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| Number | Title | Issue Date |
| 7131245 | Over-center self-adjusting equalizing cap chuck An over-center self adjusting cap chuck adapted for operative attachment to a high-speed capping machine includes a housing having an outer peripheral surface defining an inner annular periphery with an interior face. A plurality of independent engagement jaws are a... | 11/07/2006 |
| 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 |
| 6913429 | Tooless bit retaining assembly A bit retaining assembly for retaining a bit in a rotary tool, in particular a router such as a hand-held router, a table-mounted router, a pocket cutter, a laminate trimmer, a rotary cutout tool, or the like employs a planetary gear system for multiplying the torqu... | 07/05/2005 |
| 6443462 | High speed drill holders A collet for carrying a high-speed drill which comprises a collar (2) arranged to enclose a drill shank (1), an outer rim support (8) arranged for attachment to a drill, and a clamping mechanism between the collar and the outer rim support (8). The clampi... | 09/03/2002 |
| 5785325 | Shaft bearing on a machine tool A shaft bearing for mounting the shaft ends of a rotating workpiece to be machined, especially an intaglio printing cylinder, has a rotatably mounted clamping chuck clamping the shaft end and having a hollow clamping head. The clamping head has gripping p... | 07/28/1998 |
| 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 |
| 5215507 | Planet gear device for grasping articles having axial symmetry A device for the grasping, moving and/or turning of articles having axial symmetry, preferably round and/or tubular articles, consisting of a drive unit and a plurality of gripper elements connected with it which are each arranged on a pivotally movable p... | 06/01/1993 |
| 5074176 | Threading machine chuck A rotatable chuck for supporting a plastic coated workpiece in a power driven threading machine is disclosed comprising workpiece engaging jaws mounted on the machine spindle for rotation therewith and for pivotal movement relative thereto radially inward... | 12/24/1991 |
| 5000465 | Work-holding apparatus Apparatus is disclosed for holding a generally cylindrical workpiece for honing or otherwise machining an internal bore. The workpiece is held by a gripping surface over most of the innermost turn of a spirally wound torsion band coil. The workpiece is gr... | 03/19/1991 |
| 4938489 | Self-centering holder for optical devices and the like A holder for an optical device such as a lens includes a frame and a plurality of arms pivotably attached to the frame. A resilient member urges the arms toward a closed position in which the arms meet at a common center within the frame. Linking members ... | 07/03/1990 |
| 4828276 | Device for handling workpieces A workpiece handling device comprising a carrier mounting a plurality of pivot levers, each of which holds a clamping element. The pivot levers are pivotable about axes extending parallel to one another and their clamping elements are adapted to be synchr... | 05/09/1989 |
| 4819527 | Threading machine chuck A rotatable chuck workpiece for a power driven threading machine is disclosed comprising a tubular spindle having front and rear ends and front and rear workpiece engaging jaws respectively at the front and rear ends. Each front jaw is connected to a corr... | 04/11/1989 |
| 4802680 | Coaxial collet chuck A coaxial collect truck is disclosed having at least two clamping jaws which are radially adjustable by a respective chuck lever, whereby every chuck lever is connected to a respective stationary base part at one end by a first spring joint and is connect... | 02/07/1989 |
| 4756538 | Device for clamping drill pipe and the like in mouse hole pipe The invention relates to a clamping device used for making up or breaking apart joints of drill pipe, drill collars and the like in mouse hole pipe during oil drilling operation. A clamping means of the device firstly clamps the drill pipe therebetween du... | 07/12/1988 |
| 4677758 | Spin drier for semiconductor material Disclosed herein is a spin drier for semiconductor material including a vertical shaft, a table located on the top of the shaft, support members for supporting thereon a semiconductor material, holding members for holding the outer periphery of the suppor... | 07/07/1987 |
| 4572525 | Centrifugal chucking apparatus Centrifugal chucking apparatus for fixing a member to be rotated to a rotatable driving member includes a cylindrical cage member adapted to be mounted for rotation with the driving member, at least one clamping body movably mounted within an aperture for... | 02/25/1986 |
| 4467681 | Chuck mechanism A chuck mechamism for holding a workpiece during a machining operation comprising a frame, a stop block secured to the frame and an annular jaw slidably mounted within an annular channel in the frame. The jaw is movable between a clamping position in whic... | 08/28/1984 |
| 4415172 | Friction welding machine having an expanding mandrel backstop assembly An improved mandrel chuck for the backstop assembly of a friction welding machine holds a first interiorly lobed workpiece as a second rotating workpiece is displaced into forceful engagement therewith. The improved chuck comprises a main body portion, an... | 11/15/1983 |
| 4407615 | Tool-clamping device A tool-clamping device for a hand tool machine with a rotary drive spindle includes a tool-clamping set having an outer sleeve mounted on an inner sleeve which serves to clamp a tool to be used and a locking plate which is pivotal relatively to a housing ... | 10/04/1983 |
| 4398733 | Jawed, lathe chuck In the embodiment shown, the chuck comprises a hub rotatably journalled in a jaw carrier, and the latter rotatably journalled in a body. The carrier pivotably mounts a plurality of jaws having camming surfaces, and drive pins upstanding from the hub and t... | 08/16/1983 |
| 4247124 | Chuck A chuck, especially for a device for machining pipes and the like as for instance for threading, deburring, cutting and similar operations, with chucking jaws pivotable about an axis substantially parallel to the axis of the chuck for chucking the workpie... | 01/27/1981 |
| 4222214 | Chucking apparatus Chucking apparatus is disclosed for engaging articles such as screw-type caps for applying the caps to containers. Caps are bottom or center fed to a fluid operated chuck device which grips the caps and screws them onto a container. The chuck device compr... | 09/16/1980 |
| 4215605 | Floating work driver chuck A work driver chuck having face and actuator plates interconnected by the pivot shafts of work holding cam jaws carried by and journaled for rotative movement in the face plate. Although normally centered on the rotational axis of the chuck, the assembly ... | 08/05/1980 |
| 4179775 | Adjustable clamping device An adjustable clamping device for clamping a pipe or the like of round peripheral shape through peripheral clamping engagement, comprising a driving unit, and only two pairs of members including a movable clamping member to be driven by the driving unit, ... | 12/25/1979 |
| 4176991 | Hinged tool holder A clamp for a tool spindle for rapid interchange of tools without the need to raise the spindle or lower the work further than the end of the tool to allow clearance. The clamp is provided with a recess co-axial with spindle and the tool is provided with ... | 12/04/1979 |
| 3995869 | Automatic clamping device for a cylindrical piece rotating about its longitudinal axis Apparatus for rotating a cylindrical workpiece to be machined, having one or two automatic clamping devices on a rotatable hollow driven shaft into which the workpiece is inserted. Each clamping device has three chuck jaws mounted to swing into clamping e... | 12/07/1976 |
