A paper handling system for air mediated transport of sheets or pages of paper is disclosed. Microelectromechanical valves and sensors are embedded in a dielectric substrate for tracking and controlling paper transport. These microelectromechanical systems can be batch fabricated using resin impregnated dielectric laminates having photolithographically formed circuitry for electrical connections. Use of high speed sensor and valve control systems permit dynamic adjustments to paper trajectory du...

A rotary table lockdown apparatus made a part of a computer controlled dicing saw holds a table work surface parallel to a reference surface independent of axial misalignment and without rotational movement. The apparatus includes a deflectable disk rotor radially extended from the table within a plane parallel to the reference surface. A piston styled plunger is biased against a top surface of the rotor forcing it into frictional contact with the reference surface for holding the table and thus...

A vertical multiple-spindle machine relating to metal cutting machines. This machine comprises a stationary column on which is installed a rotary worktable mounting hydraulic clamping devices and provided with fluid inlet ducts. The stationary column is provided with passages for feeding fluid medium to he hydraulic clamping devices through said ducts, with the worktable in a fixed position. The column is also provided with a circular groove which is arranged to communicate with the fluid source...

An auxiliary table is provided for use in combination with a machine tool having a horizontal table and a spindle mounted for moving vertically relative to the table. The auxiliary table includes a circular table top rotatably mounted to the top of a support pedestal. A plurality of fixtures and/or jigs are mounted to the table top in an outer, annular area thereof and the auxiliary table is placed such that by rotation of the top the fixtures may be selectively positioned below the machine tool...

An index table comprising a base, a table mounted about an axis for rotation on the base and means for indexing said table to bring successive stations of the table into predetermined positions. Spaced locating plates are fixed on said table at circumferentially spaced points and radially movable locking pins are provided on the base and are movable radially inwardly to engage the locating plates and lock the table relative to said base and are movable radially outwardly to disengage the table f...

Multiple full bobbins simultaneously doffed from group to group from textile machines such as draw-twisters are automatically accommodated within a bobbin storing cage in prescribed arrangements without any undesirable mutual contact of the bobbins and the apparatus carrying the cage travels intermittently along the row of spindles in order to carry out the group doffing.

A clamping jig particularly adapted for use with elongate work pieces. The jig has an elongate work face, a work stop abutment the length of the work face, a plurality of toggle clamps affixed to the work face. One or more elongate or linear work pieces to be worked are positioned on the work face and held in place by the work stop abutment. The plurality of toggle clamps may be used to either hold the work piece in place or hold one or more additional work pieces to the first work piece. The wo...

An apparatus for use in a wellbore. The apparatus includes a body and a blade assembly. The blade assembly is movable between a collapsed position whereby the expandable apparatus has a smaller outer diameter and an expanded position whereby the expandable apparatus has a larger outer diameter. The apparatus further includes a pressure activated member for selectively allowing the blade assembly to move from the closed position to the open position. A method for using the apparatus, wherein a dr...

To reduce the effect of the phase shift error originated from the mismatch of the delay units of the clock generator, we propose to add one more set of averaging amplifiers and averaging impedances, such as resistors, into the circuit of the clock generator. In the clock generator, outputs of all delay units connect to inputs of all averaging amplifiers respectively, and the averaging impedances connect the corresponding outputs of two adjacent averaging amplifiers, so as to form a closed loop. ...

Substrate processing method and apparatus are disclosed. The substrate processing apparatus includes a non-contact air bearing chuck with a vacuum preload.