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| Number | Title | Issue Date |
| 7013747 | Internal recirculating ball screw and nut assembly An internal recirculating ball screw and nut system that is easier to manufacture and more reliant by virtue of a particular configuration of the grooves on the interior of the nut or the follower. Crossback portions of select nut grooves are arranged in a manner th... | 03/21/2006 |
| 6481305 | Roller screw and roller screw roller arranging method In a roller screw, a plurality of rollers 16 interposed between a nut member 14 and a screw shaft 12 are composed of a forward-motion load roller group 17, the rollers 16 of which are arranged in such a manner that the center lines thereof are set at a gi... | 11/19/2002 |
| 6453761 | Direct attachment electric motor operated ball nut and screw linear actuator A linear actuator comprises a ball screw carrying an axially restrained rotatable ball nut driven by an electrically energized motor. An enclosing motor housing has front and rear walls with axially aligned openings for passing the ball screw. The motor h... | 09/24/2002 |
| 6364058 | Lubricant supply device A lubricant supply device is to be fitted to a nut member engaging with a screw shaft through rolling members to supply lubricant to the screw shaft along with a relative rotational motion of the nut member to the screw shaft. The device comprises an appl... | 04/02/2002 |
| 5535638 | Antifriction screw drive A screw and nut have intermeshed helical threads which may be of a form selected from a variety of shapes; for example, a buttress thread. A ball track is formed by cooperating grooves in opposing flanks of the screw and nut threads, and a circuit of ball... | 07/16/1996 |
