Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 8146467 | Electrical stressing means The invention relates to an electrical stressing means having a housing (2) which can be attached to the drive spindle of a machine tool and in which a threaded rod (3) for adjustment of the clamping jaws of a chuck is mounted such that it can be moved... | 04/03/2012 |
| 7654178 | Hydraulic chuck with independently moveable jaws A method of dialing a workpiece having an axis into a chuck includes providing a chuck assembly having a plurality of independent hydraulically controlled jaws distributed about a central axis, each jaw having first and second hydraulic chambers. The method further ... | 02/02/2010 |
| 7357170 | Split rim for tire, method of assembling a rim/tire assembly, and method and device for installing the rim/tire assembly A hollow-cylindrical portion (26) inserted in a hollow-cylindrical portion (16) of one rim section (12) is provided on the other rim section (13). To form a split rim (11), part (head portion) of the inner hollow-cylindrical portio... | 04/15/2008 |
| 7320352 | Split rim for pneumatic tire A split rim for pneumatic tire includes a disk part having a seat portion allowing a corresponding tire bead part to be seated at the radial outer end. First and second pieces are connected to the disk part and have cylindrical parts coaxial with the disk parts. The... | 01/22/2008 |
| 7299684 | Automated tool and workspace analysis An automated tool installation and workspace analysis method determines an axis of a fastener in order to determine positioning a fastener actuating tool. A center of gravity of the fastener is determined. The axis of the fastener is calculated based in part on the ... | 11/27/2007 |
| 7290968 | Extension fixture for turning tool An extension fixture for a turning tool includes a shank, a pull rod, a clamping sleeve, and a fixing member. Thus, the fixing member presses the rotation head of the pull rod to prevent the pull rod from being rotated, thereby preventing the clamping sleeve from be... | 11/06/2007 |
| 7261024 | Device for clamping a workpiece along a rotatably driven longitudinal axis The device is constructed with a tensioning spindle (12), a counter-holder (14) and a carrier (30), at least the tensioning spindle (12) being mounted such that it is rotatable about the longitudinal axis, and the carrier (14) bein... | 08/28/2007 |
| 7155788 | C-axis driving device of a computer numerical controlled lathing and milling machine A C-axis driving device of a computer numerical controlled (CNC) lathing and milling machine includes a spindle, an encoder, a spindle motor, and a servo motor. The spindle has a clamping device and a transmission portion. This encoder connects with the transmission... | 01/02/2007 |
| 7128490 | Cleaning apparatus and system A combination fluid dispensing bottle and scrubbing brush. The scrubbing brush is releasably secured to the bottle by a collar which has a first passage sized to be fit over and secured to a bottle cap covering the open spout of a plastic squeeze bottle, and a secon... | 10/31/2006 |
| 7062999 | Inverted vertical lathe The object of the invention is to provide an inverted vertical lathe comprising a device for replacing collets automatically, and having a detector for detecting that the collet has been gripped correctly. A chuck 400 mounted on a headstock 40 grips a ... | 06/20/2006 |
| 7039992 | Lathe A lathe 1 comprises a bed 5, a headstock 10 having a housing 13 and a support base 14, a main spindle 11, a first tool rest 44, and a second tool rest 50. The support base 14 is formed so as to have a co... | 05/09/2006 |
| 7025542 | Guide device for workpiece machining head, machine having the same, and guide method There is provided a guide device for a machining head capable of machining a workpiece such as a cylinder head of an engine accurately, a machine having the guide device, and a guide method. At least one of guide posts formed in a guide post member has an air pressu... | 04/11/2006 |
| 6997656 | Device and assembly for holding an object A device for holding an object, and an assembly for holding and rotating an object. The device includes a base, a series of posts, each of which is equidistant from a center point of reference and further pivotably holds a follower rotationally linked to all other f... | 02/14/2006 |
| 6938527 | Material stock advancing apparatus and method A material stock advancing apparatus for use with a turning and milling machine having a computerized numeric controller or lacking programmable capabilities. The material stock advancing apparatus generally comprising an elongate body of cylindrical form having fir... | 09/06/2005 |
| 6923712 | Method and apparatus for grinding rotors for hydraulic motors and apparatus therefor A fixture for selectively locating and retaining hydraulic gerotor rotors in position in respect to a grinding wheel, the fixture clamping the rotor between two oversized positioning rolls located in rotor lobe valleys on opposite sides of the rotor. ... | 08/02/2005 |
| 6918327 | Actuator for workpiece holding device A power chucking system 10 comprises a chuck mounted on a headstock, the chuck with its jaws being caused to rotate by rotation or the machine spindle 6. The spindle 6 may be engaged with the pulley 1 in order to rotate a work piece retai... | 07/19/2005 |
| 6916026 | Powered turntable with universal, self-adjusting chuck for holding auto wheels and the like for polishing A new and improved powered rotating turntable with a universal, self-adjusting chuck for holding auto wheels and the like for polishing, which includes a pneumatically-adjusted, self-centering metal chuck for gripping and holding specialty wheel rims of motor vehicl... | 07/12/2005 |
| 6892612 | Tire uniformity machine drive assembly A tire uniformity machine having a framework for receiving a tire to be tested, a rotatable chuck located within the framework and having a spindle driven by a motor directly coupled to the spindle to selectively cause rotation thereof, whereby the tire is chucked w... | 05/17/2005 |
| 6666120 | Facedriver for miniature workpieces A facedriver for holding a miniature workpiece along the axis of a rotary-drive machining device, including a base member, a forwardly-biased centerpoint member, drivepins supported rearwardly by fluid in a fluid-containing chamber in the base member, a g... | 12/23/2003 |
| 6647841 | Device for the end face driving of toothed workpieces The device serves for the end face, angularly true driving of a pre-toothed workpiece (21) clamped between work centers by the rotating work spindle (3) of a tooth flank grinding machine. It takes place by means of a wobble plate (10) connected without pl... | 11/18/2003 |
| 6640679 | Collet adapter chuck assembly with axially fixed collet head A collet chuck assembly for an axially fixed collet head. The collet head is fixedly and removably mounted in a threaded bushing to prevent axial motion, and is keyed into place to prevent rotation. A sleeve assembly has cam surfaces adapted to engage the... | 11/04/2003 |
| 6637307 | Method for machining a workpiece and chuck with a center pin for implementing it In order to machine a workpiece on a machine-tool successively between centers and with the workpiece clamped in a chuck, the workpiece is held during at least one machining operation--and if necessary between different kinds of machining--through the axi... | 10/28/2003 |
| 6634266 | Wheel hub assembly fixture A part clamping fixture assembly for locating and holding a wheel hub assembly for final finishing a flange face of the wheel hub includes a top portion having a bore formed therethrough. The fixture assembly includes a puller member having an upper end f... | 10/21/2003 |
| 6601485 | Dual brake rotor finishing system A brake rotor refinishing system provides simultaneously refinishing of two workpieces that are clamped at opposite ends of a duplex chuck, when the chuck is installed on a machine spindel. The duplex chuck has respectives sets of jaws that are independen... | 08/05/2003 |
| 6584877 | Tire uniformity machine drive assembly A tire uniformity machine having a framework for receiving a tire to be tested, a rotatable chuck located within the framework and having a spindle driven by a motor directly coupled to the spindle to selectively cause rotation thereof, whereby the tire i... | 07/01/2003 |
| 6502834 | Holding chuck for a tire-wheel with a chatter-suppressing device A holding chuck has a clamping device for firmly holding the tire-wheel in the position aligned with a center axis of a holding chuck. Chatter-suppressing dampers are disposed on an intermediate plate fitted around the chuck. The dampers are disposed on c... | 01/07/2003 |
| 6470776 | Clamping device and method of operation for a CNC machine A computer numerically controlled (CNC) machine has a chuck (2) rotatable about a first axis (A) and a V-block clamp (#) for clamping a workpiece (4) with its central longitudinal axis (C) extending parallel to the first axis (A). The offset (d) between t... | 10/29/2002 |
| 6397712 | Lathe chuck with jaw-position monitor A lathe chuck has a rotatable chuck body formed with jaw guides and with respective secantally extending rack guides crossing the jaw guides. Jaws are radially displaceable in the jaw guides between radial inner and outer end positions and have axially ba... | 06/04/2002 |
| 6374713 | Facedriver with fully-adaptable workpiece engagement and enhanced centerpoint force A facedriver for holding a workpiece along the axis of a rotary-drive machining device, including a base member, a forwardly-biased centerpoint member, drivepins supported rearwardly by fluid in a fluid-containing chamber in the base member, a grip member... | 04/23/2002 |
| 6302006 | Machine spindle A controlled spindle drive is utilized for producing an axially acting clamping force for the purpose of clamping/releasing tools or workpieces on the work spindle of machine tools. A two-part spindle shaft is enclosed coaxially by a ring which can be dis... | 10/16/2001 |
| 6272956 | Device for holding a workpiece or a bar of material to be machined A modular device for holding a workpiece or a bar of a material to be machined in a gripping chuck of a rotating spindle of a machine tool. A gripping chuck is actuated by a thrust tube coaxial with the spindle. To tighten the chuck, various forces are ex... | 08/14/2001 |
| 6199462 | Method of repairing cylindrical workpieces and lathe therefor A method of repairing a drill pipe having first and second connector ends, each of the first and second connectors ends including a threaded portion and sealing portions, with a lathe having a chuck with longitudinally spaced first and second sets of jaws... | 03/13/2001 |
| 6173630 | Working machine for machining a workpiece A working machine for machining a workpiece includes a base having a first track and a second track mounted therein and arranged in parallel with each other, at least one clamping device slidably mounted in the first track for clamping the workpiece, and ... | 01/16/2001 |
| 6145419 | Drive transmitting device A method of drive decoupling, and a drive decoupling device, utilized in connecting a driving member to a driven members that is attachable to a workpiece to be rotated about a drive axis, includes a laminated plurality of flexible sheet material, attache... | 11/14/2000 |
| 6128985 | Machine tool The machine tool includes a workpiece-holding spindle consisting of a slide capable of being moved along the X-axis perpendicular to the main axis of rotation of the machine. The slide is moved via a tie-rod, actuated at one end by a numerical axis and ha... | 10/10/2000 |
| 6079303 | Automatic adjustable power chuck system and method A power chuck system is disclosed featuring a motor, a harmonic drive and a chuck. The harmonic drive is arranged with an input member driven by direct connection with the motor rotor, and an output member directly connected to a long stroke jaw actuation... | 06/27/2000 |
| 6068267 | Tapered part turning apparatus A turning apparatus for a CNC or other turning machine comprises a faceplate having a locating insert secured and located therein for locating a part on a taper thereof. The turning apparatus clamps and draws the part into the locating insert to facilitat... | 05/30/2000 |
| 6053083 | Turning and boring machine with double centering positioners A work station between an active spindle adaptor and a passive spindle adaptor having a common rotational axis, receives a workpiece ring supplied from a loader shuttle. The ring has circular outer edges in parallel spaced planes perpendicular to the cyli... | 04/25/2000 |
| 6038948 | Workpiece spindle device for a machine tool A workpiece spindle device for a machine tool having a drivable workpiece spindle in a spindle housing and including a hydraulic oil supply device with a non-rotating housing portion connected to the spindle housing. An oil control device is connected to ... | 03/21/2000 |
| 5992278 | Attachment of workpieces on a lathe A kit for use in attaching and securing workpieces comprising hubless brake drums and rotors of various sizes on a lathe includes an arbor mount comprising a substantially cylindrical tube portion with an enlarged terminal member at one end. The arbor mou... | 11/30/1999 |
