Quotables
"Telephone, n. An invention of the devil which abrogates some of the advantages of making a disagreeable person keep his distance. "
Ambose Bierce
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7536928 | Ball screw A ball screw, which improves its durability under circumstances where a radial load and a moment load are applied to it, has a screw shaft (2) formed with a helical screw groove (2a) on its outer circumferential surface. A nut (3) is adap... | 05/26/2009 |
| 7530282 | Ball screw apparatus A ball screw apparatus of a screw shaft circulating-type includes a nut having a first groove formed in an inner peripheral surface thereof, a screw shaft having a second groove formed in an outer peripheral surface thereof, and a plurality of rolling elements provi... | 05/12/2009 |
| 7357048 | Ball screw drive A ball screw drive comprising a spindle nut (2) that can be disposed on a spindle (1), said spindle nut (2) comprising on an inner periphery, a ball groove (3) that is arranged along a helix and defines a load-bearing channel (8) f... | 04/15/2008 |
| 7337689 | Ball screw mechanism, machining method for joint between nut and ball circulation piece, and electric power steering device A ball screw mechanism including a screw shaft with a screw groove formed on an external surface, a nut with a screw groove formed on an internal surface, and plural balls held in the grooves. A ball circulation piece is fit in a window portion in the nut and has a ... | 03/04/2008 |
| 7337690 | Leadscrew assembly with a wire-wound leadscrew and a spring-pin engagement of a drive nut to the leadscrew A leadscrew assembly includes a leadscrew having an elongated shaft with an outer lateral surface and a rotational axis, and a leadscrew thread formed of a thread wire helically wrapped in spaced-apart turns upon the lateral surface and affixed to the elongated shaf... | 03/04/2008 |
| 7305902 | Ball screw device A ball screw device comprises a screw shaft, a nut externally mounted on the screw shaft, and a multiplicity of balls interposed between thread grooves of the screw shaft and the nut. The screw shaft has a ball circulation groove for coupling downstream and upstream... | 12/11/2007 |
| 7284458 | Adjusting element device A device to be used with an adjusting element comprising a rod piston (3) displaceable with the aid of a motor (4) in a piston tube (2). The motor (4) is rotatably arranged at the adjusting element (1) through a worm gear (6... | 10/23/2007 |
| 7281604 | Electric power steering apparatus An electric power steering apparatus for converting rotation of a steering assist motor into movement of a steering shaft in the axial direction thereof in accordance with steering operation using a ball screw mechanism wherein a female thread groove formed around a... | 10/16/2007 |
| 7252017 | Axial adjusting device with multiple ball means An axial adjusting device comprising two discs which are rotatable relative to one another, which are supported coaxially relative to one another and between which there are guided balls in pairs of ball grooves whose depth varies across the circumference. Of the di... | 08/07/2007 |
| 7228751 | Ball screw mechanism A ball screw mechanism includes a ball screw shaft of a metal material coaxially connected to a rotary driving source, a nut member of a resin material being screwed onto the ball screw shaft, a plate member fixed to an upper surface of the nut member by screw membe... | 06/12/2007 |
| 7219570 | Long-span lead screw assembly with anti-backlash nut A lead screw assembly having a lead screw rotatable within a hollow tubular portion of a reinforcing rail. A nut engages with threads of the lead screw and is movable along the reinforcing rail. The lead screw includes plurality of first threaded portions having an ... | 05/22/2007 |
| 7214037 | Retention of ball bearing cartridge for turbomachinery An exemplary housing for a turbocharger includes a substantially cylindrical bore having a longitudinal axis, an inner diameter, a proximate end and a distal end; a counterbore positioned at the distal end, substantially centered on the longitudinal axis and having ... | 05/08/2007 |
| 7207234 | Ball screw In a ball screw, a nut is fitted with the outer periphery of a screw shaft, ball rolling grooves opposed to each other are formed in the screw shaft and the nut The ball rolling grooves cooperate in forming a ball rolling path therebetween. A tube as a return path d... | 04/24/2007 |
| 7201076 | Ball screw The ball screw comprises a shaft including a spiral-shaped shaft groove having a semicircular-shaped (Gothic-arch-shaped) section, a nut including a spiral-shaped nut ball groove which corresponds to the shaft groove and has a semicircular-shaped (Gothic-arch-shaped... | 04/10/2007 |
| 7185677 | Helical formation for a conduit A helical formation (2) for a conduit (1). The helical formation (2) comprises an elongate member defining at least a portion of a helix, the elongate member comprising two inwardly extending portions (6, 7). The inwardly extending portio... | 03/06/2007 |
| 7168343 | Limited access building connection A limited access building connection for connecting a holding structure and a held structure which includes an anchor member having a threaded end adapted for connection to holding structure. A nut having an inner threaded wall threadably engages the threaded end of... | 01/30/2007 |
| 7107805 | Method for the production of a spindle nut of a spherical thread drive mechanism Method for the production of a spindle nut (3) of a spherical thread drive mechanism, whereby the spindle nut (3) has at least one screw-shaped track (4) formed as a single piece on its inner circumference, whose threads (38) are limited ... | 09/19/2006 |
| 7080571 | Ball screw A ball screw has a screw shaft including a spiral-shaped ball rolling groove formed in an outer peripheral surface thereof; a nut including a spiral-shaped ball rolling groove formed in an inner peripheral surface thereof; a plurality of balls disposed in a raceway ... | 07/25/2006 |
| 7055284 | Window regulator having a driving threaded shaft whose distance from the window is variable A window regulator includes a threaded shaft (20) arranged at the concave side of the window (16) and extending in the direction of sliding of the same window, a nut screw (24) engaging the threaded shaft (20), which is movable up and dow... | 06/06/2006 |
| 7044016 | Ball screw A ball screw having: a screw shaft having a spiral ball rolling groove; a ball nut having a ball rolling groove corresponding to the ball rolling groove; and a large number of balls interposed between the ball rolling grooves so as to roll freely; wherein the ball r... | 05/16/2006 |
| 7024957 | Lead screw for linear actuator, and method of manufacturing the same A lead screw for a linear actuator, which has a metal pipe having a helical projection resin-molded on its outer surface, and a ball for a pivot bearing welded to a distal end of the metal pipe, is disclosed together with a method of manufacturing the same. With the... | 04/11/2006 |
| 7017437 | Ball screw In a ball screw drive comprising a spindle (1), a nut (3) surrounding the spindle (1), and balls (4) arranged between the spindle (1) and the nut (3), which balls (4) are in rolling contact with a screw track (2 | 03/28/2006 |
| 7007566 | Actuator for a motor vehicle transmission An actuator for an automated transmission in a motor vehicle drive train has a central actuating shaft with a shift finger. Two sleeves are supported concentrically on the actuating shaft and can be driven in mutually independent rotation. Two grooves of opposite he... | 03/07/2006 |
| 6983669 | Ball screw mechanism with integral opposing thread A ball screw mechanism has an opposing thread provided by an integral male thread formed at one end of a nut received on the screw. The male thread is of a smaller form than the female thread on the screw so as to not normally be in contact therewith, but should ay ... | 01/10/2006 |
| 6978693 | Ball screw The invention is a ball screw, comprising: a shaft having a spiral-shaped shaft; a nut having a spiral-shaped nut ball groove and screwed with the shaft via a plurality of balls; and a ball circulation passage for raking the plurality of balls at one end of the ball... | 12/27/2005 |
| 6955468 | Linear-motion device and ball screw A linear-motion device has: a linear-motion element fitted on a shaft which moves straight along the shaft; a plurality of balls which are retained in a ball groove formed on the inner side of the linear-motion element and roll over between the ball groove and the s... | 10/18/2005 |
| 6941831 | Ball screw apparatus The ball screw apparatus of an end cap type comprises a ball nut which includes a nut main body having a ball circulation hole penetrating through the nut main body in the axial direction thereof and two end caps respectively fixed to the two end portions of the nut... | 09/13/2005 |
| 6925900 | Ball screw The ball screw comprises a shaft including a spiral-shaped shaft groove having a semicircular-shaped (Gothic-arch-shaped) section, a nut including a spiral-shaped nut ball groove which corresponds to the shaft groove and has a semicircular-shaped (Gothic-arch-shaped... | 08/09/2005 |
| 6880421 | Rolled ball screw and method for rolling ball screw groove A rolled ball screw has a screw shaft having a ball screw groove so as to engaging with rolling elements of a ball screw, the screw shaft is formed by rolling while a thread rolling die is pressed against a cylindrical bar-shaped member to thereby roll the ball scre... | 04/19/2005 |
| 6584869 | Ball screw A ball screw includes a spindle element which has a first groove arrangement on an outer circumferential surface, a nut element which surrounds the spindle element and has a second groove arrangement on an inner circumferential surface, and a plurality of... | 07/01/2003 |
| 6557431 | Fail-safe ball screw A fail-safe ball screw assembly has a double-start screw and a corresponding nut. The screw has a first helix with a truncated, smaller diameter flat and an intertwined second helix with an extended, larger diameter flat. Similarly, the corresponding nut ... | 05/06/2003 |
| 6520038 | Drive device, for a movable part, in particular a hinged side window of a vehicle A drive device for a moveable part, in particular a hinged side window of a vehicle, with an actuating drive and with a threaded piece which is driven by the actuating drive and which meshes with an associated threaded piece, the associated threaded piece... | 02/18/2003 |
| 6484599 | Nut unit A nut unit (20) for use in a ball screw drive comprises a sleeve-shaped nut body (10) that is made of an essentially rigid material and that has an axis (A) and an inner circumferential surface (14). A one-piece, channel-shaped, ball-guiding strip materia... | 11/26/2002 |
| 6167769 | Screw mechanism A screw mechanism having a shaft which is guided in such a way that its reciprocating movement is converted at the output of the screw mechanism into a rotary movement. The shaft has a reciprocating rod and a round slide which are aligned axially with one... | 01/02/2001 |
| 6164407 | Electric power steering apparatus A vehicle steering apparatus (10) for turning steerable wheels (44) of a vehicle comprises a manually rotatable input member (12) to which steering torque is applied, an output member (34) rotatable to effect turning of the steerable wheels (44) of the ve... | 12/26/2000 |
| 5992258 | Rotation/linear motion converting mechanism A mechanism for converting rotational motion to linear motion having a roller thread mechanism interposed between a shaft having multiple male threads and a nut having multiple female threads. The female threads of the nut are opposite in direction to the... | 11/30/1999 |
| 5890393 | Electric lock actuator An electric actuator reciprocates an output shaft driven by an electric motor in a linear manner. The actuator has a main body case. A rotating body supported by the case includes a pin rotating body, a gear wheel, and a coil spring. The gear wheel is mes... | 04/06/1999 |
| 5848554 | Multistage spindle drive for converting rotary motion into linear motion A multistep spindle drive is provided for converting a rotary movement into a linear movement with different speeds of withdrawal and extension. The spindle drive includes at least two threaded spindles, which telescopically mesh with each other and are i... | 12/15/1998 |
| 5820035 | Broadcast spreader mechanism An improved feed distribution and closure mechanism for use with broadcast spreaders for spreading granular or powdery material or both is described. The mechanism comprises a threaded shaft, a disk mounted on the shaft having a central opening provided w... | 10/13/1998 |
| 5749265 | Ball screw device A ball screw device is designed such that a load axially applied to a ball nut is uniformly supported by balls of all ball screw groove portions. The design is such that a gap along a load acting line between a ball and a ball screw groove portion farther... | 05/12/1998 |
