摘要:
A moldable silicone rubber sponge composition comprising (A) 100 weight parts silicone rubber base compound with a Williams plasticity at 25° C. of 50 to 600 comprising (a) 100 weight parts diorganopolysiloxane gum that contains at least 2 alkenyl groups in each molecule and (b) 1 to 120 weight parts wet-process silica, (B) 0.01 to 50 weight parts hollow gas-containing thermoplastic resin powder, and (C) curing agent in an amount sufficient to effect curing of the composition. The invention is further a silicone rubber sponge afforded by the thermosetting of the above-defined moldable silicone rubber sponge composition and a method for producing the silicone rubber sponge.
摘要:
The clock reproducing device includes a control device which generates a control signal for decreasing a clock frequency difference between a transmitter and a receiver according to a clock information difference between the transmitting clock information and reproduced clock information and a receiving interval of the transmitting clock information, thereby the clock reproducing device controls a reproduced clock frequency of a reproduced clock output device. The clock reproducing device carries out appropriate frequency control regardless of the transmitting interval of the transmitting clock information received from the transmitter.
摘要:
The combination of an organic peroxide, a platinum-containing hydrosilation catalyst that is encapsulated within microparticles of a thermoplastic silicone resin, and acetylenic alcohol as the platinum catalyst inhibitor imparts a unique and desirable combination of properties to organosiloxane compositions curable by a platinum-catalyzed hydrosilylation reaction when the compositions contain a gum-type organopolysiloxane as the major ingredient. The compositions have long term storage stability and cure completely when molded. Cured articles molded from the compositions exhibit excellent mold release properties together with the absence of scorching, mold staining and surface tackiness.
摘要:
A smoke detector comprising a light emitting section from which pulse light is radiated to a detection area with a predetermined period and a light receiving section which is disposed so as to be opposite to the light emitting section to receive the light for detecting a change caused in the detection area in the form of a change in photo-output level. The light receiving section has a monitor terminal for outputting a monitor signal corresponding to the photo-output level. When a measuring apparatus is externally connected to the monitor terminal, the supervision period is shortened as compared with the normal supervision period, so as to enable the monitor signal to be supervised substantially in real time, thereby facilitating an adjusting operation.
摘要:
A photoelectric smoke sensor wherein a photo diode having a junction capacitance of 100 pH or less is employed and a resistor having a high resistance value of the order of mega-ohms is connected in series with the photo diode to obtain a photo output through the resistor, so that the voltage of the photo output may be sufficient to be directly subjected to comparison by the comparator without high-gain amplification even if the driving current for a light emitting diode is reduced. This enables omission of a high-gain amplifier and accordingly enables omission of a shield case for the circuits of the sensor which has been required to eliminate noises. Further this photoelectric smoke sensor is arranged so that the light emitting diode is driven intermittently, the photo output is compared with a reference voltage in synchronism with the driving of the light emitting diode, and the output from the comparator is data-read in by flip-flops at the timing of the decay of the photo pulse, to reduce the current consumption and simplify the circuit formation.
摘要:
A print head for a dot printer consisting of electromagnet units for driving a plurality of print wires, wherein the electromagnet unit is formed of a plurality of electromagnets and a plurality of armatures which are all assembled into a single magnetic circuit member; and the magnetic circuit member comprises a boss common to the electromagnets, yokes formed of radially arranged arms extending from the boss and parallel arranged arms extending in parallel from the outer ends of the radially arranged arms substantially at right angles thereto, magnetizing pole pieces extending from the intermediate portions of the radially arranged arms in parallel with the parallel arranged arms, and a yoke arm deformation-preventing ring connected to the outer ends of all the parallel arranged arms.
摘要:
What is disclosed is a silicone rubber shaft seal and a composition for its preparation which consists of filled, heat curable silicone rubber and acicular platy mineral powders.
摘要:
A self-extinguishing silicone elastomer containing a curable organopolysiloxane, silica filler, platinum, carbon black, TiO.sub.2 and a triazole compound is disclosed.