Abstract: A motion guide apparatus which prevents a retainer from falling-off. A motion guide apparatus includes a track member having a rolling element rolling portion; a movable member having a loaded rolling element rolling portion facing the rolling element rolling portion of the track member; a return path; and a turn-around path connected to a loaded path and the return path; a plurality of rolling elements placed in the loaded path, the return path, and the turn-around path; and a retainer configured to hold at least one of the plurality of rolling elements. Grooves into which an end of the retainer in a width direction thereof enters are formed in the loaded path, the return path, and the turn-around path. A width of the grooves in at least a part of the turn-around path and/or in the return path is greater than a width of the groove in the loaded path.

Abstract: The present disclosure describes bearing assemblies for a mover of a linear motor system. The bearing assemblies may include a plurality of bearings, a housing that retains the bearings, a plurality of springs biasing at least one of the plurality of bearings towards a track of the linear motor system, and at least one dampening element dampening movement of one or more of the plurality of springs.

Abstract: The present invention relates to a linear module. The linear module according to an example of the present invention comprises a base plate; a screw disposed on the base plate and arranged in the longitudinal direction of the base plate; a carrier block including a hollow part surrounding a portion of the screw; a carrier block rail disposed on one side of the carrier block and arranged in the longitudinal direction of the base plate; a long rail disposed on the base plate and arranged in the longitudinal direction of the base plate; and a roller guide disposed between the carrier block rail and the long rail and to reduce the frictional force between the carrier block rail and the long rail when the carrier block moves in the longitudinal direction of the base plate.

Abstract: A roller assembly includes a roller having an axial hole and an axle portion disposed in the axial hole to allow the roller to rotate about the axle portion; a sleeve with a first end disposed at a first end of the axle portion and a second end having a fitting portion, the fitting portion being fitted to a carried object, the sleeve has a first blocking portion positioned proximate to a first side of the roller to allow the roller to rotate between the first blocking portion and the fitting portion, wherein one of the axle portion, the axial hole and the first blocking portion has a substance conducive to reduction of friction between the roller and the sleeve.

Abstract: A linear guide which is of a simple structure and which can be easily fitted, having self-adjusting play reduction. It includes a slider with slide surfaces and a rail with guide surfaces, wherein the slider is guided with its slide surfaces adapted to the guide slide surfaces in a slidingly displaceable reciprocating relationship in a displacement direction at the guide surfaces of the rail. The self-adjusting play reduction of the linear guide has at least one adjusting element which according to the invention has a slide surface forming a portion of one of the slide surfaces of the slider.

Abstract: A refrigerator drawer assembly includes a drawer body, a first wheel mounted on a first side of the drawer body, and a second wheel mounted on a second side of the drawer body. The first and second wheels have respective first and second widths. The assembly also includes a first guide body including a first track defining a closed side and an open side. The first guide body defines a lip surrounding at least a portion of the open side and spaced from the closed side at a first distance generally equal to the first width. The first wheel is at least partially received between the closed side and the lip. The assembly further includes a second guide body has a second track defining closed side and an open side. The open side is spaced from the closed side at a second distance greater than the second width.

Abstract: A telescopic shaft includes: an inner shaft where a pair of recessed grooves that face each other in a direction perpendicular to an axis and extend in an axial direction are formed; an outer shaft where a pair of recessed grooves that face each other in the direction perpendicular to the axis and extend in the axial direction are formed; a plurality of rolling bodies that are disposed between each of the recessed grooves and the corresponding recessed groove so as to form a line in the axial direction; a pair of stoppers; and a buffer body unit. Each of the stoppers restricts falling of a rolling body at an end portion of the corresponding line from the corresponding recessed groove of the inner shaft. The buffer body unit integrally includes a pair of buffer bodies, and a connection portion that connects the pair of buffer bodies.

Abstract: A rolling element of a tripod joint and a tripod joint which has a rolling element is provided. In the rolling element, an annular spring element is provided which spreads the housing inner body and a first housing part and a second housing part of the rolling element apart and presses rolling bodies of the rolling element against raceways of the outer part of the tripod joint.

Abstract: Device for coupling an inner shaft and an outer shaft which slide along their common axis with balls positioned between the two shafts. The balls rest directly in axial grooves of the outer shaft and on two rails positioned in axial grooves of the inner shaft. The two rails pivot about the balls, by pressing against flanks of mating curved profile of the axial groove, and are held in place by an elastic element which presses against the bottom of the axial groove.

Abstract: An auto-centering structural bearing transfers vertical loads to a supporting structure while preventing transfer of lateral loads. In one embodiment, the structural bearing includes: parallel lower, middle, and upper bearing plates; a lower roller bed sandwiched between the lower and middle bearing plates and laterally displaceable in a first direction; an upper roller bed sandwiched between the middle and upper bearing plates and laterally displaceable in a second direction; lower centering means including springs compressible by lateral displacement of the middle bearing plate and the lower roller bed in the first direction; and upper centering means comprising springs compressible by lateral displacement of the upper bearing plate and the upper roller bed in the second direction. Upon removal of loads causing such lateral displacements, the springs will rebound to their unstressed states, thereby returning the displaced bearing plates and roller beds to their centered positions.

Abstract: A relative sliding rail structure using a pivoting mechanism mainly includes a pivot shaft, a main frame, a sliding-guided member and a pivoting seat. The main frame is connected to the pivot shaft via the pivoting seat. The sliding-guided member includes at least one sliding-guided portion engaged to a sliding seat of the main frame, so that the main frame and the sliding-guided member are relatively moved when the main frame is moved along the sliding-guided member. The main frame includes a hollow portion disposed on the sliding seat, and the pivoting seat is combined with at least one roller, wherein the roller is appropriately passed through the hollow portion to enter the sliding seat of the main frame to abut against the sliding-guided portion of the sliding-guided member, so that the main frame and the sliding-guided member are connected to each other to form a stable mutual sliding combination.

Abstract: A linear guidance system including a guide rail (1) and a carriage (2) guided displaceably on the guide rail by at least two ball bearings (3, 3?), wherein the ball bearings comprise a plurality of balls (4) and a ball cage (5) and the guide rail (1) has running surfaces (9, 9?) and the carriage (2) has running surfaces (10, 10?) for the rolling movement of the balls (4) of the ball bearings (3, 3?), wherein the carriage (2) includes a profile member (11) which is substantially C-shaped in cross-section, wherein the running surfaces (10, 10?) are provided at end portions (11?, 11?) of the C-shaped profile member (11) and the carriage (2) further includes a plate (12) which extends between end portions (11?, 11?) of the C-shaped profile member (11) of the carriage (2) and is connected to the end portions (11?, 11?), forming a closed hollow profile.

Abstract: A relative sliding rail structure using a pivoting mechanism mainly includes a pivot shaft, a main frame, a sliding-guided member and a pivoting seat. The main frame is connected to the pivot shaft via the pivoting seat. The sliding-guided member includes at least one sliding-guided portion engaged to a sliding seat of the main frame, so that the main frame and the sliding-guided member are relatively moved when the main frame is moved along the sliding-guided member. The main frame includes a hollow portion disposed on the sliding seat, and the pivoting seat is combined with at least one roller, wherein the roller is appropriately passed through the hollow portion to enter the sliding seat of the main frame to abut against the sliding-guided portion of the sliding-guided member, so that the main frame and the sliding-guided member are connected to each other to form a stable mutual sliding combination.

Abstract: A slide rail structure of relative slide assembly includes two slide guide members disposed on a slide member. Each slide guide member has a locating section connected with the slide member. The locating section has a slide guide section disposed on one side of the locating section, which side is distal from an edge of the slide member. The slide guide section is bent toward the edge of the slide member. Two pivot seats are pivotally disposed on two sides of a relative slide member. A main support is connected on each pivot seat. The main support has a relative slide guide section disposed on the main support and slidable along the slide guide section. The slide guide section is bent over the locating section in an overlapping state. Therefore, the width and volume of the slide guide member are minified to enlarge internal utility space of the slide member.

Abstract: A motion guide device is able to damp a moving block from vibrating in a direction perpendicular to an axis of a raceway rail. A damping plate with a surface facing a surface of a raceway is provided at a moving block body. The surface of the damping plate is set to be in contact with the raceway rail or is set such that a gap between its surface of the raceway rail is as close to zero as possible. When vibration occurs from the raceway rail or the moving block, the surface of the raceway rail and the surface of the damping plate come into contact with each other. This brings about change in a spring constant of the motion guide device in the direction perpendicular to the axis of the raceway.

Abstract: The metallic mold 90 includes a product configuration portion 93 formed between an upper mold 91 and a lower mold 92. This product configuration portion 93 is composed so that a rolling element accommodating belt 50 formed by this product configuration portion 93 can include spacer portions interposed between balls adjacent to each other in an infinite circulating passage and also include connecting arm portions for connecting the spacer portions to each other and so that the balls can be aligned in the alignment direction in the infinite circulating passage. The upper mold 91 has a splitting structure. In this splitting structure, a splitting position BL is set at a position passing through a position 91t for forming an end portion on the outer circumferential side in the inner and outer circumferential direction of the infinite circulating passage of the spacer portions 51.

Abstract: An auto-centering structural bearing transfers vertical loads to a supporting structure while preventing transfer of lateral loads. In one embodiment, the structural bearing includes: parallel lower, middle, and upper bearing plates; a lower roller bed sandwiched between the lower and middle bearing plates and laterally displaceable in a first direction; an upper roller bed sandwiched between the middle and upper bearing plates and laterally displaceable in a second direction; lower centering means including springs compressible by lateral displacement of the middle bearing plate and the lower roller bed in the first direction; and upper centering means comprising springs compressible by lateral displacement of the upper bearing plate and the upper roller bed in the second direction. Upon removal of loads causing such lateral displacements, the springs will rebound to their unstressed states, thereby returning the displaced bearing plates and roller beds to their centered positions.

Abstract: A linear guidance system having a guide rail and a carriage. The carriage is guided displaceably on the guide rail by way of at least two ball bearings, wherein the ball bearings respectively comprise a plurality of balls and a strip-shaped ball cage. The guide rail has running surfaces and the carriage has running surfaces for the rolling movement of the balls of the ball bearings. The ball cage has a plurality of substantially circular through openings which are arranged in succession in a row and into which the balls are inserted, wherein the inside diameter of the through openings tapers conically in the direction from a running surface of the guide rail to the associated running surface of the carriage to an inside diameter or is constricted by limiting means to an inside diameter which is smaller than the diameter of the balls so that the balls are secured in the through openings to prevent them from falling out of the through openings in the direction of the running surface of the carriage.

Abstract: A pull-out guide, especially for household appliances, includes a guide rail and at least one additional rail which are mounted to be slidable relative to each other on sliding surfaces by way of rolling elements and which have at least one locking device for releasably fixing the additional rail in a predetermined position on the guide rail and/or on another additional rail. At least one locking device includes a spring element which can be make to engage with a profiled section or recess located at a distance from a sliding surface on a rail.

Abstract: The metallic mold 90 includes a product configuration portion 93 formed between an upper mold 91 and a lower mold 92. This product configuration portion 93 is composed so that a rolling element accommodating belt 50 formed by this product configuration portion 93 can include spacer portions interposed between balls adjacent to each other in an infinite circulating passage and also include connecting arm portions for connecting the spacer portions to each other and so that the balls can be aligned in the alignment direction in the infinite circulating passage. The upper mold 91 has a splitting structure. In this splitting structure, a splitting position BL is set at a position passing through a position 91t for forming an end portion on the outer circumferential side in the inner and outer circumferential direction of the infinite circulating passage of the spacer portions 51.

Abstract: Provided is a roll unit to be dipped in a surface treatment liquid of a copper foil, wherein a bearing box for housing a roil shaft is configured from two bearing boxes that are divisible, one of the bearing boxes is configured from a roll-side bearing box arranged on a roll main body-side and the other bearing box is configured from a shaft end-side bearing box arranged on the shaft end-side of the roll, a shaft sleeve covering an outer periphery of the roll shaft is provided in the roll-side bearing box and an oil seal is provided along an outer periphery of the shaft sleeve, and a bearing for rotatably supporting the shaft is disposed in the shaft end-side bearing box.

Abstract: A slide assembly with a security device includes a first slide member, a second slide member, first and second stop members and an elastic member. The first slide member has a guiding passage. The first and second stop members are located on the first slide member. The first and second stop members each include an engaging portion and a stop portion. The engaging portions and the stop portions of the first and second stop members are in the guiding passage. The elastic member is connected to the first and second stop members. The stop portions contact against first and second stop walls. The first and second stop members are moved from the guiding passage when the second slide member is inserted in the first slide member via the guiding passage, so that the second slide member may be connected to the first slide member correctly.

Abstract: A guide table device is provided with a lower-side plate 10 provided with a pair of rolling member rolling grooves 11 formed in a first (X) direction, an upper-side plate 30 provided with a pair of rolling member rolling grooves 31 formed in a second (Y) direction, an intermediate member 20 having rectangular configuration provided with four side portions to which four rolling member rolling grooves 21 are formed so as to be opposed to a pair of rolling member rolling grooves of the lower-side plate and a pair of rolling member rolling grooves of the upper-side plate, and a plurality of balls 40 disposed to be rollable between four rolling member rolling passages formed by the lower-side plate, the upper-side plate and the intermediate member. The four rolling member rolling grooves 21 formed to the four side portions of the intermediate member 20 are formed on the same plane.

Abstract: There is provided a rolling element accommodating belt for a linear guide apparatus which has a guide rail, a slider having a load rolling element guiding face which constitutes a rolling element track path together with the guide rail, a pair of direction converting paths and a rolling element return path, a plurality of rolling elements circulating within an endless circulation path defined by the rolling element track path, the pair of direction converting paths and the rolling element return path; and a guide groove. The rolling element accommodating belt includes a plurality of spacer portions interposed between the rolling elements, coupling arms to be guided by the guide grooves and rolling element accommodating portions accommodating the rolling element. The spacer has an inward abutting face abutting on the rolling element so as to prevent the rolling element from moving to inner diameter side of the endless circulation path.

Abstract: An expandable shaft includes an outer shaft and an inner shaft. Plural rolling elements are pinched elastically in a space between raceway grooves of the outer shaft and the inner shaft. An outer peripheral surface of the inner shaft includes flat portions parallel to each other. An inner peripheral surface of the outer shaft includes flat limiting portions parallel to each other. The respective limiting portions limit relative rotation of the outer shaft and the inner shaft by engaging with corresponding flat portions. A deformation promoting portion is placed in a specific region of the outer shaft between a plane including a center of curvature of the raceway groove of the outer shaft as well as a central axis line of the outer shaft and each limiting portion.

Abstract: A detachable rolling-element retainer comprises: a slide block defined with a slide groove in which disposed a plurality of rolling elements and a base inserted in the slide groove of the slide block. The base is provided at either end thereof with elastic deformable stopping portions. One of the stopping portions is positioned at an end of the slide block after being compressed in to and passing through the slide groove, while another one of the stopping portions is positioned at another end of the slide block, thus enabling the base of the rolling-element retainer to be inserted into or disengaged from the slide groove of the slide block easily while preventing disengagement of the rolling elements from the slide block.

Abstract: A motion guide device is provided which is able to damp the moving block from vibrating in a direction perpendicular to an axis of the raceway rail. A damping plate (8) with a surface facing a surface of a raceway (1) is provided at a moving block body (4). The surface of the damping plate (8) is set to be in contact with the raceway rail (1) or is set such that a gap between its surface of the raceway rail (1) is as close to zero as possible. When vibration occurs from the raceway rail or the moving block, the surface of the raceway rail (1) and the surface of the damping plate (8) come into contact with each other. This brings about change in a spring constant of the motion guide device in the direction perpendicular to the axis of the raceway, thereby improving damping performance for the vibration in the perpendicular-to-axis direction.

Abstract: Provided is a motion guide device having a low rigidity in the vertical direction and a low rigidity in the horizontal direction. The motion guide device has: a raceway rail 15 having a bottom surface 30a, side surfaces 30b and an upper surface 30c and being mounted on one of a base 12 and a moving body 11; and a moving block 16 having a center portion 16a facing the upper surface 30c of the raceway rail 15 and side wall portions 16b facing the side surfaces 30b of the raceway rail 15 and being mounted linearly or curvilinearly movable relative to the raceway rail 15. On a side surface of the moving block 16, a displacement absorbing mechanism 17, 38 is provided.

Abstract: A ball chain comprises a sequence of balls and an longitudinally elongated spacing chain having a sequence of holes thereon for receiving the balls. The spacing chain further includes a sequence of spacers interposed between the balls whereby the balls will be separated to each other, at least two longitudinally extended flexible strip and a plurality of transverse flexible connecting beam whose two ends respectively are connected to the longitudinal flexible strip, whereby the spacers attach to said connecting beam through an elastic member. The spacers can accordingly deflect and twist freely and the transverse flexible connecting beam can keep as long as possible and provide the best flexibility for being bent in various directions. Therefore, the ball chain can run in a three-dimensionally direction-chain recirculation channel smoothly and with low resistance.

Abstract: A telescopic shaft for vehicle steering has first and second torque transferring members. The first torque transferring member is interposed, with an elastic body in between, between axial grooves formed in an outer peripheral surface of a male shaft and an inner peripheral surface of a female shaft. The second torque transferring member is interposed between other axial grooves formed in the outer peripheral surface of the male shaft and in the inner peripheral surface of the female shaft. The elastic body has transferring-member-side contact portions contacting the first torque transferring member, shaft-side contact portions contacting groove surfaces of the axial groove of the male shaft or the female shaft, and a biasing portion for elastically urging the transferring-member-side contact portions and the shaft-side contact portions away from each other. Rigidity of the transferring-member-side contact portions is different from that of the shaft-side contact portions.

Abstract: A linear guide for transmitting a torque between a tubular housing, which is defined by a longitudinal axis and rotatable about the longitudinal axis, and a shaft, which is received in the housing and movable in the direction of the axis in relation to the housing, includes a bearing assembly received in the housing for support of the shaft and attached to the housing by swaging a housing portion. The bearing assembly has two bearing members and a set of rolling bodies disposed between the bearing members. One bearing member is constructed as bushing which is retained in the housing and defines a center axis which is oriented out-of-alignment with a normal upon a longitudinal shaft axis, and the other bearing member has a cup-shaped configuration to define a convex surface for support by a surface area of the shaft.

Abstract: A gearshift device for a multiple-gear change box of a vehicle includes at least two gearshift rods with a rectangular cross-section. A roller bearing and a locking device are provided for guiding and locking the gearshift rods, with each gearshift rod having its own locking element.

Abstract: A slide mechanism includes first and second rails connected for relative sliding movement with respect to each other. A damper mechanism is secured to one of the rails and can be connected to and disconnected from the other of the rails to provide a damping effect for relative movement of the rails during at least a part of the movement thereof.

Abstract: A parallel guide apparatus comprises two roller-type linear guide apparatuses disposed in spaced-apart, confronting, parallel relation. Each roller-type linear guide apparatus comprises a rail 2 and a slider 3 slidably assembled into the rail 2 via a roller 9. The rail 2 is made by deforming a plate material to form a channel-shaped cross section. The slider 3 has at least three roller 9 which are disposed such that their entire width d becomes slightly larger than the distance 2 between opposite guide planes of the rail 2. The rollers 9 supported on the slider 3 are brought into contact with guide planes of the rail 2. The rollers 9 may be made of a sintered metal impregnated with a lubricant. The rollers 9 in one of the roller-type linear guide apparatus are slightly movable toward the rollers 9 in the other roller-type linear guide apparatus.

Abstract: A guide mechanism has a linear guide rail, a guide block displaceable along the linear guide rail, and a roller carrier plate interposed between the linear guide rail and the guide block and having an array of rollers held in line-to-line rolling contact with a side surface of the linear guide rail. The rollers roll in line-to-line rolling contact with the side surface of the linear guide rail, thus reducing resistance to the movement of the guide block along the guide rail and minimizing wear on the rollingly contacting components.

Abstract: A chair having height-adjustable arm assemblies mounted adjacent opposite sides of the seat. Each arm assembly includes a horizontally elongated armrest which adjacent one end is connected to an upper end of a support column. The support column is axially slidably supported within an elongate support tube which projects downwardly adjacent a side of the chair seat. The support column and support tube have a cooperating linear anti-friction bearing arrangement therebetween, the latter incorporating a resilient support track to eliminate circumferential clearance. A latch mechanism includes a movable latch member carried on the column and cooperating with a plurality of latch-receiving slots formed in the support tube. The latch member is activated by a push rod which projects upwardly through the support column, and at its upper end is activated by an actuating lever which is pivoted on and projects lengthwise of the armrest and terminates in an actuating button disposed under the front end of the armrest.

Abstract: A linear guide apparatus includes a base, a movable member movable to the base, first and second guide receptacles on the movable member, first and second linear guide members, being parallel to each other and received by the first and second receptacles to guide movements of the first and second receptacles, the first guide being fixed on the base and the second guide being arranged on the base, and a pre-load adjusting unit, provided on the base, for supporting the second guide to be movable in parallel to the first guide and for adjusting a distance between the first and second guides, thereby adjusting a pre-load applied between the guides and the receptacles of the movable member. The adjusting unit has a stationary projection fixed on the base, a pre-load block, and pivot angle adjusting mechanism.

Abstract: Wheel (10) for roller guides for drawers in furniture, having a wheel body (12) made of a shape-stable hard plastic which has a circumferential groove-like opening (28) in the rim with at least one recess and having a tire (20) of resilient material, preferably an elastomeric plastic protruding above the rim of the wheel body. The plastic is injected in fluid form into the groove-like opening (28) with the recess or recesses and in its elastically deformable final state it conforms to the groove-like opening and recess(es). In a side surface of the wheel body (12) an open-mouthed annular groove (26) is provided and the recess(es) issuing from the circumferential, groove-like opening (28) for the integrated tire (20) is (are) configured as a passage (22) going all the way to the annular groove (26) .

Abstract: A rolling guide unit that inhibits noise and vibrations is described. The above-mentioned advantage is obtained by providing an elastic member at a prescribed site on at least one of either a rolling element or rolling element circulating path in which said rolling elements roll so as to make contact with the other.

Abstract: A stiffener assembly which provides for improved performance of a movable stage arrangement. Often, it is desired to provide a movable stage arrangement in which a stage moves linearly with respect to a stationary base. In many applications, it is necessary for the stage to move to successive rest positions, with movement of the stage inhibited at each of the reset positions. The stiffener of the present invention allows for controlled movement of a stage along its direction of travel, with the stiffener inhibiting undesired movement when the stage is at a rest position. In one form, a stiffener extends in the direction of travel of the stage, with one end of the stiffener assembly mounted to the stationary base, and the other end urged into frictional contact with the movable stage by a force applicator. As a result, the stiffener is placed in frictional contact with the movable stage.

Abstract: A linear motion rolling guide unit and a damper apparatus used in this unit are described. Vibrations in both the direction of movement of the slider and vibrations in planes perpendicular to this direction of movement are effectively suppressed, and moreover, damping characteristics can be set as desired. This linear motion rolling guide unit includes a damping device with a plurality of damping apparatuses provided on a slider so as to be juxtaposed around a track rail, where the damping apparatuses include a liquid which is allowed to flow between sealed chambers to provide a damping effect.

Abstract: A linear motion guide unit assembly includes a linear motion guide unit, comprised of a rail, a slider and a plurality of rolling members interposed between the rail and the slider, a base having a first mounting surface to which the rail is fixedly attached, a table having a second mounting surface to which the slider is fixedly attached, and a misalignment absorbing plate or pivotal member interposed at at least one of the interface between the slider and the table and the interface between the base and the rail. With the provision of such a misalignment absorbing plate or pivotal member, an error in alignment between the first and second mounting surfaces can be absorbed automatically when assembled.

Abstract: A linear bearing assembly comprising sets of guides (ways) for guiding rolling elements (ball bearings or rollers) constrained within a cage. Typically, two sets of rolling elements and cages are used between a moving part and a stationary part. Each set has four resilient elements (springs) with one end of each spring anchored to the cage and with the other ends of two springs anchored to the stationary way or part and the other ends of the other two springs are anchored to the movable way or part. This arrangement provides a restoring spring force that gradually forces the cage to its correct tracking position. If the cage is tracking properly, the spring forces cancel out and there is no inherent rubbing in the restoring mechanism.

Abstract: Apparatus for force restoration of a bearing retainer uses a loop of resilient line around a pulley at an end of the bearing retainer. One end of the loop attached to a slide and the other end is attached to a base of a positioning table. A second loop is similarly attached at the opposite end of the retainer. These loops apply equal tension to both ends of the bearing retainer as long as the bearing retainer remains in its proper position without creep. When the bearing retainer moves out of position, unequal forces are exerted by the two loops, with a resultant force in a direction necessary to return the bearing retainer to its proper position. This controls the position of the bearing retainer relative to the slide. Provision for detecting and controlling broken force restoration lines may be included. In a second embodiment, a positioning table is disposed in a non-level position wherein gravity tends to produce bearing creep in a downward direction.

Abstract: In a stamping press, a support assembly for a die set including a cylindrical roller mounted on spring means of sufficient strength so that the cylindrical roller normally supports a die set slightly above a press's bolster surface for easy movement thereover but yieldable in response to strong mounting forces generated between the die and the press to permit engagement of the die against the bolster surface.

Abstract: A linear guide bearing apparatus includes a guide rail having an H-shaped cross section and an axially extending through bore. A slider having an I-shaped cross section is fitted into the through bore for movement in the axial direction. The slider is formed of a table member, a leg member, and a distance member formed of an elastic body and sandwiched between the table member and the leg member. The table member, the distance mebmer, and the leg member are integrally coupled by a bolt penetrating these members vertically. A clamping spring member is threadedly engaged with a low end of the bolt so that the elastic distance member is compressed vertically and the table member and the leg member are elastically pressed against the guide rail by the clamping spring member through the elastic distance member. As a result, balls inserted between the ball rolling grooves of the guide rail and the slider are preloaded at a constant pressure.

Abstract: A slide bearing support having one member slidable on another member and including a pair of parallel slide bearing assemblies disposed between the members.

Abstract: This invention relates to a friction drive mechanism for a motorized sliding door. The door is suspended by a first rail and its movement guided by a third rail. A second rail is flexibly coupled to the first and biased against a motorized driving roller by a simple tensioning mechanism. The tensioning mechanism maintains the friction contact between the driving roller and the second rail. The flexible coupling joining the first and second rails compensates for any misalignment in the mounting of the componentry. The flexible mounting also allows for the door to be driven around curves.

Abstract: A spring actuated guide system for a top driven drilling machine. Rollers for guiding the drilling machine are mounted onto springs which urge the rollers into contact with support surfaces on parallel tracks within a derrick. If the tracks become misaligned, the springs allow for the misalignment with low roller loads thereby providing limited rotational movement of the drilling machine relative to the tracks. Premature failure of the roller bearings is prevented and wear on the rollers and tracks is reduced.

Abstract: Two carriages are roller mounted to allow relative motion between them while maintaining precise relative positioning. Rollers engage precision ground spaced surfaces of a C-shaped hangar configuration, and wear compensation is provided by a spring bias arrangement maintaining conformity between the rollers and guide grooves in the underside of the rails.