An internal grinding apparatus having a grinding wheel attached to a spindle rotor radially and axially supported by electromagnetic bearings. Currents applied to the electromagnetic bearings are continuously controlled by a controlling system including a central processing unit during grinding work in order to adjust the longitudinal axis of the spindle rotor. The longitudinal axis of the spindle rotor is inclined and/or shifted at predetermined locations of the grinding wheel in a bore of a wo...

An internal valve for pressurized fluid containment vessels having vessel ports. The valve includes a valve seat associated with the vessel port and a valve member movable between a closed position against the valve seat and an open position wherein fluid can flow through the vessel port. A control chamber positioned in the vessel is connected to the valve member. A motive mechanism acting on or in the control chamber, by a control system outside of the vessel, controllably moves the valve membe...

An internal clutch for coupling a rotatable disc with either one of rotatable annular members closely surrounding different portions of the disc, wherein a number of pistons are disposed in radial cylinders formed in each portion of the disc and means are provided for selectively forcing the pistons in either portion of the disc toward the respective annular member for frictional engagement thereof with the disc.

The internal gear is a bottomed cylindrical component, which has the boss portion fitted over the outer circumferential surface of the shaft, the disk-shaped flange portion extending radially outwardly from the boss portion, and the cylindrical gear body having a tooth portion in its inner circumferential surface and connecting integrally to the outer circumferential part of the flange portion. The flange portion is virtually conical on its outer side surface and tapered from the outer diameter ...

An internal planar antenna for small radio apparatuses. The ground plane (310) of the planar antenna is shaped such that it improves the matching of the antenna. The shaping may be done by means of one or more slots (315, 316) in the ground plane. The slot suitably changes the electrical length of the ground plane as viewed from the short-circuit point (S) so that the ground plane will function as a radiator in an operating band of the antenna. Also the slot (331) in the ground plane can be arra...

An antenna includes a substrate having a pair of oppositely directed surfaces. A source plane conductor is located on one of the surfaces and has a signal line connected thereto. A ground plane conductor is located on another of the surfaces. Each of the conductors has a slot extending therethrough with the slots sized and positioned relative to one another to inhibit the intensity of radiation emanating from the ground plane.

A jigging device, for example, for positioning parts to facilitate assembly line procedures. The jigging device maintains a first element (10) in a desired spatial relationship with a second element (12). The jigging device has a first fastening means comprising fastener (20) which is connected to the first element (10). The jigging device also has a second fastening means comprising fastener insert (14) together with adjustable capsule (18). Locking pin (22) locks fastener (20) to the adjustabl...

An internal shim used to accurately measure spaces in conjunction with a standard small probe has a shim top and a chassis. The internal shim is adjustably fixed within the space to be measured using grippers that emerge from the chassis and which are controlled by an arm pivotably attached to the shim top. A standard small probe passes through the shim along guides on the chassis and measures the distance between the exterior of the chassis and the boundary. By summing the measurements on each ...

An internal continuous mixer with parallel mixing rotors and a screw controlled discharge. Each rotor comprises a central bladed mixing portion, a screw infeed portion and a screw outfeed portion. The threads of the screw outfeed portion have nonuniform crest diameter thus working the material being mixed, and providing clearance permitting the material discharge rate to be controlled down stream therefrom as by an enclosed material conveyor or feed screw, preferably a screw extruder apparatus.

A grinding machine having a plurality of relatively movable tables one supporting another which is movable obliquely to the path of travel of the supporting table and mounting a plurality of driven grinders thereon. A second plurality of tables one supporting another and relatively movable. The supported table of the second plurality mounts a work holder for supporting a workpiece. The supporting table of each plurality of tables is movable relative to the base of the machine. Drive apparatus ar...