Abstract: An optical fiber bundle structure includes: plural optical fiber core wires; a crossing preventing member; and a grasping member. Further, the crossing preventing member has slits and the widths of the slits positioned at the respective sides are each equal to or larger than a difference between: a length of one side of a polygon circumscribing the plural optical fiber core wires at a hindmost end portion of the slits at the trailing end; and a length of one side of a polygon circumscribing the plural optical fiber core wires at the leading end.

Abstract: An optical fiber bundle structure includes: plural optical fiber core wires; a crossing preventing member; and a grasping member. Further, the crossing preventing member has slits and the widths of the slits positioned at the respective sides are each equal to or larger than a difference between: a length of one side of a polygon circumscribing the plural optical fiber core wires at a hindmost end portion of the slits at the trailing end; and a length of one side of a polygon circumscribing the plural optical fiber core wires at the leading end.

Abstract: A container closure integrally formed from a synthetic resin includes a body, which has an upper surface wall, and an outer lid connected to the body so as to be pivotable between a closed position at which the upper surface wall of the body is covered and an open position at which the upper surface wall of the body is opened, wherein a raised portion having discharge ports formed on both sides is disposed on the upper surface wall of the body, the discharge ports formed on both sides of the raised portion are opened when the outer lid is pivoted to the open position, while the discharge ports formed on both sides of the raised portion are sealed fully reliably when the outer lid is pivoted to the closed position.

Abstract: A container closure integrally formed from a synthetic resin includes a body, which has an upper surface wall, and an outer lid connected to the body so as to be pivotable between a closed position at which the upper surface wall of the body is covered and an open position at which the upper surface wall of the body is opened, wherein a raised portion having discharge ports formed on both sides is disposed on the upper surface wall of the body, the discharge ports formed on both sides of the raised portion are opened when the outer lid is pivoted to the open position, while the discharge ports formed on both sides of the raised portion are sealed fully reliably when the outer lid is pivoted to the closed position.

Abstract: A workpiece gear to be finished is held in mesh with a gear finishing tool with substantially no backlash therebetween. The gear finishing tool is then driven in mesh with the workpiece gear, and the workpiece gear is rotated in synchronism with the driven movement of the gear finishing tool. Simultaneously, the gear finishing tool and the workpiece gear are moved reciprocally with respect to each other in the direction of a tooth trace for finishing gear surfaces of the workpiece gear. With this gear finishing method, gears can be finished highly accurately with no profile error and at an increased rate. An apparatus for carrying out the gear finishing method is of a simple construction.