8932results about How to "Improve workability" patented technology

A drilling device prevents recurrence of an overload condition after occurrence of the overload condition, thereby improving operability and safety in the drilling device. A motor for rotating a drill is connected to an AC power source through a motor control unit, a current detector, and a power switch. A magnet is also connected to the AC power source through the power switch and a full-wave rectifier. The motor control unit rotationally drives the motor on the basis of a signal sent from a main control unit according to a state in which a motor start switch is on. The main control unit controls the motor control unit to gradually reduce a supply voltage to the motor when the motor becomes overloaded, to gradually increase the voltage to the normal power supply condition when the overload condition is vanished, and to stop power supply to the motor if the overload condition continues for a predetermined period.

A plasma dicing apparatus in which a semiconductor wafer with a protective sheet stuck thereonto covering the entire circuit-forming surface and with an etching-resistant mask member stuck on the back surface opposite to the circuit-forming surface is mounted on a mounting stage; plasma etching is performed using the mask member as a mask; and the semiconductor wafer is diced into plural semiconductor chips. The plasma dicing apparatus includes a ring-shaped frame member retaining the outer circumference of the mask member extending off the outer circumference of the semiconductor wafer. The mounting stage is composed of a wafer supporting part supporting a semiconductor wafer and a frame member supporting part supporting the frame member. This facilitates carrying a semiconductor wafer into and out of the vacuum chamber.

This invention provides a novel compound which can be properly used as a surfactant, a method of producing a fluoropolymer, surfactant and a fluoropolymer aqueous dispersions using the novel compound. This invention is a fluoroalkylcarboxylic acid derivative which is represented by the general formula (i): Rf1(OCH2CF2CF2)n1OCX1X2CF2(Rf2)n2COOM   (i) wherein Rf1 represents a straight or branched fluoroalkyl group containing 1 to 20 carbon atoms, which fluoroalkyl group may optionally contain 1 to 5 oxygen atoms in the principal chain thereof, Rf2 represents a straight or branched fluoroalkylene group containing 1 to 25 carbon atoms, said fluoroalkylene group may optionally contain 1 to 5 oxygen atoms in the principal chain thereof, n1 represents an integer of 0 to 3, n2 represents an integer of 0 or 1, X1 and X2 are the same or different and each represents hydrogen atom or fluorine atom, and M represents NH4 or a monovalent metal element.

A light-emitting device is provided that can extract light in all directions and that has wide directivity. This light-emitting device includes: an elongated bar-shaped package extending sideways, the package being formed such that a plurality of leads are formed integrally with a first resin with part of the leads exposed; a light-emitting element that is fixed onto at least one of the leads and that is electrically connected to at least one of the leads; and a second resin sealing the light-emitting element. In the light-emitting device, the first resin and the second resin are formed of optically transparent resin, and the leads have outer lead portions used for external connection and protruding sideways from both left and right ends of the package.

In the present invention, an identification code representing that a playing card constitutes a prescribed group is given to the playing card in order to discover an abnormal playing card mingled in with genuine playing cards for illicit purposes. The identification code is read from each of a plurality of playing cards constituting the prescribed group so as to determine whether the playing card is a genuine playing card or an abnormal playing card. The identification code may be provided on the playing card in a condition invisible to the human eye under normal usage conditions.

A switchable well cementation sliding sleeve based on fracturing of separate layers comprises an outer barrel, an upper joint and a lower joint are installed at the upper end and the lower end of the barrel respectively, a fracturing port is formed in the side wall of the upper portion of the outer barrel, and an upper center pipe, an upper connection sleeve, a lower center pipe and a lower connection sleeve are installed inside the outer barrel. The switchable well cementation sliding sleeve based on fracturing of the separate layers is not provided with a ball seat, so a full bore of the inner wall can be maintained, fracturing fluid can flow back in time, and the construction period is shortened. The well cementation sliding sleeve is set in the upper center pipe through a bottom packer, downward pushing force big enough can be generated in the process of annular or continuous tubing pressing, so the upper center pipe can overcome shearing force of corresponding shearing dowels and move downwards, and therefore the fracturing port of the well cementation sliding sleeve can be opened.

A battery pack comprising a battery cell having electrode terminals formed on an upper surface of the battery cell, and a protective circuit module (PCM) block mounted on the battery cell, wherein one or more connecting holes for electrical connection between the battery cell and the PCM block are perforated through the PCM block such that a connecting portion between the battery cell and the PCM block is exposed to the outside of the upper surface of the battery cell. The battery pack is lighter, compacter and miniaturized, thereby allowing an electronic device employing the battery pack to be reduced in an overall size, enhancing workability through a simplified assembling process, reducing manufacturing costs through reduction of the number of components, and enhancing productivity through reduction of the number of operating steps by eliminating additional installation steps.

The present invention provides a virucide composition and / or sporicide composition having a high virucidal effect and sporicidal effect and being excellent in safety and workability. That is, the present invention provides a virucide composition and / or sporicide composition comprising (a) an inorganic peroxide, (b) tetraacetylethylenediamine and (c) at least one selected from a salt of an alkaline metal salt with an inorganic acid and a salt of an alkaline earth metal with an inorganic acid in a specific ratio.

A synthetic basic well-drilling liquid is proportionally prepared from the basic liquid composed of basic liquid and aqueous solution of CaCl2, primary emulsifier, secondary emulsifier, wetting agent, flowing regulator, filter loss reducer and organic earth through mixing. Its advantages are no pollution and high effect to protect oil-bearing stratum.

The invention discloses battery heat management equipment with an efficient balanced radiating function and an electric heating function. The battery heat management equipment comprises a radiating cooling device, an electric heating device and a temperature acquisition device, wherein a battery radiating device comprises a plurality of battery monomers, battery connecting pole pieces, insulating high heat conduction battery protection shells, a composite phase change material, a framework structure material for improving heat transfer and strength, heat pipes, a battery module box and heat pipe radiating fins; a battery electric heating device comprises the electric heating device and an electric heating controller; the electric heating device is embedded into the phase change material and connected with the electric heating controller; the temperature acquisition device comprises a thermocouple and a temperature acquirer; the thermocouple is arranged in a composite phase change material cooling module and transfers a sensed signal to the temperature acquirer; the temperature acquirer transfers the signal to a battery heat management equipment master controller; and the battery heat management equipment master controller is connected with the electric heating controller. According to the battery heat management equipment, a power battery is high in working performance, high in safety and long in cycle life.

A cable clamp which is capable of preventing even a very fine cable to be treated from coming off or extending off therefrom, without any fear of the cable being damaged or broken, and is easy to carry out a clamping treatment and an extra length-bunching treatment on cables, with enhanced workability. The cable clamp includes a pair of cable-holding bodies each including a pillar portion vertically extending from the base, and a cantilever portion extending from an end of the pillar portion, remote from the base, in a direction substantially at right angles to the pillar portion. The pair of cable-holding bodies are configured such that the pillar portions are arranged to extend in opposite directions, with one of respective side surfaces of the respective cantilever portions being opposed to the other with a predetermined space therebetween.

A fastener for connecting plate members includes a male member, and a female member to be inserted into mounting holes of the plate members. The female member includes a cylinder body for receiving the main body therein, a projecting portion formed on an outer periphery of the cylinder body at one end thereof, and protruding portions formed at the other end thereof. A first engaging portion is formed on an outer surface of a main body of the male member or an inner surface of the cylinder body, and a second engaging portion engaging the first engaging portion is formed on the inner surface or the outer surface. The second engaging portion has two engaging sections and a smooth surface portion interposed therebetween. When the male member is inserted into the female member, the male member can be easily engaged with the female member.