10335 results about "Idler-wheel" patented technology

A deposition modeling system incorporates a drive mechanism to feed a strand of filament to create a model. The drive mechanism comprises a pivot block that is rotatably connected to a fixed block and a motor that rotates a drive shaft. A drive roller is connected to the drive shaft and an idler roller is connected to an idler axle that extends from the pivot block in a substantially perpendicular direction to the direction of rotation of the pivot block with respect to the fixed block and in a substantially parallel direction to the drive shaft.

The present invention is a wrist mechanism and a method for making robotic devices in which the transmission of motion, force and/or torque around a revolute joint can be accomplished without coupling. This construction allows mounting the actuators on the base or lower elements of a mechanism, so that only linkage elements move the end-effector. Thus reducing inertia of the moving elements and increasing performance of the device. The decoupled motion of the end-effector or links is achieved by routing their transmission cables around idler pulleys placed parallel to the joint rotation axis on an optimal position such any stretch on the transmission cable is minimized. In particular, this construction can be use for robotic surgical tools that have two independently driven jaws, decoupled and orthogonal from its articulating wrist.

A cable handling system mounted to a mobile robot to dispense and retrieve cable at zero tension includes a cable reel drive and a downstream tension roller drive that includes an idler. As a cable passes through the tension roller drive, position along the length of the cable and/or the cable speed is monitored accurately by a sensor attached to the idler. A system controller in communication with the sensor controls the cable reel drive and the tension roller drive for dispensing and retrieving cable downstream of the tension roller drive.

An apparatus that provides for rotation about two axes orthogonal to each other includes a gimbal having two arms adjoining a portion that is mounted to a base for rotation about a first axis. A shaft defining a second axis orthogonal to the first pivotally couples a mounting plate to the arms. The mounting plate has an arcuate edge with first and second parallel grooves therein adapted to receiving a drive cable. A drive cable that is engaged with a drive pulley is aligned by at least one idler pulley with the first and second grooves of the mounting plate. The drive cable has opposing free ends that are received in the first and second grooves of the mounting plate. A motor is coupled to the drive pulley for controlling the drive cable travel, to accordingly rotate the mounting plate to provide for orientating a device in a desired direction.

The invention relates to an electric car battery box, which comprises a battery, an inner box body, an outer box body and an emersion slideway; wherein, the slideway is arranged between the inner box body and the outer box body and comprises an upper slideway and a lower slideway; the upper slideway and a framework of the inner box body are welded together; the lower slideway and a framework of the outer box body are welded together; the upper slideway is inserted in the lower slideway to form drawer type assembly and disassembly of the battery; the upper slideway comprises a plurality of idler wheels; while the lower slideway comprises a lower slideway slot; a plurality of idler wheels of the upper slideway can move in the lower slideway slot. The battery box of the invention realizes the fast assembly and disassembly of the whole battery; which is convenient to be maintained, enlarges the continuous running mileage and is suitable for fission charging.

An endless track assembly that mounts to a wheeled vehicle. The assembly provides 1) a track suspension having fixed or adjustable, independently biased sets of idler wheels to vary the track contour without affecting track tension, 2) an eccentric bearing housing at a drive sprocket controls track tension, 3) a contoured peripheral edge at the drive sprocket prevents ice and mud buildup, 4) rubber-coated, plastic idler wheels facilitate track movement, 5) a multi-vehicle compatible adapter mounting plate accommodates a variety of vehicles, 6) a rotation limited torsion coupler and/or rotation limiting coupler arms prevent track contact with the vehicle, 7) a locking steering arm coupler prevents loss of steering control, and 8) shaped track lugs and channels clear and direct debris away from the track suspension and drive assembly. The improved suspension particularly supports sets of idler wheels in pivotal relation to the track support frame and resiliently biases a pre-tensioned rocker arm that links adjacent suspension arms mounted to the adjoining idler wheels. Suspension arm movement induces expansion and contraction of tension springs coupled to the rocker arms to augments shape changes at the track contact surface to optimize traction and steering control.

A mid-wheel drive power wheelchair for use by handicapped and disabled persons is provided having a frame, a seat supported by the frame, a pair of drive wheels supported on the frame under the seat, drive means for causing rotation of the drive wheels, power means for supplying power to the drive means, a rearward idler wheel, a forward anti-tip device and a resilient suspension supporting the forward anti-tip device, the suspension being attached to the drive means rearward of the front portion of the frame.

The specification discloses a portable spectrophotometer (10) providing improved movement and control of the sample (S) during analysis. The unit (10) includes a base (12) and an upper assembly (14) supported on the base (12) for floating movement. Both a spectral measurement engine (20) and drive rollers (104) are contained within the upper assembly. The base (12) includes independently suspended idler rollers (16), and the drive rollers (104) engage the idler wheels (16), so that at least a portion of the weight of the upper assembly (14) is borne by the engaging drive rollers (104) and idler rollers (16). The upper assembly (14) therefore floats up and down with samples (S) of varying thickness moving between the rollers (104 and 16). Additional upstream idler rollers (18 and 24) on the base and the upper assembly engage one another and bear a portion of the weight of the upper assembly (14) to create tension in opposition to the drive rollers (104) to hold the sample (S) taut. A planar media guide (130) is located on the underside of the upper assembly (14) and surrounds the spectral engine (20) to engage the sample (S) and reduce flexing and bowing of the sample (S). A manually actuated backer (30) is supported by the base (12) to selectively present to the spectral engine (20) one of two areas (52a and 52b) with different reflective properties. The unit (10) may include a first light source (21) in the spectral engine and a second light source (60) in the backer (30) so that the spectrophotometer (10) is capable of both reflective and transmissive analysis.

A continuously variable planetary gear set is described having a generally tubular idler, a plurality of balls distributed radially about the idler, each ball having a tiltable axis about which it rotates, a rotatable input disc positioned adjacent to the balls and in contact with each of the balls, a rotatable output disc positioned adjacent to the balls opposite the input disc and in contact with each of the balls such that each of the balls makes three-point contact with the input disc, the output disc and the idler, and a rotatable cage adapted to maintain the axial and radial position of each of the balls, wherein the axes of the balls are oriented by the axial position of the idler.

Mechanisms and methods for clamping force generation are disclosed. In one embodiment, a clamping force generator system includes a permanent magnet bearing coupled to a traction ring and to a torque coupling. The traction ring can be provided with an electromagnetic bearing rotor and the torque coupling can be provided with an electromagnetic bearing stator. In some embodiments, a mechanical load cam, a permanent magnet bearing, and an electromagnetic bearing cooperate to generate a clamping force between the traction rings, the power rollers, and the idler. In other embodiments, a series of permanent magnet bearings and a mechanical bearing configured to produce a clamping force. In one embodiment an electromagnetic bearing is coupled to a control system and produces a specified clamping force that is associated with a torque transmitted in the transmission during operation. In some embodiments, a mechanical load cam produces a clamping force proportional to torque, while a permanent magnet bearing provides a minimum clamping force.

A circuit board plug-in subassembly with an LED indicator light of the invention comprises circuit board equipment (9) and an interface device (8) which is arranged at the left side of the circuit board equipment (9). The LED indicator light (10) is arranged at the top of the circuit board equipment (9), and the interface device (8) comprises a shell which is composed of an upper outline part (81) and a lower outline part (82). A contact pin array (99) is arranged at the part of the plate of the circuit board equipment (9) adjacent to the inner side of the shell and is used for engaging with a jack array (72) which is inserted into a plug (7) between the upper outline part (81) and the lower outline part (82) of the interface device (8), and the upper outline part (81) and the lower outline part (82) are respectively engaged with idler wheels (80), which are arranged on an upper sliding block subassembly (83) and a lower sliding block subassembly (84).

In a belt drive of an internal combustion engine, a two-arm belt tensioner has a fixed tubular supporting portion; a first and a second arm fitted to the tubular supporting portion to rotate about a common hinge axis, and supporting respective idle wheels cooperating with respective branches of the drive belt; and an elastic device for forcing the arms towards each other; the elastic device having a torsionally elastic elongated member extending through the tubular supporting portion, coaxially with the hinge axis, and having respective opposite end portions projecting outwards of the tubular supporting portion; the end portions being fitted with respective end caps, one of which is fitted directly with one of the arms, and houses one end, connected integrally to the other cap, of the other arm.

A small unbalanced magnet assembly is scanned in a retrograde planetary or epicyclic path about the back of a target being plasma sputtered including an orbital rotation about the center axis of the target and a planetary rotation about another axis rotating about the target center axis. The magnet assembly may pass through the target center, thus allowing full target coverage. A geared planetary mechanism may include a rotating drive plate, a fixed center gear, and an idler and a follower gear rotatably supported in the drive plate supporting a cantilevered magnet assembly on the side of the drive plate facing the target. The erosion profile may be controlled by varying the rotation rate through the rotation cycle or by modulating the target power. A second planetary stage may be added or non-circular gears be used. Auxiliary electromagnetic coils may create a focusing magnetic field.

A modular conveyor belt (20) constructed of a series of rows (24, 25) of belt modules hingedly interlined by tapered oblong hinge pins (22) and suitable for following straight or curved conveyor paths. Aligned slots (30) formed in one set of hinge elements between successive rows are elongated in the direction of belt travel to allow the belt to fan out in turns. Fan-shaped apertures (38) formed in interleaved hinge elements of an adjacent row and aligned axially with the slots to admit a hinge pin (22) allow the belt to pivot at the hinge to articulate about a sprocket (181) or idler (186) or to enter and exit an incline. The oblong hinge pin has a first region at a first end (88) with a constant long axis to share the belt load among hinge elements encompassing the first region on straight runs. A second region of the hinge pin at an opposite second end (89) has a tapered oblong cross section, the long axis of which increases with distance from the second end to define a variable pitch and to spread the belt tension among the hinge elements at the outside of a turn encompassing the second region. Each belt row can be constructed of individual links stacked together on a support element (45) and retained by fasteners (52) or of integrally molded modules each comprising a transverse connecting member from which leading and trailing hinge elements extend. Accessory attachments, such as teeth (160) or sideguards (150), can be added to the belt. The belt can be driven by a cog, a roller chain, or other driving means driving lugs (172) extending from the bottom of the belt. The drive surfaces of the lugs can be obliquely arranged for better load sharing.

A method for controlling operational sequencing of gears in an automatic transmission (102) which has been built in an auxiliary mode. In the case of such a shifting transmission it is possible that during the engagement of its transmission gear stage, impact noises or contact noises are present in the shifting procedure. This can occur by the generation of a tooth-on-tooth positioning between the toothing of a sliding collar (126) and the come-along toothing of an idler gear (130, 132). Provision is made for the control of the activation movement of the sliding collar (126) carried out in such a manner that an activation condition impact of the transmission parts, which are partakers in the shifting associated transmission part onto other transmission parts with the least possible impact force and/or with a least possible impact noise level.

The invention discloses a square tube multiple face synchronous derusting machine. The derusting machine comprises an inverted-U-shaped rack and is characterized in that an upper motor is fixed to the middle of the upper wall of the inverted-U-shaped rack, and an upper horizontal rotating wire brush is fixed to the lower end of a shaft sleeve of a motor spindle, a fixed belt wheel at the upper end of the spindle is connected with driven shafts outside the left wall and the right wall of the inverted-U-shaped rack for transmission, and the middle of the driven shaft on the left and the middle of the driven shaft on the right are respectively meshed with a shaft end bevel gear of a transverse rotating shaft for transmission through a bevel gear; each transverse rotating shaft is provided with a transverse shaft sleeve connected with the transverse rotating shaft in a matched mode through a spline, and an upper perpendicular face rotating wire brush is fixed to the inner end of each transverse shaft sleeve; idler wheels are arranged at the bottom end of the inverted-U-shaped rack; synchronous rotation of the horizontal rotating wire brush and the perpendicular face rotating wire brushes is achieved through one motor, and thus the upper surface and the two side faces of a square tube can be polished and derusted synchronously. Thus, dust on the surface of the square tube can be cleared away fast with the derusting machine, energy is saved, labor efficiency can be improved, and the using effect of the square tube is improved.

The invention discloses a rail type intelligent machine transporting truck, comprising a frame, idler wheels located on the frame, a storage box located at the top of the frame, a supporting board, a lifting mechanism connected between the supporting board and the frame, a primary rotation board, a primary rotation mechanism connected between the primary rotation board and the supporting board, a primary translation board, a primary translation mechanism connected between the primary translation board and the primary rotation board, a secondary rotation board, a secondary rotation mechanism connected between the secondary rotation board and the primary translation board, a secondary translation board, a secondary translation mechanism connected between the secondary translation board and the secondary rotation board, and an executing mechanism connected on the secondary translation board, wherein a storage box is placed in the storage box. The rail type intelligent machine transporting truck provided by the invention replaces the conventional manual goods carrying manner, so that the human labor is reduced, and the production efficiency is improved. With the adoption of the two levels of rotation mechanisms and the two levels of translation mechanisms, the rail type intelligent machine transporting truck can expand the journey and increase the freedom degree. The rail type intelligent machine transporting truck can check more goods due to the vehicular storage box, so that the working efficiency is improved.