Abstract: There is provided a headphone having a pair of units being attached to both ends of a band, and at least one of the units being made slidable relative to the band. The headphone comprises a slider that supports the unit, accommodates a part of a cord for connecting end parts of the band and the unit, and includes an engaged part for regulating a sliding range of the unit, a slider guide fixed to an end part of the band and inserted through the slider, for guiding a sliding motion of the slider in the sliding motion of the unit, and an engaging part having approximately the same width as that of the engaged part, attached to the end part of the band, and engaged with the engaged part so as to be locked to the end part of the engaged part in the sliding motion of the unit.

Abstract: There is provided a headphone having a pair of units being attached to both ends of a band, and at least one of the units being made slidable relative to the band. The headphone comprises a slider that supports the unit, accommodates a part of a code for connecting end parts of the band and the unit, and includes an engaged part for regulating a sliding range of the unit, a slider guide fixed to an end part of the band and inserted through the slider, for guiding a sliding motion of the slider in the sliding motion of the unit, and an engaging part having approximately the same width as that of the engaged part, attached to the end part of the band, and engaged with the engaged part so as to be locked to the end part of the engaged part in the sliding motion of the unit.

Abstract: In order to detect accurately a seating of clamped body and a clamping force at a seating, the workpiece supporting device has plural seating mechanisms 40. Each of the seating mechanisms 40 includes a load sensing element 45 receiving a clamping force or a fixing force. The load sensing element 45 consists of a material having a characteristic that said load sensing element is not substantially deformed by an applied load, especially it consists of a composite material dispersing a material having a pressure resistance effect or a magnetic resistance effect in a matrix of an electric insulation ceramics material. An abnormal clamping or fixing of the clamped body and an abnormal overload are detected by detecting an output from plural load sensing elements 45 supporting the clamped body.

Abstract: In order to detect accurately a seating of clamped body and a clamping force at a seating, the workpiece supporting device has plural seating mechanisms 40. Each of the seating mechanisms 40 includes a load sensing element 45 receiving a clamping force or a fixing force. The load sensing element 45 consists of a material having a characteristic that said load sensing element is not substantially deformed by an applied load, especially it consists of a composite material dispersing a material having a pressure resistance effect or a magnetic resistance effect in a matrix of an electric insulation ceramics material. An abnormal clamping or fixing of the clamped body and an abnormal overload are detected by detecting an output from plural load sensing elements 45 supporting the clamped body.

Abstract: In a machine tool having a worktable feed mechanism of the type that a worktable is moved in a horizontal direction relative to a tool spindle along a pair of guideways in parallel with the horizontal direction, there is provided a cutting chips collection space formed between the pair of guideways fixed to a base. A pair of ball screws are arranged outside of the cutting chips collection space for moving the worktable relative to the tool spindle in the horizontal direction. The cutting chips and coolant generated by contacting a tool with a workpiece drop into the cutting chips collection space directly without being heaped onto a cover mechanism of the worktable feed mechanism.

Abstract: A pallet exchange apparatus for a machine which includes a base, a pallet exchange arm rotatably mounted on the base, a turntable rotatably mounted on the base, an engaging mechanism provided on the turntable and a pallet guide mounted on the turntable. The pallet guide is shifted between a first position where a pallet supported thereon engages with an engaging portion of the pallet exchange arm and disengages from the engaging mechanism and a second position where the pallet engages with the engaging mechanism and disengages from the engaging portion of the exchange arm. The pallet exchange arm is rotated so as to exchange the pallets engaged with the engaging portion thereof between the turntable and a table of the machine.