Teramachi
Akihiro Teramachi, Tokyo JP
Patent application number | Description | Published |
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20080245170 | Roller Screw - A roller screw is provided having a structure suitable for circulating rollers. The roller screw has a screw shaft | 10-09-2008 |
20090049938 | Electric Actuator - An electric actuator is provided with a power transmission mechanism capable of converting a rotating driving power supplied from an electric motor to a reciprocating motion. This power transmission mechanism is provided with a cylindrical member formed, in its inner peripheral surface, with at least one row of rolling member rolling groove, a nut member disposed to be reciprocally through the rolling members endlessly circulating in the inner peripheral surface of the cylindrical member, and a cylinder rod operatively connected to an end portion of the nut member to be axially movable with respect to the cylindrical member. The reciprocating motion of the nut member in the axial direction is guided by the circular cylindrical member. According to such structure, high output and high controllability can be realized, as well as realizing of a compact electric actuator of a size similar to a conventional hydraulic cylinder. | 02-26-2009 |
20090146507 | Linear Motor Actuator - A linear motor actuator includes a raceway member | 06-11-2009 |
20100101348 | SCREW DEVICE MANUFACTURING METHOD AND SCREW DEVICE - A method of producing a screw device, having high productivity and capable of achieving sufficient strength of a nut. The method of producing a screw device has a groove forming step for previously forming a load ball rolling groove in a flat plate, which step is followed by a nut forming step for forming a nut by bending the flat plate into a ring. Since the method has, after the groove forming step in which the load rolling groove is formed in the flat plate, the nut forming step in which the flat plate is bent into a ring, sufficient strength of the nut can be easily achieved, and in addition, high compression stress is left in the load ball rolling groove in the inner diameter surface of the nut. | 04-29-2010 |
20150016759 | ROLLING GUIDE DEVICE - A rolling guide device is capable of facilitating smooth circulation of rolling elements in an endless circulation path, and enhancing the accuracy of motion of a moving member relative to a track member. The moving member includes: a main body member having load rolling surfaces and return paths for the rolling elements; direction change pipes incorporating inner direction change paths and having inner peripheral guide surfaces of outer direction change paths, respectively; and lid members each being mounted on the main body member and having outer peripheral guide surfaces of the outer direction change paths. The main body member has position reference holes formed therein so as to serve as position references for the direction change pipes, respectively, whereas the direction change pipes have positioning protrusions formed thereon so as to be press-fitted into the position reference holes, respectively. Further, the direction change pipes include rotation restriction protruding portions. | 01-15-2015 |
Masashi Teramachi, Aichi JP
Patent application number | Description | Published |
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20110114553 | HOLLOW POROUS MEMBRANE AND PROCESS FOR PRODUCING THE SAME - A hollow porous membrane with a reduced cost and excellent separation characteristic, water permeability, and mechanical strength and a process of producing the hollow porous membrane with an excellent adhesive property between a support and a porous membrane layer at a low cost are provided. The hollow porous membrane includes a porous membrane layer in which dense layers are disposed in the vicinities of an outer surface and an inner surface. In the process of producing the hollow porous membrane, membrane-forming dopes of a first membrane-forming dope and a second membrane-forming dope, which contain the material of the porous membrane layer and a solvent, are successively applied and stacked onto the outer circumferential surface of a hollow support and the applied membrane-forming dopes are simultaneously coagulated. In the process of producing the hollow porous membrane, a porous membrane layer is formed by applying a membrane-forming dope containing a material of the porous membrane layer and a solvent to the outer circumferential surface of the hollow support and coagulating the applied dope, and a hollow braid obtained by circularly knitting a yarn formed of multi-filaments is used as the support. | 05-19-2011 |
Masashi Teramachi, Toyohashi-Shi JP
Patent application number | Description | Published |
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20130292860 | HOLLOW FIBER MEMBRANE SPINNING NOZZLE, AND METHOD FOR MANUFACTURING HOLLOW FIBER MEMBRANE - A hollow fiber membrane-spinning nozzle that spins a hollow fiber membrane having a porous membrane layer and a support is provided in which the nozzle includes a resin flow channel through which a membrane-forming resin solution forming the porous membrane layer flows, the resin flow channel includes a liquid storage section that stores the membrane-forming resin solution and a shaping section that shapes the membrane-forming resin solution in a cylindrical shape and satisfies at least one of conditions (a) to (c): (a) the resin flow channel is disposed to cause the membrane-forming resin solution to branch and merge; (b) a delay means for delaying the flow of the membrane-forming resin solution is disposed in the resin flow channel; and (c) the liquid storage section or the shaping section includes branching and merging means for the membrane-forming resin solution therein. | 11-07-2013 |
Tomohiro Teramachi, Kariya-Shi JP
Patent application number | Description | Published |
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20090039990 | Magnet switch with magnetic core designed to ensure stability in operation thereof - A magnet switch which may be employed in automotive engine starters is provided. The magnet switch includes a stationary magnetic core made up of a disc assembly and a core body. The disc assembly is made of a stack of annular plate members superposed on each other. Each of the plate members has an opening through which a terminal lead of a magnetic coil extends. The core body has a boss with an edge which is plastically deformed outwardly in the radius direction thereof or staked to create an elastic nip which retains the stack of the plate members firmly on the core body. This structure ensures the joint between the disc assembly and the core body to withstand mechanical impact exerted on the magnetic core and stability in operation of the magnet switch without increasing a total production cost of the magnetic switch. | 02-12-2009 |