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Kenji Hisamoto Patents |
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Inventor: Hisamoto; Kenji
Address: Utsunomiya, JP
No. of patents: 5
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 7278150 |
Disc-chucking mechanism having contractable/expandable O-ring for fixing disc |
October 2, 2007 |
| A chucking mechanism which reliably attaches and detaches a disc with high precision. The chucking mechanism includes a shaft for supporting the disc and having a tapered recess, a tapered cone adapted to fit in the tapered recess, and a piston for moving a rod, attached to the tapered |
| 6307284 |
Positioning apparatus, information recording/reproducing apparatus, and inspection apparatus |
October 23, 2001 |
| A positioning apparatus includes a movable member, an actuator for driving the movable member in a moving direction, a gravity guide having a reference surface for supporting the movable member in a gravity direction, a yaw guide for guiding the movable member from one side thereof i |
| 5760392 |
Scale for use with a displacement sensor |
June 2, 1998 |
| A scale, which is provided for use with a displacement sensor, has a high degree of freedom and is capable of being manufactured at a low cost. The scale includes a graduation section and a base board which is formed separately from the graduation section and which is bonded to the g |
| 5742391 |
Optical type sensor for use as an optical measuring head or optical pickup |
April 21, 1998 |
| An optical type sensor has a light emitting element, a light receiving element, at least one optical element acting on a light beam emitted from the light emitting element, in an optical path till the light beam enters the light receiving element, and a spacer member disposed to define a |
| 5537210 |
Rotation detecting apparatus and scale having a multi helix diffraction grating for the same |
July 16, 1996 |
| A rotation detecting apparatus includes a grating portion provided on one of two objects for which relative rotation is to be detected, a light-emitting portion provided on the other of the two objects, and a light-receiving portion provided on the other object. The grating portion h |
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