Abstract: A reciprocating mechanism includes a first connecting element, a crankshaft and a second connecting element. The crankshaft includes a rotation shaft, a first following element and a second following element. The first following element is pivotally disposed on one side of the rotation shaft and movably coupled to the first connecting element. The second following element is pivotally disposed on the other side of the rotation shaft, and a first angle is formed between the first following element and the second following element. The second connecting element is movably coupled to the second following element. The first following element and the second following element are configured to rotate around the rotation shaft so as to be movably coupled to and cause each of the first connecting element and the second connecting element to reciprocate and cyclically pivot along an arc-shaped trajectory.

Abstract: Vehicle includes a frame, a seat arranged on the frame, a wheel rotatably mounted on the frame, an elongate directional slider, a pedal on the directional slider that slides between first and second positions, a main drive chain connected to the first wheel, a main drive sprocket that rotates the main drive chain and thus the first wheel, a flywheel that rotates the main drive sprocket, and an energy generating system that converts sliding of the pedal on the directional slider into rotational force to rotate the flywheel. The energy generating system may include a first electrical coil assembly connected to the pedal, a second electrical coil assembly in connection with the directional slider and that cooperates with the first electrical coil assembly to cause generation of electricity, and an electrical motor that is powered by the generated electricity and is coupled to the flywheel to rotate the flywheel.

Abstract: There are several methods to propel moving force points on a pumping unit. One of the embodiments is propulsion utilizing permanent magnets. This invention can aid the several methods and provides the push start that allows initiating permanent magnet propulsion. This invention relates to an end return device for assisting positioning drives to actuate the continuous movement by mechanical means of moving force points to a desired advantageous position at a desired advantageous moment to achieve reduced net torque when lifting or lowering an unbalanced load with a beam with a fulcrum and connected to a load and an effort. In one embodiment, a walking beam well pumping unit, the lifting and lowering of the well load can be caused by the reciprocating motion of a beam tipping on a fulcrum and with moving effort force point, moving crank shaft force point, and moving beam weight force point.

Abstract: The sprayer activation device contains a base member, a cover member, and a transmission assembly. The base member provides an accommodation space, an axle, a positioning piece, a through hole, and a number of positioning pins. The transmission assembly contains a motor and a number of engaging transmission gears in the accommodation space. The motor axle is threaded though the through hole of the base member and has an axle gear engaging a transmission gear. A pin is configured on another transmission gear. The cover member seals the accommodation space, and has a positioning pieces and a through slot. A crank is provided with a positioning opening and an axle hole at its two ends, and a hammer is configured at a side of the crank. The hammer is moved up and down as the transmission assembly drives the crank.

Abstract: An improvement to the Waissi type opposed piston internal combustion engine is proposed. The engine has at least one pair of aligned and opposed cylinders with one reciprocating double-headed piston assembly in each cylinder pair. The reciprocating motion of the piston is transmitted to the driveshaft by a rotating crankdisk, which is off-centered mounted to the driveshaft. The high friction metal to metal contact between the crankdisk and the piston contact wall is replaced by a combination of a roll resistance and friction under hydrodynamic conditions resulting to a significantly reduced total resistance between the piston and the crankdisk. This is accomplished by utilizing a bearing ring assembly slidably installed on the annular perimeter surface of the crankdisk. The bearing ring is held in place by a linear U-profile groove, which is casted or machined on each the piston contact slot wall of the integrated piston assembly respectively.

Abstract: The present invention is an improved drive system for a personal vehicle comprising: a frame with a steerable front wheel and rear wheel connected to a drive axle connected to a crank arm by a drive linkage; a roller rotatably attached to the crank arm; a pedal pivotally attached to the frame having a cavity for receiving the roller; a contoured wear bar carried by the cavity for contacting the perimeter of the roller; a major arch included in the contoured wear bar contacting the roller when the pedal is on a down stroke; a minor arch included in the contoured wear bar for providing additional power when the pedal is near the end of its down stroke; and, a major front slope included in the wear bar for contacting the roller when the pedal is in its upstroke to place the pedal at its highest most position.

Abstract: An anti-backlash assembly of the type for transferring motion via a pin movable along a slot. The assembly comprises a pivot lever and a second lever member. The pivot lever comprises a body portion and a pivot lever portion extending from the body portion to a pivot lever distal end. The pivot lever portion defines a pin engagement slot extending from adjacent the pivot lever distal end toward the body portion. A pair of fingers extend in parallel and spaced relationship from the pivot lever distal end of the pivot lever portion toward the body portion to engage opposite sides of a pin of the engagement arm. Each of the fingers includes a pin engaging section extending to an inwardly extending distal end and a spring section extending in a for urging the fingers into clamping engagement with the pin.

Abstract: The sprayer activation device contains a base member, a cover member, and a transmission assembly. The base member provides an accommodation space, an axle, a positioning piece, a through hole, and a number of positioning pins. The transmission assembly contains a motor and a number of engaging transmission gears in the accommodation space. The motor axle is threaded though the through hole of the base member and has an axle gear engaging a transmission gear. A pin is configured on another transmission gear. The cover member seals the accommodation space, and has a positioning pieces and a through slot. A crank is provided with a positioning opening and an axle hole at its two ends, and a hammer is configured at a side of the crank. The hammer is moved up and down as the transmission assembly drives the crank.

Abstract: A needle-coupled parallel mechanism is provided. The needle-coupled parallel mechanism is structurally improved so as to have a broad working area and a high precision. The needle-coupled parallel mechanism comprises a fixedly positioned frame, a main shaft, three first links, three second links, and a needle. The main shaft is arranged so as to be movable relative to the frame. One end of each of the first links is connected to the frame between both ends of the main shaft and the other end thereof is connected to one end of the main shaft. One end of each of the second links is connected to the frame between both ends of the main shaft and the other end thereof is connected to the other end of the main shaft. The needle is linearly movably coupled to the main shaft to perform a predetermined operation on a target object. Each of the first links and the second links has at least three joints selected from a prismatic joint, a 1-axis revolute joint, a 2-axis revolute joint and a spherical joint.

Abstract: An improvement to the Waissi type opposed piston internal combustion (IC) engine is proposed. The engine has at least one pair of aligned and opposed cylinders with one reciprocating double-headed piston assembly in each cylinder pair. The reciprocating motion of the piston is transmitted to the driveshaft by a rotating crankdisk, which is off-centered mounted to the driveshaft. The high friction metal to metal contact between the crankdisk and the piston contact wall is replaced by a combination of a roll resistance and friction under hydrodynamic conditions resulting to a significantly reduced total resistance between the piston and the crankdisk. This is accomplished by utilizing a bearing ring assembly slidably installed on the annular perimeter surface of the crankdisk. When the crankdisk rotates the bearing ring is held in its designed place in a slot bounded laterally only by the connecting members of the integrated double-headed piston assembly.

Abstract: An anti-backlash assembly of the type for transferring motion via a pin movable along a slot. The assembly comprises a pivot lever and a second lever member. The pivot lever comprises a body portion and a pivot lever portion extending from the body portion to a pivot lever distal end. The pivot lever portion defines a pin engagement slot extending from adjacent the pivot lever distal end toward the body portion. A pair of fingers extend in parallel and spaced relationship from the pivot lever distal end of the pivot lever portion toward the body portion to engage opposite sides of a pin of the engagement arm. Each of the fingers includes a pin engaging section extending to an inwardly extending distal end and a spring section extending in a for urging the fingers into clamping engagement with the pin.

Abstract: An apparatus for evaluating a change of an existing system to a modified system by using a test system including a subsystem having the same configuration with either of the existing subsystem and the modified system includes: a memory for storing configuration information of the test system and test information; and a processor for executing a process including: activating the test system to execute test on the subsystem, collecting test information from the test system, and storing the test result information while the subsystem has the same configuration as the existing system; confirming the test system has been modified; and activating the test system to execute test on the subsystem, collecting test result information from the test system, and storing the test result information while the subsystem has the same configuration as the modified system.

Abstract: A workstation of a packaging machine comprises a lifting device (100) which is configured such that it is able to convert a rotary motion of a motor (8) into a translator motion of the workstation by a lever device (6). The stroke of the lifting device (100) is performable for this purpose by a pivotable lever (61) and a roller (32) which cooperates with an upper roller limit (33).

Abstract: A mechanism transforms a longitudinal reciprocation movement of a piston in a cylinder into a combined unidirectional rotation and reciprocating movement of the piston. In order to achieve this transformation the piston includes a closed wave shaped groove on its circumference. The closed wave shaped groove has recesses at its apexes. The recesses break the symmetry of the groove. Balls that are located in the cylinder protrude into the groove. When the piston is reciprocating, the groove slides on the balls. A flexible heat shrink ring secures the balls in place and assures that the balls are constantly biased toward the face of the groove.

Abstract: An actuator system for use with a sheet transport system having a first roller and a second roller. The actuator system includes an idler assembly and a drive assembly. The idler assembly is coupled to the first roller and is biased to hold the first roller in a closed position engaging the second roller for transporting a sheet. The drive assembly is configured to engage the idler assembly to move the first roller between an open position spaced from the second roller and the closed position and to disengage the idler assembly when the first roller is in the closed position so that the first roller is held in the closed position solely by the idler assembly.

Abstract: The invention can be used for transport means, sports cars and power plants. The inventive engine comprises a hollow toroidal working cylinder provided with a continuous circular slot embodied along the small diameter thereof, a nozzle or a spark plug and arc-wise extended input and output orifices embodied in the wall thereof for admitting air or air-fuel mixture and exhausting combustion gases. The transmission gear is provided with four eccentrics whose crankshaft necks are fixed to the axial holes of the pinions and arranged in the four bores of a fly wheel, whose axes are circumferentially disposed at an even pitch. The crankshaft necks are connected to the bearing elements through connecting rods each of which is arranged by the ends thereof in such a way that they are rotatable about the crankshaft neck and an axis disposed in the wall of one of the bearing elements.

Abstract: In a link mechanism, a first link is disposed to be movable by a driving force from a driving source, and a second link is operatively linked with the first link to move a driven unit. One of the first and second links includes a cam groove having a bent portion which is bent by a radius of curvature smaller than a predetermined value, and the other one of the first and second links includes a pin slidable within the cam groove. In the link mechanism, a sliding speed of the pin sliding in the cam groove is reduced when the pin enters into the bent portion in the cam groove, as compared with the sliding speed before the pin enters into the bent portion.

Abstract: A toy consists of a base, a cap and a toy model. The base has stationary wheels and a movable wheel located on the bottom section thereof. The movable wheel may be driven through a gear set by battery power for moving the base around. The cap has a hollow casing located on the top section to house a motor that is driven by a battery for rotating the cap through another gear set. The base has an arched gear rack located on the top surface. By way of an elastic element and a lever to couple with the gear sets and arched gear rack, the cap may be moved to the left and right, and rotated positively and reversely to generate a wide variety of simulative motions.

Abstract: A driving seat of a crystal ball, comprising a disk shape seat, a plurality of gears, a swing block, a restoring block, a rotary disk, and other components, wherein the long hole of the extending arm of the swing block is located on the shaft of a driven gear, the driven gear is engaged with an active gear, and the gear on the lower end of a rotary disk is engaged with a small gear on the upper end of the active gear. By this structure, when the active gear is rotated, the swing block is driven to rotate to swing forward and backward, and at the same time, the rotary disk is driven to rotate.

Abstract: An improved motion generating mechanism for use in a music box to drive decoration articles associated therewith is disclosed. A crank arm eccentrically attached to the outer side of the driving wheel associated with the playing roller of a music box is circularly moved in synchronism with the driving wheel. At each end of the crank arm is disposed an engagement protrusion respectively. A securing seat is fixed to the mounting plate of the music box and to the base plate of the outer case with a supporting base pivotally associated therewith respectively; each supporting base is provided with a swing arm having an elongated guide groove disposed thereon; in each groove is slidably located the engagement protrusion so that the supporting bases are able to be pivotally moved in synchronism with the crank arm. To each supporting base is secured a mounting pole onto which a decoration article is mounted. Each mounting pole is led through an elongated slot disposed on the top of an upper lid.

Abstract: A swing chair includes a frame structure having a rectangular base constituted by four bar members defining two rear corners and two front corners and two standing bar members respectively extending upward from two rear corners and inclining toward the front corners with a space between the two standing bar members. Each of the standing bar members has an axle extending therefrom toward each other in a co-linear manner, the axle having a pendent arms rotatably mounted thereto and extending downward therefrom to define a lower end. A chair is positioned in the space between the two standing bar members and attached to the lower ends of the pendent arms so as to be rotatable or swingable about the axles. One of the standing bar members has a swing drive mechanism fixed to the top end thereof. The drive mechanism includes a motor coupled to the axle of the standing bar member by a worm and worm gear pair. The worm gear has an eccentric pin.

Abstract: A motion converter comprising a drive head mounted eccentrically onto a drive shaft, and which is eccentrically displaced when the drive shaft rotates. The converter additionally comprises a displaceable transmission element and a displaceable tool holder holding a tool. The transmission element and tool holder are moved to-and-fro when the drive shaft is rotated. The excursion of the to-and-fro motion is adjustable by pivot means, preferably a first pivot pin, displaceably affixed to a housing and connecting the transmission element to the housing.

Abstract: A dual pendulum display apparatus comprising a housing, a motor which is fixed to the housing and which has an output shaft, an output gear which is driven by the output shaft, which is mounted on the housing for rotation relative thereto about an output gear axis, and which has thereon a projection spaced from the output gear axis, a pivot arm mounted on the housing for pivotal movement relative thereto about a pivot arm axis spaced from the output gear axis, the pivot arm having therein a longitudinal slot receiving the projection for reciprocal sliding movement of the projection in the slot, such that rotation of the output gear and movement of the projection in the slot causes pendulum type motion of the pivot arm, the pivot arm having opposite first and second ends spaced from the pivot arm axis, first advertising material mounted on the first end of the pivotal arm, and second advertising material mounted on the second end of the pivot arm, such that the first advertising material and the second adverti

Abstract: A wave-producing decoration including an elongated liquid container which has an outwardly and downwardly projecting bubble collector integrally formed at a bottom center. The bubble collector communicates with the liquid container and collects any possible bubbles in the container. In addition, the bubble collector has a shape suitable for engaging a seat member partially exposed from a support member of the decoration, such that the liquid container may laterally sway with the pivoting seat member, causing liquid in the container to flow in waves.

Abstract: An open top swing assembly uses a unique swing drive mechanism and a control to provide three selective swing height settings. The assembly has a frame which provides an open top structure for ease of access and a trapezoidal shaped front base to provide foot clearance. The swing drive mechanism includes a drive sleeve rotatably mounted to an axle that operatively supports the hanger. A drive flange is mounted on the axle, with a drive flange coupling device positioned between the sleeve and the drive flange to provide a limited lost motion connection. The coupling device includes a hub member coaxially and rotatably mounted on the axle and at least one torsional spring mounted coaxially on the hub member. The hub member includes abutments for engaging with the drive flange, whereby torque applied to the sleeve is transferred to the axle. A crank driven by a motor is linked to the sleeve to oscillate the sleeve. The swing height control device can have a sensor for detecting the swing height or amplitude.

Abstract: A transmission mechanism includes a transmission gear shaft having a speed reducing gear on one end driven by a DC motor via a driving gear and a transmission gear on an opposite end meshed with a driven gear on an eccentric gear shaft, which has an eccentric axle coupled to a reciprocating block via a crank and driven to reciprocate the reciprocating block causing it to alternatively move the needle arm of a mini-sewing machine up and down in performing the process of stitching.

Abstract: An adjustment mechanism uniquely tailored to a space crank wiper system is used to adjust the wipe angle, specifically to lower the inwipe to give a depressed park position. The characteristic spacing of a four bar spatial mechanism that drives the wiper post is shortened by a jack screw mechanism that shifts an input crank closer to the wiper post. This lowers the inwipe position. A worm wheel selectively holds or turns the jackscrew, which axially moves a splined stub shaft in the end of a drive shaft to move the crank back and forth.

Abstract: A brush holder mounted on a container of cleaning fluid includes clips engaging the handles of one or more brushes to support the brushes with the bristles thereof extending vertically into the cleaning fluid. Two vertically-spaced motor-driven cranks, rotatable in synchronism with each other about vertically spaced horizontal axes, have a horizontally extending crank pin, the lower crank pin being received in a hole in the brush holder, and the upper crank pin being received in a slot in the brush holder.

Abstract: A toy vehicle for a child includes a track and roller drive train for propelling the vehicle. Each of a pair of pedal arms is pivotally mounted at its forward end and has a split track mounted at the rear end thereof which rides on a roller mounted on either side of the axle. As the pedal arms are reciprocated by a rider, the tracks drive the rollers and axle with the gap between ramps of the track allowing the track to straddle the axle at the bottom of each stroke. The track may be generally curvilinear, or compound angled to balance the torque generated by each stroke in either the forward or rearward direction, and to also provide a smoother driving action through substantially 180.degree. of axle rotation with each stroke.

Abstract: This invention relates to an innovative design of a crystal ball having a swinging doll with color changeable eyes. The crystal ball includes a glass ball mounted on a base and a rotating drive mechanism. The rotating drive mechanism includes a reciprocating gear mechanism that is connected to a swinging plate located beneath the crystal ball in the base. The doll, fixed to the reciprocating swinging plate, will also have a continuous rocking motion. The color of the eyes of the doll changes as a result of such motion, thereby giving more fun to the invention.

Abstract: The invention includes a conventional exercise bicycle with foot pedals, a chain drive system and a flywheel. Rotating with the flywheel is a first gear which is in mesh with a second larger gear. Located on the face of the second gear, but offset from the center of the gear, is an eccentric which supports reciprocating arms. Movement of the reciprocating arms by the exerciser causes rotation of the second and first gears and, consequently, the flywheel.

Abstract: An apparatus for receiving and discharging coins is disclosed.

Abstract: A drive arm is guided in a play-free and low-friction manner in a guide slot in a driven arm. The guide slot has two side edges which are arranged in displaced relationship with each other. Arranged on the driven arm are two rolling members, wherein a respective rolling member is associated with each side edge. At least one of the side edges is in the form of a spring bar portion so that the two rolling members roll against their side edges under a spring biasing effect.

Abstract: An exercise bicycle includes a frame, a crank shaft journalled on the rear portion of the frame, and a wheel axle journalled on the front portion of the frame. Two crank arms are secured to two ends of the crank shaft and carry two pedals. Two swing wheels are secured to two ends of the wheel axle and carry two crank pins on which two sheaves are sleeved rotatably. Two swing levers are mounted pivotally on the front portion of the frame at the lower ends thereof and have lengthwise extending slide slots in which the sheaves are received slidably. A rear driving pulley and a rear driven pulley are sleeved rigidly on a sleeve which is sleeved rotatably on the crank shaft. A mechanism is provided between the crank shaft and the sleeve so as to interlock them when the pedals rotate in a predetermined direction. A front driving pulley is sleeved rigidly on the wheel axle. A front driven pulley and a wheel are sleeved rigidly on a wheel hub which is sleeved rotatably on the wheel axle.

Abstract: This invention relates to cycle exercisers and is particularly applicable to such exercisers that either alternatively or simultaneously exercise the muscles of the legs and lower torso and muscles of the arms and upper torso. Arm levers for propelling the energy absorbing wheel of a cycle exerciser, do so by acting on crank arms through rotating slidable bearing means operating in slots in the arm levers; the crank arms are connected to a second drive shaft that is linked to the wheel by chain drive means.

Abstract: The invention includes a conventional exercise bicycle with foot pedals, a chain drive system and a flywheel. Rotating with the flywheel is a first gear which is in mesh with a second larger gear. Located on the face of the second gear, but offset form the center of the gear, is an eccentric which supports reciprocating arms. Movement of the reciprocating arms by the exerciser causes rotation of the second and first gears and, consequently, the flywheel. The foot pedals or the reciprocating arms may independently operate the flywheel.

Abstract: A motion conversion apparatus 10 for converting continuous rotary motion into oscillatory, wide angle scanning motion is disclosed herein. The motion conversion apparatus 10 of the present invention includes a link 40 disposed to pivot about a pair of pivot points 33 and 35. The link 40 induces oscillation about a first axis of a member 11 coupled thereto thereby providing output oscillatory scanning motion. The apparatus 10 of the present invention further includes flywheel means 20 and 30 adapted to rotate about a second axis for causing the link 40 to pivot about the pivot points 33 and 35. A shaft 14 operatively coupled to the flywheel means 30 supplies input rotary motion.

Abstract: An exercise bicycle is disclosed comprising: a frame; energy absorbing structure rotated on the frame about a first shaft; a transmission for free wheeling a second shaft using at least one foot pedal, for rotatably connecting the first shaft and the second shaft, for rotating a roller eccentrically through a predetermined orbit relative to a third shaft and for rotatably connecting the third shaft to free the second shaft; a pivot arm which is pivotally mounted at one end to the frame and which has an opposite end which is adapted to be pulled by the human hand; and yoke structure for coupling the arm to the roller such that reciprocating motion of the arm is translated to rotation of the third shaft.

Abstract: A rotatable arm carrying an operative member is pivoted on a main housing (10) for movement between a rest position and a work position. A rotary shaft (28) is also journaled in the housing and can be driven by a wound spring (34) for rotary movement, which is transformed into a reciprocating, partial rotation of the arm by a linkage comprising meshing gears (18, 22) on the arm and on a fixed axis, and a crank and slotted link (24, 26, 30) between said shaft and the gears. A first and a second locking units (12, 14) are mounted stationarily with respect to the housing, each comprising a spring-biased pawl (40, 42) to engage the arm when it reaches said rest position and said work position, respectively, and each being releasable by an external control.

Abstract: An exercise bicycle has a wheel axle which is journalled on a frame. Two swing arms are secured to two opposite end portions of the wheel axle. Two hand operated swing levers are mounted pivotally on the frame at their lower ends. Each of the levers includes an upper lever portion, a lower lever portion, and two parallel rods interconnecting the upper and lower lever portions for defining a slide slot therebetween. Each of the swing arms has a crank pin member on which a sheave is sleeved rotatably. Each of the sheaves has an annular groove of a generally V-shaped cross-section which engages with the arcuated inner side portions of the rods so that the sheave can slide smoothly in the slide slot. A suspended wheel is sleeved rotatably on the wheel axle by a hub. A front pulley is sleeved rigidly on the hub and is connected to a rear pulley by a v-belt. The rear pulley can be indirectly rotated by a user's hands and/or feet.

Abstract: A microsurgery saw comprising drive means for producing rotary motion, rotary-to-lateral converting means operatively driven by the drive means, saw support means for pivotally supporting a microsurgery saw operatively connected to the converting means for transmitting lateral drive motion to the microsurgery saw, drive casing means surrounding and positioning the drive means and saw support casing means surrounding and positioning the saw support means is disclosed.

Abstract: An exercise bicycle has a suspended wheel which is sleeved rotatably on a wheel axle. The wheel axle has a first key-way formed in one end portion thereof, and two opposed second key-ways formed in two opposite sides of the other end portion of the wheel axle. One of the second key-ways and the first key-way are aligned with each other and formed in the same side of the wheel axle. Two swing arms are secured to respective end portions of the wheel axle. One of the swing arms has a first key engaged with the first key-way and the other swing arm has a second key which is selectively engaged with one of the second key-ways so that the first and second keys may be connected to the same side or opposite sides of the wheel axle. Two swing levers are mounted pivotally at their lower ends on a base frame and connected at their upper portions to the respective swing arms. When the swing levers are swung by hand in either the same direction or opposite directions, the wheel can be rotated through a transmission line.

Abstract: In a control device, especially for heating and ventilation systems in mo vehicles, comprising a rotatable control knob and a linearly movable setting member, a lever is provided for coupling the knob and member and converting rotational motion of the knob into linear movement of the setting member. To achieve this, the control knob 2 is provided with a guide slope extending at an acute angle to the axis of rotation. A shorter arm portion of the lever is controlled by the guide slope. A longer arm portion of the lever is actuated by movement of the shorter arm portion against the guide slope and acts upon a coupled setting member in a linear manner.

Abstract: A machine press has a ram that is movable up and down above a work-piece supporting portion formed on one side of a frame, and a double-ended lever pivotably mounted about on a fulcrum shaft extending horizontally in the upper part of the frame, the lever operatively connected to the ram. A cylindrical head is defined at one end of the lever and extends between supporting metal fittings provided on the ram. The other end of the lever is connected to a crank shaft, which extends in the lower part of the frame, through a slider supporting member. The ram is moved up and down above the work-piece supporting portion through the lever which swings under the rotation of the crank shaft. A clutch is operatively connected to the crank shaft and has a driving wheel driven by a motor. A brake is also operatively connected to the crank shaft.

Abstract: A novel rubber band powered balloon is presented. No spine, frame, or other support member is used to resist the tension of the rubber band. Instead, the balloon, formed from a substantially non-elastomeric material, is sufficiently rigid when inflated such that supports for the rubber band can be directly connected to the balloon's outer skin. In addition, one embodiment of the present invention includes a novel flapping-vane propulsion system in which the rotational motion of the rubber band is converted into reciprocating motion of the vane.

Abstract: The invention includes a conventional exercise bicycle with foot pedals, a chain drive system and a flywheel. Rotating with the flywheel is a first gear which is in mesh with a second larger gear. Located on the face of the second gear, but offset from the center of the gear, is an eccentric which supports reciprocating arms. Movement of the reciprocating arms by the exerciser causes rotation of the second and first gears and, consequently, the flywheel.

Abstract: The invention is a mechanism for regulating the speed and stroke of a transverse sealing means for a vertical packing machine using tubular film. The mechanism comprises a cranking disc, and elongated transverse rod and a vertical rod, these members being connected adjustably to each other to regulate the movement of the transverse sealing means.

Abstract: A head for a powered earth-working tool is adapted to be driven by a rotating shaft which is driven by the prime mover of the tool. The head includes a housing having an opening for the shaft; a driver gear in the housing fixed to the shaft which rotates with the shaft about an axis; an axle in the housing disposed perpendicularly to such axis of rotation and carrying a driven gear on a portion of the axle away from the ends to mesh with the driver gear and rotate the axle; a pair of pins, offset from the axis of the axle, mounted to move with the rotation of the axle, 180.degree.

Abstract: The invention relates to an electrically operated toothbrush with oscillating motion, whose angle of oscillation can be adjusted.This is a easily achieved by the fact that the rotation of the electric motor producing the motion can be reversed by pole changing, and thereby the radius of the circular orbit of the bolt of a rotating shaft connected to the holder taking up the slip-on brush in a curve-like opening of a free disc is changed in its dimension, thus producing a variation of the angular deflection of the rotating shaft.

Abstract: A drive mechanism is provided for converting a rotary input to an oscillatory output. The mechanism includes a housing having axially aligned first and second support members. Input and output shafts are journaled within the first and second support members and are substantially axially aligned one with the other. A drive pinion is mounted on the input shaft within the housing and is rotatable thereby. A bevel gear is mounted within the housing and in driving engagement with the pinion. A coupling is provided which has a first end in journaled association with the bevel gear in a position angularly displaced from the rotational axis thereof. The second end of the coupling is pivotally and drivingly connected to the output member at the intersection of the center lines of the bevel gear and the output member.