Did You Know...
...that a workman who left the soap mixing machine on too long was responsible for making Ivory Soap? He was so embarrassed by his mistake that he threw the mess in a stream. Imagine his dismay when the evidence of his error floated to the surface! Result: Ivory soap, the soap that floats.
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| Number | Title | Issue Date |
| 8096201 | Dustproof device for ball screw apparatus A ball screw device includes an elongated screw shaft and a ball nut having helical grooves for receiving ball bearing members, a housing is attached to the ball nut and includes a bore for receiving the screw shaft, and includes one or more slots communicative with... | 01/17/2012 |
| 7823471 | Method for hybrid vehicle powertrain control The method of the present invention provides a variety of vehicle performance characteristics depending on the mode of operation. A first routine is initiated to provide an optimal balance of powertrain responsiveness and fuel economy for any given combination of ve... | 11/02/2010 |
| 7562595 | Dust proof sliding device A sliding device for use with a variety of machines is reduced in overall length, thereby being compact in construction. The sliding device has a drive train enclosure made airtight and is acceptable for use in a clean environment. The sliding device includes an elo... | 07/21/2009 |
| 7500409 | Seal for ball screw and ball screw utilizing same A seal for a ball screw is provided with a foreign material removing member having a hole of a shape corresponding to a sectional shape of a ball screw shaft taken perpendicularly to an axis thereof to prevent a foreign material from invading from an outside of a ba... | 03/10/2009 |
| 7430933 | Seal for ball screw and ball screw utilizing same A seal for a ball screw is provided with a foreign material removing member having a hole of a shape corresponding to a sectional shape of a ball screw shaft taken perpendicularly to an axis thereof to prevent a foreign material from invading from an outside of a ba... | 10/07/2008 |
| 7278333 | Ball screw device A ball screw device has a screw shaft which has a shaft rolling groove in a spiral shape formed on an outer surface of the screw shaft, a nut which has a nut rolling groove formed on an inner surface of the nut and opposed to the shaft rolling groove, wherein the sc... | 10/09/2007 |
| 7219579 | Apparatus and method for actuating control surfaces An apparatus for actuating a control surface includes a first spur gear, a first drive assembly engaged with the first spur gear, a second spur gear, a second drive assembly engaged with the second spur gear, and a gear assembly capable of being coupled with the con... | 05/22/2007 |
| 7128199 | Hooked dust scraper for ball screw unit A hooked dust scraper for ball screw unit includes a plurality of tooth portions and corresponding number of hook portions. It is characterized that the scraper is hooked on the nut of the ball screw unit without employing screw engagement so that the ball screw uni... | 10/31/2006 |
| 7089819 | Linear guide apparatus A ball screw has a screw shaft including a screw groove formed in an outer peripheral surface thereof; a nut including a screw groove formed in an inner peripheral surface thereof and screwed together with the screw shaft through a large number of balls rollably dis... | 08/15/2006 |
| 7066649 | Actuator In an actuator, displacement resistance in axial movement of a slider is reduced to improve durability and enhance maintainability. At each side of the actuator, a slit is made between a top cover and a side cover. Magnetic bodies are provided on the surfaces of bot... | 06/27/2006 |
| 7026581 | Apparatus for positioning an elevator tube A wafer support position control mechanism selectively positions a semiconductor wafer along an axis of excursion within a process chamber. An elevator tube protrudes through an orifice in the chamber surface and is connected at a first distal end to the wafer suppo... | 04/11/2006 |
| 7000493 | Screw device having lubricant applying portion A screw device having a lubricant applying structure comprises a screw shaft provided with a spiral ball rolling groove, a nut provided with a loaded ball rolling groove having a spiral shape corresponding to the spiral ball rolling groove formed to the screw shaft,... | 02/21/2006 |
| 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 |
| 6976399 | Wiper ring and ball screw provided with wiper ring A wiper ring to be applied to a nut of a ball screw having a screw shaft comprises a plurality of segments each constituted as independent element having a seal portion to be contacted to the screw shaft, support pins extending in an axial direction of the screw sha... | 12/20/2005 |
| 6931955 | Seal for ball screw and ball screw utilizing same A seal for a ball screw is provided with a foreign material removing member having a hole of a shape corresponding to a sectional shape of a ball screw shaft taken perpendicularly to an axis thereof to prevent a foreign material from invading from an outside of a ba... | 08/23/2005 |
| 6925844 | Lock having a helical keyway and accompanying key and methods therefor The present application advantageously provides at least one keyway in a lock core that poses tremendous difficulty for a lock breaker by not allowing the lock breaker to see all of the pin tumblers in the keyway. The keyway according to a preferred embodiment of th... | 08/09/2005 |
| 6857332 | Linear or rotary actuator An actuator (1) for the linear displacement of a member to be controlled comprising a motor part (2) and an actuating device part (3) including a threaded screw (11) with linear displacement, and a rotary member (9) provided with a... | 02/22/2005 |
| 6732599 | Wiper ring and ball screw provided with wiper ring A wiper ring to be applied to a nut of a ball screw having a screw shaft comprises a plurality of segments each constituted as independent element having a seal portion to be contacted to the screw shaft, support pins extending in an axial direction of the screw sha... | 05/11/2004 |
| 6711963 | Ball screw One end of a cylinder disposed on the outer periphery of a ball screw shaft is fixed to the end face of a ball nut, while the other end of the cylinder is closed by an end plate to thereby form a lubricant filling space between the end plate and the leading end face... | 03/30/2004 |
| 6662672 | Linear actuator A linear actuator comprises a rotary driving source, a tube member which is supported by a support rib extending in a substantially horizontal direction along a side section of a base member, an internal movable member and an external movable member which... | 12/16/2003 |
| 6588289 | Linear actuator with protective guide chassis enclosing the lead screw A contamination resistant lead screw or ball screw-driven linear actuator has the lead screw and drive nut enclosed within a specially constructed guide chassis. A carriage is slidably mounted on parallel rails attached to the guide chassis. The carriage ... | 07/08/2003 |
| 6571653 | Ball screw Lubricant retaining slits (5) are formed on a pair of seal members (2) from end surfaces (2b) thereof facing inside in the axial direction of a nut (1) of a ball screw to intermediate portions of the seal members (2), and foreign bodies removing slits (6)... | 06/03/2003 |
| 6370975 | Actuator and actuator system An actuator has a linearly elongate frame, side, end, and top covers detachably and selectively mounted on side surfaces of the frame, a table mechanism displaceable in the axial direction of the frame in response to energization of an electric motor, and... | 04/16/2002 |
| 6237434 | Ball screw and nut assembly with a nut having a preloaded wiper thread and method of its manufacture and operation A ball screw and nut linear actuator has a screw and nut with helical grooves and threads providing a helical raceway between them. The raceway has a ball return portion and provides a track for a train of recirculating load bearing balls. A wiper member ... | 05/29/2001 |
| 6026696 | Device for converting a rotary motion into an axial motion A device for converting a rotary motion into an axial motion comprises an outer tube (10) with internal contours (10a), an inner shaft (11) with head (11a) with external contours (11b), an inner chamber (R) formed between tube (10) and shaft (11) and a pl... | 02/22/2000 |
| 6000292 | Actuator An actuator which makes it possible to avoid adhesion of dust or the like to a driving force-transmitting member, wipe out the fear of stop or breakage thereof, and avoid leakage of dust or the like to the outside. Fixing blocks 26a, 26b are slidably prov... | 12/14/1999 |
| 5956997 | Worm gear with a gear ring nut A worm gear for transforming a rotary motion into a reciprocating motion comprises a threaded spindle (2) which is mounted for rotation on at least one needle roller bearing (5) in a gear ring nut (22) which functions as a housing (21). A profiled gear ri... | 09/28/1999 |
| 5809831 | Electric actuator An electric actuator includes a hollow actuator housing, an electric motor connected to the hollow actuator housing, a feed screw shaft coupled to the drive shaft of the electric motor, for transmitting rotational drive power from the electric motor, and ... | 09/22/1998 |
| 5722294 | Seal member for use in ball screw apparatus In a ball screw apparatus providing a screw shaft, a ball screw nut and a plurality of balls, a seal member is formed of a ring which is fitted into a large-diameter portion of the ball screw nut and a ridge which engages the screw groove of the screw sha... | 03/03/1998 |
| 5609090 | Actuator with protective end cap A fluid-powered rotary actuator for providing rotary movement between first and second external members. The actuator includes a cylindrical body with first and second ends. The body is adapted for coupling to the first external member, and a shaft extend... | 03/11/1997 |
| 5555771 | Fixing structure for mounting member of a nut At least one end portion of a nut threadably engaged with a screw shaft is provided a mounting member mounting stepped portion, a radial through-hole is formed in the peripheral surface of the stepped portion and a radial pin insertion aperture is formed ... | 09/17/1996 |
| 5410922 | Locating table apparatus A locating table apparatus according to the present invention is provided with a housing, a base member fixed in the housing, a table mounted so as to freely move in a longitudinal direction, driving members located on the base member for supporting and d... | 05/02/1995 |
| 5329664 | Cleaning device for a threaded shaft A cleaning device (10) for a threaded shaft (12) having a cleaning member (34) having a threaded recess (42) received on the shaft (12) and extending partially around the shaft (12) with the threads (44) of the cleaning member (34) meshing with the thread... | 07/19/1994 |
| 5319990 | Cover system utilizing band A linear drive system with an associated cover system wherein said linear drive system comprises a load, a lead screw, a lead nut operatively engaged to said lead screw such that said lead nut can travel along said lead screw by virtue of rotation of the ... | 06/14/1994 |
| 5282390 | Industrial robot with means for cooling a linear motion nut and screw shaft A cooling means for removing heat generated in a portion of a solid ball-and-screw shaft (27) provided for a screw mechanism accommodated in an industrial robot and engaged with a linear motion nut (28) accommodated in the linear motion mechanism. The coo... | 02/01/1994 |
| 5228353 | Ball screw device A ball screw device has a ball screw nut and a ball spline nut, both mounted on a shaft. Both the nuts are supported on a housing with ball bearings interposed therebetween. Inner race grooves of the ball bearings are formed on outer peripheral walls of t... | 07/20/1993 |
| 5178029 | Ball screw seal A seal for use in a ball screw assembly sealingly engages portions of both the nut and the screw. The seal has a plurality of teeth at an outer peripheral surface, and further has a seal thread received in a thread on the screw. The seal is rotated relati... | 01/12/1993 |
| 5148714 | Rotary/linear actuator for closed chamber, and reaction chamber utilizing same A reduced pressure reaction chamber allows rotation of a workpiece, and translation of the workpiece along the axis of rotation, using a sealed rotate and translate actuator. The reaction chamber has rigid walls, and is particularly suited to reduced pres... | 09/22/1992 |
| 5125280 | Jack assembly A jack assembly of the ball screw or machine screw type includes a screw, a nut in driving engagement with the screw whereby rotation of the nut causes the nut or screw to move axially. A nut drive housing in which the nut rotates includes a worm gear tra... | 06/30/1992 |
| 5058445 | Irreversible screw and nut driving device In a screw and nut driving device with low internal friction, e.g. a ball nut mechanism, irreversibility is effected in a simple and efficient manner when the nut is rotatably driven and enclosed by an annular space in which a helical spring is arranged i... | 10/22/1991 |
