Abstract: A process is for producing a semiconductor wafer with a front surface and a back surface, in which the semiconductor wafer is subjected to two-sided polishing. The process includes the following: (a) producing a hydrophobic surface on the semiconductor wafer by treating the semiconductor wafer with an aqueous HF solution; (b) simultaneous polishing of the front surface and the back surface of the semiconductor wafer with a surface which has been rendered hydrophobic, with an alkaline polishing abrasive being continuously supplied between two rotating upper and lower polishing plates, which are both covered with a polishing cloth, the pH of the polishing abrasive being from pH 8.5 to pH 12.5; (c) after an intended polishing abrasion has been reached, supplying a stopping agent to the semiconductor wafer; and (d) removing the semiconductor wafer from the polishing plates.

Abstract: The stuffing tool transports and packs stuffing material into cavities of fabric dolls, animals, pillows, or other creations. The three sections of the stuffing tool are: the handle (20), the shaft (30), and the tip section (40).The handle (20) is made of a rigid material and is attached to the shaft (30) in the normal position of handles.The shaft (30) is made from a rigid material and is long enough to reach into the normal cavities of fabric dolls, animals, pillows, or other creations.The tip section (40) is made from a rigid material. The tip section (40) has a series of fluted ridges (40A) which extend outward from the shaft (30), grooves (40B), and a counter-sunk hole (40C) to allow it to grab the stuffing material and transport it to the interior of the cavity.The stuffing tool is made in several sizes and finishes.

Abstract: A two honing process eliminates the need for subsequent brush honing at another location. The honing process which is accomplished with a single head uses rough honing stones or tools for the initial phase, and finishing tools of tightly compacted abrasive containing plastic monofilaments for the second phase. The phases may be contiguous, slightly spaced, or preferably overlap for up to about one-half of the rough honing phase. When the finishing honing tools are operating alone, the angle of movement of the tools is somewhat askew of the oil retaining ridges and grooves formed by the rough honing operation. With the process, the oil bearing surfaces have improvements in plateau finish and surface topography, avoid abrasive contamination caused by hard finishing tools, and obtain such improvements in a more economic manner.

Abstract: The deadfold reclosure sticker for hand pressure application to a bag has a flexible backing liner with a low adhesion surface. On the liner is a flexible deadfold reclosure sticker having a pressure-sensitive adhesive layer forming a base surface releasably adhered to the low adhesion surface of the liner. The sticker comprises a laminate of pliable layers and at least two deadfold wires having a thickness at least twice as great as the laminate. The wires are in spaced parallel alignment and are embedded along their length in the laminate with the ends of said wires exposed to view. The flexible backing liner has a structural feature for easy removal of it for hand application of it onto a flexible bag to form a deadfold reclosable bag easily reclosed by simple folding steps.

Abstract: A microfinishing arm assembly for reducing taper on selected bearing journal surfaces of various workpieces rotated about a longitudinal axis. The microfinishing arm assembly includes a primary finishing arm and a taper correction means for applying a plurality of adjacent independently variable grinding pressures. A primary abrasive means for finishing a journal surface is mountable on the primary finishing arm and adapted for use in cooperation with the taper correction means. A measuring means for gauging the bearing journal surfaces at a plurality of spaced points during rotation is utilized with a processor means for receiving the gauging signals, calculating diameters of the journal surfaces and generating a plurality of output signals corresponding to the diameters of the bearing surfaces at spaced points.

Abstract: An apparatus for producing containers made of paper-base laminate, the apparatus comprising: an intermittently drivable rotor 42 having radial mandrels 43 each adapted to support a tubular container blank of square to rectangular cross section as fitted therearound, the mandrels 43 being so arranged as to successively stop at each of processing stations I to VI including a pressure bonding station V, and a bottom bonding unit 48 disposed at the pressure bonding station V, each of the mandrels 43 having in a forward end face 54 thereof a groove 55 for forming the recess 36, the bottom bonding unit 48 comprising a bonding member 52 having a pressing face 56, the pressing face 56 being opposed to the forward end face 54 of the mandrel 43 as stopped at the pressure bonding station V, the pressing face 56 being provided with a ridge 57 corresponding to the groove 55.

Abstract: In order to be able to sand the surface of an item (3) uniformly smooth, a sanding machine is used with sanding tools in the form of sanding rollers (29) which are rotated as well as turned in the same plane, and which at the same time herewith are also moved in a reciprocating manner transversely to and parallel with the direction in which the item is conveyed, whereby during the working stroke the sanding elements on the sanding rollers (29) will sand at all possible contact angles in relation to the item (3). The risk of sanding damage such as marks and grooves as a result of over-sanding, or the possible lack of sanding as a result of too sporadic contact, is herewith reduced, and the best possible result is achieved.Furthermore, the wear on the sanding rollers (29) is completely uniform, whereby their endurance is extended.

Abstract: An automotive jack in which an upright leg is provided with a U-shaped cross-section and has a foot connected to an end of that leg. A supporting arm is connected to the leg at a pivot with a horizontal axis, whereby the supporting arm is pivotable about the horizontal axis. The jack is actuated through a thread and nut device which is pivotally connected to the leg and the supporting arm. The U-shaped cross-section of the leg has an open end and two sides connected by a convex base portion in the cross-section of the leg and throughout substantially the length of the leg when viewed from outside the leg.

Abstract: A portable power tool has, in order to drive a tool (12), a hollow spindle (14) to which the tool (12) can be fastened between two flanges (16, 18). The outer flange (16) is configured at the end of a clamping bolt (22) that is inserted through a central opening (17) of the tool (12) and projects at its other end out of the housing (42). The clamping bolt (22) can be non-rotatably secured at this end by means of a retaining element (20). For actuation, a clamping device (24) is provided, which can be moved, against the force of spring elements (26), between a clamped position in which the retaining element (20) is acted upon axially to clamp the tool (12), and a released position in which the tool is disengaged for manual changing. The spring elements (26) are arranged between an axial fixed stop (28) and an axially displaceable stop (FIG. 1).

Abstract: A vise for holding an object, such as a snow ski or water ski, in a relatively fixed position includes first, second and third support members mountable on a support surface, a plurality of rods supported in spaced parallel relation by the support members, first and second mounting members carried on the rods and first and second jaws removably mounted on the respective first and second mounting members. One of the rods is a rotatable rods having an external threaded surface. A handle is located at one end of the rotatable rod to facilitate the rotation thereof. Each of the amounting members has a plurality of bores for accommodating the passage of the respective rods therethrough.

Abstract: A method of lifting storage tanks by using pressurized bags and support members. Lifting the tank allows for visual inspection under the tank for corrosion to prevent leakage of environmentally hazardous chemicals stored in the tank. The lifting bags are placed under the tank, inflated, and support timbers placed under the raised tank. The bags are then deflated allowing the tank to rest on the support timbers. The deflated bags are raised by placing support timbers under the bags. The bags are again pressurized further raising the tank. The steps are repeated until the tank is lifted to the desired height. Ground suction is broken by raising one side of the tank with the lifting bags, placing supports as far as possible under the tank rim and depressurizing the bags to rock the other side of the tank off the ground. A fulcrum method is also applied to use the partial weight of the tank as a leverage force to alternately raise opposite sides of the tank.

Abstract: A stabilized flexible container for receiving flowable materials includes a top wall, a bottom wall, and a perimeter wall formed from four double layered side walls seamed together along adjacent side edges. The exterior layer of the double layered side walls is greater in length than the interior layer and is folded inwardly upon itself and stitched along the side edges to form a pocket in a space between the interior and exterior layers of the double layered side wall with the side edges of the exterior layer in the pocket region being free from the seam connecting the adjacent side walls. The interior layers of the side walls are seamed together in the pocket region and are seamed along their bottom edges to the perimeter of the bottom wall. Rigid panels are inserted into the space between the interior and exterior layers of the side walls and are secured in the pocket to prevent the rigid panels from slipping out of the side walls.

Abstract: A device for the extraction of fence posts having a T-shaped cross-section. The device is arranged to engage the fence post in a frictional binding action on the post when tilted by the upward application of force to one end of the device. The upward application of force is derived through cooperation with a jack, whereby the tilting of the device secures the device in position with the fence post and transfers the upward force from the jack through the device to the fence post. The tilting of the device also secures the jack to the device, thereby ensuring cooperation between the jack, the fence post, and the device throughout the full length of the lifting stroke.

Abstract: This invention is a new high wheel speed grinding process that uses only one very hard grade resin bonded grinding wheel of the desired abrasive grit size for the surface finish required, where simultaneously with the grinding of a workpiece the wheel face is conditioned and trued by a truing element heated to a temperature between 250.degree. F. and 1200.degree. F. at the truing rates required to provide grinding at quantitatively predictable desired and constant unit volume energy and metal removal rate values. Because of the hard grade wheel specification, the wheel face would quickly revert under any job situation to a dull wheel face without this conditioning and truing. Under any forseeable job situation, conjoint control of the temperature of the truing element and the truing rate controls wheel wear rate.

Abstract: A backing pad be used in a holding jig for holding a semiconductor wafer in the step of mirror polishing comprises a hydrophobic foam, possessed rigidity such that the difference between the thickness T.sub.1, thereof under a load of 300 gf/cm.sup.2 and the thickness, T.sub.2, thereof under a load of 1,800 gf/cm.sup.2 (T.sub.1 -T.sub.2) is in the range of from 1 to 100 .mu.m, and has holes formed therein in a diameter in the range of 10 to 30 .mu.m through the wafer-holding surface thereof.The polishing of a semiconductor is effected by a method which comprises preparing a finished backing pad by the precision surface machining operation, setting the semiconductor wafer on a wafer holding jig having a template containing at least one wafer-positioning hole fixed on a carrier plate in such a manner that the backing pad enters the positioning hole, and polishing the semiconductor wafer.

Abstract: This invention is directed to an ultrasonic machine and its method of operation. The machine has a main shaft rotatably supported in a housing, a machining head attached to one end of the main shaft, a piezoelectric transducer provided on the machining head, and a tool attached to an end of the machining head. The machine also includes slip rings provided on the periphery of either the machining head or the main shaft as an input terminal, brushes being in slidable touch with the slip rings and connected to a power source, and a brush detach apparatus for detaching the brushes from the slip rings to reduce friction and disconnect ultrasonic operation. The tool is rotated and pressed onto the work, hence starting a boring operation. After the rotation forms a pre-determined depth of a bore, the tool is ultrasonically vibrated to bore further into the work. The method and apparatus are particularly suited to boring small holes in ceramics and the like.

Abstract: Phosphate ceramic backing blocks are provided for the profile sanding of wood. The blocks are made of rigid, non-foamed phosphate ceramic. The ceramic is dimensionally stable in spite of friction-caused heat, and also has a semi-polished finish that is achieved without polishing. The phosphate ceramic block is simply made by molding the wet reaction mixture for the ceramic, and then curing the ceramic mixture.

Abstract: An optical glass fiber polishing apparatus and method utilizing a slurry prised of water, CeO, glycerin and where needed, a base such as NaOH, to realize transmission loss in the fiber as it is polished towards the fiber core. The intensity of light introduced at one end of the fiber is measured at the opposite end, continuously and without interruption of the polishing, to determine polishing progress through the cladding towards the core.

Abstract: A fluid circuit for a work handling apparatus having a suction holder adapted to be selectively communicated with a vacuum source and a compressed air source, an having a first electromagnetic valve having first, second and third ports which are fluid-connected with the vacuum source, the compressed air source and the suction holder, respectively. The first electromagnetic valve is operable, when in a suction position, to communicate the first and third ports with each other and, when in a release position, to communicate said second and third ports with each other. The fluid circuit also has a first passage communicating the suction holder and the third port of the first electromagnetic valve with each other, a pressure sensor, a second electromagnetic valve operable to selectively establish and open a fluid circuit between the pressure sensor and the first passage.

Abstract: An opposed double-disc abrasive deburring apparatus designed for simultaneous deburring of both major surfaces of workpieces. The abrasive material is carried in opposed double-disc counter-rotating abrasive media retaining pads, with the workpieces being carried through the pads on a turntable having workpiece receiving and guiding bores formed therein.