| Patent Number |
Title Of Patent |
Date Issued |
| 7255478 |
Transporting apparatus |
August 14, 2007 |
| A transporting apparatus which can horizontally transport a carrier using an air bearing of which a rotational degree of freedom is kept relative to a surface of a base. The transporting apparatus is movable along a surface of a base and includes an air bearing placed on a base, a co |
| 6568871 |
Spherical joint for coupling three or more links together at one point |
May 27, 2003 |
| A spherical joint for coupling three or more links together at one point. The joint includes a bail and a hollow spherical body wrapping the ball therein. The ball is movable in the hollow spherical body. An upper link inserted into and fixed to the hollow spherical body through an upper |
| 6477912 |
Six-degrees-of-freedom parallel mechanism for micro-positioning work |
November 12, 2002 |
| A six-degrees-of-freedom parallel mechanism for micro-positioning work is disclosed. This mechanism freely performs a desired motion of translation and rotation of a moving platform using internal and external links actuated by linear actuators capable of precisely controlling the link |
| 6393930 |
Ball screw with inner ball circulation and linear actuator equipped with the ball screw |
May 28, 2002 |
| A ball screw with inner ball circulation whose transfer displacement to size ratio is large, resulting in a device which has an optimized size with a positioning accuracy measured in microns, and a linear actuator equipped with the ball screw, are disclosed. The ball screw includes a |
