Abstract: In an apparatus for examining gaze shift in depth direction, light emitting diodes B and E, or D and C are lit at a plurality of positions with different distance in depth direction from the subject, and eye movement of the subject at that time is detected by an eye movement detecting portion. The signal of detection is processed in a signal processing circuit and is applied to a calculating portion. The calculating portion determines whether or not there is a disorder in gaze shift in depth direction of the subject by using any or all of latency in eye movement, time constant, amplitude, change in convergence angle, number of occurrence of saccade, and asymmetry of left and right eye movements, in response to the detected output of the eye movement.

Abstract: A critical parameter for a device is generated as follows. The critical parameter is modeled. When the device is operated under steady-state conditions, the modeled parameter is corrected by a measured parameter known to be accurate under steady state operating conditions. The correction accounts for errors which may be present in the synthesis of the critical parameter and normal anticipated performance variation of the device. When the device is operated under transient conditions, however, the correction of the modeled parameter is based upon previous steady-state conditions. Thus, the apparatus generates a theoretical parameter during transient operating conditions.

Abstract: In a method of testing a subject's perception of successively presented visual stimuli, a predetermined preliminary response time window is used at the beginning of the test to preliminarily classify the visual stimuli as "seen" or "not seen" depending on whether or not a response is received from the subject within the preliminary response time window. To permit reclassification of the visual stimuli at a later stage, the time of reception of every response, whether outside or within the preliminary response time windows, is stored. When an appropriate number of stimuli have been presented, a subject-adapted response time window is determined on the basis of the stored times of reception of the responses. This subject-adapted response time window is used for reclassifying the preliminarily classified stimuli.

Abstract: A drawer front attachment system for securing the drawer face panel to the drawer body in proper orientation. The attachment system includes a tightening fastener rotatably mounted in a perpendicular bore of the drawer body and a connector assembly secured to the drawer front and selectively engageable with the tightening fastener. The connector assembly has a base housing inserted into a blind bore on the rear of the drawer front and a fastener rod threadably connected to the box housing. The fastener rod includes a head which is lockingly received within the tightening fastener. As the tightening bolt is rotated the fastener rod is cammingly pulled firmly joining the drawer front to the drawer body. The base housing includes a positionally captured fastener nut which facilitates adjustment of the drawer front relative to the drawer body for proper orientation.

Abstract: A lens includes a central nose frame having a top wall and spaced first and second side walls directed to the top wall at predetermined obtuse included angles, with first and second cup-shaped lens frames mounted to opposed sides of the nose frame to receive removable lens members respectively therewithin. First and second eyeglass legs are hingedly mounted to the respective first and second lens frames and arranged for abutment, in a complementary manner, the first and second sides of the nose frame, to include a lock bar pivotally mounted to the nose frame to extend over the first and second nose frame sides, as well as first ends of the first and second lock legs to secure the lock legs and the associated lenses within the frame structure.

Abstract: A thrust reverser system for a turbine engine of the type having a central relatively hot gas generator nozzle conducting a core flow and a relatively cold duct conducting a fan flow and surrounding the hot flow, a pair of thrust reverser door, each of the doors being pivotally mounted on an axis which is substantially diametrically positioned with respect to the exhaust nozzle of the engine so as to pivot between a stowed position in which the doors are out of the direct path of exhaust from the engine and a deployed position in which the doors are in the path of the engine exhaust for deflecting the exhaust and creating a braking thrust, a flow modifying arrangement acting on the hot gas generator nozzle for simultaneously decreasing the total pressure of the core flow and increasing the total pressure of the fan flow by increasing the area of the hot gas generator nozzle at the discharge end thereof and moving the boundary between the hot gas and cold gas flows radially outwardly.

Abstract: A connecting arrangement for an automotive rear wheel steering unit is provided which is adapted for connecting an output shaft of a rear wheel steering gear train and a steering rod for steering rear wheels. The connecting arrangement includes a tapered portion formed on the output shaft, a tapered bore formed in the steering rod for receiving the tapered portion, and a fastener for locking the tapered portion of the output shaft to the tapered bore of the steering rod. With these arrangements, easy connecting operation is established with high mounting accuracy.

Abstract: A handrail assembly having seamless joints. The exposed components of the handrail are lengths of thick-walled plastic pipe and selected components have a metallic liner. The plastic pipes are joined to one another at any desired angle with the use of an alignment stud. The alignment stud has one end formed as a saddle at the desired angle to its axis and is attached to the one component by a threaded fastener passing through the stud. The hollow cylindrical saddle of the stud bears against the outside of the plastic pipe of the one component and is held in tight engagement against the pipe by the threaded fastener. The plastic pipe of the other component is likewise formed with a hollow cylindrical saddle adapted to mate with the outside surface of the first component and is telescopically engaged over the fastened stud and is anchored in place by a set screw passing through the plastic pipe into the stud. The head of the set screw is concealed by a plug.

Abstract: A goggles assembly comprising a pair of goggles having an outer lens, an inner lens attached to the goggles, and a pair of corrective lenses. The inner lens is held spaced from the outer lens by a pair of pegs which are inserted through both the outer and inner lenses. A groove is formed in an outer edge of each corrective lens and each corrective lens is press-fitted into an opening cut in the inner lens. The corrective lenses can be removed from the inner lens by pressing them out of the openings.

Abstract: A stereoscopic retinal camera comprises an illuminating optical system, a photographing optical system, an observation optical system and a focus detection optical system. The focusing optical system consists of an index projecting system combined with one of the two light paths of the observation optical system, and an index detecting system combined with the other light path of the observation optical system. The respective positions of the focusing lenses of the photographing optical system are adjusted so that a sharp image of the focusing index is detected by the index detecting system. Thus, the stereoscopic retinal camera can be easily focused without requiring any particular skill and is capable of enabling the minute observation of the fundus of the eye by means of a direct-vision viewfinder.

Abstract: Apparatus for an ion engine comprises a three-grid accelerator system with the decelerator grid biased negative of the beam plasma. This arrangement substantially reduces the charge-exchange ion current reaching the accelerator grid at high tank pressures, which minimizes erosion of the accelerator grid due to charge-exchange ion sputtering, known to be the major accelerator grid wear mechanism. An improved method for life testing ion engines is also provided using the disclosed apparatus. In addition, the invention can also be applied in materials processing.

Abstract: A fuel flow delivery system for a gas turbine engine of simple, economical structure including a non-positive displacement centrifugal fuel pump delivering constant pressure, variable flow rate fuel flow through a venturi passage. A conical needle valve is variably positioned within the throat section of the venturi to variably meter fuel flow rate.

Abstract: An improved flameholder for a thrust augmentation combustor includes a toroidal pilot gutter and inner and outer radial gutters, all having U-shaped cross-section and formed from a single piece of metal. The one-piece formation enables design improvements and variations which were not possible in the multiple piece construction of the prior art.

Abstract: A hybrid rocket motor having enhanced fuel combustion efficiency is disclosed which includes a plurality of axially aligned fuel grains having multiple axial perforations. The fuel grains are rotated or canted relative to adjacent fuel grains such that the multiple axial perforations are offset.

Abstract: A combined gas and steam turbine system includes a steam turbine having a water/steam loop and a high-pressure stage in the water/steam loop. The high-pressure stage has a preheater and a high-pressure heater connected downstream of the preheater. A gas turbine has an exhaust gas side. A steam generator is connected downstream of the exhaust gas side of the gas turbine. The steam generator includes a firing system producing flue gases flowing in a given direction, the preheater, the high-pressure heater, an intermediate superheater connected downstream of the high-pressure stage, and a medium-pressure heater connected parallel to the high-pressure stage. The medium-pressure heater is disposed in the steam generator between the high-pressure heater and the preheater, as seen in the given flow direction of the flue gases.

Abstract: Fuel injection nozzles used for reducing NOx in gas turbine engines has incorporated a variety of expensive and complicated techniques. For example, systems use schemes for introducing more air into the primary combustion zone, recirculating cooled exhaust products into the combustion zone and injecting water spray into the combustion zone. The present fuel injector (60,166) reduces the formation of carbon monoxide, unburned hydrocarbons and nitrogen oxides within the combustion zone by controlling the premix air/fuel ratio and more explicitly by controlling the air portion of the air/fuel ratio over the entire operating range of the engine (10).

Abstract: In eyeglasses comprising glass-holding means which comprise pairs of retaining pins, which extend in respective bores of the lenses and are carried by a lens-holding portion of the eyeglass frame, it is desired to provide lens-holding means which are simple in design. To that end each pair of the retaining pins are constituted by two legs of a U-shaped wire and are connected by a crosspiece, which is connected to the lens-holding portion of the eyeglass frame.

Abstract: A lightweight wind tube utilized for advertising, constructed of fabric with a constant diameter having annular sleeve at each end. The forward end sleeve being held in an open circle by flexible frame members with furled ends which are positioned in lateral openings in the forward end sleeve to provide attachment points for mounting yoke strings and access for disassembly. The wind tube further includes a rear sleeve formed in the exit end of the tube including a string for adjusting the choke in the exit end of the tube.

Abstract: A combustor liner segment includes a panel having four sidewalls forming a rectangular outer perimeter. A plurality of integral supporting lugs are disposed substantially perpendicularly to the panel and extend from respective ones of the four sidewalls. A plurality of integral bosses are disposed substantially perpendicularly to the panel and extend from respective ones of the four sidewalls, with the bosses being shorter than the lugs. In one embodiment, the lugs extend through supporting holes in an annular frame for mounting the liner segments thereto, with the bosses abutting the frame for maintaining a predetermined spacing therefrom.

Abstract: A gas turbine engine rotor support system includes outer and inner rotors having respective outer and inner blades interdigitated in respective blade row stages. A stationary rear frame includes a rear support shaft. A rotatable aft frame is disposed forwardly of the rear frame includes an aft support shaft. And, a rotatable forward frame is disposed forwardly of the aft frame and includes a forward support shaft. The forward and aft frames support the outer and inner rotors, and a first bearing is disposed between the aft shaft and the rear shaft for supporting the aft shaft; a second bearing is disposed between the forward shaft and the aft shaft for supporting the forward shaft; and a third bearing is disposed between a core shaft of a core turbine and the forward shaft for supporting the core shaft thereon.