Abstract: In an operation control method capable of securely reducing required motor capacity and power consumption, a threshold based on load size is preset, and after a driven or rotated state of each of two rotating shafts becomes steady, and if the load size is smaller than the threshold, conveyance of a rotating drive to one of the two rotating shafts is stopped and the one of the two rotating shafts with the conveyance of the rotating drive stopped is interlocked and rotated together with the other of the two rotating shafts by vibration generated by a rotating drive of the other of the two rotating shafts, and if the load size becomes larger than the threshold, the conveyance of the rotating drive to the one of the two rotating shafts with the conveyance of the rotating drive stopped is started so as to drive or rotate the two rotating shafts.

Abstract: In a vibratory sieving machine having two rotary shafts provided with eccentric spindles disposed parallel to each other, motors are disposed so as to reduce the capacity or power consumption of the motors required in the vibratory sieving machine, and to drive the two rotary shafts independently, and a rotary drive control mechanism is configured such that either one of the two rotary shafts can be started upon a start, while the other of the two rotary shafts can be started after a rotary drive state of the one of the two rotary shafts is transferred to a stationary state.

Abstract: To provide an operation control method capable of securely reducing the required motor capacity and power consumption, a threshold based on the load size is preset, and after the driven/rotated state of two rotating shafts becomes steady, and if the load size is smaller than the threshold, the conveyance of rotating drive to one of the two rotating shafts is stopped and the rotating shaft with the conveyance of rotating drive stopped is rotated together interlocked with the other rotating shaft by vibration generated by the rotating drive of the other rotating shaft, and if the load size becomes larger than the threshold, the conveyance of rotating drive to the rotating shaft with the conveyance of rotating drive stopped is started so as to drive/rotate the two rotating shafts.

Abstract: In a vibration generating machine having two rotary shafts provided with eccentric spindles disposed parallel to each other, motors Ma, Mb are disposed so as to reduce the capacity or power consumption of the motors required in a vibration generating machine having two rotary shafts provided with eccentric spindles disposed parallel to each other, and to drive the two rotary shafts 31a, 31b independently, and a rotary drive control mechanism is constituted so that either one of the two rotary shafts 31a, 31b may be started upon start, while the other rotary shaft may started after the rotary drive state of this rotary shaft is transferred to a stationary state.

Abstract: A wiping sheet is provided, which presents excellent in handling during wiping, high wiping ability for greasy dirt, and less liquid remains on an object after wiping. A wiping sheet having a fiber structure (such as a woven fabric, a knitted fabric and a nonwoven) is obtained, which includes an ultrafine fiber layer containing ultrafine fibers having a fineness of at most 0.9 dtex which result from at least two types of ultrafine fiber-generating conjugate fibers, at least one conjugate fiber giving ultrafine fibers containing a modified vinyl alcohol resin, and the other conjugate fibers giving ultrafine fibers containing another resin(s). The ultrafine fibers can be obtained by a first splittable conjugate fiber including a component containing the modified vinyl alcohol resin and a second splittable conjugate fiber composed of components of other resins. In the ultrafine fiber layer, the fibers are preferably bonded by thermoadhesive resin-containing ultrafine fibers.

Abstract: A hydraulic pump includes a pump body having a bearing hole and formed with a seal chamber at an end of the bearing hole and an oil groove therein, the oil groove ensuring hydraulic communication between the pump unit and the seal chamber, a pump cover attached to the pump body to define a concavity for accommodating a pump unit, and a drive shaft arranged through the bearing hole of the pump body. A bearing bush, which is arranged through the bearing hole of the pump body to support the drive shaft, includes bush lugs disposed in the axial direction of the bearing hole of the pump body. Two of the bush lugs disposed at both ends of the bearing bush have seams located circumferentially distant from each other.

Abstract: A filter for filtering oil flowing through a fluid flow passage extending through the inside and outside of a plug forming part of a relief valve of a vane pump. The filter comprises a roll-shaped sheet formed of steel sheet spring and taking a generally cylindrical form. The roll-shaped sheet has overlapping first and second end sections, which are opposite to each other in a peripheral direction of the roll-shaped sheet. The roll-shaped sheet is located in the fluid flow passage and fitted on an outer peripheral surface of the cylindrical member. The roll-shaped sheet is formed with many through-holes having the size to allow the fluid to pass through the through-holes but trap particles for removal.