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| Number | Title | Issue Date |
| 4909077 | Settable indexing device for aircraft angle of attack indicator meter An indicator meter which may comprise a galvonometer is mounted in a casing having an indexing pointer or "bug" mounted for movement thereon relative to the pointer of an aircraft angle of attack indicator. The settable indexing pointer and the bezel of t... | 03/20/1990 |
| 4909078 | Fluid flow detector A thermal effect sensing device comprises a semiconductor substrate supporting an insulating layer which has a thin film of platinum deposited on it. Holes are etched through the semiconductor substrate and the insulating layer. The platinum film is shape... | 03/20/1990 |
| 4909079 | Heat wire airflow meter A heat wire type airflow meter having a resistance element disposed within an airflow, the rate of which is measured, and a detection circuit for producing an airflow rate signal by detecting resistance change of the element depending on the airflow rate,... | 03/20/1990 |
| 4909080 | Ultrasonic level gauge An ultrasonic level gauge that measures the level of a test surface inside a tank. A guiding pipe guides the ultrasonic wave transmitted by an ultrasonic transceiver to the test surface, and guides the ultrasonic wave reflected by the test surface back to... | 03/20/1990 |
| 4909081 | Systems for detecting magnetic particles in fluids An apparatus for detecting the presence of magnetic particles in a fluid is described. The apparatus uses a magnet which is mounted so that its field is transverse to the fluid flow, so that the magnetic field imparts a transverse velocity to any magnetic... | 03/20/1990 |
| 4909082 | Acoustic transducer for acoustic microscopy A shear acoustic transducer-lens system in which a shear polarized piezoelectric material excites shear polarized waves at one end of a buffer rod having a lens at the other end which excites longitudinal waves in a coupling medium by mode conversion at s... | 03/20/1990 |
| 4909083 | Pressure/differential pressure measuring device A pressure/differential pressure measuring device having a range plate with static and differential pressure sensors mounted therein. A high pressure isolation plate is mounted on one side of the range plate with a high pressure diaphragm mounted on the s... | 03/20/1990 |
| 4909084 | Filament specimen fixture A single-filament specimen preparation fixture for preparing a multiplicity of tensile testing specimens from the same filament. The fixture can be used manually or it can be adapted for use as one element in an automatic testing system.... | 03/20/1990 |
| 4909085 | Mechanical property testing machine In accordance with the present invention an improved alignment assembly is provided wherein when a threaded fastener is the test specimen, the fastener is gripped by a collet made of two longitudinally split, threaded, and tapered pieces held together wit... | 03/20/1990 |
| 4909086 | Torque sensor of tension difference type for pulley-belt driving system A torque sensor for a pulley-belt driving system has a belt passed round a drive pulley and a driven pulley. The torque sensor has a frame having opposite ends respectively in contact with first and second parts of the belt, a beam secured to a stationary... | 03/20/1990 |
| 4909087 | Rotary type torque detecting device A rotary type torque detecting device characterized in that, in a casing, a motor holder supporting a motor is rotatably mounted and a torsion bar is connected at one end to the motor holder and at the other end to the casing. A torque detecting movable s... | 03/20/1990 |
| 4909088 | Apparatus for mounting a sensor An apparatus is provided for use with non-contacting torque sensors. The accuracy of non-contacting torque sensors depend upon the uniformity of the air gap between a stress detecting member and a stressed member, for instance, an inductive coil structure... | 03/20/1990 |
| 4909089 | Walk-in inspection apparatus for producing air samples Disclosed is a walk-in inspection apparatus for active production of air samples containing vapors of explosives, drugs, or other substances carried by a person. The apparatus includes a U-shaped booth with an open end through which a person walks past wa... | 03/20/1990 |
| 4909090 | Vapor sampling probe Disclosed is a portable, hand-held vapor sampling probe for collecting vapors of compounds such as cocaine, heroin, and explosives prior to their desorption and analysis in a vapor detector. Rechargable batteries power a lamp in the front face of the prob... | 03/20/1990 |
| 4909091 | Method and apparatus for the detection of corrosion or the like A method and an apparatus for the detection of corrosion, pitting or the like in pipelines is proposed and measured results produced in an appropriate manner are digitally converted, linked with measured values concerning the place and azimuth of the indi... | 03/20/1990 |
| 4909092 | Toroidal type infinitely variable transmission In a toroidal type infinitely variable transmission wherein power is transmitted between input and output discs by a transmission roller, the angle θ formed by the points of contact with the two discs with respect to the center of rotation of the transmi... | 03/20/1990 |
| 4909093 | Closure element translation mechanisms This invention relates to a friction drive mechanism for a motorized sliding door. The door is suspended by a first rail and its movement guided by a third rail. A second rail is flexibly coupled to the first and biased against a motorized driving roller ... | 03/20/1990 |
| 4909094 | Brake lever device for bicycles The invention relates to a brake lever device for use on the handlebar of a bicycle. With conventional brake lever devices, the center of rotation of the brake lever is a large distance away from the axis of the handlebar, radially outwardly of the bar, a... | 03/20/1990 |
| 4909095 | Telescopic helm A telescopic helm (10) having a steering drive shaft (12) and a steering wheel shaft (14) separated by a collet (32) to axially adjust the position of a steering wheel hub (18) of a vehicle. The steering wheel shaft (14) has an inner wedged surface (20) a... | 03/20/1990 |
| 4909096 | Automatic transmission shift control device An automatic transmission shift control device is provided with a control unit for automatically putting a selector lever in a locked condition when the selector lever is in its parking position and unless a brake pedal is fully depressed, and a manual ac... | 03/20/1990 |
| 4909097 | Steering wheel in particular for a motor vehicle The steering wheel is of the type comprising a rim (2), at least one connecting arm (3), an impact energy absorbing element (4) and a hub (5). The energy absorbing element is a tubular element (4) of a composite material interposed between the at least on... | 03/20/1990 |
| 4909098 | Harmonic drive apparatus A harmonic drive apparatus comprises a circular spline which has internal spline teeth and which is rotatable around a rotational axis, a flexible cylindrical flexspline which is concentrically disposed within the circular spline and which has external sp... | 03/20/1990 |
| 4909099 | Rotary/linear actuator A rotary/linear actuator of the type having power driven rotary balls adapted to impose a strain wave on a flexible sleeve for purposes of flexing screw threads carried by the sleeve radially into engagement with threads carried by an outer sleeve for pur... | 03/20/1990 |
| 4909100 | Differential gear device incorporating internal meshing type planetary reduction gear A differential gear device incorporating an internal meshing type planetary reduction gear has an externally toothed gear carried by a hollow input shaft through an eccentric member and an eccentric bearing, an internally toothed gear meshing with the ext... | 03/20/1990 |
| 4909101 | Continuously variable transmission A continuously variable transmission includes a power input driving a sun gear which in turn drives a plurality of planetary gears. Within each planetary gear is mounted an over-rolling clutch. The planet gear is free to rotate about its raceway in one di... | 03/20/1990 |
| 4909102 | Planetary gear system A planetary gear system comprises a plurality of external gears swingably rotated by at least three eccentric members juxtaposed axially with their phases offset from each other; an internal gear internally meshing with these external gears; and a flange ... | 03/20/1990 |
| 4909103 | System for controlling a continuously variable transmission having a torque converter A continuously variable belt drive transmission has a torque converter with a lockup clutch. Transmission ratio of the transmission starts to change in accordance with driving conditions of a vehicle, and the lockup clutch is engaged in accordance with dr... | 03/20/1990 |
| 4909104 | Crank-operated torque tool A crank operated torque tool has a tool holder shaft with an offset central portion and two straight, aligned, end members forming a crank. One end of the tool is preferably formed to receive and temporarily secure a torque tool. The other end has one end... | 03/20/1990 |
| 4909105 | Automated nut driving apparatus An automatic wheel attachment apparatus for attaching a wheel to a wheel attachment member of an automotive body. The automatic wheel attachment apparatus includes a reorienting device for reorienting a wheel attachment surface of the wheel attachment mem... | 03/20/1990 |
| 4909106 | Ratchet wrench A ratchet wrench including an elongated handle having one end provided with a retainer, and a socket member attached to the handle's one end by means of a loop of high strength, flexible material such as carbon fibers, metal wire or the like, the loop ext... | 03/20/1990 |
| 4909107 | Adjustable wrench An adjustable wrench has a wrench head with a cavity for receiving an object to be gripped and a moveable key that slides into the cavity to adjust its size. The key is advanced and retracted by an actuating mechanism including a threaded stem and a nut. ... | 03/20/1990 |
| 4909108 | Mechanical hand for processing edges of a curved plate and an apparatus for processing the edges of the curved plate A mechanical hand for processing edges of a curved plate is attached to the hand supporting member of a robot arm and in use is moved along the edges of the curved plate, which is made of glass, ceramics, metal or the like. The mechanical hand has a fixed... | 03/20/1990 |
| 4909109 | Shear assembly for shearing sheet metal A sheet metal shear assembly including a pair of shear elements supported at a fixed angle relative to one another to define a shear nip point. The shear elements are supported by jaw-like support members having outer ends which are spaced from one anothe... | 03/20/1990 |
| 4909110 | Tube clamping apparatus A tube cutting apparatus of the type in which jaws carried by relatively reciprocal slides move into and out of clamping engagement with tubing to facilitate severing of lengths of tubing as the tubing is moving rapidly along its lengthwise axis. Each of ... | 03/20/1990 |
| 4909111 | Saw table A saw table suitable for use with a portable circular saw comprises a bed, and upstanding therefrom adjacent the rear end a pair of walls meeting at an apex including an angle of 90° pointing towards the forward end, forming a miter fence. A pair of axia... | 03/20/1990 |
| 4909112 | Multiple head gang saw with simplified, accurate displacement transducer A multiple head gang saw has a plurality of moveable saw heads (12, 14) providing variable width cutting, and a single magnetostrictive displacement transducer (40) sensing displacement of all of the saw heads. The transducer sender unit (42) is mounted t... | 03/20/1990 |
| 4909113 | Device for clamping a circular saw blade A device for clamping a circular saw blade has a drive plate and a driven plate, a circular saw blade being clamped therebetween. The circular saw blade is clamped by means of clamping members, each being made in the form of a cam clamp. A handle of the c... | 03/20/1990 |
| 4909114 | Panel saw apparatus A panel saw apparatus for cutting a straight line in a planar surface such as a boiler tube panel includes a guide rail arranged to be secured to the panel surface in a predetermined position and a cutting assembly mounted on the rail for movement along t... | 03/20/1990 |
| 4909115 | Apparatus for loading a band saw blade A band saw blade is loaded between pairs of guide wheels upon tensioning the blade by guiding the blade between pairs of spaced guide plates which define converging slots that converge toward the guide wheels. The approach is particularly useful in loadin... | 03/20/1990 |
| 4909116 | Electronic musical instrument generating background musical tone An electronic musical instrument includes a keyboard, a first tone generator, a second tone generator, a hold switch, and a control unit. The keyboard designates a pitch of a musical tone to be generated. The first tone generator generates a first musical... | 03/20/1990 |
