摘要:
A bolt provided with a pilot of the present invention is formed with a pilot portion, on the front end side of a shank portion, having an axis aligning with an axis of the shank portion. The pilot portion is formed with a guide thread portion continuous to the normal thread portion to about half portion of the pilot portion. The connecting portion between the normal thread portion and the guide thread portion has a connection thread portion having an outer diameter gradually reducing from the normal thread portion toward the front end portion of the pilot portion. According to such structure, workability can be improved.
摘要:
A communication system include: a first acquisition unit configured to acquire request information of session initiation and authentication information of session participation; a session management unit configured to establish the session between the first terminal and the second terminal; a second acquisition unit configured to acquire request information of session participation and the authentication information of session participation being input by a third terminal; and a participation determination unit configured to compare the authentication information of session participation obtained by the first acquisition unit with the authentication information of session participation obtained by the second acquisition unit, and the participation determination unit allowing the third terminal to participate in the session when the authentication information of session participation obtained by the first acquisition unit is identical to the authentication information of session participation obtained by the second acquisition unit.
摘要:
A communication management system includes a first terminal and a second terminal. The first terminal and the second terminal are each configured to transmit and receive content data including at least video and audio data captured at a location of each of the first terminal and the second terminal. The first terminal is designated as a content delivery source and content data captured at the location of the first terminal is transmitted to the second terminal. The second terminal is restricted from transmitting content data captured at the location of the second terminal.
摘要:
A DC power supply system includes a DC power supply and a secondary battery for backing up the DC power supply. When a voltage of the DC power supply is lower than a voltage of the secondary battery, the DC power system adds an extra voltage to the voltage of the DC power supply to provide an input voltage to the secondary battery higher than the voltage of the secondary battery by using an electric power of the secondary battery, and the secondary battery is charged.
摘要:
A diagnostic device for drive circuits has first and second relays each with a movable contact for switching between a normally closed and open contact, a motor are connected to the contacts, first and second resistance voltage dividing circuits connected between the contacts and a reference potential point, a switching circuit connected between two the closed contacts and the reference potential point, and a diagnostic section. The diagnostic section diagnoses a state of supply of drive power to the motor based on voltage-division outputs of the first and second resistance voltage dividing circuits. A bias voltage is supplied to a connection point between the normally closed contacts and the switching circuit. An additional resistance voltage dividing circuit is connected between the connection point and the reference potential pointy. The connection between the motor and a circuit driving the motor based on a voltage-division output of the additional voltage dividing circuit.
摘要:
A fan comprises a fan body and a handle secured to the fan body. The fan body is made of a transparent sheet. An LED is provided in the handle for illuminating the fan body. Batteries are mounted in the handle for operating the LED.
摘要:
A switch open-close state-detecting circuit for supplying an interrupt signal to a control terminal of a controller in response to a change of state of a switch to either open or closed state by giving a monitoring voltage to a plurality of switches to supply a change of the monitoring voltage corresponding to opening or closing of the switches to a plurality of input terminals of the controller by detecting the change of the monitoring voltage to supply to the control terminal of the controller for controlling the operation modes of the controller. The switch open-close state-detecting circuit has a control IC including the same number of a plurality of pairs of input terminal and a plurality of output terminals for generating interrupt signals at the output terminals only when supply voltages to pairs of input terminals of the control IC are not equal, and delay circuits connected between the input terminals of the control IC. The change of the monitoring voltage is supplied to the pairs of input terminals of the control IC to supply the interrupt signal from the output terminals of the control IC to the control terminal of the controller.
摘要:
Friction plates for a friction type coupling device for displaying a function of braking, holding, accelerating or decelerating by depressing and contacting one friction member against the other friction member of a friction type coupling device composed of two friction plates one fabricated of metals or non-metallic materials or inorganic material. One friction plate has a friction portion which is selectively depressed against the other friction plate and a remaining non-contacting portion. The friction portion is formed as a plurality of protrusions by cutting away, by engraving a plurality of grooves, by cutting away non-contacting portions or by positively forming a plurality of protrusions on the surface of the friction plate. The area ratio of the friction potion to the whole area of the friction plate, namely the total of the contacting portion plus non-contacting portion is rendered less than 60%, preferably, less than 10%, whereby the variation of the generated friction force is made minimum and is able to keep stable friction performance.
摘要:
A power distribution system includes a DC-DC converter which outputs a DC power after converting the DC power outputted from a DC power source to a desired voltage level. In the power distribution system, the DC-DC converter is controlled so as to operate only when the input voltage falls in a predetermined range.
摘要:
A DC/DC converter has DC input terminals to which a DC power is inputted, a transformer, and a bidirectional switching device on the primary side of the transformer.