摘要:
A wet friction member which can maintain boundary lubrication by decreasing the thickness of oil film on a friction surface even when the sliding velocity increases. In a case where the friction surface of the friction member is in pressure contact with a mated member while rotating in a state of boundary lubrications a shearing resistance owing to viscosity of cooling oil is circumferentially applied to cooling oil in outer grooves in the friction surface. Since outer grooves extend from starting position of intermediate portions of the friction surface and terminate at the outer peripheral edge in a volute shape toward the direction of rotation, cooling oil in the outer grooves flows along the groove walls and is quickly discharged from opening portions at the outer peripheral edge.
摘要:
The invention provides a coil winding apparatus which is simplified in structure, reduced in cost and improved in operation efficiency. The coil winding apparatus comprises a housing intermittently rotatable around a fixed axis between first and second positions, a plurality of spindles mounted for rotation on front and rear faces of the housing, a pair of drive sections including a bidirectional motor and provided independently of each other for transmitting rotation of the motor to rotate the spindles, an insulation sheet supply section opposed to the spindles on one of the faces of the housing when the housing is at any of the first and second positions for supplying films to bobbins mounted on the spindles, and a wire supply section for supplying wires to bobbins mounted on the other spindles. Since the drive sections are provided independently of each other for the different spindles, the directions and the speeds of rotation of the spindles can be set arbitrarily.
摘要:
A system for operating a two-cycle spark ignition engine, comprising an ultrasonic atomizer that is disposed in an intake pipe of the spark ignition engine. When the engine is to be started, a fuel for starting is supplied to the ultrasonic atomizer, and after the engine has been started, a gas oil is supplied to the ultrasonic atomizer to atomize and spray it into the intake pipe, thereby enabling an increase in the flow rate of fuel atomized and sprayed by the ultrasonic atomizer and realizing combustion of gas oil, and thus achieving a lowering in the fuel cost, ensuring safety and making it possible to provide a lightweight emergency pump unit which is suitable for use in vessels, for example.
摘要:
New type porous cordierite ceramics having a new characteristic interconnecting open cellular structure and a hollow microspherical cordierite glass powder with a shell devoid of any pores or provided with a few or an abundance of open pores which is used as a starting material for the porous cordierite ceramics. The porous cordierite ceramics are produced by subjecting a starting solution containing an alkyl silicate, an aluminum salt and an magnesium salt optionally with other compounds in an organic or aqueous organic solvent to spray thermal decomposition to prepare the hollow microspherical cordierite glass powder, and then processing the cordierite glass powder to a shaped body after or before an optional heat treatment and firing the shaped body at a temperature below the melting point of cordierite. The porous cordierite ceramics are useful as a carrier for gas chromatography or various chemical reactions.
摘要:
The present invention relates to a process for preparing a calcium-phosphorus-apatite, essentially characterized by admixing a single solvent of water or an organic solvent compatible with water or a mixed solvent of water with an organic solvent compatible with water with calcium and phosphorus compounds soluble in said single or mixed solvent to prepare a raw material solution, and atomizing the raw material solution into a flame or a heating zone for effecting a thermal decomposition reaction thereof to form a calcium-phosphorus-apatite; a calcium-phosphorus-apatite obtained by the process and having novel characteristics; and the use of the calcium-phosphorus-apatite as a chromatographic packing material.
摘要:
In a method of measuring the forming error of an object with a shape which is optically smooth and can be expressed mathematically, the reflected light from the object and the reflected light from a reference mirror are made to interfere to form an interference fringe, and the forming error is calculated from the potential distribution of the interference fringe. This calculation of the forming error is performed by calculating the phase distribution W(x,y) of a virtual object beam which is reflected from the measuring surface on the basis of the design values of the shape of the object to be measured when there is no forming error.
摘要:
An optical device includes: an optical device body; a first transparent electrode film deposited on a light incident side; a second transparent electrode film so formed that the first and second transparent electrode films face away from each other; and a first ferroelectric film deposited at least between the first and second transparent electrode films, wherein the first ferroelectric film vibrates in response to a drive voltage applied through the first and second transparent electrode films.
摘要:
A photoelectric conversion device includes: a porous electrode and a counter electrode provided on a substrate; an electrolyte layer provided between the porous electrode and the counter electrode; a collecting wiring line provided on a face of the substrate on which the porous electrode is provided; and a light guiding structure provided on the light incidence side of the substrate.
摘要:
An optical device includes: an optical device body; a first transparent electrode film deposited on a light incident side; a second transparent electrode film so formed that the first and second transparent electrode films face away from each other; and a first ferroelectric film deposited at least between the first and second transparent electrode films, wherein the first ferroelectric film vibrates in response to a drive voltage applied through the first and second transparent electrode films.
摘要:
To provide an ultrarapid hardening cement composition with high strength, the composition having: excellent fluidity; excellent usable time; and excellent initial strength under low temperature atmosphere as well as under general temperature atmosphere, and improving strength and durability of a hardening product of the composition. An ultrarapid cement hardening composition comprising: an ultrarapid hardening cement (A) comprising a calcium aluminate; and a cement dispersant (B), wherein the cement dispersant (B) comprises a copolymer having: a repeating unit derived from a monomer represented by the following formula (1): in the formula, R1 being the same or different and each representing a hydrogen atom or an alkyl group containing 1 to 18 carbon atoms; n representing an average molar number of addition and being a number of 10 to 300; and a repeating unit derived from a monomer represented by the following formula (2) in the formula, M representing a hydrogen atom, a monovalent metal atom, a divalent metal atom, an ammonium group, or an organic amine group.