Abstract: A hybrid powertrain incorporates an engine, two motor/generator units and three planetary gearsets along with three torque-transmitting mechanisms to provide a two-mode compound-split electrically variable transmission.

Abstract: A powertrain incorporates two electrical units, two planetary gearsets in a radially-stacked package to provide a shortened length of the transmission. The output members of the electrical units are interconnected by a gear mechanism, which is drivingly connected with a conventional differential mechanism, which is aligned within the radial package of the electrical units. The electrical units combine with power from an engine to provide a two-mode compound-split electrically-variable transmission.

Abstract: An electrically-variable transmission includes an input shaft, an output shaft, two electric motor/generators, and four nodes between which three parallel power paths are defined. Two of the power paths are mechanical and one of the power paths is electrical. The electric motor generators provide continuously variable speed ratios; manipulation of the power paths at the nodes provides a plurality of continuously variable operating modes for increased efficiency and smaller motor size. The transmission also provides an equal forward/reverse system with an input split.

Abstract: A powertrain having a fuel cell prime mover, an electronic control unit, two motor/generator units, two planetary gearsets, and a plurality of torque-transmitting mechanisms is operable to provide three ranges of operation. During one range of operation, the power take-off unit operates at a constant speed. During the second range of operation, the power take-off unit, one of the motor/generator units, and the output shaft operate at a same speed, and during the third range of operation, both motor/generator units, the output shaft, and the power take-off unit operate at a same speed.

Abstract: A compound-split electrically variable transmission has two electrical power units, two planetary gearsets, a prime mover, and two selectively engageable torque-transmitting mechanisms. The torque-transmitting mechanisms are selectively engaged to provide a reverse and first range and a second range of operation, wherein the reverse and first range is an input-split range of operation and the second range is a compound-split range of operation. The torque-transmitting mechanisms are simultaneously engaged at an interchange point between the first and second ranges of operation. This interchange point is a synchronous speed interchange point, such that the torque-transmitting mechanisms are engaged and disengaged without slipping forces being transmitted.

Abstract: A two-mode, compound-split, electra-mechanical transmission utilizes an input member for receiving power from an engine, and an output member for delivering power from the transmission. First and second motor/generators are operatively connected to an energy storage device through a control for interchanging electrical power among the storage device, the first motor/generator and the second motor/generator. The transmission employs three planetary gear sets. Each planetary gear arrangement utilizes first, second and third gear members. Moreover, one gear member of the first or second planetary gear set is operatively connected to the input member, and one gear member of the third planetary gear set is selectively connected to ground. A lock-up clutch selectively locks two of the planetary gear sets in a 1:1 ratio.

Abstract: An electro-mechanical powertrain includes a pair of motor/generator units that are interconnected with a transmission output shaft through planetary gear mechanisms. One of the motor/generator units continuously supplies power to a power takeoff unit, which operates accessory devices and supplies power to a transmission output shaft. The second motor/generator unit continuously transmits power to a transmission output shaft except during a ratio interchange. A selectively engageable clutch is operable to connect the first motor/generator unit with the transmission output shaft during the ratio interchange when the second motor/generator unit is disconnected therefrom. Both of the motor/generator units are supplied with power by a fuel cell prime mover through an electronic control unit.

Abstract: An extreme ultraviolet lithography (EUVL) mask structure and associated method of formation. A first conductive layer is provided between a buffer layer and an absorber layer such that the buffer layer is on a multilayer stack. The multilayer stack is adapted to substantially reflect EUV radiation incident thereon. The absorber layer is adapted to absorb essentially all of EUV radiation incident thereon. A mask pattern is formed in the absorber layer. Formation of the mask pattern in the absorber layer is accompanied by inadvertent formation of a defect in the absorber layer. The defect is subsequently repaired. The mask pattern may be extended into the first conductive layer and into the buffer layer in a substantially defect-free process that exposes a portion of the multilayer stack. A second conductive layer may be provided on the absorber layer, wherein the mask pattern is also formed in the second conductive layer.

Abstract: An electro-mechanical powertrain includes a pair of motor/generator units that are interconnected with a transmission output shaft through planetary gear mechanisms. One of the motor/generator units continuously supplies power to a power takeoff unit, which operates accessory devices and supplies power to a transmission output shaft. The second motor/generator unit continuously transmits power to a transmission output shaft except during a ratio interchange. A selectively engageable clutch is operable to connect the first motor/generator unit with the transmission output shaft during the ratio interchange when the second motor/generator unit is disconnected therefrom. Both of the motor/generator units are supplied with power by a fuel cell prime mover through an electronic control unit.

Abstract: An extreme ultraviolet lithography (EUVL) mask structure and associated method of formation. A first conductive layer is provided between a buffer layer and an absorber layer such that the buffer layer is on a multilayer stack. The multilayer stack is adapted to substantially reflect EUV radiation incident thereon. The absorber layer is adapted to absorb essentially all of EUV radiation incident thereon. A mask pattern is formed in the absorber layer. Formation of the mask pattern in the absorber layer is accompanied by inadvertent formation of a defect in the absorber layer. The defect is subsequently repaired. The mask pattern may be extended into the first conductive layer and into the buffer layer in a substantially defect-free process that exposes a portion of the multilayer stack. A second conductive layer may be provided on the absorber layer, wherein the mask pattern is also formed in the second conductive layer.

Abstract: A regenerative transmission that utilizes three prime mover input modes. The transmission has at least one planetary gear set, and each planetary gear set has an inner gear member, an outer gear member and a plurality of planet gear members meshingly engaging the inner and outer gear members. The planet gear members are operatively mounted on a carrier in each planetary gear set. The outer gear member in each planetary gear set is grounded, and the inner gear member in each planetary gear set is connected to a respective motor/generator. An output shaft is provided and means are provided selectively to connect the carrier in each planetary gear set to the output shaft. A plurality of torque transfer devices selectively connect the prime mover input modes to the output shaft.

Abstract: An improved transmission particularly adapted for use with a constant speed engine. The transmission has an input shaft to receive power from the engine. A generator is associated with the transmission, and the generator is driven by the engine. A motor is powered by the generator. The transmission also employs a compound planetary gear set having two planetary gear sub-sets. Each planetary gear sub-set has an inner gear member and an outer gear member, each of which meshingly engage a plurality of planet gear members. One gear member of each planetary gear sub-set is conjoined. A second gear member of each planetary gear sub-set is also conjoined. The input shaft is operatively connected to one of the conjoined gear members, and the motor is operatively connected to the other of the conjoined gear members. The output shaft is operatively connected to the third gear member in the first planetary gear sub-set, and the third gear member in the second planetary gear sub-set is selectively connected to ground.

Abstract: A variable, four-mode, input-split, parallel, hybrid electric transmission for a vehicle. An input shaft receives power from the vehicle engine, and an intermediate output shaft delivers power to drive the vehicle. First and second motor/generators are employed as are energy storage devices, such as batteries, for accepting power from, and supplying power to, the first and second motor/generators. A control unit regulates power flow between the energy storage devices and the motor/generators as well as between the first and second motor/generators. A compounded planetary gear set and an intermediate planetary gear set are used. Each planetary gear sub-set and the intermediate planetary gear set has an inner gear member and an outer gear member, each of which meshingly engage a plurality of planet gear members supported on a carrier.

Abstract: A variable, two-mode, input-split, parallel, hybrid electric transmission for a vehicle has an input shaft receiving power from the vehicle engine, and an output shaft delivering power to drive the vehicle. First and second motor/generators are employed as are energy storage devices, such as batteries, for accepting power from, and supplying power to, the first and second motor/generators. A control unit regulates power flow between the energy storage devices and the motor/generators as well as between the first and second motor/generators. At least one planetary gear set is used. Each planetary gear set has an inner gear member and an outer gear member, each of which meshingly engage a plurality of planet gear members supported on a carrier. The input shaft is operatively connected to one of the gear members in the planetary gear set, and the output shaft is operatively connected to one of the other gear members in the planetary gear set.

Abstract: A one-mode, input-split, parallel, hybrid transmission for a vehicle has an input shaft which receives power from the vehicle engine, and an output shaft which delivers power to drive the vehicle. First and second motor/generators are employed, as are energy storage units, such as batteries, for accepting power from, and supplying power to, the first and second motor/generators. A control unit regulates power flow between the energy storage units and the motor/generators as well as between the first and second motor/generators. A planetary gear set has an inner gear member and an outer gear member, each of which meshingly engage a plurality of planet gear members. The input shaft is operatively connected to one of the gear members in the planetary gear set, and the output shaft is operatively connected to one of the other of the gear members in the planetary gear set.

Abstract: A two stage main pump has a first pump drivingly connected to a transmission input shaft, and a second pump is drivingly connected to the output member of a friction clutch that is spring applied and pressure released. The input member of the clutch is driven, through a pair of one-way clutches, by the transmission input shaft or the vehicle output, whichever is rotating more rapidly.

Abstract: A power transmission has a gear portion, a hydrostatic portion and a flywheel which can be selectively interconnected for transmitting power from an engine to an output shaft. The flywheel can be accelerated by the engine to a predetermined speed to store energy which is used in cooperation with the engine to provide driving power for acceleration of the vehicle. The power transmission has three ranges of operation with the engine in selective combination with the flywheel, gearing and hydrostatic portion. A fourth range is available through the gearing only.

Abstract: An actuating piston assembly (10, 110) for a torque transmitting device (11). The actuating piston assembly (10, 110) has a seal subassembly (35, 135) with a supporting annulus (36, 136) and a seal member (38, 138). The seal member (38, 138) is preferably bonded to the supporting annulus (36, 136). A generally radially oriented first wiping lip (55, 155) extends outwardly with respect to said seal subassembly (35, 135), and a generally radially oriented second wiping lip (56, 156) extends inwardly with respect to said seal subassembly (35, 135). A plurality of circumferentially spaced bores (41, 141) penetrate the supporting annulus (36, 136) and the seal member (38, 138). A plurality of dowel-like connecting rods (42, 142) are presented from at least selected bores (41 and 58 or 141 and 158).

Abstract: A hood (10) for a video screen (12) is disclosed as comprising an elongated peripheral enclosure (16) having a mounting end (18) and a viewing end (20). The peripheral enclosure (16) includes first and second sets of opposed walls (22,24) defining an enclosed passage extending between the mounting and viewing ends (18,20). A flange (28) is mounted on the mounting end (18) of the peripheral enclosure (16) to envelope the enclosure about the video screen (12). A fastener (26) attaches the mounting end (18) to the video screen (12) with a central viewing axis X of the peripheral enclosure extending at an acute angle A in the range of about 55 degrees to 75 degrees with respect to the video screen. Peripheral enclosure (16) has a sufficient length between the mounting and viewing ends (18,20) to obstruct light rays entering the peripheral enclosure from striking the video screen (12) perpendicularly.