Abstract: A receptacle includes a hollow cylinder and a flange. A plug includes a barrel having a cylindrical body, a semicylindrical section extending from the body, and an engaging section provided at an end of the semicylindrical section and a coupling nut. A boom-like retaining piece is cut out and formed in the semicylindrical section and a retaining hook is formed at an idle end of the retaining piece located in the engaging section. The coupling nut is screwed onto threads of the hollow cylinder so that the plug is connected to the receptacle. Before the connection, the engaging section is engaged with and inserted into the hollow cylinder and the retaining piece is caught in the receptacle, so that the plug is temporarily retained to the receptacle securely.

Abstract: There is provided a power supply apparatus which is easy in attempting to unify the thickness distribution of a thin film to be formed on the surface of a substrate even at the time of charging pulsed potential at a low frequency to targets that make respective pairs. The power supply apparatus of this invention has: a first discharge circuit which alternately charges predetermined potential to a pair of targets that are in contact with a plasma at a predetermined frequency; and a second discharge circuit which charges predetermined potential between the ground and the target, out of the pair of targets, that is not receiving output from the first discharge circuit.

Abstract: Connector includes a plug and receptacle. The receptacle includes a cylindrical part and a flange. The plug includes a cylindrical barrel, which houses internal connectors, and a coupling nut. At an end of the barrel, an engaging piece and a pair of locking pieces, which face each other, project in an axial direction of the barrel. Locking hooks are formed at the tips of the locking pieces. The coupling nut is screwed onto the cylindrical part to connect the plug to the receptacle. Before the connection, the engaging piece and the locking pieces are inserted into and engaged with the cylindrical part and positioned. At the same time, the locking pieces are caught in the receptacle to temporarily secure the plug to the receptacle.

Abstract: An optical connector is selectively attachable to one of optical fiber cables including a first type optical fiber cable and a second type optical fiber cable. Each of the optical fiber cables includes a common optical fiber and a common ferrule fixed to the common optical fiber. The first type optical fiber cable further includes a tension member. The second type optical fiber cable further including a tensile member. The optical connector has a swage portion through which the common ferrule is inserted forward when one of the optical fiber cables is attached to the optical connector. The swage portion has an outer surface on which the tensile member is swaged when the second type optical fiber cable is attached to the optical connector. The optical connector also has a fixing portion having at least one receiver hole formed therein for receiving and fixing an end of the tension member of the first type optical fiber cable. The fixing portion is located forward of the swage portion.

Abstract: An optical connector in which a seal member is difficult to be damaged during assembly. A seal member-accommodating portion that accommodates the seal member in a compressed state is formed as an intermediate portion of a through hole of a housing. When an insertion member is inserted into the through hole, an insertion portion of the insertion member presses the seal member into the seal member-accommodating portion.

Abstract: An optical connector device has a first connector including a ferrule for holding an optical fiber and a guide portion projecting longer than the ferrule. The optical connector device also has a second connector for receiving an end of the ferrule along an optical axis of the optical fiber. The second connector includes a receiver for receiving the guide portion and a shutter having a cover part. The shutter is movable between a cover position at which the optical axis intersects the cover part and an open position at which the optical axis does not intersect the cover part. The guide portion is operable to move the shutter from the cover position to the open position when the guide portion is received into the receiver.

Abstract: There is provided a power supply apparatus which is easy in attempting to unify the thickness distribution of a thin film to be formed on the surface of a substrate even at the time of charging pulsed potential at a low frequency to targets that make respective pairs. The power supply apparatus of this invention has: a first discharge circuit which alternately charges predetermined potential to a pair of targets that are in contact with a plasma at a predetermined frequency; and a second discharge circuit which charges predetermined potential between the ground and the target, out of the pair of targets, that is not receiving output from the first discharge circuit.

Abstract: An optical connector is selectively attachable to one of optical fiber cables including a first type optical fiber cable and a second type optical fiber cable. Each of the optical fiber cables includes a common optical fiber and a common ferrule fixed to the common optical fiber. The first type optical fiber cable further includes a tension member. The second type optical fiber cable further including a tensile member. The optical connector has a swage portion through which the common ferrule is inserted forward when one of the optical fiber cables is attached to the optical connector. The swage portion has an outer surface on which the tensile member is swaged when the second type optical fiber cable is attached to the optical connector. The optical connector also has a fixing portion having at least one receiver hole formed therein for receiving and fixing an end of the tension member of the first type optical fiber cable. The fixing portion is located forward of the swage portion.

Abstract: An optical connector device has a first connector including a ferrule for holding an optical fiber and a guide portion projecting longer than the ferrule. The optical connector device also has a second connector for receiving an end of the ferrule along an optical axis of the optical fiber. The second connector includes a receiver for receiving the guide portion and a shutter having a cover part. The shutter is movable between a cover position at which the optical axis intersects the cover part and an open position at which the optical axis does not intersect the cover part. The guide portion is operable to move the shutter from the cover position to the open position when the guide portion is received into the receiver.

Abstract: An optical connector in which a seal member is difficult to be damaged during assembly. A seal member-accommodating portion that accommodates the seal member in a compressed state is formed as an intermediate portion of a through hole of a housing. When an insertion member is inserted into the through hole, an insertion portion of the insertion member presses the seal member into the seal member-accommodating portion.