摘要:
A very safe and reliable turbo-molecular pump has been developed so that if an abnormal condition should develop on the rotor structure, it will not lead to damage to the stator or pump casing to cause a loss of vacuum in a vacuum processing system. The turbo-molecular pump has a pump casing housing a stator and a rotor therein, a vane pumping section and/or a groove pumping section formed by the stator and the rotor, and a constriction releasing structure for releasing the constriction of at least a part of the stator when an abnormal torque is applied to the stator by the rotor.
摘要:
A turbo-molecular pump of high safety and reliability was presented, so that if an abnormal condition should develop on the rotor side, it will not lead to any damage to the stationary portions such as the stator or pump casing to cause loss of vacuum in a vacuum processing system. The turbo-molecular pump includes a rotor; a stator assembly surrounding the rotor; and a casing portion surrounding the stator assembly, wherein at least a partial clearance is formed between the stator assembly and the casing portion, so that, when an abnormal torque is applied from the rotor to the stator assembly, direct impact transmission is prevented from the stator assembly to the casing portion.
摘要:
A turbo-molecular pump of high safety and reliability has been developed so that if an abnormal condition should develop on the rotor structure, it will not lead to damage to the stator or pump casing to cause loss of vacuum in a vacuum processing system. The turbo-molecular pump comprises a pump casing housing a stator and a rotor therein, a vane pumping section and/or a groove pumping section comprised by the stator and the rotor, and a constriction releasing structure for releasing constriction of at least a part of the stator when an abnormal torque is applied to the stator by the rotor.
摘要:
A turbo-molecular pump includes a casing having an intake port, a stator fixedly mounted in the casing, and a rotor supported in the casing for rotation relatively to the stator. The stator and the rotor make up a turbine blade pumping section and a groove pumping section for evacuating gas. A scattering prevention member is provided for preventing fragments of the rotor from being scattered through the intake port.
摘要:
A tire air pressure detecting device has a tire air pressure detecting device on a wheel. A main transmitting device is provided at the wheel for transmitting an air pressure signal SP to a vehicle body. A main receiving device is provided at the vehicle body for receiving the air pressure signal SP. A main switch turn-on detecting device is provided on the vehicle body for detecting the turn-on of a main switch. A second control device is provided on the vehicle body for receiving the air pressure signal SP and a main switch ON signal Son. An auxiliary transmitting device on the vehicle body transmits a transmission instruction signal SR to the wheel when the second control means receives the main switch ON signal Son. An auxiliary receiving device on the wheel receives the transmission instruction signal SR. A first control device is provided for reading a new air pressure signal SP. When the main switch is turned on, the state of the tire air pressure can immediately be recognized. The main transmitting means is not required to transmit the air pressure signal at all times or increase the frequency with which to transmit the air pressure signal. Thus, the consumption of the battery at the wheel can be reduced.
摘要:
A turbo-molecular pump has a casing, a stator fixedly mounted in the casing, and a rotor supported in the casing for rotation relatively to the stator. A turbine blade pumping assembly and a thread groove pumping assembly for discharging gas molecules are disposed between the stator and the rotor. The rotor comprises at least two components constituting the turbine blade pumping assembly and the thread groove pumping assembly. The components are separable from each other at a predetermined position, and joined to each other to form the rotor.
摘要:
HEN2, which is a combination of signals in which at least one of two adjacent digits at any digit position of one or more digits of a 2-based three digit redundant binary number with one signal of three digits {n, o, p} each expressing value {−1, 0, 1} as a one-digit signal is a signal “o” expressing zero, is handled as one set of notation, not as a subset of the three digit redundant binary number.
摘要:
A molded article having excellent optical characteristics and obtained by injection molding a resin composition of a bis(hydroxyphenyl)alkane polycarbonate resin having an average molecular weight of 12000 to 18000 and containing 0.005 to 0.5 wt %, based on the resin, of a phosphorous ester represented by the general formula, ##STR1## wherein R.sup.1 and R.sup.2 independently represent an alkyl or aryl group, and R.sup.3 represents hydrogen, an alkyl or aryl group, at a resin temperature of 330.degree. to 400.degree. C. and at a mold temperature of 50.degree. to 110.degree. C., and a method for producing such articles.
摘要:
A railcar includes: a power collector configured to collect electric power through overhead contact lines; a circuit breaking unit connected to the power collector and arranged on a roof of a car; and a plurality of electric power cables connected to the circuit breaking unit. The circuit breaking unit includes: a circuit breaker arranged above the roof and connected to a circuit connected to the power collector; and a branch joint which is integrally connected to a terminal portion of the circuit breaker and arranged under the circuit breaker and to which the plurality of electric power cables are connected.
摘要:
The present invention is a high voltage device system mounted on a railcar and includes a plurality of high voltage devices to which high-voltage electric power from an overhead contact line is supplied, a plurality of high-voltage cables configured to connect the high voltage devices with each other, and a joint device to which the high-voltage cables are connected. The high-voltage cables respectively include cable connector portions at tip end portions thereof, and each of the cable connector portions includes a base tubular portion configured to cover the high-voltage cable and a fit tubular portion extending from the base tubular portion in a direction substantially perpendicular to a longitudinal direction of the high-voltage cable. The joint device includes joint connector portions, each of which is fitted to the fit tubular portion of the cable connector portion to be connected to the high-voltage cable.