Did You Know...
...that two musicians were responsible for the invention of color print film? Fascinated by photography, Leopold Godowsky and Leopold Mannes worked together to produce an easy-to-use, practical color film. They worked full time as music teachers and gave concerts while experimenting during their off hours in Mannes' kitchen. Their success earned them full-time, well-paying jobs at Kodak and their efforts resulted in Kodachrome film, which was introduced in 1935.
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| Number | Title | Issue Date |
| 7357890 | Apparatus and method for extruding a multilayered structure An apparatus and method for extruding a multilayered article employs a shearing rod connected to the end of an extruder screw. The shearing rod is rotated along with the extruder screw and shears the polymer materials being advanced along an annular space between th... | 04/15/2008 |
| 7350434 | Ball screw device The invention relates to a ball screw device in which a screw shaft and a nut member are threadedly engaged with each other through a number of balls. In such a ball screw device, an inner surface of a cover plate contacting an end surface of a nut main body is prov... | 04/01/2008 |
| 7300662 | Drug/drug delivery systems for the prevention and treatment of vascular disease A drug and drug delivery system may be utilized in the treatment of vascular disease. A local delivery system is coated with rapamycin or other suitable drug, agent or compound and delivered intraluminally for the treatment and prevention of neointimal hyperplasia f... | 11/27/2007 |
| 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 |
| 7229473 | Local delivery of rapamycin for treatment of proliferative sequelae associated with PTCA procedures, including delivery using a modified stent Methods of preparing intravascular stents with a polymeric coating containing macrocyclic lactone (such as rapamycin or its analogs), stents and stent graphs with such coatings, and methods of treating a coronary artery with such devices. The macrocyclic lactone-bas... | 06/12/2007 |
| 7223286 | Local delivery of rapamycin for treatment of proliferative sequelae associated with PTCA procedures, including delivery using a modified stent Methods of preparing intravascular stents with a polymeric coating containing macrocyclic lactone (such as rapamycin or its analogs), stents and stent graphs with such coatings, and methods of treating a coronary artery with such devices. The macrocyclic lactone-bas... | 05/29/2007 |
| 7217286 | Local delivery of rapamycin for treatment of proliferative sequelae associated with PTCA procedures, including delivery using a modified stent Methods of preparing intravascular stents with a polymeric coating containing macrocyclic lactone (such as rapamycin or its analogs), stents and stent graphs with such coatings, and methods of treating a coronary artery with such devices. The macrocyclic lactone-bas... | 05/15/2007 |
| 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 |
| 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 |
| 6938510 | Ball screw apparatus A ball screw apparatus, has a screw shaft including a screw groove; a nut fitted with the screw shaft, the nut including a screw groove and a ball return passage; a circulation piece including a ball circulation passage; and, a large number of balls, wherein, in the... | 09/06/2005 |
| 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 |
| 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 |
| 6702263 | Diffuser saddle connection A diffuser saddle connection is used for the attachment of diffusers on submerged air laterals in systems that treat municipal and industrial waste water. A top saddle surface and a bottom saddle surface enclose a portion of a feed pipe. A spout attached ... | 03/09/2004 |
| 6653556 | Conductive gasket A conductive gasket includes: a non-conductive, elastic core; a flexible conductive cloth enclosing an outer surface of the core; a hot-melt adhesive inserted between the core and the conductive cloth to attach the core and the conductive cloth; a pressur... | 11/25/2003 |
| 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 |
| 6276225 | Ball screw assembly A ball screw assembly includes a screw shaft with a spiral groove, balls along the groove, a nut with the screw shaft relatively rotatable with the balls, and a seal device. A portion of each seal member is radially divided into blocks by plural slits so ... | 08/21/2001 |
| 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 |
| 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 |
| 5324047 | Thread seal A thread seal comprises a helical rib (6) for use with a threaded member (1). The end portions (7) of the rib (6) are axially staggered and are joined by a transverse thread bridging member (8) which engages a crest (9) of the thread between successive tu... | 06/28/1994 |
| 5029877 | Seal for a thread drive A seal for a thread drive including several ring parts arranged one within the other, to provide a dependable and compact unit comprised of a few parts. A sealing ring which surrounds and rests against the threaded spindle is comprised of rigid plastic. T... | 07/09/1991 |
| 4913448 | Sealing arrangement A sealing arrangement for a container in which an auger having vanes is disposed in the chamber thereof for moving particulate material stored therein. A threaded sealing member is adapted to engage the auger vanes so as to be driven along the container o... | 04/03/1990 |
| 4905533 | Seal and scraper assembly for ball bearing screws and the like A seal and scraper assembly for a ball screw and nut actuator has a resilient seal ring for reception by the nut which includes a radially internal helical thread mating with the screw groove. The seal ring further has a radially compressible annular lip ... | 03/06/1990 |
| 4795172 | Grease seal for a power screw system A distortable diaphragm seal, which is preferably formed of felt, seals each end of a nut through which a screw extends. Grease, which is introduced into the interior of the nut to function as a lubricant, is sealed therein by the seal. The seal has an op... | 01/03/1989 |
| 4407511 | Seal and scraper assembly A seal and scraper assembly for a nut and screw actuator has an elastomeric member bonded to a metal ring. The elastomeric member has an annular lip outer portion and a helical thread form inner portion. The inner portion has a plurality of scraper or wip... | 10/04/1983 |
| 4355905 | Adjustable plug seal mechanism for heat transfer zone separation in hollow screws for extrusion machines An easily-movable plug seal that is susceptible to quick and ready longitudinal adjustment in the central, lengthwise bore of an internally differentially heated (or cooled) extruder screw for sequentially diverse and distinct heat controlled zones within... | 10/26/1982 |
| 4286793 | Ice breaking and mud deflecting device for a ball screw and nut assembly A ring is telescoped into the end of a nut of a ball screw and nut assembly and carries a lip which breaks ice away from the screw. The plastic insert of relatively short circumferential length is supported by the ring and is urged into the groove of the ... | 09/01/1981 |
| 4226431 | Sealing device for screw threads A sealing device for preventing fluid leakage between a screw and a nut threaded thereon. The thread on the screw includes a cylindrical crest and a helical rounded groove. The device includes an annular elastomeric member having inner and outer periphera... | 10/07/1980 |
| 4217813 | Power steering gear with delashed piston nut and screw threading Power steering gear with integral rotary valve for directing hydraulic pressure fluid to and from a piston nut and in which an elongated screw threaded through the piston nut is slit longitudinally to give the metallic screw a barrel-shape configuration w... | 08/19/1980 |
| 4175475 | Worm thread seal for steering gear Worm to rack piston seal for power steering gear having a resilient cylindrical body with internal thread construction conforming to the profile and lead of the worm for a rack piston nut. During powered right and left turns, the seal is pressure loaded r... | 11/27/1979 |
| 4159118 | Sealing device for screw threads A sealing device for sealing between a screw and a nut threaded thereon. The device is particularly suitable for sealing a ball type screw wherein the thread on the screw includes a helical rounded groove and wherein the thread crest is a cylindrical surf... | 06/26/1979 |
| 4150835 | Grooved shaft seal This specification discloses a seal for a threaded shaft which reciprocates relative to a housing. The seal includes radial reinforcing means to provide an interference sealing fit with the housing and a thread on its internal surface which mates with the... | 04/24/1979 |
| 4053167 | Seal for ball bearing screws and the like A seal for a ball bearing score and the like comprising a ring of elastomeric material axially and angularly fixed to the nut so that an internal projection from the bore of the ring makes sliding sealed engagement with a line or a circumferentially narro... | 10/11/1977 |
| 4052076 | Screw seal An improved screw seal for providing a dynamic seal between a screw and a nut is disclosed. A carrier for the screw seal includes a chipper, wiper, and a sealing member. The wiper includes a wiper seal and a drain groove which cooperate to remove lubrican... | 10/04/1977 |
