Showing papers on "Drive wheel published in 1985"

Mig welder attachment for an electric hand drill

Abstract: A dielectric cover is detachably coupled, in enveloping fashion, about the motor casing portion of an electric hand drill of pistol form with a front portion extending beyond the drill shaft projecting from the front end of the drill casing The cover acts as a torque tube to support a right angle drive reduction gear mechanism which terminates in a drive wheel rotating about an axis perpendicular to the drill shaft axis and within a friction drive mechanism, completed by spring biased idler wheel pressing sidewise against the drive wheel Metal blocks mounted to the cover connect to one side of a DC source and a mount wire guide for guiding a thin wire first electrode into contact with and between the drive wheel and the idler wheel The wire electrode which is frictionally pulled from a spool borne by the cover feeds through a conductor tube of an electrode nozzle assembly The conductor tube receives an inert shielding gas which flows about the thin wire first electrode and the arc The variable speed drill uses the trigger mechanism to control wire electrode feed speed and thus the amperage of the weld arc, with workpiece functioning as the second electrode The hand drill drive unit and drive power source are electronically isolated from the arc power source

Hydraulically drive wheelchair

Abstract: A hydraulically actuated, energy efficient wheelchair utilizes a pair of identical wheelchair drive units, with each unit having a constant speed battery powered electric motor driving a hydraulic pump and associated hydraulic motor. Hydraulic fluid flow between each pump and its hydraulic motor is controlled by the operator through the use of a solenoid actuated proportional control valve to determine the speed and direction of rotation of the hydraulic motor. One of these hydraulic motors is mechanically coupled to each wheelchair drive wheel. Means are provided to discharge excess pressurized fluid upstream of the hydraulic motor so as to minimize the backpressure on the pump and to thereby conserve driving energy and increase battery life. A method for hydraulically driving the wheelchair is also disclosed.

Apparatus for the angular adjustment of a shaft, such as a camshaft, with respect to a drive wheel

Abstract: Apparatus for the angular displacement of a shaft, such as a camshaft, with respect to a drive wheel comprising a coupling having opposed cylinders by which an active relative displacement can be effected in opposite directions. The position of the shaft and of the drive wheel is determined by pulse transmitters and sensors and is evaluated in an electronic circuit for the determination of the angular displacement and its control.

Vessel having demountable submerged propeller unit

Abstract: The invention concerns a hull and a submerged propeller unit demountably fitted to the hull and continuously rotatable through 360° of azimuth relative to the hull to give full thrust in any required direction. An aperture in the hull is surrounded by a fixing flange to which extend a drive input shaft for the propeller unit and at least one steering drive shaft. At least one steering drive motor is mounted in the vessel and is connected to the steering drive shaft to effect rotation thereof. A gearbox casing of the propeller unit fits in the aperture with a circumferential flange releasably bolted to the fixing flange. A stem depends from said casing and is rotatably supported therein at its upper end to act as a steering tube for a propeller rotatably supported at its lower end. A steering gear wheel in said casing through which the stem passes and to which it is secured effects rotation thereof. Steering drive gear means rotatably supported in said casing in mesh with the steering drive wheel is releasably connected to said steering drive shaft so that operation of said steering motor rotates the propeller unit. A drive transmission shaft for the propeller extends through the stem is releasably connected at its upper end to the main drive shaft whereby when the propeller unit is dismounted from the vessel the steering gear wheel and the gear means are removed in the casing as part of the demountable propeller unit.

Acceleration slip controller

Abstract: PURPOSE: To achieve the optimal acceleration slip control at any time by calculating the friction factor of pavement and the slippage of drive wheel then correcting the driving force to be determined on the basis of said friction factor with correspondence to the difference between said slippage and the target slippage. CONSTITUTION: On the basis of the driving wheel slippage calculated through a calculating means M1 on the basis of the body speed and the circumferential speed of driving wheel, the rotation of a driving wheel M2 is controlled through a control means M3 such that the frictional force between the driving wheel M2 and the pavement will increase under acceleration. Here, the control means M3 is constructed such that it will calculate the friction factor M5 of pavement on the basis of the output from a body acceleration detecting means M4 and to calculate the maximum transmittable driving force M6 of the driving wheel M2 on the basis of said pavement friction factor. While it is constructed such that the maximum driving force is corrected M7 in correspondence with the difference between the driving wheel slippage and the target slippage to control a driving force regulating means M8 thus to transmit the maximum corrected driving force to the driving wheel M2. COPYRIGHT: (C)1987,JPO&Japio

Robot carrier structure

Abstract: A robot carrier structure constituted by a carriage movable on rails and supported on four wheels two of which are mounted on a driven shaft and two are idle wheels. Each drive wheel has a structure adapted to ensure a high adherence to the rail, particularly due to the provision of a pair of rings of elastomeric material in engagement with the rolling surface of the rail. Engagement means movable laterally on the rail are provided to increase the adherence of the drive wheels.

Manual propulsion apparatus for wheelchairs

Abstract: Apparatus for manually propelling wheelchairs includes a drive wheel which is mountable to a wheelchair in a manner which allows frictional rolling contact with a wheelchair propulsion wheel; a two-armed hand lever which is pivotally mountable to the wheelchair so as to be manually accessible to the wheelchair occupant; and a drive mechanism, preferably including a reversible-drive ratchet, which is operably connected to the hand lever and operably attached to the drive wheel so that a wheelchair occupant may propel the wheelchair by reciprocally pivoting the hand lever. The apparatus can be supplied in kit form, and the hand lever and the drive wheel may be mounted directly to a side panel so that the apparatus may be substantially installed by securing the side panel to the wheelchair. A method for retrofitting wheelchairs in this manner is also disclosed. Additional features include pivot handles for disengagingthe drive wheel, a therapeutic grasping knob, a ratchet selector dial, a hand lever pivot mount which allows adjustment of leverage and orientation of the accessible hand lever arm, and an adjustable drive bar for providing a fit for wheelchairs of various lengths. Preferably there is a drive wheel, a hand lever, and a drive mechanism for each of the two propulsion wheels on conventional wheelchairs. An expansion shaft is disclosed for connecting the drive wheels so both will rotate by pivoting one hand lever. The expansion shaft can be adjustable in length to provide a fit for chairs of various widths.

X-Y position controller having axially-inclined transducer members

Abstract: A mouse (X-Y position controller) having axially-inclined transducer assemblies--preferably almost perpendicular to the surface on which the mouse is operated--for a compact, greatly simplified structure. The drive wheel of such an assembly can then be small relative to the transducer disk of that assembly, with considerably reduced precision requirements for location of indicia on the disk. Moreover, by use of a pair of spaced ring magnets urging the drive wheel toward the operational surface for the mouse, significant contact force against the operating surface is provided while eliminating substantially all of the friction attendant upon use of even a so-called antifriction thrust bearing. Due to the magnitude of the available contact force, the drive wheel can be of a hard and durable material rather than an elastomer and still provide improved tractional characteristics even on such a difficult operating surface as, for example, oiled teflon. Lastly, the arrangement precludes possible contamination of interacting moving components, partly because there are no interacting moving members but mostly because nothing that touches the potentially dirty operating surface ever enters the mouse assembly.

Endless articulated steel band vehicle for off-road services

Abstract: An off-road vehicle is equipped with an endless articulated steel band drive system including a drive wheel, a plurality of idle wheels and an endless belt extending around the drive wheel and the idle wheel. A back slider plate extends along the inner surface of the endless belt to urge the ground contact surface of the endless belt against the ground. The leading portion of the back plate rises upwardly at an angle of with respect to the ground. One of the idle wheels is rotatably mounted to the rear end of the back plate and the back plate is mounted to the vehicle frame by a leaf spring.

Optical measuring apparatus

Abstract: PURPOSE:To achieve a lower cost and a higher reliability, by moving a focusing section connected to an optical fiber by a running means. CONSTITUTION:A detector section 5 is provided alongside one end of support member 6 comprising an H steel or the like, a focusing section 2 on a running means 7 and an optical fiber 3 is connected to the detector section 5. Rails 8a and 8b are provided on both sides of the member 6, a belt 9 which is driven with drive wheels 9a and 9b is provided on one side thereof and three running wheels 10a-10c provided inword on both sides of the means 7 are provided on the rails 8a and 8b while the means 7 is connected to the belt 9. Then, the drive wheel 9a or the like is driven with a motor or the like to run the belt 9 and subsequently, the running wheels 10a-10c on the means 7 are moved on the rails 8a and 8b to scan an object 1 to be measured with the focusing section 2 provided on the means 7, whereby optical character of water or the like is detected with the detector section 5 at points. This enables a smaller size and a higher reliability of the equipment.

Positive drive assembly for automatic, rail-based transportation system

Abstract: An automatic, rail-based passenger and cargo transportation system which is particularly well suited for use as a moderate speed people mover is disclosed. The system includes a rail structure on which passive carrier cars are movably supported from opposite sides of the rail. In one aspect a plurality of drive wheels are rotatably mounted to the rail assembly and span across the width of the rail structure so as to drive the carrier cars along the rail in opposite directions on opposite sides of the rail. In another aspect of the invention, the carrier cars are cantilever supported from the sides of the rail so as to cause gravity biasing of the cars inwardly such that a shoe is forced into driving engagement with alternating toothed and smooth drive wheels mounted in the rail framework and sufficiently spaced so that only one toothed drive wheel interengages with the shoe assembly at any time. The people mover system further includes power transmission means which couples a plurality of the drive wheels and drive motors together for operation as a unit to provide ease of control of the multi-carrier unit system and redundancy against motor failures. Alternative drive wheel configurations and locations are disclosed, as are alternate power transmission assemblies and methods for driving passive or unpowered carrier cars along the rail structure.

Control method of preventing slip of power train

Abstract: PURPOSE:To make drive force maximum, by obtaining a slip rate in accordance with the difference between the rotational speed of drive wheel and a wheel rotational speed which is obtained from a vehicle running speed, and as well by controlling the output torque of a power train in accordance with the deviation between the thus obtained slip rate and a desired slip rate. CONSTITUTION:Rotational speeds 142 through 145 of left and right, and front and rear wheels are stored in predetermined address areas in a RAM1430 by means of an input interface circuit 1200. On the basis of these values a CPU1300 calculates the averaged rotational speed VF of the two front wheels, and as well calculates the averaged rotational speed VR of the two rear wheels. A slip rate is calculated in accordance with the thus calculated values, and discrimination is made on whether this slip rate S is a desired slip rate or not. When the slip rate S is not equal to the desired slip rate upon starting, the CPU calculates the deviation DELTAS therebetween, and also calculates the data DELTAtheta of correction amount for the throttle opening in accordance with the deviation. Further, the CPU issues, in accordance with this correction amount data DELTAtheta, an air amount control signal 220 for controlling the output torque of the engine.

A drive mechanism for axial movement of a rod, in particular an infusion pump

Abstract: In a drive mechanism of the type where a rotating drive wheel deforms and partly works into engagement with a rod of deformable material to axially displace the rod as the drive wheel rotates, the drive wheel is a wheel (15) which is provided with worm threads (17) and whose axis of rotation is substantially parallel with the said rod (11). According to the invention, such a structure results in an unprecedented great metering accuracy with indication of very small doses from e.g. an injection syringe (13) whose plunger (14) is driven by said rod (11). The invention is characterized in that the worm threads work into the deformable material of the rod under the action of essentially completely continuous forces. The preferred embodiment comprises two worms (in Fig. 4 behind the worm (17) on the opposite side of the rod (11) driven by their respective shafts (19), which are driven by a common worm (22) via helical toothed wheels (21). An antibackup roller (12) placed in an opening cover (27) serves to press the rod (11) down between the two worms so as to provide some wedge effect. Complete balance in the mechanism is obtained because the two worms rotate in the opposite direction.

Electric overhead trolley conveyor

Abstract: An electric overhead trolley conveyor is described whereby electric trolleys can drive automatically with reduced velocity in inclining, declining or vertical sections or in selected horizontal sections of the rail without a special control of the electric motor or the drive. For this purpose, chains or racks are provided in sections for reduced speed which mesh with sprocket wheels or gears of the electric trolleys. In the other areas of the rail the electric trolleys are driven by a drive wheel. The circumferential velocity of the drive wheel is greater than the circumferential velocity of the sprocket wheel or gear. In the slow movement sections the circumferential velocity difference is compensated by the drive wheel which has an outer ring, that may rotate relative to an inner hub which is fixedly connected with the drive shaft.

Vehicle fluidic drive circuit

Abstract: There is provided an improved fluidic drive circuit for a fluid powered vehicle arranged to limit flow to an unloaded drive wheel. A restricting orifice is mounted in parallel with a pressure sensitive control valve to provide fluid power to the motor. A trickle flow is provided through the restricting orifice to maintain a minimum pressure to the fluid motor. The control valve, sensitive to pressure at the fluid motor, provides full flow only when the pressure in the fluid motor is sufficient.

Power transmission in vehicles

Abstract: In a vehicle in which the power of a power plant carried on a body frame is transmitted to a driving wheel through a wrapping transmission mechanism, a pivot shaft is extended laterally of a vehicle body and secured fixedly to a body frame, the pivot ends of the swing arm for journaling the driving wheel is pivoted to the pivot shaft, the hanger portion of the power plant is also pivoted to the pivot shaft, the output shaft of the power plant being provided concentrically on the pivot shaft relatively rotatably, to which output shaft is secured a drive wheel of a wrapping transmission mechanism.

Auto wheel snow scraper

Abstract: A scraper located in front of each automobile drive wheel to remove snow on the ground, including a scraper blade on a lower end of a piston rod extending from a vertical hydraulic cylinder supported on the vehicle chassis.

Rigid wire saw wheel apparatus for very hard materials

Abstract: An apparatus for the accurate sawing of very hard materials is described, comprising a rigid circular wire saw and an assembly providing support, guidance and drive for the wire saw. A plurality of saw-guides constructed of guide wheels having a rubber circumference bearing surface, are used to support and guide the rigid circular wire saw. In the preferred embodiment, a disk shaped drive wheel, driven by an electric motor, applies frictional pressure and linear impetus to the wire saw, causing it to rotate at high speed. The apparatus may be scaled in size to accommodate any given maximum thickness of workpiece material.

Mechanical means for preventing the twisting of a fiber optic cable while temporarily storing the same

Abstract: A mechanical figure eighting apparatus is disclosed which permits a fiber optic cable to be deposited on the ground in a random or figure eight configuration. Fiber optic cable is passed over a rotating drive wheel and is held in frictional engagement with the peripheral rim portion of the drive wheel by a pressure wheel mounted thereover. The fiber optic cable is passed or pushed outwardly through a tubular member extending outwardly from the drive wheel. The fiber optic cable is deposited on the ground in a random fashion or figure eight fashion as it is discharged from the tubular member.

Standard pallet conveying system for longitudinal and transverse conveying

Abstract: Standard pallets 1 with the basic measurements 800 . 1200 7 and 1000 . 1200 8 can be conveyed transversely on roller paths 6, by being dragged by snapper cams 3 with stroke lengths B. The stroke length corresponds to the distance between the snapper cams and is based on the maximum pallet width. See Figure 7. The pallets can also be conveyed longitudinally on the same paths with a snapper cam distance B1, according to Figure 8. If both sizes of pallet are to be conveyed simultaneously, a third strand of rollers is to be provided, whose snapper cams are also operated by the conveying mechanism of the main roller paths. The pallets are transported by means of a drive mechanism for the stroke length B, which consists of a guide carriage 18 with snapper cams 3, which advances the pallet by the length of a stroke in advance mode by means of an endless chain 25 via tensioning wheels 27, idler wheels 28 and the drive wheel 29 of the drive shaft 30. In reverse mode, the snapper cams are simply returned to their starting position. Figure 17 shows the position at the start of conveying, while Figure 18 shows the position after conveying. The front pallet in each case is transferred to the section of the group travelling in front. Additional guide carriages can be connected to the guide carriage 18 via tow bars and connecting rods with a length equal to B or B1, making it possible to convey pallets in groups with one drive. The length of the group can be adapted to the driving power. Conveying gaps can be filled by subjecting a group to a number of strokes. At the transfer points ... Original abstract incomplete.

Device for driving cars or chairs of a gondola-lift or chair-lift in stations

Abstract: A preferred embodiment for a detechable gondola lift is disclosed in which carraiges on a closed circuit are detached from the circuit upon entering an end station and coupled to a semi-circular section before being recoupled onto the circuit upon exiting the end station The semi-circular section has a drive wheel with a first drive mechanism on its periphery for driving the carriages over the semi-circular section The first drive mechanism is located at regular intervals and driven at a predetermined first speed to impose a regular flow rate to the carriages leaving the semi-circular section and a regular distribution of carriages on the circuit The semi-circular section also includes a second drive mechanism for imparting a slightly different speed to the carriages from that imposed by the drive wheel One of the drive means has priority to impose a predetermined flow rate to the carriages leaving the semi-circular section In another embodiment, the semi-circular section is divided into two straight rails and a circular rail on the drive wheel In addition, the invention contemplates using two coaxial wheels: a drive wheel with pins and a support wheel The pins may be fixed or retractable

Monitor device in antiskid control system

Abstract: PURPOSE:To prevent an erroneous detection of abnormality, by presuming that, if any one of wheel speeds is lower than a reference wheel speed which is the wheel speed of a driven wheel by a predetermined value, a wheel speed sensor provided for the corresponding wheel is regarded as being abnormal. CONSTITUTION:When a wheel speed sensor 1a on a driven wheel FR side is abnormal, the output of this sensor becomes zero, and accordingly, an output signal from a wheel speed detecting circuit 2a also becomes zero. Accordingly, the difference between an output signal from a wheel speed detecting circuit 2b on the driven wheel FL side and the output signal from the wheel speed detecting circuit 2a becomes larger than delta, and therefore, a comparator circuit 3a issues an output signal to turn on a warning lamp 8. Further, in the case of that a wheel speed sensor 1c for a drive wheel RR side becomes abnormal, the difference between output signals from the wheel speed detecting circuits 2b, 2c also becomes larger than delta, and therefore, the comparator circuit 3a issues an output signal to turn on the warning lamp 8. Further, when an abnormality takes place in a wheel speed sensor 1b corresponding to a driven wheel FL side, a sensor failure detecting circuit 9 issues an output signal to turn on the warning lamp 8.

Arrangement for the adjustable propulsion of large masses

Abstract: Between an output shaft (40), which drives for example a drive wheel (5) of a vehicle, and an input shaft (30), driven by a drive machine (e.g. diesel engine 6), there is arranged an at least single-stage epicyclic gear, arranged on the output side of the output shaft (40), which has two drive shafts (14, 16) on its input side. In the example shown, the output shaft (40) is connected to the planet-wheel carrier (3) of the epicyclic gear, while one drive shaft (16) is connected to the sun wheel (1) and the other drive shaft (14) is connected to the annular gear carrier (4) of the epicyclic gear. The drive shafts (14, 16) are driven by separate hydrostatic motors (12, 13) which are each supplied from a common pump (8, 9). The pumps are driven by the input shaft (30) via an intermediately connected distributor gear (7). In this arrangement, the one pump (8) is variable such that the associated motor (12) can optionally be driven in different directions and at different speeds, or can also be brought to rest. The overall transmission ratio between the input shaft (30) and the output shaft (40) is thus correspondingly infinitely variable over an extremely wide range.

Acceleration slip control device for car

Abstract: PURPOSE: To suppress recurrence of acceleration slip by furnishing a target opening setting means which is to set the target opening of a throttle valve on an acceleration slip control means on the basis of the difference between the drivewheel speed and reference speed. CONSTITUTION: The reference speed for a drive wheel M2 is calculated M3 on the basis of the car running speed sensed by a speed sensor of an idling wheel. The revolving speed of drive wheel M3 is sensed M4 from a drive wheel speed sensor. Therefrom the acceleration slip is sensed, and it is suppressed by driving a throttle valve M7 in the direction of closing. When the throttle valve M7 is driven again in the direction of opening, the target degree of opening is set M9 on the basis of the difference between the drive wheel speed and reference speed. This ensures that the degree of opening of the throttle valve M7 is suppressed in accordance with the magnitude of slip, which will serve suppression of recurrence of acceleration slip. COPYRIGHT: (C)1987,JPO&Japio

Vehicle with power unit

Abstract: A vehicle including a vehicle frame and a power unit suspended from the vehicle frame in a manner to reduce the amplitude of vibration generated by the power unit and also the vibration transmitted to the vehicle frame. The power unit comprises a case, an engine integrally coupled to the case, a drive wheel rotatably supported on the case, and a transmission mechanism disposed in the case for transmitted power from the engine to the drive wheel. The power unit is supported on the vehicle frame by a linkage mechanism and a cushioning unit, the engine having a center where vibratory forces are produced and an associated direction in which primary vibratory forces are produced. The linkage mechanism includes a link extending in a direction substantially normal to the engine-associated direction. The power unit is constructed such that a first straight line extending horizontally and transversely of the vehicle frame through the center of gravity of the power unit and a second straight line extending through the engine's center in the engine-associated direction substantially intersect each other.

Speed control apparatus

Abstract: Apparatus is disclosed for controlling the angular position of a drive wheel on a driverless vehicle. The apparatus includes a speed control device movable between two positions and having a lost-motion coupling to a shock absorber so that the device moves rapidly toward the second position for part of its movement and then moves slowly for the remainder of its movement.

Design of a Two-Speed Automatic Transaxle for an Electric Vehicle

Abstract: An advanced electric vehicle powertrain has been designed by the Ford Motor Company. This unique powertrain concept totally integrates a three phase ac induction motor with a two speed fully automatic transaxle, arranged concentrically about the drive wheel axis. The motor and transaxle assembly is designed to provide a low cost, lightweight, highly efficient, and practical powertrain system based upon the most advanced automotive practices. This program is funded as a major element of the Department of Energy's ''Electric and Hybrid Vehicle Program'' and includes the General Electric Company as a major subcontractor to Ford.

Suspended electric railway

Abstract: We will describe an electric overhead conveyor, wherein drive the electric vehicles with no special control of the electric motor or the transmission in the range of slope, downhill gradients or vertical lines or horizontal lines in the range of selected automatically at a reduced speed. For this purpose, chains or toothed racks are angeordent, .with which the sprockets or pinions of the electric vehicles comb, while the other sections of the rail, the electric vehicles are driven by a drive wheel in the routes for reduced travel speed. The web speed of the drive wheel is greater than the web speed of the chain wheel or pinion. In the slow speed portions, the web speed difference is thus taken that a Ausserer race connected with the pinion gear designed as a drive wheel relative to a fixed manner to the drive shaft, rotates the inner hub.

Semi-instantaneous calendar indication mechanism for a watch, especially a wristwatch

Abstract: In order to improve reliability in the event of interference between a manual date correction and its automatic advance, the date drive wheel (5) is mounted on a fixed pivot (1a) comprising a flat, and is centred on this axle by an open housing, with a flat back (5e) partially and elastically closed, via the end (5b) of a filamentary spring (5f) forming one piece with the wheel (5). During interference, the longer date-drive tooth (5d) is retracted by off-centring opposed by the effect of the filamentary spring (5f). Rapid date-correction (11) can thus occur at any time, even conjointly with automatic drive. There is no fear of jamming. A jumper-spring (8e), anchored at three places (3a, 3b, 3c), prevents recoil of the date annulus.

Steering and propelling a vehicle

Abstract: A self-propelled agricultural vehicle comprises steerable front wheels 2 mounted on stub axle assemblies 14, and rear drive wheels 3 and 4. A hydrostatic transmission comprises pumps 6,9 driven by an engine 5 and driving motors 7,10. Pumps 6,9 deliver fluid when a pedal 26 is depressed. When the front wheels 2 are steered away from their straight-ahead positions, a cable 27 moves a lever 22 so that control levers 18,19 of the pumps 6,9 are differentially adjusted. Thus, the drive wheel 3 or 4 at the inside of the turn is driven slower than the drive wheel 3 or 4 at the outside of the turn.