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    • 46. 发明授权
    • Method of preparation of a patterned decorative material
    • 图案化装饰材料的制备方法
    • US5164219A
    • 1992-11-17
    • US721288
    • 1991-06-26
    • Kenzou MaedaHaruki Ito
    • Kenzou MaedaHaruki Ito
    • B29C43/02B29C59/04B44C1/24
    • B44C1/24B29C43/021B29C59/046
    • A patterned decorative material is prepared by a method which comprises applying a thermosetting powder coating material to a base plate; melting of the thermosetting powder coating material by heating; simultaneously embossing the coating layer and the base plate while the melted thermosetting powder coating material has a gel fraction formed by a hardening reaction of 0 to 75 weight percent; and further heating to form a hardened coating on the base plate. The patterned decorative material is excellent in appearance, corrosion resistance, weathering resistance and abrasion resistance and is free from the defects of conventional steel plates coated with polyvinyl chloride and the like, such as formation of craze and loss of luster.
    • 图案化装饰材料通过包括将热固性粉末涂料施加于基板的方法制备; 通过加热熔化热固性粉末涂料; 同时对涂层和基板进行压花,同时熔化的热固性粉末涂料具有通过0至75重量%的硬化反应形成的凝胶分数; 并进一步加热以在基板上形成硬化涂层。 图案化的装饰材料的外观,耐腐蚀性,耐候性和耐磨性优异,并且不存在涂覆有聚氯乙烯等的常规钢板的缺陷,例如形成热潮和失光。
    • 48. 发明授权
    • Delay circuit for use in electric blasting system
    • 延迟电路用于电喷射系统
    • US4984519A
    • 1991-01-15
    • US309157
    • 1989-02-13
    • Koji OchiMasahide HaradaKunio Kobayashi
    • Koji OchiMasahide HaradaKunio Kobayashi
    • F42B3/16F42B3/18F42C11/06F42D1/055F42D1/06H03K5/135
    • F42D1/055
    • A delay circuit for use in an electric blasting system including a capacitor for storing electric energy supplied from an electric blaster, an actuation circuit for detecting the stop of voltage supply from the blaster to generate an actuation signal, a circuit for generating clock pulses, a circuit for counting a predetermined number of clock pulses in response to the actuation signal to generate an igniting signal, and a switching circuit for responding to the igniting signal to discharge the electric energy stored in the capacitor through an igniting resistor, the actuation circuit having a zener diode with a threshold voltage. When the voltage supply from the blaster is stopped and the voltage across the zener diode becomes lower than the threshold voltage, the zener diode is cut-off to generate the actuation signal.
    • 一种用于电喷射系统的延迟电路,包括用于存储从电动发生器供应的电能的电容器,用于检测从起动器停止供电以产生致动信号的致动电路,用于产生时钟脉冲的电路, 电路,用于响应于所述致动信号计数预定数量的时钟脉冲以产生点火信号;以及开关电路,用于响应于所述点火信号,以通过点火电阻放电存储在所述电容器中的电能,所述致动电路具有 具有阈值电压的齐纳二极管。 当来自爆破器的电压停止并且齐纳二极管两端的电压变得低于阈值电压时,该齐纳二极管被切断以产生致动信号。