Abstract: The high cost of fabricating a rotating rectifier assembly may be reduced in a construction including first and second tubular, generally cylindrical housing sections (12), (14), of insulating material in end to end abutment. Each of the sections (12), (14), has an interior wall (28), (40) including an elongated, inverted T-shaped slot (60) with the slot (60) in one of the sections (12) being circumferentially spaced from the slot (60) and the other of the sections (14) by about 180 degrees. Elongated buses (70) are located in the widest part of each of the slots (60) and each includes plural packaged diode mounting apertures (72). Packaged diodes 74 have combination terminal/mounting posts (76) located in a corresponding aperture (72) and further include an opposite terminal (80) extending to the interior wall (28), (40) opposite the corresponding slot (60). Fasteners (78) within the slots (60) secure the combination terminal/mounting posts (76) to the corresponding bus (70) in electrical contact therewith.

Abstract: The problems associated with patching, sealing and forming ice due to water run off and large imperfections on skating rinks is solved by the use of an additive for treating water which comprises a polymer selected from the group consisting of water gelling starches and polymers of acrylic acid and sodium salt commonly referred to as super absorbent polymers and means for dispersing the polymer in water. The polymer absorbs water, which may be tap water at a temperature in the range of 45.degree.-55.degree. F., producing a generally homogenous mixture with slush-like consistence, when mixed with the water. The mixture may then by applied where patching, sealing or the formation of ice is required. The frozen mixture formed has desirable characteristics for skating. The invention also encompasses novel methods for patching, sealing and forming ice.

Abstract: In order to avoid carbon buildup and to assist fuel atomization, a fuel injection system (40) includes a fuel injector (42) associated with the upstream portion (44) of a combustor (10). The fuel injector (42) has a fuel flow passage (46) in communication with a source of fuel (14) and terminating in the upstream portion (44) of the combustor (10). The fuel injection system (40) also includes a primary oxidant delivery tube (20) associated with the upstream portion (44) of the combustor (10). The primary oxidant delivery tube (20) defines a primary oxidant flow passage (48) in communication with a source of oxidant (12) and terminating in the upstream portion (44) of the combustor (10). The fuel injection system (40) further includes a secondary oxidant delivery tube (50) associated with the upstream portion (44) of the conbustor (10).

Abstract: A power transmission belt having longitudinally spaced pairs of blocks on the opposite surfaces of a neutral belt portion thereof. The blocks are formed of hard synthetic resin materials having fibers distributed therein. The fibers may be provided in the form of distributed short fibers, fabrics, and one or more different types of fibers may be utilized in the respective blocks. The fibers include carbon fibers, aramid fibers, and silicon carbide fibers. The neutral belt is provided with longitudinally spaced projections on the upper and lower surfaces thereof and the blocks are provided with complementary recesses receiving the projections. The recesses are preferably deeper than the height of the projections, whereby the distal surfaces of the blocks may be urged with high frictional engagement against the flat surfaces of the neutral belt.

Abstract: A measuring tape device which includes a casing having an aperture through which a coilable measuring tape can be extracted and retracted. A coilable measuring tape is disposed in the casing with a distal end projecting from the aperture. A first brake mechanism is mounted on the casing for normally applying a controlled drag on the tape which allows the tape to be extracted or retracted against the drag to any given length and held at that length. A second brake mechanism is mounted on the casing and is selectively operable for applying a positive lock on the tape greater in magnitude than the drag of the first brake mechanism, to prevent accidental extraction or retraction of the tape.

Abstract: An improvement is provided in a trolling motor of the type having a propeller, a housing with axially spaced leading and trailing ends, a shaft carrying a propeller and journalled for rotation in the housing, and a drive for rotating the shaft and propeller. The housing trailing end has an annular, radially inwardly facing surface and the propeller has a hub with an annular, radially outwardly facing surface on which blades are mounted. The housing, shaft and propeller are mounted relative to each other so that the radially inwardly facing housing surface is radially outside of and in axially overlapping relationship with the radially outwardly facing propeller surface.

Abstract: An apparatus and method for individually printing signatures during delivery to a binding line conveyor. A plurality of signatures are provided at a feeding station for delivery to a binding line conveyor. The signatures are transferred by means of a transfer conveyor which extends from the feeding station to the binding line conveyor. The transfer conveyor is adapted to receive one signature at a time from the feeding station and to transfer the signatures to the binding line conveyor. In addition, the signatures are individually printed in a direction perpendicular to the backbones during delivery to the binding line conveyor.

Abstract: Dishwasher dispensing structure consisting of a reservoir for storing a supply of additive and having an outlet, a cover mounted for movement relative to the reservoir between (a) a closed position and (b) an open position, a trigger mounted movably between a cover block position and a cover release position for selectively maintaining the cover in its closed position and releasing the cover to its open position, a cover release member movable by the timer mechanism through a first prescribed path in response to operation of the timer mechanism in a first direction through a portion of the path during one portion of the operating cycle and to retrace the path portion in a second, opposite direction during another portion of the cycle, trigger moving structure movable in a third path as the cover release member moves through the one portion of the cycle and in a fourth path that substantially retraces the third path as the cover release member moves in the another portion of the cycle, and cooperating structur

Abstract: The problem of efficiently starting a motor (16) which is used to start an engine (12) during engine start is solved with a motor control unit (30) which includes a resolver (34) having a primary winding (34P) coupled to an oscillator (36). The resolver (34) includes two single-phase secondary windings (34S1, 34S2) which are placed in space-quadrature to each other and which develop signals proportional to the sine and cosine of the angular position of the rotor for the motor (16). The sine wave and the cosine wave are transferred to a phase conversion circuit (46) which develops three sinusoidal signals 120.degree. out of phase with respect to each other. Each of the three developed sinusoidal signals is supplied to a respective multiplier circuit (51-53) which also receives a current command. The output of each multiplier (51-53) is a sinusoidal current command signal.

Abstract: A portable gas chromatograph assembly for detecting chemical species comprises a sample collector/injector for introducing a sample into the system, a cryogenically enhanced stationary phase focusing zone for reducing the band width of the introduced sample, one or more resistively heated conductive film clad, fused silica capillary gas chromatograph columns and associated support structure for separating the sample mixture into its individual components, column temperature control electronics, and a detector for registering the sample components.

Abstract: The problem of measuring oil film thickness in a rotating housing (66) is solved using a noncontact liquid film thickness sensor. The housing (66) is rotatable about an axis (58) and includes a cylindrical outer wall coaxial to the axis. A plurality of U-shaped glass rods (70) are within the rotating housing (66) and have opposite legs (72, 74) mounted through openings in the outer wall. At least one leg (72) of each rod (70) is coplanar with a similar leg of each other rod. Each rod (70) has a different length between its opposite legs (72, 74). A light source (76) is provided outwardly of the housing (66) and coplanar with the coplanar legs (72). A sight glass (80) or other sensing device is provided outwardly of the housing (66) proximate the path of movement of the opposite leg (74) of each of the rods.

Abstract: A control for a window operator is operable to control incremental movement of a window. The control includes means for developing a command to selectively move the window in a direction to an open or closed position, and means for determining when a plurality of motor drives have moved the window a preselected incremental distance. Means are coupled to the developing means and the determining means for energizing each of the motor drives if a command is developed, until the motor drives have moved the window the preselected incremental distance and thereafter deenergizing the motor drives until another command is received to move the window a subsequent incremental distance in the selected direction.

Abstract: A power augmented gas turbine starter system which has a starter including a casing rotatably mounting a turbine wheel therewithin. A low pressure air supply communicates with the casing. A combustor is associated with the low pressure air supply for receiving air therefrom and supplying a flow of hot gas to the starter for augmenting the power of the starter. The air supply may be a bleed air conduit from an auxiliary power unit or from a main propulsion engine, and the combustor may be removably mounted directly in-line within the air supply conduit. The invention contemplates the use of a single auxiliary power unit and a single combustor for supplying a flow of hot gas to two or more gas turbine starters associated with their respective main propulsion engines. A cross-bleed circuit may be provided so that cross-bleed from one main engine can be used to start another main engine by providing bleed air for the other engine's gas turbine starter.

Abstract: The invention contemplates incorporation into a reel of the type having a rotor with an associated bail that is movable between closed and open positions and automatically returns to a closed position upon the operation of a crank handle. According to the invention, structure is provided for selectively, removably attaching a trigger and a bail supporting member so that the reel can be used with the quick-release or manual systems and readily converted between the two systems as desired by the user.

Abstract: A fuel injector 46 for a turbine engine includes an elongated, generally cylindrical metal casting 76 having a cylindrical surface 78 terminating in an end 84 having a frustoconical surface 86. A bore 88 having an axis 89 normal to the frustoconical surface 86 extends through the casting 76 to provide an air inlet 90 in the cylindrical surface 78 and a fuel and air outlet 94 in the frustoconical surface 86. The bore 88 is narrowed at the outlet to provide a constriction 110 thereat. A curved tube 96 of substantially lesser diameter than the bore 88 is located within the bore 88 to serve as a fuel injecting tube and has an open end 100 on and normal to the axis 89 and located in close adjacency to the constriction 110 without increasing the resistance to air flow through the constriction 110.

Abstract: A lightweight car-on-track system having a pair of spaced-apart rails and an associated rotatable drive tube with a captive carrier movable along the rails and having a drive wheel in driving engagement with the rotatable drive tube. The drive wheel is spring-loaded against the rotatable drive tube and the capture of the carrier to the rails results in a controlled drive force achieved regardless of the weight of the carrier or of a load supported thereon. The system is made up of a selected number of modular units, each having adjustably mounted frame members supporting opposite ends of a rail section and a drive tube section. Adjustable mounting of frame members to an alignment plate assures alignment between rail and drive tube sections when assembling the system. A transfer device is utilized for transferring a carrier from the end of one track section to the spaced-apart end of another track section with the transfer device being oscillatable about a pivot axis.

Abstract: A solenoid coil assembly for a solenoid valve includes an electrical coil wound about a valve armature to develop a magnetic field for actuating the armature responsive to an electrical current passing through the coil. A case surrounds the coil. The case has opposite end walls and a top wall, a bottom wall and opposite side walls connected between the end walls. A pair of electrical connectors are connected to opposite ends of the coil and extend outwardly from the top wall. A metal yoke has opposite end walls connected by a top wall and a bottom wall. The yoke is received on the case with their respective end walls, top walls and bottom walls in alignment.