Abstract: A muffler for internal combustion engines is formed of vertically separable body sections so that the sound absorbing and filter members may be accessed easily for replacement and/or cleaning.

Abstract: A cutting and machining fluid applicable to both cutting and electrical discharge machining. This cutting and machining fluid comprises a water-soluble organic compound that shows an electrical resistivity of not less than 10,000 .OMEGA..cm when it is contained in deionized water having an electrical resistivity of not less than 1,000,000 .OMEGA..cm, in a concentration of from 1 to 10 % by weight, a nonionic surface active agent, or a mixture of these. The organic compound is selected from the group of ethylene glycols, propylene glycols, glycol monoethers, and polyoxyethylene fatty acid esters.

Abstract: The invention provides N-acyl-N-phenyltetrahydrophthalamic acid derivatives represented by the general formula [I], methods of producing the same, and herbicides containing the same as the effective components, ##STR1## wherein X and Y each individually represent hydrogen atoms or halogen atoms, R.sup.1 represents a hydrogen atom, a halogen atom, a lower alkoxy group, a lower alkenyloxy group, a lower alkynyloxy group, a lower alkoxyalkoxy group or a lower alkoxycarbonylalkoxy group, R.sup.2 represents a lower alkyl group, a halogenated lower alkyl group, or a substituted or unsubstituted phenyl group, and R.sup.3 represents a lower alkoxy group, a lower alkenyloxy group, a lower alkynyloxy group, a lower alkoxyalkoxy group, a benzyloxy group or a lower alkoxycarbonylalkoxy group. The herbicides which are very useful can be widely applied to upland, paddy field, orchard, turf, forest, non-crop land, etc, and are not harmful to crops.

Abstract: A device for vibrating a workpiece to be processed, serves as a workpiece table to be used to processing the workpiece by means of a rotating tool having a grindstone. The device comprises a table for supporting the workpiece and a base to be detachably furnished to the table of a processing machine. The table is supported on the base via a plurality of piezoelectric actuators each of which is connected electrically to an external controller for vibrating the workpiece being processed by actuating selectively a driving voltage from the controller. The piezoelectric actuator is a laminated piezoelectric element, at least one end of which is secured to the base.

Abstract: A light beam scanner which is adapted to reflect optical beams by a rotary polygonal mirror provided adjacent a free end portion of a rotary shaft which is supported rotatably by a bearing, thereby performing scanning, the rotary polygonal mirror is covered with a protective cover, the protective cover being provided with a gas-inlet opening capable of introducing gas into the inside of the protective cover and a gas-outlet opening with the rotary shaft loosely-fitted therein, the gas-outlet opening permitting a discharge of gas from the inside of the protection cover. Accordingly, any deposition of oil mist which may leak from the bearing on the rotary polygonal mirror can be prevented by producing a gas-flow stream which travels from the gas-inlet opening to the gas-outlet opening.

Abstract: A machining tool is provided with an electric discharge truing/dressing apparatus comprising a spindle stock for containing and supporting a workpiece spindle which is driven for rotation while holding a workpiece or an electrode; a tool rest which moves parallel and perpendicular to the spindle of the spindle stock and holds an electrode machining tool and a grinding wheel; a feed electricity means disposed between a workpiece supporting portion of the spindle and the tool rest; a magazine disposed at an outside area of a machining area of the tool rest and adapted to store the workpiece and the electrode; and a loading device disposed between the magazine and the spindle. The grinding wheel on the tool rest is subjected to truing/dressing by feeding the electrode from the magazine to the spindle stock.

Abstract: A secondary air supply system for an internal combustion engine for suppressing combustion when a throttle valve is fully closed. A secondary air supply system is controlled with a microprocessor which controls other circuits such as the vehicle ignition circuit. Sensors provide outside air temperature data, internal pressure and engine rpm to the microprocessor. The microprocessor addresses the memory based on a computation including these sensed values. The memory in turn controls valves in a secondary air supply system.

Abstract: A mounting arrangement for diskette drives in a cabinet of electronic apparatus includes an assembly for accommodating two diskette drives or one diskette drive and a removable diskette storage unit mounted in the space reserved for the second diskette drive. The assembly is adapted for quick and easy mount/dismount in and from the cabinet and the removable storage unit provides a convenient storage space for a number of often used diskettes in a space which is typically wasted until installation of a second diskette drive unit is required.

Abstract: The inventive cement-based composition is useful as a coating material for corrosion-resistant protection on steel and iron surfaces. The composition is basically a polymer cement composition prepared by compounding a hydraulic cement with an aqueous emulsion of a polymeric constituent but characteritically the inventive composition is prepared by adding an aqueous emulsion of a hydrocarbon solvent such as kerosene containing a combination of surface active agents, i.e. oil-soluble non-ionic, water-soluble non-ionic and water-soluble cationic ones, and a saccharide compound such as glucose. By virtue of the unique formulation, the composition has a greatly extended pot-life suitable for coating works of, for example, steel rods and pipes by the dip coating method.

Abstract: Short, fine fibers having certain aspect ratios and generally triangular cross-section are mixed with particulate material whereby the fibers form a three dimensional network and the mixture is sintered to provide composites containing scattered and enveloped particulate material, which composites have utility as self-lubricating materials or grinding materials.

Abstract: As a grinder is being rotated, an outer circumference thereof and a metal block of raw material are pressed at determined speed or under determined pressure, and the grinder cuts the block on its surface so as to generate short metal fibers of not more than about 15 .mu.m calculated as diameter and not more than about 400 .mu.m in length by contacting between each of abrasive grains held in a matrix of the grinder and the surface of the raw material.

Abstract: Short metal fibers are directly produced from a work metal block. The product fibers are very thin and short, e.g., 200 .mu.m in diameter and 20 mm in length to the maximum. A bar like or pillar like metal bar is rotated, to which an elastic cutting tool is contacted. The entering width of cutting edge corresponds to length of fiber to be obtained. The tool is effected with fine feed and at the same time positively generated with self excited vibrations. The self excited vibration forcibly separates and divides a thin layer fiber accumulating at the cutting edge of the tool one by one without having connections in length of the fibers to each other. The process produces needle like fibers of microscopic cross sectional area. The thin and short metal fibers are produced in the same number as number of the self excited vibrations, and the fiber is right angled in axis with the cutting direction.

Abstract: A device for attraction holding a measurement object in an interferometer comprises a holding surface having holes and an air chamber communicating with the holes through suction passages formed between the holding surface and air chamber so as to attract and hold an object on the holding surface by exhausting the air from the air chamber. The air chamber is sealed by at least one flexible member which is deformed when an excessive negative pressure is established in the air chamber, so as to prevent distort or deformation of the holding surface, and hence the object held thereon.

Abstract: A jig apparatus for arraying and supporting work to be soldered wherein a plurality of lower supporting bars for supporting the lower side of a work are arranged so as to extend in a frame designed to be mounted on a conveyor holder of an automatic soldering line, upper supporting bars are arranged so as to extend above and in parallel with the lower supporting bars to press the work from the upper side thereof. The upper supporting bars have one end fitted to the frame. A gate member supports the other end of the upper supporting bars and movable up and down with respect to the frame. Work insertion openings are formed in the frame such as to oppose the gate member. The lower supporting bars are made of elongated channel members with a substantially U-shaped cross-section, each of the elongated channel members having holes formed in the floor thereof.

Abstract: A marker light comprising first and second reflectors each having a focus, a reflection surface of a quadric of rotation, an opening at the vertex end and a light projecting opening at the other end, the vertex ends of the reflectors facing each other and the focus of the first reflector being positioned closer to the light projecting opening of the first reflector than is the focus of the second reflector, a light source provided between the focuses of the first and second reflectors for emitting light, light from the light source being reflected from the first and second reflectors and supplied through the light projecting openings of the first and second reflectors, and a housing housing the first and second reflectors and the light source and having a first transparent section for passing light reflected from the first reflector and a second transparent section for passing light reflected from the second reflector, the first and second transparent sections being positioned to face the light projecting ope

Abstract: A process for producing photoconductive cadmium sulfide by introducing hydrogen sulfide into an aqueous solution containing cadmium ion comprizes, after completion of the first reaction of the cadmium ion with the hydrogen sulfide, repeating the reaction operation of adding further cadmium ion to the reaction mixture to cause the additional cadmium ion to react with the hydrogen sulfide.

Abstract: Automatic eject apparatus is provided for a self-contained record player, that is, a record player of the type having a housing, a carrier movable into and out of the housing, a turntable mounted on the carrier and a tone arm pivotably supported on the carrier and movable between raised and lowered positions. An energizable carrier drive bi-directionally drives the carrier into and out of the housing between withdrawn and retracted positions, respectively. Sensors sense when the carrier is in its withdrawn and retracted positions, and a tone arm position detector detects when the tone arm is in its raised and lowered positions, respectively. A tone arm drive is energizable to pivotally drive the tone arm to and from a reset position.

Abstract: A program selector for a record player of the type having a turntable supported on a movable carrier which is actuable to move the turntable into and out of a housing, and having a tone arm which is movable across the surface of a record and controllable to play back at least a selected one of plural programs recorded on the record in separate segments which are spaced apart from each other by respecting inter-program gaps. An inter-program gap detector detects the location of each inter-program gap on the record and produces an inter-program gap signal representing that location as the carrier moves the turn-table into the housing. A selector is provided for selecting a prgram to be played by selecting a particular inter-program gap signal which represents the location on the record of the desired program. A tone arm position detector detects the position of the tone arm as it moves across the surface of the record and produces a tone arm position signal representing the relative position of that tone arm.