An acoustic method and apparatus for investigating an earth formation penetrated by a borehole are described. Acoustic transducers are mounted on a tool to accurately determine the distance between a segment of the tool and the wall of the borehole. The acoustic transducers are positioned in such manner that the stand-off distance between individual resistivity measuring electrodes in an array, wh...

PURPOSE:To utilize an engine brake effectively and give full play to the function of an antiskid device by cutting off and holding the clutch during the operation of a braking device at a prescribed speed or below and during an antiskid action and by performing connecting operation gradually at the time of connection. CONSTITUTION:A solenoid coil 12 operates based on the logical multiplication of ...

PURPOSE:To prevent the rotational speed of an engine from blowing up during rest of a vehicle, by providing a control means for controlling the engine so that the engine rotational speed gradually and compulsorily increases when a select lever is changed over to a travel range position from a nontravel range where the engine rotational speed is controlled so as to be set below a predetermined low ...

PURPOSE:To make it possible to smoothly return a throttle valve into an inherent throttle control condition after avoidance of a risk of slip, by providing a desired throttle opening degree returning means for gradually changing the output value of a desired throttle opening degree compensating means after determination of occurrence of a slip, to a value before compensation during a time lapse. C...

PURPOSE:To prevent a starting shock by lowering the engine speed by a designated amount in case of the brake non-operating state when an automatic transmission is switched from N-position to a running position during idling state of an engine. CONSTITUTION:In a vehicle having an automatic transmission 15 driving-coupled to an engine 1, in which the engine speed at the time of idling is changed acc...

22 A magnetic core containing amorphous metal, suitable for use with electrical inductive apparatus, such as transformers, and methods of constructing such a magnetic core. The desired physical dimensions of the magnetic core are maintained, without adversely stressing the core, by a composite, conformal coating applied to the core edges. The composite coating includes a rigid high strength outer ...

A fitted sheet comprising top, side and end panels for covering the top, sides and ends of a mattress with adjacent ends of the side and end panels connected together to form vertical corners and with the lower portions of the side and end panels extending into underlying relation with the underside of the mattress. Elastic corner bands are attached to each side panel at a location spaced from one...

In a process for producing polyurethane foam by allowing a reaction mixture comprising at least one polyisocyanate component and at least one polyfunctional active hydrogen component to react, a compound selected from the group consisting of oxynitrate salts of metals of Group IV B of the Mendeleef periodic table, is employed as a cell opening additive. Such oxynitrate salts are also effective to ...

Polyethylene terephthalate scrap material containing on its surface a chlorine-containing polymer such as, for example, polyvinylidene chloride or polyvinyl chloride, can be recovered and reused by melt-blending it with a polymer from a defined class of ethylene copolymers containing an epoxy group, and melt processing the blend in the same manner as virgin polyethylene terephthalate. The recovere...

The method of the present invention corrects the nonuniformity in the printing density between the printing elements (Hl . . . Hi) of a thermal print head (62) by first printing across a transparent receiver (64) with each element of the head activated with equal inputs (flat field). The print transmittance values are read from the transparent receiver (64) using, for example, a microdensitometer ...

The present invention provides a method for correcting the density nonuniformities that occur down the page of a thermally printed document (58) by providing a correction component, representing heating pulses (ÑiL), to each thermal printing element (H1 . . . Hi) as a function of the line (L) on which the thermal printer (50) is printing. The correction component is determined from the product of ...

A system includes an interface through which actual train operating data can be transferred from a recording medium, such as a magnetic tape, into a train simulator. The date contents of the magnetic tape are generated from real-time data obtained on-board an operating locomotive. For entering additional data, the interface switches a manual data entry terminal to the train simulator in response t...

PURPOSE:To heat a powdered coal rapidly to thereby improve the production efficiency, etc., when coal tar is produced through thermal decomposition of a fluidized powdered coal in a reactor, by heating the decomposition gas and blowing the heated gas against the fluidized powdered coal in the reactor, thus accomplishing the reuse of the gas by circulation. CONSTITUTION:Raw coal 1 finely ground in ...

PURPOSE:To use a PIN diode both for signal attenuation and switching, and to reduce the number of parts, and to make package area smaller by connecting the PIN diodes respectively to the input side and the output side of a band pass filter, and operating them by an AGC output and an external band change- over switch. CONSTITUTION:The PIN diodes D11, D21 for the signal attenuation are connected to ...

PURPOSE:To obtain a band switching circuit with a few number of parts by making the PIN diode of an input attenuating part and the PIN diode of a band switching part common, and letting the PIN diode have the functions of both of them, and at the same time, adding the PIN diode for matching correction. CONSTITUTION:The PIN diodes D11, D12, D21, D22 for signal attenuation are connected respectively...

A monoclonal antibody which binds preferentially to a subset of the human CD8 lymphocyte population whereby to positively and precisely distinguish between cytotoxic effector and supressor effector cells in the CD8 cell population. The monoclonal antibody recognizes a novel epitope of LFA-1 antigen by means of which it can bind CD8 cells which express the eptope on a surface antigen thereof. The C...

An improvement is provided in a differential gear which includes an input shaft, a differential casing adapted to be rotated by the input shaft, a differential pinion shaft radially extending within the differential casing and a plurality of differential pinion gears rotatably mounted on the differential pinion shaft. A pair of side gears having a rotation axis common to that of the differential c...