Abstract: A polishing chip has its outer shape substantially the same as that of a semiconductor device, and is arranged to be mounted and dismounted to and from a semiconductor-device receiving socket (11) installed in a testing apparatus for evaluation of semiconductor devices. Distal end portions (15b) of contact pins (15) of the socket are brought in contact with an abrasive layer (22) formed in distal end portions of the polishing chip mounted to the socket, whereby distal ends of the contact pins are polished to remove foreign substances therefrom.

Abstract: A clamping device (1) is disclosed for one or several workpieces (2), especially bodywork parts. The clamping device (1) includes one or several clamps (4) which can be positioned on a clamping table. Several parts can be displaced along at least one axis. The clamps (4) comprise a positioning device (13) and a fixing device (10). The positioning device (13) has a height adjustment system (21) and/or angle adjustment system (22) and/or lateral adjustment system (4b). To allow for stepless adjustment over a wide range the positioning device (13) has a coarse adjustment system (43) and a fine adjustment system (44). The fixing device (10) can be configured as a clamping device (35) and simultaneously include the lateral adjustment system (4b).

Abstract: A processing jig of the invention is provided for deforming an object to be processed that is long in one direction into a complicated shape and processing the object with accuracy. The jig comprises: a main body to be fixed to a processing apparatus; a retainer that is long in one direction for retaining a bar as the object long in one direction; four couplers for coupling the retainer to the main body; five load application sections, coupled to the retainer, to which a load is applied for deforming the retainer; and arms for coupling the load application sections to the retainer.

Abstract: A tool is disclosed for the removal of quick release couplings from a conduit. The tool has a body that is divided into a rotatably connected gripping portion and a release portion. Handles are connected to the body to activate the clamping and releasing action of the tool. Compressing the handles causes the gripping element to compress and the gripping portion and the release portion to rotate around the connection, creating a distance between the gripping and release elements. The release element has a pair of plates with neither, one or both of the plates being movable. Preferably the top plate has a spring member that retains the top plate adjacent the lower plate, thereby enabling a conduit to snap in and be maintained between the two plates. The clamping member can have a flat surface or at least one arc, and in come embodiments, the receiving member is a mirror image of the clamping member. An optional guide can be used adjacent the clamping member to prevent side to side movement.

Abstract: The present invention is a method for constructing cylindrical grain bins. The method employs a sets of identical, telescoping jacks actuated by hydraulic cylinders and an hydraulic system having separate hydraulic circuits that serve each set of jacks. Using the set of identical, hydraulic, telescoping jacks, successive rings of a grain bin structure made up of connected panels are lifted. After a first ring is lifted, a second ring can be attached to the lower edge of the first ring. The second ring is then lifted and the process is repeated until the grain bin is completed.

Abstract: Accessories for an angle grinder include a disposable rotary sanding disk having quite large shaped ventilating/viewing apertures, for use with a resilient backing plate also having shaped ventilating apertures. The apertures of one or both parts are shaped so that snagging of the apertures on projections from the work surface is minimized and to facilitate air flow across the work surface during use. This air flow helps in cooling the work and ejecting detritus, so minimising clogging effects. The ventilating apertures also facilitate viewing the work to be sanded through the spinning disk during the abrasion process, so that operator feedback is immediate. The holes also give the sanding disk more resilience so that a greater area comes in contact with the work and the disk wears more evenly over its abrasive surface.

Abstract: The invention relates to a process for the production of a clamping means for clamping a component (20) in a holder (16), especially for the production of moulding tools for the manufacture of precision articles. Spring-action clamping elements (72), for example tightening discs or clamping sleeves (72), are inserted into a recess of the holder (16) and final working thereof takes place in a position that corresponds to the subsequent position when the component (20) to be clamped is clamped. With this process, very good centricity and coaxiality of the clamped components (20) is achieved, whereby the manufacturing tolerances to be maintained for the individual components are not critical.

Abstract: A head support rest 29 is provided with machine bodies 21, 25 being movable and drivable in a horizontal direction, being free to go up and down. One or more absorption means aggregates 550 are provided with the head support rest 29, being free to move and position in a horizontal two-dimensional direction through a horizontal direction moving structure 33, 35, 36, 47, 49, 51 and 52. The absorption means aggregate 550 has a plurality of absorption means 55 provided such that absorption portions 57 are adjacent to one another. Absorption driving means 60, 62, 63, 65 are connected with each of absorption means 55. Then, a fine workpiece having complex shape can be also appropriately absorbed and carried.

Abstract: A clamping tool holds a workpiece in place on a surface, for example in a machine tool, by a clamping bolt (2) which is moved into a workpiece contacting position by a locking piston (6). The bolt (2) and the piston (6) are slidable in respective bores (3, 4) in a housing (1) in which the clamping bolt (2) is locked in a workpiece supporting position by the locking piston (5, 6). For this purpose the locking piston (6) has a piston rod (5) with a wedging incline (8) cooperating with a respective wedging incline (2′) at an inner end of the clamping bolt (2). A tongue and groove combination is provided between the piston rod (5) and the inner end of the clamping bolt to facilitate the cooperation and force transmission between the piston rod (5) and the clamping bolt (2). A self-locking effect holds the locking piston in a working position until the self-locking effect is released.

Abstract: A retarding mechanism for a grinding machine which is an improvement on a prior patent application, and comprises a body and a grinding member. Wherein, the body is fixedly provided with an annular plane plate encircling an output axle thereof, the grinding member is fixedly provided with a fixing seat on the rear surface thereof, the retarding mechanism is characterized by that: the fixing seat is provided with a plurality of peripheral abrasive members which are arciform raised portions to render the abrasive members more solid and resistive to grinding and contactable with the plane plate in larger area. Therefore, during rotation of the grinding member, the abrasive members can provide a better structure to get larger friction force with the plane plate to endue the grinding member with a desired retarding effect.

Abstract: A hand tool for use in removing a pintle from a door hinge, comprising a rigid, barrel with a slotted aperture enclosing a push rod affixed to a base adapted to thrust the pintle out of a door hinge when the tool is placed against the door hinge pintle and struck with a blunt object. A viewing window is defined by the barrel for providing proper visual alignment and placement of the push rod against the door hinge pintle. The base includes a notch for use in removing hinge pintle caps.

Abstract: A method for cutting a glass reflector and a glass reflector produced by a cutting process. The method typically includes forming a fluid jet by ejecting a mixture of fluid and abrasive at an initial pressure, creating a pierce hole in the glass reflector with the fluid jet at the initial pressure, and cutting a ventilation hole in the glass reflector by moving the fluid jet from the pierce hole along a cutting path. The method may also include, after cutting the pierce hole and before cutting the ventilation hole, raising the pressure of the fluid jet from the initial pressure to an increased pressure.

Abstract: The invention relates to an apparatus for lifting a substrate from a surface of a chuck subsequent to a processing step. The apparatus includes a perimeter pin for lifting the substrate from the surface of the chuck to a first position wherein the substrate is disposed on the perimeter pin during lifting. The perimeter pin is configured to overcome a holding force at an interface of the substrate and the surface. Generally, the holding force is generated between the substrate and the surface during the processing step. The apparatus further includes a center pin for moving the substrate from the first position to a second position wherein the substrate is disposed on the center pin during moving. The second position is further away from the surface of the chuck than the first position.

Abstract: The invention relates to a vacuum tightening system comprising a supporting base and a modular suction device for tightening a work piece. According to the invention, the modular suction device and the work piece can be tightened by means of a vacuum circuit in which the vacuum pressure is increased for tightening the work piece.

Abstract: The present invention is a lifting system that can be used to construct cylindrical grain bins. It includes sets of identical, telescoping jacks actuated by hydraulic cylinders and an hydraulic system having separate hydraulic circuits that serve each set of jacks. The separate hydraulic circuits include identical pumps and control valves. The pumps and the control valves can be operated in unison to supply equal amounts of hydraulic fluid to the sets of jacks so that all of the jacks may be raised or lowered in unison. The lifting system can be used to uniformly lift successive rings of a grain bin structure made up of connected panels. After a first ring is lifted, a second ring can be attached to the lower edge of the first ring. The second ring is then lifted and the process is repeated until the grain bin is completed.

Abstract: A hydraulic fluid circuit for a quick rise type lifting jack positions multiple valves that control two stages of the lifting operation of the jack in the same valve housing machined into a base of the jack and thereby reduces the costs involved in manufacturing and assembling the hydraulic circuit of the jack.

Abstract: An apparatus comprises a pair of smooth linear rods, each of the rods providing a first rod end and a second rod end, the first rod end of each of the rods having a first blind bore therein, and the second rod end of each of the rods having a second blind bore therein. A coiled spring is integrally engaged between the dual linear rods. The coiled spring provides a pair of opposing terminal spring ends, one of each of the terminal spring ends integrally engaged in the first blind bore of each rod. The second blind bore of each of the linear rods is adapted for accepting a wheel lug therein.

Abstract: The present invention is directed to a connector holder for holding a connector during wiring of the connector which facilitates accurate positioning of protection material about wires of a cable. The connector holder includes a support member such as a pillar for mounting the invention to the wiring board. The connector holder includes a holder portion which houses a connector in an insertable and removable manner in such a condition that the wires can be connected thereto, and a positioning member is integrally provided with the holder portion and assists in the positioning of protection material about cable wires connected to the connector. The positioning member may also include an adjustable pin capable of positioning protection material arranged around the periphery of a cable in such a condition that the plurality of wires of the cable connected with a connector is arranged on both sides of the positioning member.

Abstract: A pipe threading arrangement includes a launch body (13) and a parachute (15) within tube (12). The parachute is launched into pipe (2) via slide valve (1) and brings with it a threading cable (19). At a remote location within the pipe (2) the parachute is stopped by a catch arm (8) with associated catch finger (5). The parachute is deflated and retrieved, together with the threading cable, via the slide valve into the catch body (4).

Abstract: An adjustable C-clamp which includes a generally C-shaped frame fitted with parallel bottom and top clamp seats and threadibly receiving a clamp cylinder at the top clamp seat. A slotted cylinder is secured in the clamp cylinder typically by means of an allen screw, and a clamp rod slidably disposed in the slotted cylinder is fitted with a clamp rod pin. A clamp nut typically attached to one end of the clamp rod faces the bottom clamp seat across the expanse of the clamp frame. The clamp rod pin is designed to traverse a pair of parallel, diametrically-opposed longitudinal cylinder slots in the slotted cylinder to facilitate slidably adjusting the clamp rod in the slotted cylinder and quickly positioning the clamp nut at a selected spacing from the bottom clamp seat.