Abstract: A household appliance including a frame defining a cavity at a bottom of the household appliance and a toe-kick panel structured to cover electrical components of the household appliance housed in the cavity. In an exemplary embodiment of the invention, the toe-kick panel includes at least one snap-on connector to secure the toe-kick panel to the frame. The invention also includes a method for attaching the toe-kick panel to the household appliance.

Abstract: Apparatus to insert a spigot into a flexible tube comprises a support for holding and advancing a spigot, actuated by a motor, and a grip for holding a flexible tube, its opening and closing controlled by a motor. On operation of the apparatus, the support is advanced to urge the spigot into the flexible tube. To prevent catching or snagging of the tube on the spigot preventing insertion, after forward motion of the spigot, the jaws are opened, and the spigot is retreated a short distance, the jaws are to closed and the spigot is advanced again. This cycle is then repeated until the spigot is fully within the tube. The jaws have a front section and a separate back section, mounted against a resistance, to hold the tube. The front section will be urged back against the resistance on insertion of the spigot, which will not reach the back section.

Abstract: An ambulatory drug infusion system includes a disposable ambulatory infusion pump and a flow regulator for regulating flow of the drug supplied from the disposable ambulatory infusion pump. The flow regulator includes a cylinder assembly of first, second and third cylinders arranged coaxially. The flow regulator includes a continuous spiral liquid-flow channel formed between the first cylinder and the second cylinder fitted into the first cylinder. The regulator includes bypass through-holes in communication with the spiral channel and formed in the second cylinder. The regulator further includes liquid-flow passages formed between the second cylinder and the third cylinder fitted into the second cylinder. The through-holes are in communication with the passages, respectively. One of the passages can be selected to choose a predetermined flow rate. The regulator further includes a diaphragm valve which can regulate fluid communication between the spiral liquid-flow channel and an outlet.

Abstract: A rolling cone cutter for a roller cone earth-boring bit has a generally conical body. The generally conical body defines a plurality of lands and grooves. Each land supports a circumferential row of primary cutter elements. At least one of the plurality of lands has a land sidewall. The land sidewall defines a boundary of an adjacent groove. A plurality of protective inserts are disposed within the land sidewall. The protective inserts may reduce erosion of the land sidewall. One or more protective inserts may be disposed between a pair of primary cutters.

Abstract: A lightweight and portable service tool and method of use is provided for facilitating bushing replacement without removal of suspension from a vehicle. A tool end removably straddles the suspension and anchors the tool to the suspension. An actuator end, connected to the tool end, imparts a bushing jacking force along a common tool axis for extracting a bushing from, or installing a bushing into an eyelet of the suspension. The actuator end can form a jack or form a bore for receiving a portable jack as the source of the jacking force.

Abstract: Installation/processing tools may be used to install one or more expandable structures in a workpiece. An installation/processing tool may include an expansion mandrel, a processing tool, and an expansion assembly having an expansion jaw movable between a collapsed configuration and an expanded configuration. An expandable portion of the expansion jaw is sized to fit within a passageway of an expandable member. When the mandrel is moved through the expansion assembly, the expansion jaw is moved between the collapsed and expanded configurations to cause expansion of the expandable member. The installation/processing tool can also be used to cold work a workpiece.

Abstract: A method for producing a shaft-hub connection, in particular between a helically toothed pinion (2) and a hub (6), a partial section (3) of the helically toothed running toothing (4) of the pinion is used, during the connection to the hub, as a type of chip-removing cutting tool, by virtue of the partial section cutting with the profiles of its teeth into the hub in an axially aligned fashion.

Abstract: Provided is a retainer for assisting in installation of a parking brake actuator for use in a vehicle by limiting relative movement of an input lever and a mounting bracket. The retainer has a first part and a second part connected via frangible connection(s). The first part of the retainer is fixed relative to a mounting bracket and the second part is fixed relative to the input lever (via a pivot member). After installation, the lever is moved from its first, installation position to a second, in-use position. The application of force and movement of the lever rotates the pivot member, which rotates the second part of the retainer relative to the first part thereby breaking the frangible connection(s). The input lever of the brake actuator is then ready for use to apply or release brakes of the vehicle.

Abstract: A rescue device for assisting in removing an individual from a particulate collapsed space comprising rectangular sheets having four sides with one longitudinal side having a male connector and the other longitudinal side having female connector. The sheets fit together by the female connector on one sheet sliding over the male connector on another sheet. The sheets can be individually inserted into the particulate, connecting one sheet at a time, this making it easier to create a rescue cavity. The sheets connect and are adapted to curl around so as to selectively create a rescue cavity of a desired size.

Abstract: An elastic bearing bush configuration is to be installed in a receptacle in particular for use in a suspension of a motor vehicle. The elastic bearing bush configuration contains an inner core, an outer sleeve, and an elastomer body connecting the inner core and the outer sleeve to each other. The outer sleeve is made of plastic. The elastic bearing bush configuration is characterized in that the outer sleeve has a press fit reinforcing element for fixing the outer sleeve in the receptacle by a force exerted directly on the receptacle by the press fit reinforcing element.

Abstract: A process is provided for forming a leaf-spacer pair for use in a leaf seal which effects a seal between two components. The process includes the steps of: (a) providing a leaf section which maintains, in the leaf seal, wiping contact with one of the components, and a root section from which the leaf section extends and which, in the leaf seal, is fixed relative to the other component, the leaf section and the root section being formed from a first sheet of material of substantially uniform thickness; (b) providing a spacer formed from a second sheet of material, the spacer being physically separate from the leaf section and the root section; and (c) fastening the spacer to the root section to form a leaf-spacer pair in which the spacer overlays the root section and remains fixed relative thereto on handling of the leaf-spacer pair.

Abstract: A gas injector system is provided that allows for improved distribution and directional control of the vapor material in a CVD or CVI process. Gas injector systems may be used without experiencing significant clogging of gas injector tube apertures over multiple CVD procedures. Further, a gas injector system include a dual aperture release system and/or allow vapor material to flow both substantially horizontally and substantially vertically.

Abstract: A method for repairing a crushing device or other device configured to comminute material includes the steps of removing at least one first insert from a portion of a crushing body such that at least one opening is formed in the portion of the crushing body, positioning at least one second insert in the at least one opening formed by the removing of the at least one first insert, positioning a force application mechanism adjacent to the at least one second insert and the portion of the crushing body, and actuating the force application mechanism to deform the portion of the crushing body to attach the at least one second insert to the portion of the crushing body. The one or more first inserts may be damaged and the one or more second inserts may be used to replace the one or more damaged first inserts. The force application mechanism is preferably explosive material. A method of forming a wearable surface is also disclosed.

Abstract: A fuel insertion tube tool for installing a fuel tube on a barb. The tool has first and second arms that are pivotably attached through an arm pivot axis. Each arm has a grip to engage the fuel tube. A tab extends from the first arm and is pivotably attached to a proximal end of a bar with a pivot pin that defines a bar axis. The bar axis and the arm axis are perpendicular to each other. A hook is disposed at a distal end of the bar for engagement with an attachment site. The tab functions as a fulcrum to reduce the amount of force required to install the fuel tube on the barb. The bar has weight reducing holes and the grips have straight knurls for frictional engagement with the fuel tube.

Abstract: A differential gear casing of flower pot construction has an outer surface which is configured for receiving a crown wheel, whereby the crown wheel can be pressed onto the outer surface by different amounts for different applications. The outer surface is free from projections such that the crown wheel can be mounted on the outer surface from any axial direction. The outer surface defines a band on the differential gear casing and is parallel with a central axis of the differential gear casing. The crown wheel is secured to the differential gear casing using an axial weld line. In other embodiments, the crown wheel and/or a cover for the differential gear casing are secured in place using axial and/or radial weld lines.

Abstract: A method for mounting or removing a power supply container of a drive motor of a motor vehicle that is secured to the motor vehicle using a bolt acted on by a piston. The method includes: acting on the piston to move the pistons relative to the bolt so as to disengage the bolt; and rotating the bolt such as to lock or unlock the bolt and lock or unlock the battery.

Abstract: A propeller shaft includes a first shaft having a yoke at one end, a second shaft slidably connected to the other end of the first shaft, and a surface treated member which is arranged at a connecting portion, at which the first shaft and the second shaft are connected to each other, and to which surface treatment for improving slidability of the second shaft with respect to the first shaft is applied. The surface treated member is formed by a substrate which is separate from the first shaft and the second shaft and to which the surface treatment has been applied. The surface treated member is arranged at the connecting portion, at which the first shaft and the second shaft are connected to each other, after the surface treatment is applied.

Abstract: In order to ensure reliable feeding in particular of a clinch nut (M) from a ready position (16) into a processing position, the processing tool designed as a press-in tool (2) has a guide element (14), through which the clinch nut (M) is pressed into the processing position by means of a punch (8) against an elastic holding force exerted by the guide element (14). The guide element (14) is designed in particular as a slotted bush and is arranged as an insert in a hold-down (12).

Abstract: A process is disclosed for inserting a piston pin wire lock ring, particularly Circlips, into a locking groove of a wrist pin bore of a piston. The wire lock ring is radially pre-compressed and thus reduced in size in such a manner that its outside diameter is smaller than the inner diameter of the piston wrist pin bore, by insertion of the ring into a sleeve/tube. While still in the sleeve/tube, the wire lock ring is subsequently inserted, in its compressed state, into the pin bore where it is then uncompressed and released into the locking groove of the piston bore through the use of a plunger inserted in the sleeve/tube to push the lock ring past the end of the sleeve/tube.

Abstract: A vehicle wheel weight has a mass portion of nonlead material having a first side for juxtaposition against a wheel rim and an opposite second side, one of which defines a clip groove. The weight further includes a clip having an extended portion for engaging the wheel rim. The clip further has an attachment portion seated in the clip groove such that the clip is fixed to the mass portion. In this regard, the clip groove has an attachment member receiving hole defined therein. The attachment portion of the clip defines at least one securement hole in register with the attachment member receiving hole of the mass portion when the attachment portion of the clip is positioned in the clip groove. An attachment member extends through the securement hole and into the attachment member receiving hole such that the clip is fixed to the mass portion.

Abstract: A gas burner including a burner body having a lower housing, an inlet conduit and a combustion surface element attached to the lower housing. A diffuser/reflector positioned within the body encourages even distribution and mixing of a combustible gas/air mixture. The diffuser/reflector is preferably of a sheet metal construction and includes a plurality of stamped openings with each of these openings having an overhanging guide plate. The combustion surface element includes a plurality of integrally formed rigidizing ribs and is made from a high temperature steel alloy wire cloth. The inlet conduit is secured directly or indirectly to an access door/bulkhead that is used to close off an access opening formed in a water heater wall through which the burner is installed. In one construction, an air scoop shrouds the inlet conduit and at least partially defines a flow path of primary air, substantially isolated from the combustion chamber.

Abstract: A method for producing a honeycomb body having a honeycomb structure disposed in a housing, includes at least forming a honeycomb structure, inserting the honeycomb structure into a housing, carrying out a heat treatment operation on the honeycomb structure having the housing, contacting outer regions with a molding, at least during the inserting step or the heat treatment step, and reproducing a desired outer contour of the housing with contact faces of the molding. A molding and an exhaust gas treatment unit produced with a thin housing in a dimensionally accurate manner, are also provided.

Abstract: A semi-automatic loader for needle boards (2) includes a filling device (51)that presents felting needles (17) arranged at a ratio that is consistent with the ratio of holes of a needle board. A machine operator can then grasp the felting 5 needles (17) by use of a multiple collet chuck (45) and set them in groups in the rows of holes of the needle board (2). This provides a loading method featuring extremely high productivity.

Abstract: A method of manufacturing a railroad freight car brake beam strut assembly including the steps of providing a railroad strut having an elongated slot defined between first and second sides of the strut, with each side of the strut defining a bore opening to the slot and to an exterior of the strut. The bores defined by the strut are aligned relative to each other along an axis. The methodology of the present disclosure further includes the step of: pressing a brake pin bushing into each bore of the strut in a direction extending away from the longitudinal axis of the strut with each brake pin bushing having first and second ends, and wherein a periphery of each bushing has a frusto-conical surface configuration. A railroad freight car strut assembly is also disclosed.

Abstract: A stackable shim system. A first shim includes a receiving feature, an attachment feature, and a main portion having a first thickness. A second shim also includes a receiving feature, an attachment feature, and a main portion having a second thickness. The receiving feature of each shim is configured to engage with the attachment feature of the other shim such that either shim can be removably attached to the other to create a stacked shim having a main portion having a thickness that is the sum of the first and second thicknesses. The shims may be conveniently used for taking up space and/or accommodating for irregularities in construction materials.

Abstract: A load detection device for a vehicle seat mounted between a floor side mounting mechanism and a seat side mounting mechanism and measuring a load applied by an occupant seated on the vehicle seat, includes a shaft member adapted to be fixed to one of the floor side mounting mechanism and the seat side mounting mechanism, a strain generating member fixed to the shaft member and including a hole into which the shaft member is press-fitted, a strain gauge attached to the strain generating member, the shaft member of which surface hardness is specified to be lower than a surface hardness of the hole and including a scraping projecting portion scraped off by means of the hole in a case where the shaft member is press-fitted to the hole, and an inter space formed between the strain generating member and the shaft member and positioned next to the scraping projecting portion.

Abstract: The disclosure provides bearing sleeves or bushings made of memory shape material, and processes for installing such bearing sleeves or bushings. In one process, inner and outer surfaces of a bearing sleeve, made of a memory shape material, may be compressed at least one first temperature. A bearing may be inserted in a cavity of the bearing sleeve, and the bearing sleeve may be disposed adjacent to a surface of a structure, while the bearing sleeve is at the at least one first temperature. The inner and outer surfaces of the bearing sleeve may be expanded, at least one second temperature, to abut against the bearing and the surface of the structure.

Abstract: According to a first embodiment, a light emitting diode (LED) light engine is described. The light emitting diode includes one or more LED devices disposed on a front side of an LED light engine substrate. A heat sink having a mating receptacle for the LED light engine is also provided. The LED light engine substrate and the mating receptacle of the heat sink define a tapered fitting by which the LED light engine is retained in the mating receptacle of the heat sink.

Abstract: A tubular bat having a barrel of thin walls is stiffened by rings to adjust and tune performance. The walls of a bat is thinned to reduce weight and to enhance a batters control. However, regulatory bodies dictate performance standards that may require stiffer walls. Additionally different regulatory bodies dictate different standards. Therefore in order to meet regulatory standards in various jurisdictions, the walls of the bat barrel may be stiffened using rings to adjust and tune performance while minimizing the weight of the bat. The design, size and material from which the ring is made may vary. The placement of the ring may be used to tune specific performance profile of a bat.

Abstract: A production method for complex bearings includes: preparing an outer member and a cylindrical sintered bearing member. The outer member includes a fitting hole having: an almost circular cross section; an inner peripheral surface; and a surface roughness of the inner peripheral surface which is 3.2 to 100 ?m at a maximal height. The sintered bearing member includes: an outer diameter allowing clearance fit of the sintered bearing member into the fitting hole of the outer member. The production method further includes: inserting the sintered bearing member into the fitting hole of the outer member and inserting a columnar core rod into an inner peripheral surface of the sintered bearing member; and compressing the sintered bearing member in an axial direction.

Abstract: The invention relates to the attachment of a multiple-conductor electronic cable to an electronic circuit in a sealed housing. The cable is placed in a sheath of a heat-deformable material and the method comprises the following steps: placing a rigid bushing (40) with a protruding collar (48) on the exposed end of the cable, heating the end in a conical mold or softening the sheath, inserting the bushing between the cable conductors and the softened sheath, the collar of the bushing pushing the sheath material until the conical portion of the mold is filled, cooling the sheath for solidifying it, extracting the end of the cable from the mold, the end having a conical portion with an increasing diameter ending with the protruding collar, inserting the cable in the housing opening from the inside before closing the housing. The invention can be used or an intra-oral dental radiology sensor.

Abstract: Methods and devices for shaped ballistic radomes according to various aspects of the present invention comprise systems for shielding transmission devices; and more particularly, representative and exemplary embodiments of the present invention generally relate to improved methods and systems for ballistic deflection and protection of antenna equipment units, and/or the like.

Abstract: A tool for mounting a chisel on a chisel holder, having an actuating member, which has a push-off section, wherein the actuating member can be displaced along a displacement direction. It is possible to simplify changing the chisel if the actuating member can be shifted by an actuating unit. The actuating unit has a draw-in section, which is spaced apart from the push-off section and is arranged transversely with respect to the displacement direction of the actuating member. The actuating member can be power-operated bidirectionally in the displacement direction by the actuating unit.

Abstract: The present invention relates generally to the system and method for extending lifetime of automatic transmission, and more specifically to the system and method for extending lifetime of GM 700r4 through 4I70e automatic transmissions input shaft rear stator bearing by increasing the bearing surface area on rear stator bearing. By increasing the durability of the rear stator bearing, the most common failures in the transmission, which are the failure of the input output shaft lubrication seal, rear planetary failure, and the binding and burning of the clutch pack, can be overcome. The present invention increases the rear stator bearing life, the input output shaft oil seal life, the rear planetary life, and the clutch pack life.

Abstract: A solar concentrator assembly can include mirror assemblies that are connected to pivotable frames with locating connections. The locating connections can be in the form of cam devices or tool-less connections formed by snap fitting devices as well as tool-less cam devices.

Abstract: A mandrel for supporting a stent and rollers for pressing a radiopaque marker into a stent are disclosed. The mandrel can have a forward portion for carrying the stent and a rear portion for urging the stent forward portion into a gap between the rollers. The mandrel may be pushed or pulled into the gap, which is sized to allow the rollers to press the marker into engagement with the stent. Prior to moving the mandrel into the gap, the marker may be placed on a surface of the stent or partially inside a recess in the stent. Several markers can be efficiently and uniformly pressed onto the stent by moving the mandrel into the gap in one continuous movement in an axial or lateral direction. Markers can also be pressed onto the stent by placing the stent in the gap and rotating the stent about its central axis.

Abstract: A device and method for coupling a pipe and a fitting. The device includes a pipe holder for releasably gripping a pipe, a fitting retainer for releasably retaining a pipe fitting substantially coaxially with a pipe in the pipe holder, and a drive mechanism for driving together the pipe holder and the fitting retainer along a longitudinal axis in a relative motion between them. The device may optionally slide a reinforcing sleeve along the pipe to cover the end of the pipe on the fitting.

Abstract: Method of replacing an organic photo conductor (OPC) drum of an image forming apparatus, the image forming apparatus having a support carriage arranged to axially support the OPC drum at a first end and a second end. The method includes removing the OPC drum from the support carriage and procuring a replacement OPC drum having a first axial flange/endpin and a second axial flange/endpin. The first axial flange is inserted into the first end of the support carriage and the second end of the support carriage is elastically deformed. Then, the second axial flange is inserted into the second end of the support carriage, and a force is exerted against the second axial flange until the second end of the support carriage returns to an un-deformed state.

Abstract: There is provided a fixing method for fixing components together in which two components in the form of a first component and a second component are positioned such that they are mutually superimposed in predetermined relative positions, and are then fixed together, wherein the first component has at least two portions for engagement that are recessed in a contact surface thereof which is placed against the second component towards a surface thereof which is located on an opposite side from the contact surface, and the second component is formed from thermoplastic resin and has at least two protruding portions that protrude from positions that correspond to the portions for engagement of the first component on a surface of the second component which is located on the opposite side from a contact surface thereof which is placed against the first component, and wherein the fixing method for fixing components together includes: a first step in which the contact surfaces of both the first component and the second

Abstract: Described is a press-in element for pressing into a non-pierced or pre-pierced component. The press-in element has a head part having a ring surface confronting the component and a neck part which projects away from the ring surface, i.e. from the component contact side. The head part further has a ring-like projection surrounding the neck part with a radial spacing and projecting away from the ring surface. The neck part has a radially outwardly projecting ring bead, which can be formed as a continuous ring bead or as a ring bead interrupted at points. The apex of the ring bead has an axial spacing from the ring surface which is larger than the axial spacing of the apex of the ring-like projection from the ring surface, which lies radially within this projection and together with it and the ring bead forms a pocket which receives material of the component.

Abstract: An end fitting of a surge arrester has a recess for receiving a rod, wherein the rod can be pressed inside the recess by applying an outer force to the end fitting. Furthermore, a corresponding device for pressing an end fitting and a method for pressing an end fitting are described. The end fitting contains a plurality of body edges delimited in an arc shape. Spaces between points on the body edge delimited in an arc shape and a center point of the recess are equidistant. Thus it is possible to exert a uniform force on all sides on a recess and thus provide an even deformation on all sides of the recess during pressing. As a result, accordingly pressed items, for example rods within the recess, are pressed within the recess on all sides.

Abstract: In a method of manufacturing an articulated shaft structure for the transfer of torque from a transmission to a differential drive, including a connecting flange having a tube section, a shaft plate disposed between the connecting flange and a transmission output flange and forming a torsion element for accommodating some articulation of the connecting flange relative to the output flange, and a centering part extending from the connecting flange for aligning the articulated shaft relative to a transmission shaft, the connecting flange is formed integrally with the tube section by deep-drawing in follow-on tool the tube section and, in the same manufacturing step, punching openings into the flange, and deep-drawing the centering part and pressing it into the tube section.

Abstract: The present invention relates to a hose system, in particular for vehicle tires, having a hose (12) formed into a ring, comprising polyurethane and having an at least substantially constant wall thickness along the extent thereof, wherein the substantially constant value of the wall thickness is in the range between 0.1 mm and 0.4 mm.

Abstract: The present invention relates to an assembled shaft element, in particular an assembled camshaft for valve-controlled internal combustion engines, wherein a hub body having at least one functional part, in particular at least one cam, is held on a shaft by a formfit connection using a splined tooth system in the circumferential direction, wherein the splined tooth system includes shaft splines formed on the shaft and interacting with hub body splines formed in a hub body recess. According to the invention, the at least one hub body (14) is held in addition to the circumferential formfit connection by an interference fit on the shaft (12) implemented by a press fit between a tooth circle of the shaft splines (22) and a root circle of the hub body splines (26). The invention further relates to a method for producing an assembled camshaft for valve-controlled internal combustion engines.

Abstract: A method of using a hydraulically driven pressing device for pressing a fitting on a tube is provided. The pressing device includes a piston and a cylinder for acting on pressing jaws. A piston shaft is connected to rollers. The pressing device can be used to carry out pressing operations requiring different levels of pressing power, by using an adjustable stop which is provided in the direction of displacement of the piston in order to achieve different end positions for the piston during the piston return stroke.

Abstract: A method of forming paneled corners including the step of providing first and second components. The first components can each have a pair of first legs forming an exterior angle of greater than 180 degrees, and can have a first connector. The second components can each have a pair of second legs forming an interior angle of less than 180, and can have a second connector. The method can further include the steps of choosing an outside corner from an outside corner and an inside corner, selecting one of the first components, placing the one first component over the outside corner, securing the one first component, placing panels on the first legs, selecting one of the second components, pushing the one second component onto the one first selected component to engage their respective second and first connectors, thereby capturing the edges of the two panels.

Abstract: An electrode assembly includes an electrode electrically connected to a capacitor with a wire. An assembly carrier may be used to hold and secure at least the wire and capacitor during assembly. A method of assembly for attaching a wire to a capacitor and an electrode may include an assembly carrier for housing and securing the wire, capacitor, and electrode during assembly.

Abstract: A mandrel for supporting a stent and rollers for pressing a radiopaque marker into a stent are disclosed. The mandrel can have a forward portion for carrying the stent and a rear portion for urging the stent forward portion into a gap between the rollers. The mandrel may be pushed or pulled into the gap, which is sized to allow the rollers to press the marker into engagement with the stent. Prior to moving the mandrel into the gap, the marker may be placed on a surface of the stent or partially inside a recess in the stent. Several markers can be efficiently and uniformly pressed onto the stent by moving the mandrel into the gap in one continuous movement in an axial or lateral direction. Markers can also be pressed onto the stent by placing the stent in the gap and rotating the stent about its central axis.

Abstract: A metal cutting tool assembly comprising a rigid holder blade, an insert receiving slot formed in a leading end of the holder blade and defined between a resiliently displaceable clamping jaw formed integrally with the holder blade and rigid base jaw forming part of the holder blade, spaced apart displacement and supporting surfaces respectively formed in or on the clamping jaw and the holder, and a slot opening key, with a pair of spaced apart projecting prongs of the key adapted to engage the surfaces. At least one of the prongs is displaceable with respect to the holder blade so as resiliently to displace the clamping jaw outwardly with respect to the base jaw into an opening position for insertion or removal of an insert.

Abstract: A metal cutting tool assembly comprising a rigid holder blade, an insert receiving slot formed in a leading end of the holder blade and defined between a resiliently displaceable clamping jaw formed integrally with the holder blade and rigid base jaw forming part of the holder blade, spaced apart displacement and supporting surfaces respectively formed in or on the clamping jaw and the holder, and a slot opening key, a pair of spaced apart projecting prongs of the key with adapted to engage the surfaces. At least one of the prongs is displaceable with respect to the holder blade so as resiliently to displace the clamping jaw outwardly with respect to the base jaw into an opening position for insertion or removal of an insert.