Class 82/169 - Expansible

Subclass of Class 82 - Turning
Definition: Subject matter wherein the device is provided with a work
No. of patents: 38
Last issue date: 07/17/2007

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Number	Title	Issue Date
7243722	Expander device Apparatus (9) for radially expanding an expandable member, the apparatus including a plurality of radially moveable fingers (22). The radially moveable fingers (22) can move between two positions; in a first position, the moveable fingers (22...	07/17/2007
6902640	Method for manufacturing a belt The objective of the present invention is to provide a method and apparatus for manufacturing an intermediate transfer belt and a fixing belt with high quality used in copying machines, printers and the like. An unvulcanized rubber is formed into a sheet and ...	06/07/2005
6739600	Expanding sleeve fixture A push-type expandable fixture provided to secure a work-piece to a rotatable machine. An expandable sleeve is inserted within a bore of a hollow work-piece. The work-piece together with the expandable sleeve is disposed about a pair of wedge members which are in tu...	05/25/2004
6182349	Method for producing a seamless metallic belt A method for producing a seamless metallic belt without a welded line and capable of being easily produced in high accuracy. A seamless belt material 21 having a defined length as a whole is placed on a core 11 and is held in a stretching state on the cor...	02/06/2001
5941146	Work spindle A work spindle for a machine tool. The work spindle has a spindle guard tube, a clamping arrangement, a clamping force generator, which is arranged on the spindle guard tube and operates the clamping arrangement, and which has at least one first cylinder ...	08/24/1999
5690007	Cutting apparatus for obtaining a specimen of a food product container A cutting apparatus includes a mandrel insertable in a food product container. The mandrel supports the container in a fixed position by contacting an inner surface of the container. The mandrel is locatable on a support apparatus so that as the mandrel a...	11/25/1997
5667228	Quick change mandrel for an engine lathe etc A two piece mandrel having two co-operating interfitting parts (similar to a bayonet type assembly) which may be twisted apart, or twisted together by means of a series of interlocking projections having complimentary ramping surfaces. The co-operating pa...	09/16/1997
5557999	Method for manufacturing a tamper-indicating plastic closure A method and apparatus for manufacturing a plastic closure particularly to facilitate orientation of the closure so that a manufacturing process, such as vertical scoring, can be effected at one of at least one predetermined portion of the closure. Such o...	09/24/1996
5556114	Hydraulic expanding and contracting mandrel This invention relates to a workshop mandrel which is suitable for mounting work pieces on its cylindraceous outer surface. A cavity beneath the surface is filled with hydraulic fluid which causes the outer surface to expand when the fluid is pressurized ...	09/17/1996
5546837	Ring support assembly An apparatus for supporting a ring piece being cut from a ring-shaped structure is disclosed. The ring support member or assembly includes a bar assembly having a convex arcuate surface adapted to be disposed against and aligned with an inner circumferent...	08/20/1996
5133565	Expanding collet A collet chuck with a collet body having radially extending clamping parts with counter guiding surfaces that are cooperating with the guiding surfaces of a corresponding mandrel is provided. The guiding surfaces are formed as planar sections of the mandr...	07/28/1992
5083484	Pipe end preparation tool having improved torque reacting and clamping capabilities The present invention relates to a clamping device for clamping a mandrel to an elbow or pipe as well as to a torque-reacting device between a power unit housing and the mandrel. The torque reacting device has a pair of torque reacting keys mounted in a n...	01/28/1992
5074177	Machine tool with automatic workpiece clamping device A machine tool has a pair of rotary spindles which support opposite ends of workpiece to be machined. At least one of the spindles is driven and a ring having a plurality of arms is coaxially secured to this spindle for rotation therewith. The arms entrai...	12/24/1991
4862777	Method and apparatus for forming surfaces on piston rings Apparatus is described for machining the exterior peripheral surface of piston rings for internal combustion engines, particularly piston rings having a transverse shape other than circular, for example, oval or elliptical. A jig arrangement usable with t...	09/05/1989
4813313	Apparatus for demolishing a reactor shield wall The invention relates to an apparatus for demolishing a reactor shield wall. The apparatus has a pillar (2) extending from the top side of the reactor toward the bottom of the reactor, an upper support device (3) for supporting the upper portion of the pi...	03/21/1989
4811639	Drive bar attachment for threading machines An attachment is disclosed for use with a power driven threading machine of the character having a tubular workpiece receiving spindle carrying jaw assemblies which engage and disengage a workpiece in the spindle. During a threading operation, the jaws en...	03/14/1989
4720114	Roller mandrell chuck This invention relates to a ball-type chucking mandrel having several chucking balls that are arranged in an evenly distributed manner in the chucking area. These chucking balls are held in a uniform axial position by means of a contact shoulder. In addit...	01/19/1988
4677792	Clamping or chucking system for a grinding wheel or disk A radially expansible thin-walled expansion sleeve (13) is expansible under hydraulic pressure by pressing a piston element (17) against hydraulic fluid in a chamber, upon operation of a threaded bolt (18) in a threaded bore (19) in the spindle (11) or an...	07/07/1987
4614136	Angularly adjustable mandrel assembly A mandrel assembly is disclosed for use in a portable lathe apparatus for machining the end face of a hollow workpiece. The mandrel supports an orbiting cutting tool which machines the end face and defines a cutting plane. The angle of the longitudinal ax...	09/30/1986
4541465	Expandable woodturning chuck The present invention relates to an expandable chuck for faceplate woodturning. The chuck is of simple construction for attachment to a conventional faceplate. A frusto-conical plug drawn towards the faceplate expands a radially segmented annular member. ...	09/17/1985
4519620	Core chuck with resilient rollers A torque-transmitting chuck comprising an interior member having a longitudinal axis and exterior circumferentially-spaced, longitudinally-extending camming surfaces. A generally axially-extending, circular in cross-section roller engages each of the camm...	05/28/1985
4416459	Collet chuck for splined workpieces A chuck for splined workpieces includes at least two collets, the resilient fingers of which are circumferentially interdigitally related. The work-engaging surfaces of circumferentially adjacent fingers of the chuck are spaced apart a distance at least s...	11/22/1983
4373411	Expansible mandrel An expansible mandrel for loading and unloading a work member while the mandrel is rotating, comprises a frame having an abutment and a mandrel body slidable in the frame. Two slide members are mounted for radial movement within first recesses in the body...	02/15/1983
4366735	Workpiece holding device A workpiece holding device having an expandable mandrel for engaging a bore of the workpiece is disclosed. The holding device includes an expandable sleeve of generally cylindrical shape having a thin outer shell with a pair of opposed thick wall circular...	01/04/1983
4358843	Spindle for centering a data disk A spindle construction for centering a disk hub in which the spindle includes a circumferential slot extending in the direction of the rotation axis of the shaft. The slot defines one or more fingers which compress inwardly when a hub is placed over the s...	11/09/1982
4300419	Holder for annular workpieces A workpiece holder for the centered holding of annular workpieces, for working one of the circumferential faces of the workpieces, the holder including a basic element having a generally cylindrical support surface, a plurality of segments which are distr...	11/17/1981
4285528	Chuck assembly A chuck assembly includes a plurality of locking keys disposed within longitudinally extending grooves in an outside surface of an arbor and arranged to centrally locate and clamp a hollow work piece to a spindle....	08/25/1981
4284283	Expansible chuck A chuck having a plurality of elastic and resilient compressible segments which have the general shape of a strip which, in longitudinal section, have a zig-zag configuration with flattened tops and bottoms, with upper and lower recesses which are filled ...	08/18/1981
4244248	Method and apparatus for setting up tools, work pieces and similar on a rotatable spindle The invention relates to a method and an apparatus for setting up tools, work pieces and similar (11, 12, 19) on a rotatable spindle (10) by means of a clamp bushing comprising a double walled sleeve (2, 3) which is closed at both ends and which has at on...	01/13/1981
4201394	Collet chuck A collet chuck for gripping a workpiece around the internal diameter thereof having a collet sleeve expanded and contracted by axial movement over a tapered nose cone at the forward end of a collet expander. The collet sleeve is connected by a plurality o...	05/06/1980
4198066	Expandable arbor for holding a stack of elements An arbor is provided with a series of expandable collets for clamping a series of workpieces or other elements. The collets are designed with a variable force requirement for effecting expansion, and this assures sequential clamping of a series of workpie...	04/15/1980
4185526	Holder for circular fabric cutter The branches of a furcated cylinder are splayed by a tapered plug inserted therebetween. To securely hold a circular fabric cutter in concentricity with the cylinder, the branches or fingers are placed within the cutter and then driven apart by further in...	01/29/1980
4172399	Method and apparatus for slitting rolled material Method and apparatus for slitting rolled material. The material is mounted adjacent to a slitting means which is oscillated substantially tangential to the surface of the rolled material being slit to improve the slitting action. Radially adjustable clamp...	10/30/1979
4121847	Collet chuck A collet chuck has a sleeve which is resiliently flexible radially and provided with two axially spaced work-gripping surfaces and two axially spaced conical surfaces on its outer and inner peripheries, respectively. In response to axial movement of an ac...	10/24/1978
4106784	Finisher's mandrel A mandrel for holding a generally tubular workpiece comprising a body section and a tubular member coupled to the body section. The tubular member is resiliently deformable in a radial direction. An expander is provided within the tubular member to resili...	08/15/1978
4088332	Internal expanding collet clamp Internal expanding collet clamp, wherein collet elements are moved axially over a cone to be expanded within a workpiece. The collet elements are fully supported when expanded. The clamp is actuated by a drawbar in the usual manner....	05/09/1978
4066270	Nipple chuck Pipe chucking apparatus comprises: A. a tubular mandrel, B. driver means to engage the exterior of the mandrel and rotate same, C. a work pipe to be rotated relative to a forming tool, D. jaws on the mandrel and releasably coupled to the bore of the work pipe, E. actuat...	01/03/1978
4045038	Hollow core chucking device The chucking device of the present invention comprises a tapered chuck plug with an elongated slot formed in the tapered end thereof into which a pair of core engaging chuck dogs are mounted. The chuck dogs are normally spring biased into a retracted posi...	08/30/1977

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Class 82/169 - Expansible