Tsujiyama
Hirokazu Tsujiyama, Shizuoka JP
Patent application number | Description | Published |
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20120279815 | SHOCK ABSORBER - A shock absorber includes a hydraulic cylinder, a reservoir tank, and a damping force adjusting device. The damping force adjusting device includes a valve body, a oil chamber, a solenoid coil, a plunger and an oil path constitution member. The oil path constitution member includes an oil path and an oil path for hydraulic fluid that flows out of the hydraulic cylinder. The plunger moves in an axial direction based on a magnetic field generated by the solenoid coil. The valve body moves closer to or away from the oil path inside the oil path in association with the plunger. The oil chamber and the oil path communicate with each other via a communication path of the valve body. | 11-08-2012 |
Masashi Tsujiyama, Tokyo JP
Patent application number | Description | Published |
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20110198033 | SHUTTER DEVICE AND VACUUM PROCESSING APPARATUS - A shutter device having two shutter plates, which shield between an IBS and a substrate, is configured such that the two shutter plates are disposed at symmetrical positions across the IBS and can perform an opening/closing operation in synchronization with a rotation of a rotation-link-member which is rotatably disposed surrounding the IBS. With the configuration, the shutter device can reduce an offset of a shield range in the opening/closing operation. | 08-18-2011 |
Masashi Tsujiyama, Kawasaki-Shi JP
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20150287567 | GRID ASSEMBLY AND ION BEAM ETCHING APPARATUS - An object of the invention is to provide a grid assembly which is easy to assemble and is high in assembly reproducibility, and an ion beam etching apparatus including it. A grid assembly is constructed of three grids each in the shape of a circular plate, which are stacked one on top of another. The grid assembly includes three fixing holes for fixing the three grids, and three positioning holes for positioning the three grids. In assembly, the three grids are stacked one on top of another on a first ring so that positioning pins provided on the first ring are inserted into the positioning holes. Then, a second ring is stacked on top of the three grids, and bolts are inserted into the fixing holes. Thus, positioning is performed by using the fixed positioning pins and thereafter the fixing can be performed, which facilitates the assembly. | 10-08-2015 |