Abstract:
Hydrophilic fine gel particles, said particles being crosslinked polymer particles comprising 20-94.8% by weight of a monoethylenically unsaturated amide monomer, 5-60.0% by weight of a crosslinkable ethylenically unsaturated monomer, 0.1-30% by weight of an ethylenically unsaturated carboxylic acid, 0.1-50% by weight of an ester monomer of an acrylic or methacrylic acid, and 0-30% by weight of a monomer copolymerizable with the above-mentioned monomers, said particles having a particle diameter in a water-swollen state of 0.1-10 .mu.m and a weight-average particle diameter/number-average particle diameter ratio of 1.2 or less; and a process for producing hydrophilic fine gel particles having a particle diameter in a water-swollen state of 0.1-10 .mu.m and a weight-average particle diameter/number-average particle diameter ratio of 1.2 or less, which comprises copolymerizing a monomer mixture of 20-94.8% by weight of a monoethylenically unsaturated amide monomer, 5-60.0% by weight of a crosslinkable ethylenically unsaturated monomer, 0.1-30% by weight of an ethylenically unsaturated carboxylic acid, 0.1-50% by weight of an ester monomer of an acrylic or methacrylic acid, and 0-30% by weight of a monomer copolymerizable with the above-mentioned monomers using a radical polymerization initiator in a solvent which dissolves these monomers but does not dissolve the resulting polymer.
Abstract:
An operational amplifier circuit comprises a differential amplifier circuit for generating an output voltage in response to the difference in potential between two input signals, a level shift circuit for shifting the output voltage of the differential amplifier circuit, a push-pull output circuit which operates in response to the output voltages of the differential amplifier circuit and the level shift circuit, and a bias circuit for generating a bias voltage in response to a power supply voltage to control the level shift circuit. The output voltage of the level shift circuit is not affected by fluctuations of the power supply voltage.
Abstract:
A coil assembly having a drum core for winding a coil wire. The drum core has a drum portion and a pair of end flanges provided at the opposite ends of the drum portion. The wire is wound on the drum portion. The drum core is encircled by a cylindrical ring core. The drum core and the ring core are supported by a base plate which has a recess for receiving end portions of the drum core and the ring core for appropriately locating the drum core and the ring core during assembling. The ring core is formed with cutouts leaving projecting edges at the end adjacent to the base plate. The base plate is provided with terminals at the edge portions adjacent to the cutouts of the ring core. End portions of the coil wire are passed through the cutouts and connected with the terminals.
Abstract:
A plurality of plate members are provided to be aligned with each other in order to define a plurality of coin paths in units of denominations which are aligned with each other and capable of communicating with a common path along which all inserted coins pass. Selectors are provided at a position immediately upstream from two successive aligned coin paths. Each selector is driven by a solenoid operative in accordance with a detection result from a coil for detecting denominations of coins. An inserted coin is directed to a corresponding coin path by the selector.
Abstract:
A bill validator including a vertically extending main body having a bill insertion slit, bill conveying passage, and a bill discrimination device provided along the bill conveying passage, and a bill accumulating box detachably mounted on the main body. The main body can be turned upside down, along with the bill insertion slit, bill conveying passage and bill discrimination device configured therein. The bill accumulating box is selectably mounted on the main body in a normal state or in an upside down state such that the vertical position of the bill accumulating box will not be changed when the main body is turned upside down. Thus, the same bill validator may be used as a type with the bill insertion slit provided at the upper portion or at the lower portion thereof, respectively, as desired for use with different vending machine configurations.
Abstract:
A coin separator includes first and second coin passages separated and defined in part by a plate having an elongated hole disposed lengthwise in the downward direction of coin movement. The diameter of the elongated hole is less than large diameter coins and greater than smaller diameter coins which are to be sorted. The plate is attachable to and detachable from the casing for cleaning and repair purposes, and a lower portion of the elongated hole has arcuate cutouts on both sides of a lower portion of the plate which projects upwardly in opposite relationship to downward coin movement. The peripheries of the arcuate cutouts and the upwardly projecting plate portion are tapered upwardly in cross-section which in conjunction with a tongue having a lower end movable into and out of the elongated hole assure that bent and/or deflected coins of small diameter pass through the appropriate coin passage.
Abstract:
A method for manufacturing a metal sintered body disclosed herein is characterized by the use of steps of: mixing 70 to 90 weight % of self-fluxing alloy powder and 10 to 30 weight % of metal powder of high melting point having a higher melting point than that of the self-soluble metal powder and in which the self-fluxing alloy powder is liable to be deposited thereon to obtain a metal powder having a sintering property; using a material in which 1 to 10 weight % of plastic binder is kneaded with the metal powder having a sintering property to obtain a molded body having a predetermined shape; and sintering the molded body at a temperature in excess of a liquid phase line of the self-fluxing alloy powder.
Abstract:
A coin discrimination member and a coin selection member are mounted on one of two plates defining a coin path. Counterfeit coins are removed from the coin path between the two plates at an upstream portion thereof in response to a discrimination signal from an electronic discrimination unit. Thereafter, the authentic coins are discriminated and sorted by the coin discrimination member and the coin selection member. One plate is detachably pivoted about the other plate.
Abstract:
A coin dispensing apparatus capable of selectively dispensing a coin of a predetermined denomination from among coins of various denominations stored in a coin tube assembly. The coin tube assembly is detachably mounted in a housing. At portion to the bottom of the tube assembly are provided both pay-out slide and coin base, whereby coins in the tube assembly are prevented from dropping out when the tube assembly is detached. Locking parts which are provided at the tube assembly and the housing are engaged with each other, in position. A coin level detector is disposed in the housing so that the detector can be set in position when the tube assembly is attached to the housing. The detector detects when the number of coins is reduced to a predetermined value.
Abstract:
A hot side seal in rubbing contact with a rotary regenerator matrix of a gas turbine engine consists of an annular portion formed from a carbon block and a diametral portion, the rubbing surface of which is made from a layer of a compound of nickel oxide and calcium fluoride.