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| Number | Title | Issue Date |
| 8100414 | Chuck apparatus A piston is displaced by a pressure fluid supplied to a chuck body, whereupon a pair of first and second fingers that constitute a gripping member are operated to open and close along a base body. Further, a shaft-shaped bobbin is inserted through the interior of th... | 01/24/2012 |
| 7143490 | Tap process for hard workpieces A process and apparatus for producing screw threads in hard material workpieces with a series of taps. The present invention employs a threaded bore formed in a bracket assembly to align and position multiple taps on a rotary machine. The taps are used in sequence t... | 12/05/2006 |
| 7008294 | Method and device for grinding a rotating roller using an elastic steady-rest support The invention relates to a device for grinding rollers, also for grinding hollow rollers. As the rollers tend to vibrate transversally as a result of the contact with the grinding disc, a cushioned body is applied to the opposite side of the roller from the grinding... | 03/07/2006 |
| 6834864 | Chuck having quick change mechanism A chuck for use with a manual or powered driver having a drive shaft, the chuck including a body having a nose section and a tail section, the tail section configured to rotate with a drive shaft of a driver and the nose section having an axial bore formed therein, ... | 12/28/2004 |
| 6527279 | Integrated powered lathe chuck An integrated power chuck assembly for a lathe has a hollow lathe spindle of a diameter sufficient to accommodate at least the actuating cylinder and a multiple medium feed device and preferably at least part of the stroke-control device which can include... | 03/04/2003 |
| 6502835 | Collet holder with rotation mechanism and method A work piece holder with clamping and rotation mechanisms in a support. A holder or brake exists next to a collet and sleeve assembly to restrain the assembly from rotating. Hydraulic pumps and connections operate on the mechanisms for the clamping and ro... | 01/07/2003 |
| 6339990 | Gripping device, particularly for automatic printing and/or inserting machines The invention concerns on the one hand a gripping device (10), particularly for automatic printing and/or inserting machines, with a first and second gripping element (22, 24) of which at least one gripping element (22) can be moved relative to the other ... | 01/22/2002 |
| 6252289 | Electrical contact and housing for use as an interface between a testing fixture and a device under test An electrical contact, preferably made from a gold-plated, beryllium-copper flat stock which allows radio-frequency signal to pass with low noise, is provided within a housing. The electrical contact has two arms for contact with two external circuits. Th... | 06/26/2001 |
| 6241258 | Method of controlling clamping and unclamping of a hydraulic chuck A method is disclosed of controlling a hydraulic chuck of a rotary machine tool, the chuck clamping a workpiece to be machined and being actuated by a double-acting clamping/unclamping actuator. A clamping pressure controlled in accordance with a clamping... | 06/05/2001 |
| 6170835 | Workpiece clamping apparatus A plurality of clamping motion elements with clamping jaws are moved out of an initial position towards a workpiece under a low operating pressure and caused to bear thereagainst. When all the clamping jaws bear uniformly against the workpiece, a full cla... | 01/09/2001 |
| 6139028 | Electric chuck for machine tool and method of opening or closing gripping pawl of same The present invention relates to an electrically driven chuck for holding a chuck of a machine tool, wherein an electrically driven chuck which has no need of any driving means to be exclusively used for a holding chuck, very simplified, and freely adjust... | 10/31/2000 |
| 6069483 | Pickup chuck for multichip modules A pickup chuck which includes a body defining a fluid flow path and a first recess for receiving a semiconductor chip package, at least two chip contact members extending out of the body into the recess, each of which being independently movable in a firs... | 05/30/2000 |
| 5876043 | Threading or drill chuck with wireless fault transmission A chuck comprising a chuck body and monitoring electronics for detecting chuck faults fitted within the chuck body. A wireless transmission means is provided on the chuck body for transmitting signals from the monitoring electronics. The chuck has a dynam... | 03/02/1999 |
| 5876041 | Chuck drive system, especially for a rotating clamping device of a machine tool A chuck drive system, especially for a rotating clamping device of a machine tool, includes a rotating chuck cylinder, a stationary frame positioned adjacent the chuck cylinder, and a piston which subdivides the cylinder into two pressure chambers and is ... | 03/02/1999 |
| 5692998 | Tool data carrier for attachment to a tool carrier A data carrier in the form of an elastic ring segment has a radially outwardly facing surface to which the data providing tool information, are applied for example by printing. The ring segment has at least one radially inwardly effective connector elemen... | 12/02/1997 |
| 5688327 | Chuck assembly having a controlled vent A chuck assembly for engaging the inner surface of a hollow substrate including: (a) a body defining a hole, wherein the hole is positioned to be in communication with the air inside the substrate; and (b) a gas pressure regulating apparatus coupled to th... | 11/18/1997 |
| 5674031 | Tool holder in particular quick exchange chuck A tool holder comprises a receptacle having one end connectable with a machine spindle, to a receptacle and the like and an opposite end, a head provided on the opposite end and having a coaxial cylindrical head opening, a housing received non-rotatably a... | 10/07/1997 |
| 5522565 | Adjustable yarn package holder An adjustable yarn package holder which can support one of a plurality of variously sized yarn packages on a creel. The yarn package holder includes a pair of longitudinally adjustable elongate support arms which define a mandrel for receiving the core of... | 06/04/1996 |
| 5349787 | Disposable lap blank A lap blank and holder assembly includes a lap blank having two spaced apart flat surfaces separated by a given thickness and formed from a material capable of compressing about a member inserted into it. The holder has a projection extending outwardly fr... | 09/27/1994 |
| 5338045 | Device for application of mechanical and magnetic forces to a fixture A compound locking structure and applied device of mechanical and magnetic suction for fixture with a bearing face for workpiece being made into a magnetic sucking plate structure to enable the fixture to have mechanical chucking and magnetic sucking func... | 08/16/1994 |
| 5273295 | Debuckler An improved machine tool having means for automatically sensing axial movement of the jaw members relative to the collet housing and for adjusting the axial position of the collet to automatically compensate for the jaw movement to allow radial gripping o... | 12/28/1993 |
| 5269102 | Disposable lap blank A lap blank and holder assembly includes a lap blank having two spaced apart flat surfaces separated by a given thickness and formed from a material capable of compressing about a member inserted into it. The holder has a projection extending outwardly fr... | 12/14/1993 |
| 5267380 | Method and apparatus for centering a rotary body In a method and apparatus for centering a rotary body such as a motor vehicle tire the rotary body is put into a centered position by means of a plurality of centering means which engage the circular periphery of the rotary body at distributed positions a... | 12/07/1993 |
| 5235886 | Apparatus for manufacture of vehicle wheels Apparatus for forming at least one mounting opening in a vehicle wheel that includes a circumferential array of locating jaws movable between an outer position and an inner position radially inward of the outer position in which the locating jaws engage t... | 08/17/1993 |
| 5234222 | Workpiece support tool A workpiece support tool is disclosed for use with in providing an infinite variety of positions to receive and engage workpieces of differing shapes and sizes. The workpiece support tool provides precise support and positioning of the workpiece with resp... | 08/10/1993 |
| 5222421 | Centering device A centering device in a machine tool having a chuck for clamping a work includes a clamp device for clamping and centering the work at a different position with respect to the chuck. The clamp device has an actuator driven by a pressure medium and a holde... | 06/29/1993 |
| 5213348 | Workpart chuck positioning mechanism with independent shoes A workpart chuck centering mechanism moves towards the axis of rotation of the chuck as the chuck rotates in an eccentric non-centered position. The centering mechanism includes two independent shoes. Each shoe is driven by a servo-motor and encoder. The ... | 05/25/1993 |
| 5174179 | Holding device A holding device on a turning machine for a workpiece, which is held by a chuck serving as a clamping device and being arranged at a receiving disk, is equipped with separate correcting elements disposed at the clamping device. The correcting elements may... | 12/29/1992 |
| 5135242 | Adjustable chuck for gripping workpieces of different sizes at controlled pressures In an adjustable chuck for gripping workpieces of different sizes, three jaws are mounted for relative movement. A hydraulically driven mechanism is operable selectively for closing the jaws to grip a workpiece and for opening the jaws to free the workpie... | 08/04/1992 |
| 5108117 | Workpart chuck positioning mechanism with independent shoes A workpart chuck centering mechanism moves towards the axis of rotation of the chuck as the chuck rotates in an eccentric non-centered position. The centering mechanism includes two independent shoes. Each shoe is driven by a servo-motor and encoder. The ... | 04/28/1992 |
| 5072954 | Drill chuck with position indicator A drill chuck has a chuck body centered on and rotatable about an axis and formed with a plurality of guides angularly equispaced about the axis, respective jaw displaceable axially in the guides, an adjustment body rotatable about the axis on the body, a... | 12/17/1991 |
| 4909521 | Chuck having gripping and locating sensors An improved pull-back chuck is disclosed that detects when a workpiece is properly located against a locating surface of the chuck and when the workpiece is gripped with sufficient force by the jaws. A transducer is disposed within a master jaw in a porti... | 03/20/1990 |
| 4878679 | Variably operable hand-held device A hand-held device, such as a hammer drill, has a replaceable axially extending holder for a working tool. The device includes a sensor and a signal transmitter for adjusting its operating characteristics. The holder has through openings containing lockin... | 11/07/1989 |
| 4856177 | Automatic tool changer with electromagnetically readable tool holder having an electromagnetically coupling stopper for numerical control A tool holder is enclosed in a rack which is moved by a belt for automatic tool exchange. A stopper member provided for the rack is fitted into a positioning groove formed in a flange portion of the tool holder, thereby preventing the rotation of the hold... | 08/15/1989 |
| 4850766 | Pull stud A pull stud detachably attached to a tool holder includes a tool data storing element for storing tool data. The arrangement being such that tool data of each tool can be stored in the tool data storing element within the pull stud attached to the tool ho... | 07/25/1989 |
| 4790545 | Workpart centering mechanism for a chuck A workpart chuck is provided with a centering member that is movable toward the axis of rotation of the chuck as the chuck rotates the workpart in an eccentric non-centered position. As the centering member moves the workpart, a sensing device senses the ... | 12/13/1988 |
| 4773800 | Pull stud A pull stud detachably attached to a tool holder includes a tool data storing element for storing tool data. The arrangement being such that tool data of each tool can be stored in the tool data storing element within the pull stud attached to the tool ho... | 09/27/1988 |
| 4720907 | Identification system A system for marking and identifying objects, particularly work implements such as tools and work piece holders required in manufacturing processes, which has modules (4) with electronically readable markings, which modules (4) are to be arranged on the o... | 01/26/1988 |
| 4645220 | Apparatus and method for monitoring the readiness for operation of a power chuck To check the flat or planar clamping of a workpiece in the jaws of a chuck, and/or to measure the respective clamping jaws, a pressure responsive signal transmitter is provided in at least one of the contact surfaces of a clamping jaw 6 or in an elastical... | 02/24/1987 |
| 4624466 | Rotary chuck A rotary chuck having a plurality of clamping elements for clamping a respective workpiece. The clamping elements are interchangeable for adaptation of different dimensions of the workpieces, and can be actuated by a force operation via a direction-changi... | 11/25/1986 |
