Class 279/2.07 - Directly expanding jaws

Subclass of Class 279 - Chucks or sockets
Definition: A device wherein the means for making the connection is
No. of patents: 36
Last issue date: 12/25/2007

Number	Title	Issue Date
7311312	Chuck drawing a work against the chuck-face A chuck body is made up of axially movable plungers and jaws, in which the jaw has a master jaw body obliquely arranged with respect to an axis of the chuck body, the jaw also has a front face of the master jaw body and a rear end face of a master jaw head for restr...	12/25/2007
7261302	Collet and lock nut assembly A collet and lock nut assembly includes a collet for receiving a cutting tool shank and a lock nut for creating a gripping force between the collet and the shank. The collet has a nose portion and a body portion separated by an annular groove. The lock nut has a plu...	08/28/2007
7147232	Workpiece holder A workholding apparatus including a body and a drive member carried by the body, so that the drive member and body partially define a fluid chamber therebetween for containing a fluid. A driven member is also carried by the body and includes multiple displacement re...	12/12/2006
7059457	Expansion motor The present invention is a unique motor comprising a containment chamber having thick walls surrounding a thin wall, is created when a plug is fusible joined. An inlet port and preferably a purging port are located in the thick walls. A motion is created when said e...	06/13/2006
6938903	Tool holder for a tool, especially a boring, milling or grinding tool, which can be rotated about a rotational axis The invention relates to a tool holder for receiving a tool, especially a boring, milling, or grinding tool, which can be rotated about a rotational axis and which comprises a clamping shank. In a preferred form of embodiment, said clamping shank comprises a receivi...	09/06/2005
6908085	Rotating tool chucking device A Chucking device comprising a collet with an external taper and a collet holder with a taper socket for the chucking of a rotating part, wherein the taper socket of the collet holder and the external taper of the collet have a taper angle which is smaller than the ...	06/21/2005
6182977	Clamping device The clamping apparatus (10) has a clamping ring (13) of an elastomer, which has a U-shaped cross section. The clamping ring (13) is seated in a recess (15) in a holding device (12) having parallel side walls. The recess (50) can be connected via a connect...	02/06/2001
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
6059218	Airlock shaft with differential core speed slipping capability An expandable airlock shaft with surface mounted roller bearings provides differential core speed slipping capability for adjacent core segments on a common shaft. The shaft may be used with an expandable collet system consisting of a set of relatively sh...	05/09/2000
6015154	Large displacement hydrostatic workpiece holder A hydrostatic tool holder having a displaceable metal sleeve formed with a plurality of circumferentially spaced and longitudinally extending slots and a flexible, polymeric ring defining at least in part a fluid chamber to separate the fluid in the chamb...	01/18/2000
5951023	Air chuck An air chuck includes a central core having a central portion, an enlarged end flange at a first end, a sloped transition section between the central portion and the enlarged end flange and having an outer inclined surface at a first inclination angle of ...	09/14/1999
5803399	Expandable shaft An expandable shaft comprises: a shaft body having a central axis and an outer cylindrical surface; a fluid passageway extending along the central axis of the shaft body; fluid introducing ports radially outwardly extending and communicating with the flui...	09/08/1998
5518203	Rewinding shaft of slitting machine A rewinding shaft of a slitting machine includes a rewinding shaft having a hollow interior extending axially, the hollow interior being exposed outside at one end of the rewinding shaft; a plurality of cylinder bores formed in an outer peripheral surface...	05/21/1996
5441284	Fluid operated chuck and methods of operation Workpiece chucking apparatus includes a chuck body mounting a first plurality of prepositioning lock-up fingers and a second plurality of gripping fingers. The lock-up fingers are biased together radially outwardly or inwardly into engagement with a perip...	08/15/1995
5429375	Fluid actuated chuck with lock-up fingers for eccentric workpiece walls Workpiece chucking apparatus includes a chuck body mounting a first plurality of lock-up fingers and a second plurality of gripping fingers. The lock-up fingers are individually biased radially outward into engagement with a peripheral wall of a workpiece...	07/04/1995
5375791	Hub aligning rotary chuck A rotary chuck for winding magnetic tape aligns the winding hub in both the axial and radial directions relative to the axis of winding rotation. This allows higher winding speeds to be used and produces finished rolls of improved quality. Alignment occur...	12/27/1994
5174585	Adjustable fastening device The invention relates to an adjustable fastening device e.g. for an axially-shaped, tubular, flat or spherical tool or working piece or machine part or a like of a desired shape. The device includes: a body section (1), a clamping means (2), mounted withi...	12/29/1992
5030048	Expandable tool holding device using a fusible alloy An expandable tool holding device for holding a tool or workpiece in which the clamping force is brought about by the solidification and expansion of a fusible alloy. The alloy is contained in an expansion chamber defined in part by a thin-walled, expansi...	07/09/1991
4979853	Cutting tool holder for high speed spindle machining system A fast tool change holder is provided for holding a tool adapter onto an internally delivered coolant spindle. The holder comprises an expandable split collet which can be inserted into the tool adapter and expanded in order to hold the adapter onto the s...	12/25/1990
4953877	Fluid actuated chuck A chuck for holding an easily distortable hollow workpiece has a rigid body with axially extending co-extensive, circumferentially spaced, flexible chuck fingers carried on a mounting surface. Each of the fingers has one end axially fixed to the mounting ...	09/04/1990
4771963	Expansible mandrel with a plurality of expansion devices An expansible mandrel with a plurality of fluid pressure actuated expansion devices, the devices including an expandable pressing shoe member, an inflatable tubular bladder member cooperating with said shoe member for actuating the expansion movement ther...	09/20/1988
4767077	Support shaft for winding/unwinding sheets A support shaft for winding/unwinding sheets comprises a ring with the outer periphery thereof formed with a plurality of inclined grooves circumferentially spaced apart and with the bottoms of the inclined grooves inclined in the circumferential directio...	08/30/1988
4693431	Winding shaft for sheet rewinder A winding shaft for a sheet rewinder comprises a hollow shaft provided in its peripheral wall with through-holes, a plurality of drum rings rotatably fitted around the hollow shaft, plungers inserted one in each through-hole, support rings provided at the...	09/15/1987
4674262	Device for releasably holding a container on a feed connection piece A device for temporarily holding containers on a feed connection piece includes a plurality of expanding segments surrounding the connecting piece and being held in position thereon by a resilient sleeve. Lower parts of respective segments extend over a l...	06/23/1987
4473195	Pneumatic, expandible shaft with keys A pneumatic expandable shaft having lugs suitable for blocking bobbins mounted on the shaft is described. The shaft comprises in the interior a tube (7) made of resilient material, the tube communicating with the exterior by means of valves (6-15). The va...	09/25/1984
4436252	Tension shaft for winding frames A tension shaft for machines for winding widths of sheet material wherein the outside diameter is variable is provided. The tension shaft includes a flexible tube wound thereabout in helical fashion which may be inflated by air fed into the central portio...	03/13/1984
4387906	Tool or workpiece chucking device A chucking device for tools or workpieces having a cylindrical or slightly conical chucking surface. The chucking device includes body (1), which is provided with truncated cone-shaped surface (3), cavity (4) located inside the surface and along a substan...	06/14/1983
4317577	Rotary expandable tool with hydraulic internal intensifier A relatively high fluid pressure actuated rotary arbor or chuck having internal pressure intensifying differential pistons for converting relatively low pressure from an outside supply through a relatively low pressure non-rotating coupling connection. A ...	03/02/1982
4229014	Air-expanded mandrel having means to equalize expansion to obtain concentric chucking A fluid actuated expanding mandrel or internal chuck is provided with means including very stiff springs to cause the expanding members to move outwardly a substantially equal amount, whereby a roll or workpiece is concentrically mounted, despite loosenes...	10/21/1980
4200301	Core locking device An expandable device for locking an annular member to a shaft for rotation therewith in which an annular body mounts on the shaft and carries a plurality of radially moveable bars overlying a single wall annular bladder lying against the surface of the bo...	04/29/1980
4195792	Expandable mandrels An improved sleeve construction for mandrels of the type which grip tubular members such as paper rolls by selectively expanding a rubber or other deformable material sleeve into gripping relation with the inner wall surface of the tubular members wherein...	04/01/1980
4147312	Gas-liquid hydraulic expandable chucks and shafts A self-contained cylindrical expandable mandrel comprising a closed liquid hydraulic system pressurized by the smaller end of a piston, the larger end of which piston is compressed by a gas, such as compressed air from an outside source through a hose con...	04/03/1979
4114909	Core locking device An expandable device for locking an annular core to a shaft for rotation therewith in which an annular body mounts on the shaft and carries a plurality of radially movable bars overlying a single-wall annular bladder lying against the surface of the body....	09/19/1978
4099732	Expandable shaft An expandable shaft for the mounting of cores, working tools, and the like comprising a perforated metal shell with an internal elastomeric liner positioned therein and in intimate contact with the interior thereof, portions of the liner extending into th...	07/11/1978
4057454	Mandrel for fabricating an air spring Two embodiments of a mandrel for fabricating an air spring are disclosed. Each has a fixed diameter cylindrical portion and a portion variable in diameter to provide an extension of the cylindrical surface expandable to conic form. An array of fingers are...	11/08/1977
4050643	Expandable core-shafts A shaft for gripping the inside diameter of the cores for winding webs such as of paper, plastic films, metal foils, fabric, and the like, which shaft has integrally therein a longitudinal fluid pressure manifold duct connecting spaced radially projectabl...	09/27/1977

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Class 279/2.07 - Directly expanding jaws