Class 279/4.04 - Pneumatic type

Subclass of Class 279 - Chucks or sockets
Definition: A device wherein the fluid is a gas.
No. of patents: 31
Last issue date: 05/06/2008

Number	Title	Issue Date
7367238	Test apparatus using a pneumatic collet and method to clamp a bar A pneumatic collet assembly has a housing, a piston, a collet, and ball bearings. The piston is disposed within the housing. A bore within the piston receives the collet. The collet has a base and fingers. The fingers of the collet define a center channel or bore co...	05/06/2008
7185573	Vacuum wheel chuck A wheel chuck assembly includes a support plate having at least one aperture formed therethrough. The support plate is adapted to be mounted upon a lathe spindle. An air conveying device is mounted adjacent to the support plate and is operable to induce an air flow ...	03/06/2007
7128817	Feed belt for strip-shaped elements A feed belt for strip-shaped elements includes a belt body and a plurality of fingers, the fingers being previously fabricated and coupled to the belt body at constant pitches. The belt body includes fitting openings and slits formed at one side of the fitting openi...	10/31/2006
6674041	Sintered holder for a workpiece or tool A holder for a workpiece or tool, in the surface of which a plurality of grooves with substantially planar flanks are made, the opposing edges of which, formed on the surface, have a predetermined spacing, wherein the holder consists of a sintered materia...	01/06/2004
6491304	Cylinder having guide In a cylinder having a piston 2 and a cylinder body 3 having a piston chamber 4 in which said piston 2 is slidably accommodated, a guide shaft 9 extending toward the piston chamber 4 is provided on a head-side end wall 8 of the cylinder body 3, and the pi...	12/10/2002
6478310	Combination pneumatic chuck with position detecting mechanism A stroke first air cylinder mechanism having a larger-diameter first piston and a larger-diameter first rod is incorporated in a casing, a chuck second air cylinder mechanism having a smaller-diameter second piston and a smaller-diameter second piston and...	11/12/2002
6270084	Pneumatic chuck assembly A rotary chuck having a chuck body supporting a plurality of clamping jaws for movement between open and closed positions and defining a cylindrical piston chamber containing an axially movable double acting piston coupled to a jaw actuator. A plurality o...	08/07/2001
6144123	Electric chuck An electric chuck constituted by an electric motor coupled to a chuck in which the rotating tool is engaged; the electric motor being provided with a cooling device for the rotor located within the interior of the casing of the electric motor; the cooling...	11/07/2000
6074140	Quick-release chuck assembly A handheld rotary power unit includes a housing with a handle and a distal end portion, a motor shaft extending through the distal end portion of the housing, and a quick-release chuck assembly connected to the motor shaft. An actuator assembly is provide...	06/13/2000
5944326	Linear guide air chuck Pinching of the fingers of an air chuck is prevented during opening or closing in order to allow them to open or close smoothly and to miniaturize the air chuck. In a linear guide air chuck having a rod that is operated by an air cylinder mechanism; a pai...	08/31/1999
5909882	Pneumatic driven automatic chuck A pneumatically driven chuck for clamping and unclamping a tool holder of a machine tool, especially an electric discharge machine, said chuck including a mechanical clamp for clamping said tool holder, a first air chamber for receiving opening air for re...	06/08/1999
5906378	Coupling adapter A coupling adapter (1) for positioning a tool (90) in a particular given position with high repetitive precision on a chuck (80) that can be activated by a medium for a machine tool. The chuck (80) is equipped with elements (52, 54, 82, 55, 57, 58) of a f...	05/25/1999
5746436	Air pressurized chuck An air pressurized chuck has a spindle journalled in a housing for rotation about a longitudinal axis. One means is mounted in a penultimate portion of the spindle and rotatable therewith for longitudinally reciprocating along the axis in one direction in...	05/05/1998
5743687	Fourth axis fixture quick change A quick fixture changing apparatus for the fourth axis turn table of a machine tool. A pneumatic servomechanism exerts force on a drawbar, which is releasably attached to the fixture plate. The drawbar passes through the central opening of the turn table,...	04/28/1998
5513860	Arrangement for clamping a bar of material The invention concerns an arrangement for clamping a bar of material. Such arrangement includes: clamping jaws (MS, MS') guided in a radial direction relative to the bar and adapted to take up two distinctive radial positions referred to as closed and ope...	05/07/1996
5249815	Collet clamping mechanism A collet clamping mechanism having a sleeve with shoulders thereon, and an actuator for forcing against the shoulders for clamping a workpiece in the collet....	10/05/1993
5178401	Rotatable chuck for glass tubes Chucks for glass tubes should be designed so that, on the one hand, they grasp the glass tube gently so that the tube is not destroyed, and, on the other hand, so that they hold it securely enough so that a proper processing of the glass tube is possible....	01/12/1993
5110146	Collet clamping and releasing yoke apparatus A collet clamp and releasing yoke apparatus having a support block and a cylindrical sleeve for receiving a collet. The collet is axially fixed, and the sleeve moves for contracting the collet to clamp a workpiece therein, and a yoke is employed for the c...	05/05/1992
4861086	Apparatus for taking up and depositing spools An apparatus for automatically taking up and depositing spools consists of a circular cylindrical body having several radially displaceable claws which can be operated by compressed air uniformly distributed over its cylindrical external surface, which cl...	08/29/1989
4790699	Air feed tube assembly for a pneumatic chuck A rotary coaxial air feed tube assembly for a pneumatic chuck with one end of the assembly screw coupled to the chuck and the other end of the assembly being coupled to a rotary air feed joint, keying means being provided for coupling the feed tube assemb...	12/13/1988
4779877	Wafer support assembly An assembly is provided for supporting semiconductor wafers individually within a support while permitting processing of both faces of a wafer as well as facilitating rapid insertion and removal of wafers into the support. Each assembly includes a wire cl...	10/25/1988
4762447	Dual-plane high-speed collet The collet includes a compressible basket having a central opening to receive a tool shank and two exterior surfaces tapering in opposite directions. One tapered exterior surface engages a matching tapered interior surface of a hollow rotatable shaft that...	08/09/1988
4745674	Tool holder in machining center A tool holder in a machining center comprising a basic tool holder provided with a tapered fitting hole formed on the nose portion and a small tool having its tapered fitting portion fitted detachably in the tapered fitting hole, wherein a plurality of gu...	05/24/1988
4723778	Automatic lubricating system of power chuck A machine-tool power chuck operated by pressurized gas supplied from an gas pressurizing source has a piston-cylinder actuator having a piston dividing the piston chamber into a rear pushing side and a front pulling side. When the pressurized gas is suppl...	02/09/1988
4591171	Seal for air charging a chuck Means are provided to introduce pressurized fluid from a source into an intermittently rotated machine tool such as a chuck while the tool is stationary. The means includes a stationary annular shell surrounding a portion of the tool and radially spaced a...	05/27/1986
4512072	Apparatus for installing poultry feather picking fingers Apparatus for seating resilient fingers of a poultry feather picking machine has a housing 30 in which a sleeve 54 is reciprocally mounted that carries collet camming means 55. A collet 57 is slidably mounted in the sleeve 54 which has an annular array of...	04/23/1985
4509298	Pneumatic clamp mounting for a disc Pneumatically operated clamping apparatus provides free floating mounting of a disc upon a shaft during grinding and polishing of the disc....	04/09/1985
4391451	Expansible chuck assembly An air-mechanical expanding chuck for supporting a core for winding webs. A cylindrical chuck body defines a chamber which contains a piston with its piston rod extending out of the chamber for insertion into the core. The piston rod forms a tapered arbor...	07/05/1983
4306731	Wafer support assembly An assembly is provided for protectively supporting semiconductor wafers individually within a support while permitting processing of both faces of the wafer, as well as facilitating rapid insertion and removal of wafers into the support, and movement of ...	12/22/1981
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
4155563	Apparatus for applying high torque levels A novel collet and chuck are disclosed for applying high levels of torque to an article having substantially circular cross-sections about a common axis and sloping sides, such that it cannot be readily gripped by conventional chucks without marring the e...	05/22/1979

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Class 279/4.04 - Pneumatic type