Celebrity Inventors
Glam girl Heddy Lamar may have used her good looks to good effect on the silver screen, but she put her smarts to better use as an inventor. During World War II, she co-patented a frequency-switching system for torpedo guidance that was considered years ahead of its time.
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| Number | Title | Issue Date |
| 8146453 | Motion guide device A motion guide device is provided which comprises a chain of rollers in which retainers are interposed, in which the chain of rollers is given a degree of freedom of rotation. The motion guide device comprises a track member (5) on which a roller rolling part... | 04/03/2012 |
| 8100024 | External circulation type ball screw with a noise-reduction structure An external circulation type ball screw with a noise-reduction structure is provided with a noise-reduction cover to be mounted on the nut. The noise-reduction cover is defined with a noise-reduction groove with two ends to cover impacting portions of the return pat... | 01/24/2012 |
| 8096203 | Chain type transmission assembly A chain type transmission assembly doesn't have the problem that the chain interferes with the transmission assembly, the thickness of the links of the chain of the transmission assembly is precisely calculated by an equation, so that the chain can be prevented from... | 01/17/2012 |
| 8033195 | Low-noise screw device Provided is a screw device capable of reducing noise generated therefrom. The screw device has a screw shaft 5 having a rolling-element rolling groove 5a spirally formed on an outer peripheral surface of the screw shaft; a nut 6 ha... | 10/11/2011 |
| 7908938 | Ball screw module Provided is a ball screw module including a screw shaft, a nut member, a ball connector, and a circulating device inside the nut member. The screw shaft and the nut member constitute a first load rolling groove. The circulating device, being connected with the first... | 03/22/2011 |
| 7905157 | Ball screw unit A housing has a screw shaft passing wall in which a through hole, through which a screw shaft passes, is formed. A spline outer cylinder is held at one end by the screw shaft passing wall, and a disc spring that biases the spline outer cylinder toward the screw shaf... | 03/15/2011 |
| 7870806 | 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... | 01/18/2011 |
| 7806017 | Ball screw A ball screw is provided having a ball roller screw (1) and a screw nut (2) arranged thereon, whereby the balls (3) are arranged to endlessly circulate in a ball channel (6) defined by ball tracks (4, 5) on the ball roller screw ( | 10/05/2010 |
| 7694600 | Ball screw Ball screw, having a spindle nut (2) which may be provided on a recirculating ball screw (1) and on the inner circumference of which turns (3) of ball grooves (4), helically wound around an axis, are provided in which balls (5) can... | 04/13/2010 |
| 7640820 | Ball screw assembly and spacer elements therefor A ball screw assembly has an axially extending screw with an external helical groove and a nut with a through bore for receipt of the screw. The through bore has an internal helical groove adapted for cooperation with the external helical groove to define a ball rac... | 01/05/2010 |
| 7631572 | Ball circulating groove structure of ball nut In a ball circulating groove structure of a ball nut, a deflector is provided with an inner collar extending along a penetrating direction of a hole of the ball nut and engaging with the ball nut in a side of an inner surface of the ball nut, and an outer collar eng... | 12/15/2009 |
| 7530283 | Ball screw mechanism Between two mutually adjoining load balls 5, there is interposed a retaining piece 10 having two concave surfaces 11 which are respectively opposed to the two adjoining load balls 5. The retaining piece 10 has an outside diameter d... | 05/12/2009 |
| 7523681 | Ball screw device having deflecting member background of the invention A ball screw device includes a ball nut having an inner thread formed by a number of helical groove portions and helical ridges, and an opening and a depression communicating with each other, and a channel communicating with the depression of the ball nut, a radiall... | 04/28/2009 |
| 7390241 | Linear motion apparatus and method for manufacturing thereof A linear motion apparatus has a guide shaft including a spiral-shaped or linear-shaped rolling element rolling groove, a movable body including a spiral-shaped or linear-shaped rolling element rolling groove opposed to the rolling element rolling groove of the guide... | 06/24/2008 |
| 7372625 | Device for retaining optical components A device for retaining optical components includes a number of open orifices disposed next to one another in an arrangement. A raceway corresponding to the arrangement is provided, the raceway including a number of detents. A ball bearing follows the raceway and coo... | 05/13/2008 |
| 7365925 | Method of aligning optical elements A method of aligning an optomechanical assembly and an optomechanical assembly are described. ... | 04/29/2008 |
| 7363835 | Ball screw apparatus A ball screw apparatus includes: a screw shaft having a screw groove, a nut having a screw groove and holes, a number of balls rollably provided between the screw grooves, and a ball circulating member having an end portion to be fitted to the holes. The ball circul... | 04/29/2008 |
| 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 |
| 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 |
| 7278332 | Linear motion device A linear motion device has: a linear motion body externally fitted onto a shaft and making a relative linear motion along the shaft; a plurality of balls retained in a rolling element groove formed in an inner surface of the linear motion body, and rolling between t... | 10/09/2007 |
| 7249533 | Ball screw device A ball screw device comprises a nut having a thread groove in the inner peripheral surface thereof, a screw shaft having a thread groove in the outer peripheral surface thereof and a plurality of balls interposed between the respective thread grooves. In the screw s... | 07/31/2007 |
| 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 |
| 7222553 | Ball screw apparatus The invention provides a ball screw apparatus which suppresses abrasion and damage by competition of balls, controls spaces between retaining pieces and balls, and prevents retaining pieces from falling, thereby enabling to more improve operating ability. The retain... | 05/29/2007 |
| 7216559 | Guide actuator with high radial direction load capacity The present invention relates to a new guide actuator with high radial direction load capability, which has the purpose of providing a directional force bearing way to common loading method to make the actuator can bear load and transmit with higher accuracy. On des... | 05/15/2007 |
| 7210369 | Ball screw drive In 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 (6... | 05/01/2007 |
| 7207235 | Ball screw mechanism and electric power steering apparatus using such mechanism An electric power steering apparatus comprises a rack-and-pinion mechanism and a ball screw mechanism. The ball screw mechanism comprises a shaft formed a screw groove and a nut formed a screw groove. A ball-roll path is created spirally by the screw grooves of the ... | 04/24/2007 |
| 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 |
| 7188542 | Liner motion device, rolling device and separator for rolling device A liner motion device has a liner motion element fitted on a shaft and moving straight along the shaft; a plurality of balls which are retained in a rolling element groove formed on the inner side of the liner motion element and roll over between the rolling element... | 03/13/2007 |
| 7185553 | Screw feed apparatus A screw feed apparatus has a screw shaft having a screw groove formed on the outer peripheral surface thereof; a nut having a screw groove formed on the inner peripheral surface thereof opposed to the outer peripheral surface of the screw shaft; a large number of ro... | 03/06/2007 |
| 7159484 | Linear motion device A linear motion device includes an inner member and an outer member cooperatively forming a ball circulating path therebetween, a plurality of balls rollably disposed in the ball circulating path, and a plurality of retaining pieces interposed between the balls, whe... | 01/09/2007 |
| 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 |
| 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 |
| 7062987 | Ball bearing and a continuously variable speed transmission of belt type A ball screw in a continuously variable speed transmission has an axially immovable pulley half (2) and axially movable pulley half (3) both mounted on a rotary shaft (4). The axially movable pulley half (3) is moved by a ball screw (2... | 06/20/2006 |
| 7044017 | Roller screw system A higher efficiency roller screw system that includes a nut body designed to engage a threaded shaft. The nut body includes a center bore with closed, partial helical grooves formed therein. Disposed inside the center bore is a shaft with open helical threads formed... | 05/16/2006 |
| 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 |
| 7040189 | Circulation member of ball screw and ball screw using same A circulation member of a ball screw for circulating a ball rolling on a spiral ball rolling groove formed on a screw shaft. The circulation member includes a central portion and a pair of leg portions disposed at both ends of the central portion so as to extend the... | 05/09/2006 |
| 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 |
| 6993992 | Ball screw A ball screw which is little subject to deterioration of operating characteristics and occurrence of wear, torque change, noise, vibration, etc. during operation due to stagnation or competition of balls. The ball screw includes a screw shaft having a helical thread... | 02/07/2006 |
| 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 |
