IWAKI Co.

Saitama, Japan

IWAKI Co.

Saitama, Japan
SEARCH FILTERS
Time filter
Source Type

Patent
Iwaki Co. | Date: 2017-01-24

A plunger pump includes a cylinder section having a cylinder chamber and a spacer section sliding against a portion of the plunger closer to a proximal end side than a portion of a plunger advancing and retracting into the cylinder chamber. The cylinder section is made of a material having first hardness, and the spacer section being made of a resin material having second hardness softer than the first hardness. A length in an axial direction from a proximal end of a sliding portion of the spacer section sliding against the plunger to a distal end of the spacer section is larger than a maximum stroke length of reciprocation of the plunger.


Patent
Iwaki Co. | Date: 2014-02-05

Disclosed is a bellows pump which is provided with a case member that forms an axial space therein, closed-bottomed cylindrical bellows that are arranged in the space in an axially extendable/contractable manner and axially separate the space into a pump chamber and an operation chamber, suction valves that are provided on a suction side of the pump chamber and guide a fluid to be transferred to the pump chamber, and discharge valves that are provided on a discharge side of the pump chamber and discharge the fluid to be transferred from the pump chamber, and which extends/contracts the bellows by introducing a working fluid into the operation chamber to discharge the working fluid from the operation chamber, wherein each of the bellows is configured by alternately forming mountain portions and valley portions along the axial direction and having, on a predetermined position in the axial direction, annular ring portion integrally formed therewith.


Patent
Iwaki Co. | Date: 2010-10-08

A reciprocating pump introduces a liquid into a pump chamber through a suction valve and discharges the liquid from the pump chamber through a discharge valve by reciprocating movement of a reciprocating member facing the pump chamber. The suction valve and the discharge valve include: a body portion having therein a flow path for a liquid; a valve seat portion provided at an entrance side of the flow path of the body portion and having therein a hole through which the liquid flows; a valving element provided in the body portion and able to open and close the hole of the valve seat portion; and a spring provided in the body portion for pressing the valving element into the hole of the valve seat portion. The spring has projections which are formed on an outer circumferential portion of its surface to project toward the inner wall of the body portion.


Patent
Iwaki Co. | Date: 2010-10-13

A maglev motor and a pump using the maglev motor can be provided with strong magnetic bearing force generated by a simple structure, rotation losses of a rotor reduced with the generation of an eddy current suppressed, and a configuration of magnetic bearing can downsize by using a thin rotor. The donut-shaped rotor is arranged between the magnetic bearing unit and the motor unit, the motor yoke of the motor radially has a plurality of projected poles, a coil is close-wound around the projected pole, predetermined clearance is made between the inner side of the rotor and the projected pole, a plurality of two projected poles opposite each other near either end portions of the outer side of the rotor are provided circularly at equal intervals on the magnetic bearing yoke of the magnetic bearing unit, a magnetic bearing coil is close-wound around one of the two projected poles, a first permanent magnet is provided for the other projected pole, predetermined clearance is made on one side of the rotor end portion and the bridge unit for connecting the magnetic bearing unit to the motor unit is provided, a second permanent magnet is provided between the projected pole provided for the magnetic bearing yoke and the bridge yoke of the bridge unit, a third permanent magnet is provided between the motor yoke and the bridge yoke, a plurality of motor permanent magnets opposite the motor yoke are provided inside the rotor, and all projected poles provided on the bridge unit side of the magnetic bearing unit can be close-wound by the magnetic bearing coil, or provided with the first permanent magnet.


Patent
Iwaki Co. | Date: 2016-11-02

A magnetic pump includes a front casing 1 including: a shaft supporting body 6 that supports a leading end of a supporting shaft 9; and a plurality of supporting legs 7 that extends toward an inner wall of a suction port 4 from the shaft supporting body 6, and that supports the shaft supporting body 6 in the suction port 4. In the magnetic pump, a leading end of the shaft supporting body 6 is positioned further toward the inlet side of the suction port 4 than a connecting section between the inner wall of the suction port 4 and the supporting leg 7.


Patent
Iwaki Co. | Date: 2012-03-08

A bellows pump which is provided with a case member that forms an axial space therein, closed-bottomed cylindrical bellows that are arranged in the space in an axially extendable/contractable manner and axially separate the space into a pump chamber and an operation chamber, suction valves that are provided on a suction side of the pump chamber and guide a fluid to be transferred to the pump chamber, and discharge valves that are provided on a discharge side of the pump chamber and discharge the fluid to be transferred from the pump chamber, and which extends/contracts the bellows by introducing a working fluid into the operation chamber to discharge the working fluid from the operation chamber, wherein each of the bellows is configured by alternately forming mountain portions and valley portions along the axial direction and having, on a predetermined position in the axial direction, annular ring portion integrally formed therewith.


Patent
Iwaki Co. | Date: 2010-07-21

A magnetic levitation motor including a stator having magnetic bearing units and a motor unit, and a rotor provided to the stator. And the occurrence of an eddy current at a magnetic bearing is suppressed and the rotation loss of the rotor can be reduced, and also to provide a pump using such the magnetic levitation motor.


Patent
Iwaki Co. | Date: 2013-12-27

A magnetic pump includes a front casing including: a shaft supporting body that supports a leading end of a supporting shaft; and a plurality of supporting legs that extends toward an inner wall of a suction port from the shaft supporting body, and that supports the shaft supporting body in the suction port. In the magnetic pump, a leading end of the shaft supporting body is positioned further toward the inlet side of the suction port than a connecting section between the inner wall of the suction port and the supporting leg.


Trademark
Iwaki Co. | Date: 2016-04-08

Pumps, namely, pumps as part of machines; centrifugal pumps; compressed air pumps; lubricating pumps; rotary pumps; positive displacement reciprocating pumps; vacuum pumps; pumps for machines.


Trademark
Iwaki Co. | Date: 2016-05-17

Measuring or testing machines and instruments, namely, durability testing apparatus for auxiliary artificial hearts; Medical apparatus and instruments, namely, cardiac function simulators.

Loading IWAKI Co. collaborators
Loading IWAKI Co. collaborators