Abstract: An adjustable linear motion carriage assembly is configured to ride on a rail (34, 220) with generally parallel opposing faces in a linear motion of travel along the central axis of the rail. The carriage assembly includes at least one carriage member (32, 140, 160, 261) comprising a frame (40, 150, 170, 270) supporting a plurality of bearings (62). The carriage member can be used singularly or assembled together to provide control over desired degrees of freedom of the carriage assembly. The individual carriage member frames can flex by elastic displacement near the bearing location (122, 142, 162) to accommodate rails with minor variations in width.

Abstract: A high pressure pump including a linear actuator having a servo motor to axially rotate a hollow rotor shaft in alternating directions, the servo motor having a stator positioned co-axially around the hollow rotor shaft with an interior of the rotor shaft being co-axially coupled to a drive member to convert axial rotation into reciprocal displacement, the drive member being constrained against linear movement and supporting a shaft. At least one piston is coupled to the shaft and the piston is arranged within a cylinder to define a pumping chamber, whereby alternating rotation of the rotor shaft causes reciprocal linear displacement of the piston to pressurize fluid in the pumping chamber. A drive mechanism includes a controller coupled to a servomotor and an encoder to measure movement of the hollow rotor or output shaft and send a feedback signal proportional to the movement to the controller.

Abstract: An extension arm for attachment to a resistance welding hand piece is disclosed. The extension arm may include an elongated main body extending between a first end and a second end. The first end of the elongated main body may be attachable to the hand piece such that the second end of the elongated main body is spaced apart from the hand piece. The extension arm also may include an electrode extending from the second end of the elongated main body. The electrode may be in electrical communication with the hand piece by way of at least one electrical pathway.

Abstract: The transport device for conveying products has several symmetrically configured, movable carriages having inverted U-shape, each carriage having permanent magnets, also has an endless guide rail for guiding the carriages and a linear-motor drive device to drive the carriages. Each symmetric half of each carriage has three running rollers projecting inwardly from sidepieces of the carriage. The three running rollers of the first half rest on first and second guide surfaces on a first side wall of the guide rail, and the three running rollers of the second half rest on first and second guide surfaces on the second side wall of the guide rail. Each guide surface is arranged at an acute angle to a longitudinal center plane of the transport device, and the two guide surfaces of each side wall are at an angle of 80° to 100° to each other.

Abstract: A roller bearing sub-assembly can include a first mounting portion, a second mounting portion spaced apart from the first mounting portion, a first roller disposed between the first and second mounting portions and straps wrapped partially around different portions of the first roller. The first mounting portion, second mounting portion, first roller and straps are configured such that the first and second mounting portions are moveable relative to each other along a selected direction for a distance that is approximately equal to a circumference of the first roller in opposite directions from a mid-stroke position. Linear roller bearing assemblies and methods of forming linear roller bearing assemblies are also disclosed, as are multi-cylinder Stirling engines and a thermal energy recovery system.

Abstract: A guide element for a corrugated tube is formed as a ring. At least one rotating roller is integrated in the interior of the ring such that the at least one rotating roller contacts the corrugated tube when the corrugated tube is passed through the ring. The at least one rotating roller rotates with a movement of the corrugated tube using the guide element. The guide element enables low-wear control of corrugated tubes.

Abstract: Linear roller bearing assemblies can include a hub, a collar around the hub and roller bearing sub-assemblies disposed in a radial pattern around the hub. The roller bearing sub-assemblies can guide linear movement of the hub relative to the collar along a selected direction. Each roller bearing sub-assembly can include a roller and straps wrapped partially around the roller. Each strap is connected to at least one of the hub and the collar. And at least one of the straps can be connected to the roller while at least one of the straps can be circumferentially free of the roller. The hub and collar are moveable relative to each other along the selected direction for a distance that is approximately half of a circumference of the roller. Methods of forming linear roller bearing assemblies are also disclosed, as are multi-cylinder Stirling engines and a thermal energy recovery system.

Abstract: A motor vehicle includes at least one displaceable roof section, which when closed abuts the windscreen frame at the front of the vehicle and whose lateral outer areas respectively abut a support. The supports can be relocated in lateral columns of the windscreen frame, where the ends of the supports at the front of the vehicle and the section of the supports lying in the exit region of the lateral column are guided without play in a housing channel that is formed by the respective lateral column, by a respective roller bearing, at a defined distance from the wall of the receiving channel. An optimized guidance system and stability are achieved., if the end of the support at the rear of the vehicle is held in a central manner in a locking device on a rear roof section. The locking device is configured with a cylindrical fastening element comprising a centering recess, in which a rocker-mounted locking lever, designed to engage in a cavity of the support, is located.

Abstract: The roller can be suitably used for a guide section of a moving unit capable of moving a heavy matter without enormously increasing rigidity of a rail and is capable of reducing weight and production cost of the moving unit. The roller comprises: a tubular core having an outer circumferential face, in which a groove section is formed; and a resin coat section continuously coating the outer circumferential face of the tubular core, an inner face of the groove section, both ends of the tubular core and at least parts of an inner circumferential face thereof.

Abstract: A roller bearing for linear movements has two guide members arranged coaxially relative to each other between which there are provided races for roller members extending in the longitudinal direction. The roller members are biased in radial direction by at least one elastic element. The races for the roller members are shaped as guide surfaces directly at the two guide members, and the elastic element is provided radially offset with regard to the guide surfaces and acts by means of webs only indirectly onto these surfaces, by being subjected to a radial clamping force of a further annular element.

Abstract: A guide apparatus (1) slidably supports a shaft member (2) and a column (3) relative to each other. The column (3) has a through hole (3a) formed therein and the shaft member (2) penetrates the through hole (3a). In the column (3), there is provided a slide mechanism (5) formed of a plurality of cylindrical rolling elements (50) adapted to roll axially on an outer circumference (2a) of the shaft member (2). The column (3) is formed of a plurality of split members (31, 32, 33, 34) that are divided on sectional planes each perpendicular to the axial direction of the column (3). A plurality of positioning pins (9) are provided on each contact surface of the adjacent split members (31, 32, 33, 34). The adjacent split members are centered or positioned relative to one another by the positioning pins (9).

Abstract: A guide device includes a shaft member and a column. The column has a through hole formed therein and the shaft member penetrates the through hole of the column. A plurality of pockets are formed on an inner circumferential surface of the through hole of the column. The pockets are disposed on a plurality of cross sectional planes that are perpendicular to an axial direction of the column. In each pocket, there are provided an outer race or roller rolling axially on an outer circumferential surface of the shaft member, and a supporting shaft supporting the outer race rotatably. The column is formed of a plurality of splittable members that are divided on cross sectional planes each perpendicular to the axial direction of the column and that pass through a center line of the supporting shaft. The adjacent splittable members are centered by the supporting shaft.

Abstract: A linear bearing that can be used in applications requiring high rigidity, such as guide posts of presses and molds is composed of a guide shaft, an outer cylinder capable of moving in the axial direction relatively to the guide shaft outside the guide shaft, numerous rolling elements interposed between the guide shaft and the outer cylinder, and a cage provided between the guide shaft and the outer cylinder for retaining said numerous rolling elements disposed in the circumferential direction and in the axial direction, characterized in that each of the rolling elements is a roller having a convex circular arc surface of revolution formed on the cylindrical surface thereof, that the inner surface of the outer cylinder is formed as a cylindrical surface, that the outer surface of the guide shaft is provided with axially extending guide grooves, each having a concave cylindrical surface, corresponding to the respective rows of rollers disposed in the axial direction, that the radius of the circle constituting

Abstract: Rotatable plastic rollers are produced by either injecting between a roller shaft and an outer running roller layer a thermoplastic material which, during cooling down, shrinks toward the roller shaft and away from the outer running roller layer on account of a contraction in volume or, in the multi-component injection-molding process, by first injecting the outer running roller layer and then injecting between the latter and the roller shaft a thermoplastic material which then likewise shrinks toward the roller shaft and away from the outer running roller layer. The process produces plastic rollers comprising an inner running roller layer (2), which is bonded solidly with the roller shaft (1), and an outer running roller layer (3), which can rotate freely with respect to said inner layer by means of a sliding gap (6). The roller shaft may optionally also be sheathed with a thermoplastic elastomer. This may take place in the same process during the multi-component injection molding.

Abstract: A linear bearing is provided which can allow a shaft to relatively reciprocally move with respect to an outer race in the axial direction, and also to rotate in the circumferential direction. In the linear bearing of the invention, an outer race supports a shaft via balls which are retained by a retainer. A push ring is fitted to the outer race so as to be reciprocable in the axial direction. Three coil springs which are arranged at the intervals of 120° in the circumferential direction are contractedly interposed between a lid fixed to the outer race and the push ring, so as to press the push ring toward the retainer. Spring pins which protrude in the axial direction are fixed to the lid. Tip ends of the spring pins are reciprocally fitted into holes formed in the push ring, thereby preventing the push ring from rotating.

Abstract: The inner surface of an outer cylinder is made an outer cylinder raceway having a simple circular sectional configuration having a radius of curvature. On the outer circumference of an inner cylinder, a plurality of grooves having the radius of curvatures dimensioned equally to the aforesaid radius of curvature are arranged extendedly at the same pitch. The outer circumference of barrel shaped rollers inserted between the grooves and the inner surface of the outer cylinder is dimensioned equally to the aforesaid radius of curvature. The barrel shaped rollers and the inner and outer raceways constitute linear contacts, thus enhancing the ability of the load resistance to make it possible to prevent the peeling off, cracking, and other damages from taking place by the heavy load to be applied.

Abstract: A shock absorber comprises a tube with a cavity therein and a piston rod extending through one end of the tube. At this end of the tube there is provided a gasket. Moreover, for guiding the piston rod, there are provided guiding rollers. These guiding rollers are distributed about the axis of the tube and engage the piston rod by a concave circumferential face, the curvature of which substantially corresponds to the curvature of the piston rod.

Abstract: A coil spring has a series of short length plastic rollers received on the spring coils so that the rollers engage either a cylinder wall in which the spring works or a rod received through the spring, or both. The rollers act as roller bearings to prevent binding, wear and noise.

Abstract: This patent relates to pillow blocks, which are constructed to include one or more roller bearings disposed in tangential relation to the primary shaft at one or more positions around its periphery. Each roller bearing is mounted to rotate about its own stud, so that it acts as a cam follower. In some embodiments the roller bearings are disposed singly, or in pairs, in three positions spaced-apart 120 degrees around the periphery of the shaft. A particular feature of the invention is a device for fine tuning the tangential contact between a roller and the surface of the primary shaft by utilizing a flexible bearing support plate supporting at least one bearing. The plate can move radially to control the radial distance of the bearing.

Abstract: This patent relates to roller bearing self-aligning pillow blocks, which are constructed to include one or more sealed roller bearings disposed in tangential relation to the primary shaft at one or more positions around its periphery. Each roller bearing is mounted to rotate about its own stud, so that it acts as a cam follower. In some embodiments the roller bearings are disposed singly, or in pairs, in three positions spaced-apart 120 degrees around the periphery of the shaft. In other embodiments the bearings disposed to the right or the left of the center are in diametrically-opposite positions. Alternatively, in another embodiment, the rollers are disposed only in contact with the upper surface of the shaft at positions spaced-apart, say, 45 degrees.

Abstract: A reciprocating engine comprising a cylinder, a piston performing reciprocating movement within the cylinder, a crank shaft performing rotational movement, a connecting rod connected rotatably at its one end to the crank shaft and at its the other end to the piston, and rollers each mounted on the side portion of the piston, in which the piston is in rolling contact with the cylinder through the rollers.