Showing papers on "Drive wheel published in 1981"

Electrically powered vehicle control

Abstract: An electric control is disclosed for an electrically powered vehicle having independently controlled left and right drive motors and associated drive wheels to propel and steer the vehicle. The electrical control includes left and right closed loop control circuits for respectively accelerating either or both of the drive wheels whenever a speed command or error signal associated with such drive wheel exceeds a first determined value. Dynamic braking is provided by connecting in parallel electrical relationship an associated brake resistor across one or both of the motors whenever the speed command signal associated with such motor does not exceed a second predetermined value.

Driving system for roll-up shades, blinds, rolling shutters and the like

Abstract: This driving system for roll-up shades, blinds, rolling shutters or the like is applicable to tubular winding tubes of the shade or the like and comprises an electric motor having its shaft coupled to the tube, and an emergency manual control mechanism in the form of a worm and wheel gearing adapted, in case of failure in the supply of electric current, to drive at the same speed the tubular casing of the electric motor and the winding tube, without causing any misadjustment of the automatic stop device; for this purpose, a particularly compact kinematic connection is provided and comprises a first toothed ring rigid with the winding tube and connected through adequate kinematic means including a pinion rotatably mounted inside a drive wheel to a second toothed ring disposed on the opposite face of this wheel and connected via a toothed wheel to cam members incorporated in the automatic stop means

Tractor data center

Abstract: A monitoring apparatus for a vehicle such as a tractor comprises a console including controls and a control circuit for calculating wheel slippage of at least one drive wheel of the vehicle and responsive to engine RPM of the vehicle and to the rotational speed of the drive wheel for calculating a predetermined relationship therebetween. The control circuit is also responsive to actuation of the controls for setting the calculated relationship equal to a predetermined reference value when there is substantially no load on the vehicle, and hence minimum slippage of the drive wheel, in each of a plurality of ranges of gear ratios of the vehicle, thereby calibrating the control circuit to calculate wheel slippage for each of these ranges of gear ratios. The console also mounts an observable indicator and the control circuit also calculates other variables such as vehicle speed and engine RPM and actuates the observable indicator when the calculated values deviate from preselected values.

Toy motorcycle and launcher

Abstract: Toy motorcycle play apparatus comprising a toy motorcycle having an energy-storing drive-train mechanism, and a launcher for imparting energy to the mechanism and then releasing the motorcycle for forward movement. The motorcycle comprises aligned rotatable front and rear ground-engaging wheels and an intermediate flywheel, all rotatable about horizontal transverse axes. The energy-storing drive-train mechanism is formed by the flywheel, one of the wheels, and a gear train between them which reduces speed and increases power and duration of rotation at that drive wheel. In operation, the motorcycle is powered by the flywheel, which also serves to maintain it upright by gyroscopic action as it moves forwardly. The launcher holds the motorcycle in the desired upright orientation with the drive wheel elevated so that it can rotate freely while energy is being stored in the flywheel. Then the motorcycle is released, the drive wheel is allowed to engage the launcher platform and propel the motorcycle forwardly. In a motorized version, a movable arm on the launcher carries a motor-drive power-transmitting drum. Initially, the arm is moved so that the drum directly engages the periphery of the flywheel on the motorcycle to transfer energy to the flywheel. When the arm is moved away, the power-transmitting drum disengages and the motorcycle is released. In a hand-powered version, a device such as a toothed rack may be pulled by the user to impart energy to the flywheel, and also to then automatically lower and release the motorcycle.

Drive wheel and sprocket assembly

Abstract: A drive wheel and sprocket assembly for use in the power transmission of a conveyor device such as a roller conveyor comprises a drive wheel which is mounted on the hub of a sprocket assembly. The drive wheel mounts the hub with a modified spline connection in which a plurality of radially overhanging teeth on the drive wheel are resiliently interlocked with shoulders formed in the assembly hub. In a preferred embodiment, the drive wheel is molded of polyurethane.

Wheeled turbine-powered toy vehicle and launcher apparatus

Abstract: A wheeled turbine-powered toy vehicle and launcher apparatus. The toy vehicle has at least three spaced-apart ground engaging wheels on which it is supported and a drive mechanism operatively coupled to at least one of the wheels for transmitting rotation to the wheel. The drive mechanism includes a rotatably energy storing flywheel and an air turbine operatively coupled to the flywheel. The apparatus further includes an air delivery tube having a mouthpiece open to the atmosphere for the user to place into his or her mouth and blow air into. The tube has an outlet which is disposed adjacent to the air turbine for directing air against the turbine blades to cause the turbine to rotate. The toy vehicle is designed for use alone or with a launcher. In a preferred form, the launcher supports the toy vehicle above any surface to permit the user to blow into the mouthpiece and impart high speed rotation to the turbine and thus the flywheel, while the ground-engaging drive wheel or wheels of the toy vehicle are free to rotate. For convenience the launcher and toy vehicle mounted on it may be hand-holdable; after the energy has been imparted, the launcher and vehicle may be placed on the ground and the vehicle released and propelled forwardly. In one form the launcher includes a biased propelling member for initially overcoming the vehicle's inertia. In another form the toy vehicle may be manually released from the top of an incline ramp.

Engine support structure for motorcycles

Abstract: A motorcycle of chain drive type comprising a frame and an engine supported from the frame at a plurality of locations. The engine drives a drive wheel of the motorcycle through a chain. At least at one of the plurality of support locations is a link coupling coupled to the frame and engine for pivotal movement in a vertical plane while being rigid in the widthwise direction of the frame.

Human powered vehicle

Abstract: A human powered vehicle of the pedal-driven type having three or more wheels, a frame and seat for supporting one or more riders in a generally supine position, and a streamlined shell enclosure with a transparent canopy which is openable for entry and egress of the rider. The preferred embodiment for a single rider has two steerable wheels located forward of the rider at approximately the widest part of the streamlined shell, and a single fixed drive wheel centrally positioned behind the rider. The drive wheel is equipped with a multi-sprocket gearing arrangement, and a large pedal-equipped sprocket wheel is mounted in a position slightly forward and above the common axis of the front wheels for ready engagement by the rider's feet. A single drive chain extends from the drive sprocket to the sprocket cluster and passes around idler rollers which direct the chain beneath the rider.

Spring assist drive for cycle

Abstract: A spring assist drive for pedal operated vehicles such as bicycles and tricycles makes use of a wind-up spring in the train of power from the pedal operated power sprocket to the drive sprocket for the rear drive wheel. The wind-up spring is a coil spring, the inside end of which is anchored to an axle for a relatively smaller sprocket in chain driving engagement with the sprocket on the rear drive wheel. The outside end of the spring is anchored to a relatively larger sprocket and chain driven from the pedal operated power sprocket.

Installation for the automatic removal and reception of loads through the intermediary of transport vehicles

Abstract: The transport installation comprises a reception station and a transport vehicle between which a load can be displaced in a horizontal plane by movement of the vehicle. To avoid the necessity of raising the transport vehicle or of having recourse to an auxiliary vehicle, an endless conveyor, extending in the direction of displacement of the transport vehicle is provided at the reception station. The endless conveyor comprises a horizontal portion for receiving the load and this portion is preceded by a downwardly inclined portion intersecting the horizontal plane along which the load can be transported. At least one drive wheel, co-operating with a corresponding drive element carried by the transport vehicle, is provided at the reception station for driving the endless conveyor at the same time as the transport vehicle.

Wheel head for driving wheels of vehicles

Abstract: A wheel head for the drive wheel of a heavy duty vehicle provides the hub as a housing which is closed at its outer end by a movable cover and can be opened to allow removal of the planetary gearing and brake. The planetary gearing includes planetary gears journaled directly on the cover and a ring gear in the form of a hollow shaft which encloses the brake and is connected to the axle by a wheel bearing cap which also can be removed through the housing opening when the cover is detached.

Tread belt link and cooperating drive tumbler

Abstract: A drive system comprising an endless tread belt made up of identical tread belt links and a cooperating drive tumbler is disclosed. The link is formed with a ground engaging bottom face, a drive wheel engaging top face, and connecting ears along its forward and aft sides which are suitable to interdigit with the ears of other links so as to form a belt. The link also has a guiding cog rising upwardly from the central region of the top face, a bearing surface on each lateral side of the guiding cog, aligned drive surfaces on the forward and aft sides of the guiding cog located between the link bottom face and link top face, and a slot in alignment with the drive surfaces. The cooperating drive tumbler is formed with a drive wheel having a plurality of circumferentially spaced teeth projecting radially outward from the wheel; two rows of segmented bearing rims alternately offset laterally from each other on the sides of the teeth, the segments of each row being circumferentially spaced and being formed such that the teeth extend radially beyond the segments; and a plurality of pockets located between the teeth that open radially outward, and open laterally from the tumbler wheel between the rim segments.

Tape drive door operator

Abstract: A garage door operator is provided which includes a flexible, elongated tape within a relatively rigid, elongated guide rail mounted in a garage. The tape has first and second runs longitudinally disposed in first and second guide channels in the guide rail. A motor is connected to drive a drive wheel with the tape wrapped around a part of the drive wheel and having a positive drive engagement therewith. A carriage is longitudinally guided on the guide rail and is connected both to the tape for movement therewith and by a link to a garage door for opening and closing movements of the door. The guide rail may be cut into sections for a shorter shipping package, and the tape coiled in a loop during shipment but then disposed within the guide channels during operation, the guide rail being spliced into one long, continuous assembly for use in the garage. The foregoing abstract is merely a resume of one general application, is not a complete discussion of all principles of operation or applications, and is not to be construed as a limitation on the scope of the claimed subject matter.

Angular-linear sheet transports

Abstract: Methods and apparatus for transporting a sheet first toward and then along a registration edge provide a support for the sheet having a sheet support surface adjacent the registration edge and a first drive wheel rotatable about a first axis for driving the sheet on the support surface. A second drive wheel rotatable about a second axis extending at right angles to the support surface is provided at the first drive wheel. Such first wheel is initially positioned at an angle to the registration edge and is rotated with the second wheel through a third wheel about the first axis, with the sheet being brought into peripheral engagement with the first drive wheel to transport the sheet on its support surface to the registration edge. The third wheel with the first wheel is then swiveled about the second axis and about the second wheel, toward parallel relationship with the registration edge. The swiveled first wheel is then further rotated with the second wheel through the third wheel about the first axis to transport the sheet along the registration edge. In practice, the third wheel with the first wheel may be laterally moved relative to the second wheel equidistantly about the second axis to swing the first wheel toward parallel relationship with the registration edge.

Slide door opening/closing device

Abstract: PURPOSE:To make a single motor serve both for swing-out and opening/shutting of a slide door by transmitting the power through a differential gearing to a rack and pinion for swinging-out of the door and to a drive wheel for the slide door. CONSTITUTION:Slide door is equipped with a guide 50, and a roller 42 and a drive wheel 38 installed on the body 18 of the machine casing are put in engagement with the edge 51 of said guide 50. This casing body 18 slides on the guide edge 13 of the base plate 12 fixed to the car body and is driven by a pinion meshing with a rack 17. This pinion and the drive wheel 38 are driven by a motor 31 through a differential gearing. Accordingly, the door is swung out together with the casing body 18 through the action of rack and pinion when opening and shutting can not be done by the drive wheel 38 because of the door being shut. This use of differntial gearing will make it possible for a single motor to serve both for swing-out and opening/shutting of the door.

Safety override for automatic fitting seat belt - has lever mounted drive wheel for belt tightener swung aside for override

Abstract: The safety override is for an automatic fitting seat belt. It has the drive wheel for the flexible mounting for the belt clasp pressed against pressure rollers to increase the friction coupling. The pressure rollers are mounted on levers held against the drive wheel by a spring. A manually operated cam rotates to move the levers apart and lift the rollers from the drive wheel. The override enables the wearer to loosen or fit the belt when the servo drive has stopped functioning. The override can also be operated by an electromagnetic servo. The belt tightener operates when the car door is opened or closed and provides an automatic seat belt fitting.

Motor drive design

Abstract: A photograph materials processing unit having: a motor drive unit comprising, a base member which has an upper surface, and a drive wheel extending from the upper surface which is in operative relationship to a drive motor, the drive motor also being part of the base. The upper surface of the base member also carries a pair of spaced-apart undriven wheels which are rotatable in planes parallel to the plane of rotation of said drive wheel. The motor drive unit is adapted to carry a cylindrical drum for receiving photographic materials including film and liquid processing chemicals. The drum is carried in 3-point contact on the upper surfaces of the wheels whereby when the drive motor is turned on, the drum rotates on the wheels without substantial longitudinal movement of the drum with respect to the motor drive unit so long as the longitudinal center line of the drum is parallel to the axes of rotation of the wheels.

Ventilation blower for a noise-suppressing encapsulated internal combustion engine

Abstract: An internal combustion engine with a noise-suppressing encapsulation has a drive wheel for auxiliary units which is driven by the crankshaft of the engine and arranged outside the encapsulation. The drive wheel consists of two concentric parts which are connected via at least one elastic member. The inner part of the drive wheel has cooling air ducts which extend from inlet ends on the side opposite an opening in the encapsulation wall to a exit ends on the side adjacent the opening, the exit ends being spaced a greater distance from the axis of rotation than the inlet ends, although still lying within the noted opening. Thus a blower is provided in the form of a centrifugal pump. A cover is connected to the outer part of the drive wheel which covers the inner part and has sound-isolated suction openings for the cooling air.

Sharpener construction for fabric cutting machine

Abstract: A sharpener drive for the straight blade of a fabric cutting machine receives its motion from the crank wheel which drives the blade A drive wheel, which selectively engages the crank wheel, drives a gear train which drives a gear mounted in splined relationship with an elongated shaft A sharpener is mounted on the elongated shaft for selective engagement with the straight knife An actuator is attached to the elongated shaft for sliding the elongated shaft through the gear with which it is splined to thereby move the sharpener axially of the knife while the gear rotates the elongated shaft to drive sharpener wheels A link is engageable by the elongated shaft in its stored position for effecting disengagement of the drive wheel from the crank wheel A latch includes a camming portion for moving the latch into locking engagement with the cutting machine housing when the elongated shaft is moved to its stored position The sharpener consists of first and second sharpener wheels at a lower and higher elevations, the placement of the sharpener wheel at the lower elevation being for compensating for the upward movement thereof inherent in its linkage before it can engage the sharpener blade on the upstroke of the sharpener

Drive wheel for driverless vehicle

Abstract: A drive wheel for driverless vehicle has a tire portion. The tire portion has discrete recesses for enabling the tire portion to be frictionally driven by a drive shaft whose surface is wet or oily.

Electromechanical level measuring instrument

Abstract: An electromechanical level measuring device (10) comprises a cable drum (16) which is driven by an electric motor (52) and onto which a measuring cable (18) is wound. Attached to the unwound length of the measuring cable (18) is a sensing weight (22). The unwound end of the measuring cable (18) when the sensing weight encounters the surface of the charge is a measure of the filling level. The electric motor (52) drives, via a gear system (48), a shaft (44) which carries a drive wheel (40). The drive wheel can be rotated through a limited angular range between two end positions (64, 66) with respect to a carrier wheel (32). With the sensing weight (22) freely suspended on the measuring cable (18), the carrier wheel is in one end position with respect to the drive wheel. When the sensing weight (22) encounters the charge surface, the carrier wheel is moved in the direction of the other end position by a tension force. The relative rotation of drive and carrier wheel, which are disposed outside the region which can be affected by the charge, is measured by sensors (70, 72) which function without contact and is processed in an evaluation device for switching the direction of rotation of the electric motor (52).

Ink ribbon cartridge pack

Abstract: A protective pack for holding a cartridge for a daisy wheel type printer is disclosed. The cartridge has a supply spool for holding a fresh ribbon pancake and a take-up spool for holding used ribbon. The cartridge body has a viewport extending radially adjacent the ribbon pancake to allow observation thereof. The cartridge includes two arms which define a path for the ribbon to pass between the paper and the printer mechanism. Two drive gears are serially engaged with each other and with the ribbon drive means. When the first drive wheel is driven by a drive shaft of the printer, the second acts as an idler gear so that the direction of ribbon take-up is the same as the direction of the rotation of the drive shaft. When the second gear is driven, it drives the ribbon drive gear means directly so that the rotational direction of the ribbon take-up is opposite that of the drive shaft. The drive gears are located and their lower portions are configured to engage the respective drive shafts of various printers. The ribbon pack is an open shell having a cavity shaped to conform to the cartridge body. A shoulder projecting upward in the cavity inserts into the viewport when the cartridge is placed therein to prevent the ribbon pancake from telescoping during shipment.

Emergency crank handle for motor-driven roller doors and the like

Abstract: of EP00142401. Emergency crank handle for motor drives of roller doors, roller blinds, folding ceiling doors or the like, with a resiliently mounted crank handle (14, 114) carrying a toothed wheel (9, 19) which, when the crank handle (14, 114) is moved against the action of a spring (6, 16), can be brought into meshing contact with a drive wheel (4, 24) acting upon the working shaft (26) characterized in that the toothed wheel mounted on the crank handle (14, 114) is a cylindrical gear with envelope lines entending parallel to the axis of the crank handle, and the drive wheel connected indirectly to the working shaft (26) ist designed as a crown wheel (4, 24) the tooth envelope lines of which lie in a plane perpendicular to the axis of the crown wheel.

Tractor drive mechanism

Abstract: A drive mechanism for a tractor, to allow the tractor to be advanced at very slow speeds typically in the range of from 10 to 400 m/h. The mechanism may be mounted on a tractor or on an attachment for a tractor, such as a trenching machine, and rotatably supports a drive shaft which carries a pair of slatted drive wheels such that the wheels are adjacent the rear tires of the tractor. The mounting for the drive shaft is arranged to allow the drive wheels to be moved into and out of engagement with the tractor tires, and a power-drive mechanism is provided for the drive wheels to effect rotation thereof. The power drive mechanism may be adapted for connection to the tractor power-take-off, or could include a separate hydraulic motor. In operation, the drive wheels are urged into engagement with the tractor tires and on rotation of the drive wheels by the power-drive mechanism, the tractor wheels are turned, by virtue of the frictional engagement between the drive wheels and tractor tires and/or the intermeshing engagement between the drive wheel slats and the tire lugs.

Engine-driven vibrating ground compactor - has drive wheel on shaft coupled to separately driven counter-rotating shaft, depending on direction of rotation

Abstract: Shafts running opposite ways bear imbalance units capable of assuming mutually different phase settings. Each shaft (9,11) is separately drivable and at least one (11) bears a drive wheel (12), freely rotatable within a prescribed angle range in relation to it, but coupled to it at the limits of this range. The wheel remains in active or passive drive connection with the other shaft (9), according to which shaft is being driven forward or in reverse, as the machine moves along. The angle range may be determined by a stop (13) between wheel and first shaft. This provides for direction reverse without a clutch.

Trolley-bus with energy feedback via hydrostatic system - supplies braking pressure energy to hydraulic store with converter and pump with motor

Abstract: The trolley-bus incorporates a system for hydrostatic recovery of braking energy. It is able to travel a long distance without drawing power from the overhead lines. The braking energy is in the form of pressure energy which is transmitted to the hydraulic store supplied by a hydrostatic converter. The energy can be transmitted to the driving axle, or drive wheel, or the vehicle. The drive axle or drive wheel is only driven by the hydrostatic converter. The hydraulic store is charged by the hydraulic pump. This is achieved either via the gears or used to supply an electric motor.

Motor vehicle spur wheel differential - has hollow drive wheel contg. even number of meshing spur gears alternately driving planetary gear train

Abstract: The differential is formed by a number of spur gears, and comprises a hollow input gear wheel (1,8,8a) containing a spur gear assembly consisting of an even number of intermeshing spur gears (3) circumferentially equi-spaced around a circle. The spur gear shafts (4b) project alternately to the sides of further spur gear wheel, where they carry the input gears (4,4a) meshing with an output gear wheel (5,5a), coaxial with the input gear wheel. The shafts are carried in bearings in the input gear wheel and in a housing (6) secured to this gear wheel. The intermeshing gears may form a gear pump with closable connection between inlet and outlet ducts.

Driving device for stationary conveyor

Abstract: PURPOSE:To enable sharp reduction in the number of actuators, by a method wherein, in a conveyor for delivery of loads between a conveying dolly and a storage station, expansion and contraction of a cylinder drives and stops a stationary conveyor. CONSTITUTION:The drive of a motor 8 moves a conveyance chain 24 of a conveyor 4. Additionally, the rotation force of the conveyance chain 24 is transferred to a friction drive wheel 34 through a swing arm rocking shaft 25 and the like. With the friction drive wheel 34, positioned at the lower end of the arm 28, brought into press contact with a friction driven wheel 44 of a follower 12, the rotation of the drive wheel 34 is transferred to a conveyance chain 41 of a stationary conveyor 7 through the follower 12 including the friction driven wheel 44. Through the rotation of the driven wheel 34 resulting from the expansion of a cylinder 31, the drive wheel 34 is disengaged from the driven wheel 44, and this causes the stoppage of the stationary conveyor 7.

Time switch providing daily and weakly cycle - uses alternate switching discs driven by different cogs of common drive wheel

Abstract: The switch uses a weekday disc or an interchangeable 24 hour disc (5). Both discs have cursors moved along their periphery to allow operation of switch contacts at required times and each is driven via a rotary drive wheel (2). This has two drive cogs (2a,2b) with a 7:1 transfer ratio, respectively cooperating with drive teeth (5a) around the underneath of the 24 hour disc (5) or the weekday disc. A single reversible disc (5) may be used, marked on one side with a 24 hour cycle and on the other side with a weekly cycle, the respective drive teeth (5a) cooperating with the drive cogs (2a,2b) being provided on the opposite side. The disc (5) is secured to the rotary axis (4) via a clip (8), fitting into an annular groove (9) of the disc (5).

Reciprocative movement changeover device for filter press

Abstract: PURPOSE:To make the titlted device easy to assemble and adjust and durable by providing a guide wheel turning in contact with the endless belt between a driven wheel and a drive wheel interlocking to frame opening mechanisms and a slider provided with a switch changeover body to frame members by energizing springs. CONSTITUTION:A motor revolves a driven wheel 13 and wheels 27, 27' for wrapping transmission via an endless belt 14 and frame opening mechanisms 9, 9' are transferred from the position A to B via wrapping trasmission belts 29, 29'. In the position B, the mechanisms 9, 9' hold filter plates 6 therebetween and move them to right. While discharging the cake, the plates 6 travel until they about on the filter frame 5 and movable head 8 having arrived first, then the revolution of the wheels 27, 27' is stopped. However, the drive wheel 12 keeps revolving clockwise and therefore it contacts the endless belt 14. This causes the rotating guide wheel 12 to be moved leftward and also causes a slider 20 to slide in a frame member 16 so that a switch changeover body 19 is moved left to turn off a switch 23. Then, the drive wheel 12 revolves counterclockwise. By the above-mentioned changeover operation, the mechanisms 9, 9' are reciprocatively moved, by which the plates 6 are successively fed in the right direction and the frames are opened.