure.

Abstract: In a sliding contact guide for a chain, a guide body is composed of a shoe having a front surface on which the chain slides, and a plate-receiving portion provided on the back of the shoe. The shoe and plate-receiving portion are integrally molded from a synthetic resin. A reinforcing plate is inserted and fitted into a longitudinal slot in the plate-receiving and the sliding contact guide is attached to a frame by a pivot pin which extends through aligned mounting holes in the guide body and the reinforcing plate. Locking pieces formed in the plate-receiving portion, have tapered surfaces on their tips that engage locking holes in the plate and exert a biasing force on edges of the locking holes which urges the plate against the back of the shoe. The reinforcing plate and the guide body are reliably secured together and, even when the guide is vibrated, movement of the reinforcing plate in the slot of the guide body is prevented, so that low noise and long life are attained.

Abstract: A synthetic resin guide for a chain, or other flexible transmission medium comprises a synthetic resin guide body having a shoe on which the transmission medium slides, and a slotted, plate-receiving portion integrally molded on the back side of the shoe for receiving a reinforcing plate. The plate-receiving portion is composed of a pair of opposed, longitudinally extending, slot-defining walls. A convex pressing member, integrally molded with one of the walls protrudes into the slot through a partially cut-away portion of the wall and exerts a resilient pressing force on the reinforcing plate. The guide suppresses shock noises due to wobbling of the guide during operation. Increased molding tolerances are made possible, and higher productivity in the assembly of the guide is achieved.

Abstract: A tensioner lever for an engine timing chain comprises a synthetic resin lever body including a shoe having a chain-contacting sliding surface, and a spring-receiving portion on the back of a shoe. A laminated sheet spring is fitted into a slot formed in the spring-receiving portion along the longitudinal direction of the lever. The synthetic resin lever body is pivoted on a pivot shaft mounted on an engine, and an end of the laminated sheet spring is locked into a groove in the pivot shaft so that the spring can be stressed and thereby exert a tensioning force on the chain through the tensioner lever. The tensioner lever produces stable and quiet operation of the chain, and is more compact and less expensive than a conventional tensioner.

Abstract: A sprocket includes a bore for receiving a bearing, and a pair of protecting casings engaged onto the sides of the sprocket for shielding and protecting the bearing, and for preventing dirty particles or the other particles from engaging into the bearing to damage the bearing, and for increasing the working life of the bearing and the sprocket. The bearing includes an inner sleeve having an orifice, the casings each includes a hub secured in the orifice of the inner sleeve. The casings each includes a peripheral fence having a chamber for receiving grease.

Abstract: A seamed, conformable belt including a substrate having first and second opposing substantially planar surfaces, a first end, and a second end, wherein the first end and the second end of the substrate form a first seam, and an elastomeric layer having a first end and a second end, wherein the elastomeric layer is adjacent and in contact with the first surface of the substrate and wherein the first end and the second end of the elastomeric layer form a second detachable, substantially planar seam.

Abstract: A window operator with means for electric operation of windows and comprising a magazine (8, 9) for an opening member (80), a drive member (10) for the opening member (80), an electric motor (5) and a worm gear (15, 40 ) coupled with the shaft (41) of the motor. A preferably static self-locking reduction gear is inserted between the worm gear (40, 15) and the drive member (10). The worm (40) and the worm wheel (15) of the worm gear are furthermore supported so that their respective axes of rotation (41, 63) are mutually movable.

Abstract: A Continuously Variable Transmission (CVT) that uses a gear which changes gear size, along with an innovative gear train to achieve different gear ratios. The CVT overcomes the disadvantages of other designs, as it is a purely mechanical drive system. The CVT is an electro-hydraulically operated device, allowing infinite precision and control, using custom configurations, based on information from engine management systems installed in most modem vehicles. The CVT provides improved vehicle fuel efficiency, acceleration, ease of vehicle drivability and increased power transfer. The CVT minimizes engine stress due to a lower range of revolutions. Also, stress on the vehicle's drive-train is minimized, as there is no sudden transition in drive-shaft RPM as the gears change. The CVT allows an engine to run at an optimal range for fuel efficiency and torque, as the engine no longer has to cycle through the normal range of revs as the gears change.

Abstract: A differential gear assembly including a differential housing. A pair of side gears substantially axially aligned and spaced apart from each other, wherein the side gears are adapted to be supported by the differential housing and to engage axle shafts. A pair of pinion gears substantially axially aligned and spaced apart from each other, wherein the pinion gears are adapted to engage the side gears. A ring gear is mounted externally to the differential housing and a pinion pin engages and extends diametrically across the ring gear. The ring gear includes features adapted to receive the ends of the pinion pin and to position the pinion pin relative to the ring gear such that a center of mass of the ring gear is aligned with a center of mass of the pinion pin.

Abstract: A differential gear assembly including a differential housing, a pair of side gears substantially axially aligned and spaced apart from each other supported by the differential housing and engaging an axle half-shaft, and a plurality of pinion gears substantially axially aligned and spaced apart from each other. The pinion gears engage the side gears and include an outwardly facing first side and an inwardly facing second side. A ring gear is mounted externally to the differential housing and includes features which engage the first sides of the pinion gears to support the pinion gears within the differential gear assembly while allowing rotational movement of the pinion gears.

Abstract: A differential gear assembly including a differential housing and a ring gear mounted externally to the differential housing by a clamp. The differential housing and the ring gear each include an annular flange extending therefrom and the clamp includes a pocket which is adapted to receive the annular flanges therein. In another aspect, the flanges include opposing angled surfaces and the pocket includes opposing angled sides, whereby when the clamp is placed to the flanges, the angled surfaces of the flanges engage the angled sides of the clamp such that the clamp provides an axial clamping force to the flanges.

Abstract: A transfer case, which may be used to distribute the torque selectively between the primary and secondary driving wheels of an automotive vehicle, includes an input element and two output elements located along a common axis. It also includes a magnetic particle clutch and a planetary gear set which are both organized by about the same axis. The clutch and planetary set are connected together such that they provide a direct path through which torque is transferred from the input element to one of the output elements without slippage. The arrangement further provides a slip path through which torque is transferred from the input element to the other output element with slippage, and this path has two segments, one through the planetary set and the other through the clutch and planetary set. The clutch path accommodates slippage and the proportion of torque transferred through the slip path depends solely on the electric current conducted through the clutch.

Abstract: The invention relates to a method of compensating for the influence of changes of speed of a rotary component of an adjustable clutch upon the control torque characteristic curve of the clutch in the power train of a motor vehicle wherein the clutch operates between the rotary output element of the engine or another prime mover and a rotary input element of a change-speed transmission. The method includes the steps of monitoring the rotational speed of the clutch and varying the required positions of a mobile adjusting member for the clutch as a function of changes of the monitored rotational speed. The invention also relates to the power train wherein the influence of changes of rotational speed of the aforesaid component upon the characteristic curve can be varied in accordance with the novel method.

Abstract: There are arranged an engine 10 having idle-stop control means and an automatic transmission 20 having as a hydraulic-pressure supply source a main pump 22 driven by the engine 10 to perform speed change control. There are arranged a bypass hydraulic passage 45 for ensuring communication between said main pump 22 and a point immediately before an engagement-pressure supply port of a forward engagement element L/C in the automatic transmission, a switching valve 44 on the bypass hydraulic passage 45 for allowing switching between the communicating state and the non-communicating state, and switching-valve control means for switching the switching valve 44 between the communicating state and the non-communicating state. With this, the main pump is stopped at idle-stop control to supply the hydraulic pressure required for restart, allowing smooth running.

Abstract: The invention relates to an actuating device for an automatic transmission of a motor vehicle. To allow the motor vehicle to be operated safely and managed conveniently, the invention makes provision for the actuating device to have not only a first device, by which a parking interlock can be engaged and released in normal operation of the actuating device, but also a second device, by which the parking interlock can be engaged in the event of a malfunction.

Abstract: In order to reduce shift shock in shifting from a 2 driving range to a 3 driving range and improve the endurance of an automatic transmission, a 2-3 up-shifting shift control device of an automatic transmission of the present invention is provided, comprising a vehicle speed sensor, a shift lever position sensor, a throttle position sensor, a shift control unit, and a shift drive unit performing a predetermined 2-3 upshifting drive control operation by controlling hydraulic pressures in response to the sensors.

Abstract: A system and method of controlling an automatic clutch to prevent a motor vehicle engine from stalling is disclosed. The method includes the steps of determining an engine stall threshold, detecting accelerator pedal actuation, detecting current engine speed, and comparing current engine speed to the engine stall threshold. If the engine speed is below the engine stall threshold, a controller detects and compares vehicle acceleration to predetermined threshold acceleration such that the automatic clutch is actuated only when the vehicle acceleration is below the threshold acceleration. The system includes the step of detecting foot brake position such that the automatic clutch is only actuated if the foot brake is properly actuated. The controller will then actuate the automatic clutch to proportionally decouple the engine from the transmission to prevent engine stall. The automatic clutch will remain open until detecting a predetermined clearing condition.

Abstract: An exercise device for leg exercises comprising a pair of foot pedals connected to actuation rods. While an operator is in a seated position, the operator uses their foot to apply pressure to the foot pedals so that the rod telescopes into and out of a bearing block in response to the applied pressure. A crossbar, elevated off ground by a pair of arched base bars, supports the bearing block for the telescoping oscillations.

Abstract: An exercise machine has seat and back rest portions which are hinged to each other and independently pivotally supported on a support frame. The seat and the back rest portions are initially in a horizontal position to enable the user to exercise in a lying down position. The seat has an adjuster by means of which it can be angularly lowered to any one of a number of positions with the rear portion lowered more than the front portion. The front portion of the back rest which is hinged to the rear of the seat is lowered along with the seat to bring the back rest to the selected upwardly angulated position. A pair of lever arms are connected together at their inner ends and extend angularly outwardly from each other. Weights are connected to the inner ends and handles are connected to the outer ends for grasping by the user. Height adjusters are provided on the handles and arms to enable adjustment for persons of different sizes.

Abstract: An exercise dumbbell system includes a handle and weight plates maintained in spaced relationship at opposite ends thereof. Weight selectors are movable laterally into and out of engagement with respective weight plates to secure them relative to the handle. Each weight plate is provided with a pathway having at least one notch that opens upward, and at least one groove that is bounded above by a lip. The selectors have respective weight engaging portions that travel along respective pathways to alternatively underlie different combinations of the weights.

Abstract: An abdominal exerciser, comprising: a base frame; a seat having a seat pad which is secured on the base frame; an upper arm having a first end and a second end; a lower arm having a first end and a second end, the first end of the lower arm connecting on and laterally extending from the base frame, the second end of the lower arm pivotally connecting to the first end of the upper arm; a vertical bar being located behind the seat pad and connecting with the second end of the upper arm, the vertical bar having a first end and a second end; a handle pivotally connecting to the first end of the vertical bar; and a resilient mechanism interconnecting the base frame and the second end of the vertical bar.

Abstract: A synthetic roll shell, as well as its manufacture and utilization in press rolls, used for the purpose of measuring the pressure progression in a press nip of a machine for the production and/or conversion of a paper, cardboard, tissue or other type of fiber web.

Abstract: A plastic bag making machine which includes a web sensor, a punch station, a sealing and cutting station, and a wicketer and stacking station has its punch apparatus is carried on a punch carriage movable in a direction transverse to the web feed direction and its conveyor carried on a conveyor carriage movable in such transverse direction.

Abstract: Disclosed herein, for example, are methods and apparatus for forming carton blanks. In one such method, a first web of material and a second web of material may be provided. At least one line of disruption may be formed in one of the webs of material. A combined section may be formed that includes a section of the first web of material and a section of the second web of material. Thereafter, a carton blank may be formed by separating the combined section from the first web of material and the second web of material. Also disclosed herein, for example, are various carton blanks and cartons.

Abstract: A method and apparatus for forming a bag provides a tube of material that is passed over a former. A portion of the tube is folded over the former to define the rim of the bag. Portions of the rim are then welded. The apparatus includes arms that move transverse to the tube. The arms carry crimping fingers that pivot to fold the tube up and in over the former.

Abstract: A method of producing a packaging laminate (10) in which a web is provided with through-going holes (2) which are covered on one side with a first outer layer (3) on the one side of the web and with a second outer layer (4) on the other side of the web in such a manner that the first and second outer layers (3 and 4) are permanently sealed to one another within the regions of the opening contour of the through-going holes. In order to ensure the permanent seal between the two outer layers (3 and 4), the web is subjected, after application of the first outer layer but prior to application of the second outer layer, to so-called flame-treating whereby accessible parts of the first outer layer within the regions of the through-going holes (2) are activated or polarised by means of one or more gas flames directed at the other side of the web.

Abstract: There is provided an apparatus for securing a rotor to a drive cone in a centrifuge. The apparatus includes (a) a nut, movable in an axial direction in the drive cone, (b) a screw for passing through a region of the rotor and for engagement with the nut, and (c) a spring located between a surface of the nut and a surface of the drive cone. The screw, when tightened into the nut, moves the nut in the axial direction to compresses the spring between the surface of the nut and the surface of the drive cone.

Abstract: An optical waveguide element that can stably and inexpensively form an optical waveguide of low loss and low stress in a glass material by ion exchange of Ag ions, and to provide a process for producing the same are provided. The invention provides an optical waveguide element comprising a multicomponent glass material, which is Na2O-B2O3-Al2O3-SiO2 glass containing from 5 to 13% by mole of Na2O, in which an optical waveguide is formed by doping with Ag ions by ion exchange. The composition is preferably SiO2: 60 to 75% by mole, B2O3: 10 to 20% by mole, Al2O3: 2 to 10% by mole, Na2O: 5 to 13% by mole, Li2O: O to 1% by mole, As2O3: O to 0.5% by mole, and Sb2O3: O to 0.5% by mole (provided that As2O3 +Sb2O3: 0.01 to 1% mole).

Abstract: An ultraviolet ray-absorbing, colorless and transparent soda-lime-silica glass is disclosed, which glass is prepared by irradiating a cerium containing soda-lime-silica glass with light having wavelengths in far- to near-ultraviolet region and thereby reducing transmittance to light with wavelengths in the region of 300-400 nm.

Abstract: A method for the production of a cross-linked support matrix that in form of a bed will permit liquid flow velocities above 5 cm/h, preferably above 50 cm/h, to pass through the bed. The method is characterized in that it comprises the steps: (a) providing a starting support matrix that has pendent unsaturated groups, and (b) subjecting said starting support matrix to electron beam or gamma-ray irradiation. The use of a cross-linked support matrix produced by a method comprising the steps of: (a) providing a starting support matrix that has pendent unsaturated groups, and (b) subjecting said starting support matrix to electron beam or gamma-ray irradiation as a support matrix in liquid chromatography, cell culturing, step-wise solid phase synthesis of organic compounds, running catalytic reactions by the use of a solid phase bound catalyst.

Abstract: There is provided a process for renewing the activity of supported metal catalysts for the hydrogenation of carbon monoxide to form a mixture of hydrocarbons comprising decreasing the hydrocarbon content of the catalyst, preferably by contact with hydrogen-containing gas at elevated temperatures, impregnating under a non-oxidizing atmosphere with a solution of at least one of an ammonium salt and an alkyl ammonium salt, optionally in combination with up to five moles of ammonia per liter of solution to the point where it has absorbed a volume of solution equal to at least about 10% of its calculated pore volume; oxidizing the catalyst with a gaseous oxidant in the presence of the impregnating solution and activating the catalyst by reduction with hydrogen at elevated temperatures. Optionally, the catalyst is calcined after the oxidation step, and passivated after the activation step.

Abstract: There is provided a process for renewing the activity of used, supported metal catalysts for the hydrogenation of carbon monoxide to form a mixture of hydrocarbons comprising decreasing the hydrocarbon content of the catalyst, impregnating said catalyst under an non-oxidative atmosphere with a solution at least one weak organic acid, preferably a mono- or di-carboxylic acid, to the point where it has absorbed a volume of said solution equal to at least about 10% of its calculated pore volume, oxidizing the catalyst with a gaseous oxidant in the presence of the impregnating solution and activating the catalyst by reduction with hydrogen at elevated temperatures. Optionally, the catalyst is calcined after the oxidation step, and passivated after the activation step. A preferred means of decreasing the hydrocarbon content of the catalyst is contacting it with a hydrogen-containing gas at elevated temperatures.

Abstract: A process for activating a supported metal catalyst or catalyst precursor useful for the hydrogenation of carbon monoxide to form a mixture of hydrocarbons, comprising reducing with a hydrogen-containing gas at elevated temperature so that at least a portion is in the metallic state, impregnating under a non-oxidizing atmosphere with a solution of at least one member selected from the group consisting of ammonium salts, alkyl ammonium salts and weak organic acids, optionally further including ammonia, to the point where it has absorbed a volume of solution equal to at least about 10% of its calculated pore volume, oxidizing with a gaseous oxidant in the presence of the impregnating solution and reducing with hydrogen-containing gas at elevated temperatures to form an active catalyst. The steps beginning with the impregnation may be repeated. Optionally, the catalyst may be calcined after the oxidation step and/or passivated after activation.

Abstract: A process for enhancing metal catalysts for carbon monoxide hydrogenation comprising reducing the catalyst so that at least a portion is in the metallic state, impregnating under a non-oxidative atmosphere with a solution of a salt of at least one metal, optionally in combination with at least one of an ammonium salt, an alkyl ammonium salt, a weak organic acid and ammonia, oxidizing with a gaseous oxidant in the presence of the impregnating solution, and reducing to form an active catalyst. Used catalysts enhanced by the process are initially treated to decrease their hydrocarbon content. The treatment may be carried out in a single reactor, or by carrying out up to all steps after catalyst may be withdrawn from a reactor and returned to at least one reactor, both preferably during operations. Up to all steps may be effected in a subsequent reactor, or in specialized apparatus.

Abstract: In an exhaust gas purifying catalyst, an acid material with a high affinity with respect to an absorbing agent is dispersed and mixed in a catalyst layer, to which the absorbing agent is added, or a layer of the acid material is formed inside the catalyst layer in order to prevent the absorbing agent from moving from the catalyst layer into the carrier. This reduces the permeation of the absorbing agent added to the catalyst layer into a carrier, the evaporation and splash of the absorbing agent from the catalyst, and the deterioration in the durability and the exhaust gas purifying performance of the catalyst.

Abstract: A composition is provided that can be used, for example, in a fuel processor for a fuel cell system. The composition includes a first material such as a catalyst, and a second material such as a desiccant. The second material is capable of sorbing and desorbing a heat transfer material such as water, and is present in an amount sufficient to sorb an amount of the heat transfer material sufficient to remove a portion of the heat generated when the first material undergoes an exothermic reaction.

Abstract: Electrocatalyst powders and methods for producing electrocatalyst powders, such as carbon composite electrocatalyst powders. The powders have a well-controlled microstructure and morphology. The method includes forming the particles from an aerosol of precursors by heating the aerosol to a relatively low temperature, such as not greater than about 400° C.

Abstract: Heterogeneous catalytic component obtainable by reacting a porous inorganic support with a metallocene compound characterized in that the metallocene compound is defined by the following general formulas:

Abstract: The present invention is for a transition metal-free catalyst system for synthesizing high molecular weight, linear polymers. The system comprises a catalyst composition having: (a) a neutral compound having the formula AlR3, wherein R is an alkyl or hydride group; (b) a Lewis acid or Lewis acid derivative cocatalyst different from the neutral compound, wherein the cocatalyst reacts with the neutral compound to form an initiator; and (c) an activity-enhancing modifier, wherein the modifier reacts with the initiator to form the catalyst composition. The instant invention is also directed to a method for polymerizing at least one olefinic monomer comprising the step of contacting a feed containing the olefinic monomer under polymerization conditions with the transition metal-free catalyst composition.

Abstract: Chiral ligands and metal complexes based on such chiral ligands useful in asymmetric catalysis are disclosed. The metal complexes according to the present invention are useful as catalysts in asymmetric reactions, such as, hydrogenation, hydride transfer, allylic alkylation, hydrosilylation, hydroboration, hydrovinylation, hydroformylation, olefin metathesis, hydrocarboxylation, isomerization, cyclopropanation, Diels-Alder reaction, Heck reaction, isomerization, Aldol reaction, Michael addition; epoxidation, kinetic resolution and [m+n] cycloaddition. Processes for the preparation of the ligands are also described.

Abstract: A novel phosphine compound having excellent properties (chemical selectivity, enantioselectivity, catalytic activity) as a catalyst for asymmetric syntheses, especially asymmetric hydrogenation.

Abstract: A phosphine compound of formula (1) 1

Abstract: The photocatalyst according to the present invention which exhibits a high catalytic function in the visible-light range comprises an oxide composite having a junction formed by oxide semiconductors (I) and (II) which have photocatalytic properties with each other and whose energy levels of electrons at the bottom of the conduction band and energy levels of electrons at the top of the valence band in an energy band structure, based on the vacuum levels, differ from each other; at least one of the oxide semiconductors having photocatalytic properties even in the visible-light range. The oxide semiconductor (I) having photocatalytic properties even in the visible-light range is exemplified by a pyrochlore-related structural oxide Ce2Zr2O8.0, and the oxide semiconductor (II) by an anatase-type titanium oxide.

Abstract: A process and catalysts for the direct oxidation of an olefin having three or more carbon atoms, such as propylene, by oxygen to an olefin oxide, such as propylene oxide. The process involves contacting the olefin under reaction conditions with oxygen in the presence of hydrogen and a catalyst. The catalyst contains silver and titanium, optionally gold, and optionally, at least one promoter element selected from Group 1, Group 2, zinc, cadmium, the lanthanide rare earths, and the actinide elements. Suitable supports include titanium dioxide, titanium dioxide on silica, titanosilicates, promoter metal titanates, titanium dispersed on silica and promoter metal silicates.