Abstract: A portable hydraulic floor jack has a saddle member with an axial stem that is provided with an end collar having a flattened side surface. This permits the saddle member to be rotated to a singular orientation in which the flattened side surface of the end collar can bypass a locking pin that is permanently installed transversely of the receiving opening for the stem of the saddle member.

Abstract: A guardrail system for enhanced fall protection during the construction of a multi-story building subsequent to steel erection. The guardrail system includes an elongated bar comprising a first relatively short portion and a second relatively long portion that define an obtuse angle therebetween, and one or more apertures in both the first portion and the second portion of the bar. A plate is provided to be bolted to the first portion of the elongated bar in order to removably attach the bar to a perimeter frame element of a multi-story building frame with the second portion extending upwardly and inwardly into the building. Cable is then pulled through one or more apertures of the second portions of a selected plurality of elongated bars secured to a perimeter frame element to complete the guardrail system.

Abstract: A handrail/leaning rail includes a mounting system adapted to be attached to a wall and an elongated rail separate from the mounting system and removably attached to the mounting system. The rail has a handgrip portion having a top surface and undercut front and rear surfaces shaped for grasping by a user, the rear surface being positioned on the rail to be spaced apart from the wall. A safety blocking portion that is longitudinally coextensive with the handgrip portion and extends rearwardly from a lower base portion of the rear surface of the handgrip portion blocks a gap that would otherwise be left between the lower base portion of the handgrip portion and the wall. The rail also has a wall shield flange portion that extends upwardly from the safety blocking portion and is spaced apart from the rear surface of the handgrip portion.

Abstract: A liquid enriched with a high concentration of gas, in particular, water enriched with oxygen, is produced by mixing the gas and liquid in an overpressurized system using a series of pressure reduction containers which sequentially reduce the pressure on the gas-enriched liquid in a slow incremental fashion, thereby allowing a high concentration of the gas to be maintained within the liquid phase.

Abstract: A carburetor includes a fuel jet having a reciprocal needle received therein for controlling fuel as such fuel flows into an air flow passage of the carburetor. The needle is carried by a reciprocal slide which includes a vent hole in the bottom surface thereof. A rotatable valve plate is carried inside the slide overlying the vent hole. The valve plate is movable between various adjusted positions for changing the size of the vent hole.

Abstract: This device includes a drive device (1) arranged above the reactor, provided with a vertical output shaft (2) equipped at its end with an axial-flow mobile assembly such as a propeller (4) immersed in the reactor; the output shaft of the drive device also carries an auto-suction turbine (5) immersed in the reactor and drivable by the output shaft (2), and the latter is enveloped coaxially by a cylinder (6) linked at its upper end to the drive device and whose lower end (6a) opens out into the turbine; in the upper end of the cylinder is drilled an aperture (14) for injecting a gas into an annular gap (15) delimited by the shaft and the cylinder. This device makes it possible to transfer a gas into a liquid efficiently and to ensure agitation whereby particles may be placed in suspension and held there. Application to the biological treatment of industrial effluents.

Abstract: A fluids contacting and dispersing apparatus for a fluids contacting column is provided comprising a perforated cover plate, means for positioning the cover plate over a tray opening and securing it within the opening. Deflecting members span each perforation in the cover plate to prevent bleed fluid from shooting straight up and hitting the underside of the above tray. The deflecting members also provide a surface for dispersing lighter, finer bleed fluid flowing upwardly through the perforations over a central zone of the cover plate and into heavier fluid flowing across the tray in the path of the cover plate. The deflecting members direct lighter fluid into what would otherwise be a stagnant central zone of the cover plate. The cover plate is positioned over the tray opening by means of legs which are integral with the cover plate and are slidable within the tray opening.

Abstract: An embodiment of the instant invention is an apparatus for diffusing a first substance into a second substance. The apparatus includes a first region where the first substance and the second substance flow in substantially the same direction; and a second region where the first substance and the second substance flow in substantially opposite directions. Preferably, the apparatus is arranged as an outer structure which encompasses the first region and the second region, and which is formed of PP, PTFE, PFA, ECTFE, PVDF, PE, PMMA, ABS, PC, PSO, PES, PEI, PBT, PPS, PEEK, PETG, Keelf, quartz, or any combination thereof. The first substance is, preferably, a substance selected from the group consisting of: ozone, ammonia, HCl, or any combination thereof, and the second substance is a substance selected from the group consisting of: DIW, ammonia, HCl, HF, peroxide, sulfuric acid, or any combination thereof.

Abstract: In a self-pumping type hydraulic shock absorber, an outer cylinder is provided to cover an outer circumferential surface of a cylinder. The outer cylinder is formed to have a small-diameter portion, a mid-diameter portion and a large-diameter portion. A reservoir is formed between the large-diameter portion and the cylinder to communicate with upper and lower cylinder chambers. A cylinder member is fitted onto the mid-diameter portion and the large-diameter portion of the outer cylinder to form an oil tank between the cylinder member and the outer cylinder. A suspension spring (a coil spring) is provided between a spring seat attached to the small-diameter portion of the outer cylinder and a spring seat connected to a piston rod. Thus, the reservoir and the oil tank are provided inside the coil spring, so that each of the reservoir and the oil tank can be made to have a sufficiently large volume and the hydraulic shock absorber requires less space for mounting.

Abstract: A seat suspension assembly for a bicycle has a movable and cushioning intermediate section between a lower seat post part and an upper seat attachment part. The intermediate section comprises parallel bars journalled to a head on top of the seat post, and to the seat attachment part. A springing mechanism is equipped with a system for adjusting the effective spring rate of the springing mechanism.

Abstract: An engine mount with vertical alignment for mounting a powertrain member on a chassis of a vehicle. The engine mount with vertical alignment has a mount body which has a hollow core for housing a metal core. The metal core has at least one channel for accepting a vertically placed bolt, the metal core being held in position by a rubber mount. The metal core interfaces with a mounting bracket that is connected to a powertrain member for vertical mounting onto a chassis.

Abstract: An apparatus for slowing down products in the folder of rotary printing machines. A product-directing system is arranged between the jaw cylinder and paddle wheel, and a driven decelerating-roller pair is integrated into the product-directing system. In order to provide an apparatus which can be adjusted in a straightforward manner and ensures that the products are slowed in a functionally reliable manner upstream of the paddle wheel, the circumference of the decelerating rollers is equal to at least one product length, and the decelerating-roller pair is driven at a non-uniform speed.

Abstract: An improved transport device for transporting signatures from a continuously moving saddle chain has a first pair of belts arranged opposite to each other. A signature moving with continuously speed on a saddle chain is gripped between the pair of belts and accelerated away from the saddle chain to a working station.

Abstract: A method and apparatus for resolving doubles on singulated flat articles being passed in a downstream direction to a takeaway mechanism by use of a doubles resolver mechanism ahead of the takeaway mechanism. The doubles resolver mechanism includes a doubles resolver head through which negative pressure may be applied to articles passing thereunder, and a mount for the head which positions the head against such articles with a substantially constant force regardless of the thickness of the article. Negative pressure is applied to the head except when the head is detected as having resolved a double, at which time such pressure is momentarily removed to permit the double to be cleared.

Abstract: The present invention is directed, in a general aspect, to a nudger for a mixed mail feeder and in particular to an apparatus and method for detecting high stack forces in a stack of mixed mail. The apparatus generally comprises an anti-lean sensor for detecting whether the mailpiece is positioned without improper lean and a stack force sensor for detecting high stack forces at the nudger wall. The method generally comprises the steps of sensing whether the mailpiece is positioned without improper lean and whether the stack of mailpieces is leaning on the nudger wall causing a high stack force which is detrimental to feeding the mailpieces. If high stack forces are present, the apparatus will work to straighten the stack. If the stack does not straighten, the operator is signaled to reorient the stack of mailpieces.

Abstract: To provide a sheet supply device including a long life sheet supply roller. A large radius portion 10a of a sheet supply roller 10 is gradually abraded in association with passage of operation time. Protrusions 12a of an idle roller 12 initially contact a rotational shaft 14 without forming any play between the protrusions 12a and the rotational shaft 14. However, friction force generated between the tips of the protrusions 12 and the rotational shaft 14 wears down the protrusions 12a. As a result, a difference between the radius of the large radius portion 10a and the radius of the idle roller 12 will be hardly decreased even after a cumulative operation time. Therefore, even after the abrasion progresses, sheet supply operations will be operated properly.

Abstract: A top card feeder feeds cards into a receiving device from the top, the top card feeder having a card holder for holding a stack of cards, a door pivotally mounted near the bottom of the top card feeder, an elastic means adapted to pull the card holder upward, a locking mechanism adapted to lock the door and to rotate a pulley assembly in response to the movement of the door, the pulley assembly being coupled to the card holder for moving the card holder vertically within a chamber of the top card feeder.

Abstract: A stacking apparatus comprising a rotatable stacking wheel with a multiplicity of fingers, of which one end is fastened on the circumference of a hub, enclosing a stacking-wheel spindle and between which there is formed in each case one receiving gap for sheet-like articles, said stacking apparatus being characterized in that the width of the receiving gap can be adjusted between an open position, in which the sheet-like articles can be introduced into the gap, and a position in which the sheet-like articles are retained.

Abstract: A vacuum holddown for sheet materials has a surface having a field of vacuum ports in which each individual port is gated. When a vacuum is applied to the underside of the holddown, the gates close. When a sheet of material is introduced onto a region of the field, the gates only within vacuum manifold passageway covered by the material are configured to spring open, applying a suction force to the sheet via the now opened ports. The holddown thus automatically adjusts to material size. An implementation for use in an ink-jet printer with cut-sheet print media is demonstrated.

Abstract: A vacuum transport for a printer or copier guides a sheet through a machine, such as from a photoreceptor toward a fuser. The vacuum transport includes a partially enclosed vacuum chamber having rollers rotatably mounted therein. Portions of the rollers protrude through openings in the top of the chamber. A series of ribs are disposed between the openings. Some of the ribs extend diagonally toward one end of the width of the paper path over the transport.

Abstract: The conveyor line (1) of a conveyor has a branching point (6) with a switch (7). This switch has a pivotable switching member (8) which in one position lies in this conveyor line (1) and in the other position connects this first conveyor line (1) with a second conveyor line (10). Preceding the branching point (6) is a retaining member (11) that can be inserted into the path of movement of the transport elements (2) conveyed along the conveyor line (1). This retaining member (11) can be used to hold back the transport elements (2) approaching the branching point in order to create room for changing over the switching member (8). The transport elements are independent of one another, which makes it possible, selectively and as required, either to move the oncoming transport elements (2) along the first conveyor line (1) or to divert them into the second conveyor line (10).

Abstract: A non-competitive memory enhancement game serves to stimulate the memories of persons suffering from memory loss due to Alzheimer's disease stroke, head injury, or other reasons. The present game includes a series of subject areas or categories, with each of the categories being further divided into general knowledge and individualized or personalized knowledge areas. A series of memory cards is provided corresponding to the various general knowledge subject areas, with a series of transparent envelopes also being provided for the insertion of pictures and related questions or comments therein for the construction of personalized memory cards for individual players. A game board or other suitable playing device is provided with a series of playing positions corresponding to the subject areas of the game. Movement about the playing surface during the game is determined by chance, e.g.

Abstract: An improved version of the game Pai Gow Poker allows a player to bet against the house and/or to bet against the other players. In addition to the conventional betting spot for placing a bet against the banker, an additional betting spot is located in front of each of the players which allows the player to bet against the house. This can be done whether or not the house is the banker. Thus, even if a fellow player has been designated as the banker, each other player can still choose to play against only the house. Each player can, of course, play against his or her fellow player/banker but is not required to do so. Each player can play against the house, against his or her fellow player/banker, against neither or against both.

Abstract: A method of playing a card game. A standard deck of playing cards is used wherein a particular card having a particular value is designated as a dual purpose card that functions as a wild card when face down and a killer card when face up. Each player placing a first predetermined wager and the dealer deals a predetermined number of cards to himself and to each player. At least one of the cards dealt to each player being face down and the card dealt to the dealer being face down. Each player decides whether to stay with the first predetermined wager or place a second predetermined bet that is larger than the first predetermined bet. The dealer deals an additional card to himself and to each player wherein the additional card to each player is face up and the additional cards dealt to the dealer are face down. Next, it is determined if any of the players' face up cards is a killer card. Any player with a killer card must surrender his or her bets and withdraw from play. These steps are repeated.

Abstract: A coin-operated item vending and game apparatus includes a coin-operated item vending machine and a game module. The vending machine includes a support base, coin deposit, vendable items dispenser, globe and elongated central support member. The game module includes a housing, target and flexible resilient lever. The housing is disposed within the globe. The target is disposed within the housing. The lever is disposed below the target and extends through the housing and globe such that an outer end of the lever is disposed exteriorly of the globe. A depression defined on the lever receives a coin. The outer end of the lever is manually depressed downwardly by the user causing bending of the lever from an initial condition and creating an upward force because of the resiliency of the lever. Release of the lever by the user allows the lever to spring back to its initial condition and toss the coin upwardly such that the coin will either make or miss the target depending on the skill of the user.

Abstract: A piston ring combination including at least one compression ring and at least one oil ring. If a plurality of compression rings are provided, an outer peripheral surface of at least a top ring is formed with a first ion plating layer. The oil ring has a pair of side rails whose outer peripheral surfaces are formed with second ion plating layers. These layers are formed of Cr—N mixture. The first ion plating layer has a porous structure with a porosity ranging from 3 to 10% and a hardness ranging from 1000 to 1500 Hv. The second ion plating layer has a dense structure with a porosity ranging from 0 to 3% and a hardness ranging from 1800 to 2200 Hv.

Abstract: A coextruded valve stem seal is provided that includes a sleeve having an upper and lower portion, a central vertical axis, and a generally concentric aperture. The sleeve includes an inner layer an inner layer of a resilient sealing material, such as a rubber, and an outer layer of a coextrudable rigid material, such as a plastic material. The lower portion of a preferred embodiment of the sleeve may include a radially extending flange. A method for making the valve stem seal in accordance with the principles of the invention is also disclosed.

Abstract: A packing yarn and a method of manufacturing a packing yarn utilize at least two bands that are at most 5 mm wide and are joined together by a yarn manufacturing method. The bands are formed of a laminate having at least one layer of flexible graphite foil and at least one layer of a plastic foil with a tensile strength of at least 25 MPa and an elastic modulus of at least 0.4 GPa. The layers of graphite foil and plastic foil are joined by adhesive bonding, by a non-adhesive-like coupling agent or by welding. The bands are produced from the laminates by cutting, which is preferably effected continuously.

Abstract: A rotary chuck having a chuck body supporting a plurality of clamping jaws for movement between open and closed positions and defining a cylindrical piston chamber containing an axially movable double acting piston coupled to a jaw actuator. A plurality of springs contained within the piston chamber apply biasing force to the piston in one axial direction to urge the jaws toward closed positions. An incrementally adjustable pneumatic control system is operable to apply pressure to the piston in opposition to the springs to reduce the resultant clamping force applied by the jaws in closed position. The control system is also operable to act in consort with the springs to increase the resultant clamping force applied by the jaws in closed position.

Abstract: A chuck device for a tool bit includes a spindle with a stub formed on an end thereof, a tube including a first section mounted around the stub of the spindle and a second section, a sliding sleeve slidably mounted around the tube, and a ball partially received in a transverse countersink in the second section of the tube. A first elastic member is mounted around the tube and attached between an outer shoulder of the tube and an inner shoulder of the sliding sleeve. A second elastic member includes a first end received in the stub and a second end in the tube. When the chuck device is in a condition not receiving a tool bit, the ball is moved out of the longitudinal hole of the tube and partially located in the annular groove of the sliding sleeve under the action of the second elastic member, and the first elastic member is in a compressed status.

Abstract: A tool holder includes a body, a collet, and a collet mover. The body is formed to include a collet chamber and a collet-mover chamber arranged to communicate wit the collet chamber. The collet includes a tool-gripping surface arranged to define a tool-receiving chamber adapted to receive a machine tool therein. The collet is mounted for movement in the collet chamber along a central axis of the body between a tool-grip position to cause the tool-gripping surface to move radially inwardly toward the central axis to grip the machine tool in the tool-receiving chamber and a tool-release position to cause the tool-gripping surface to move radially outwardly away from the central axis to release the machine tool. The collet mover is positioned to lie in the collet-mover chamber and is coupled to the collet to draw the collet along the central axis to the tool-grip position.

Abstract: Apparatus and methods for coupling a driving shaft and a mating tool shaft to transmit rotational forces and axial tension and compression forces between the shafts. The coupler provides for axial tension transmission through tension transmission surfaces spaced-apart from torque and compression transmission surfaces of the mating tool shaft. Reversible shaft locking means prevent accidental disconnection of the driving shaft and mating tool shaft. A separate safety lock release attachment is preferably removed during tool shaft rotation and can automatically hold the driving shaft stopped when used to release the shaft locking means for a tool change. An optional reversible mechanical interlock further ensures that the driving shaft will remain stopped during a tool change. Malfunciton (e.g., improper seating) of the shaft locking means with the attachment ring in place results in a positive visual indication of the malfunction.

Abstract: An in-line skate with a main skate frame, a skate boot coupled to the skate frame, a carriage frame pivotally coupled adjacent to an anterior end of the main skate frame, a plurality of wheels rotatably coupled to the carriage frame to form a pivoting wheel group, and at least one wheel rotatably coupled adjacent to the posterior end of the main skate frame to form a fixed wheel group. A pivot axis of the carriage frame can be horizontally located anterior to a reference point that is three-tenths of the length of the open inner volume of the skate boot from the anterior end of the open inner volume, and the pivot axis could be aligned with or anterior to the anterior end of the skate boot. The pivot axis can be vertically located immediately adjacent to the sole of the skate boot, or it can be coincident with or distal to the sole of the skate boot relative to the wheels of the in-line skate.

Abstract: A boot/sport article assembly wherein the boot has at least one locking member, the sport article has at least one associated locking device complementary to the locking member to define at least one locking system, respectively, and at least one element of each locking system is elastically displaceably mounted in the vertical direction so as to block the boot against the sport article by traction in the vertical direction during the locking operation.

Abstract: Roller skate comprising a chassis (2) equipped with rollers (3) and a boot (1) attached removably to the chassis at four points by catching and locking. Catching and locking are achieved automatically and simultaneously at all of the attachment points using a common element (8) subject to the action of an elastic means (16). Unlocking is achieved using a lever (19) articulated to the rear of the chassis and which can be used as a handle when putting the chassis on.

Abstract: A snowboard having a front section connected to a back section by a bendable connector. A rider places one foot on the front section and the other foot on the back section. The bottom of both sections have a series of curved longitudinal ridges positioned so that the bottom of each section curves in a convex manner both front to back and side to side. The rider's feet may be restrained from horizontal movement along the top surface by a recess in the top surface or by protrusions in the top surface.

Abstract: A portable cart, for use in camping, hunting and other outdoors activities carries canoes, small boats, game, injured parties or hauled cargo by hand. The portable cart can be converted to a canoe or boat cart which can be folded down and transported within the canoe or boat, or to a game cart for transporting game over long, rough terrain, or to a cargo hauling gear cart, all of which can broken down into a carrying position, by hand or by back. The portable cart can be carried by hand or as a backpack over rough terrain. Its width can be varied to accommodate watercraft of varying widths. The cart has optional removable clamps for clamping a conventional transportable carrier, such as a stretcher or stokes-type rescue carrier bed, thereto. Another optional bicycle pull clamp includes an ant-tipping attachment resisting centrifugal force urging said cart to tip over during a directional turn of the cart-hauling bicycle.

Abstract: A dual child seat nestable shopping cart including a front overhanging basket, at least two inwardly-facing child seats positioned behind the basket on opposite sides of the cart, each seat having an upright backrest arranged along the opposite sides of the cart, wherein the seats and backrests are positioned such that a front overhanging portion of a basket of a similar cart may be nested over the seat and between the backrests for enabling nesting of similar carts when the seats are unoccupied. The child seats may constitute a portion of a single shopping cart assembly or may be constructed as a module for retrofitting a conventional standard nestable shopping cart.

Abstract: A wire dispensing utility cart adapted to carry wire spools for dispensing wire during installation. The present invention provides a relatively large utility cart for carrying multiple and large spools of wire in a mobile fashion for dispensing wire during the installation of electrical wiring into buildings, structures, aircraft, and the like. The cart is mobile and relatively compact to facilitate movement of the cart through standard sized doorways and elevator bays, and is sufficiently large to accommodate a large number of wire spools. In addition, the cart provides at least two elongated storage bays to facilitate transportation of relatively large objects such as ladders, conduits, and other materials and supplies needed for the installation process.

Abstract: A foldable skate board assembly includes a board having a front wheel and a rear wheel attached thereto, two mounting seats mounted on the board and each including a first notch and a second notch, and a steering column including a lower end attached to the front wheel to move therewith and an upper end. The steering column includes an inclined extension pivotally connected between the mounting seats by a pivotal pin. Two handles are attached to the upper end of the steering column. A slider is slidably mounted to the inclined extension of the steering column. A positioning member is mounted to the slider to move therewith. An elastic element is mounted between the pivotal pin and the slider.

Abstract: A skateboard comprising a rigid elongated board having front and rear portions, and front and rear wheel trucks mounted to the underside of the board. The wheel trucks each have multiple wheels mounted in-line. A steering platform is at the front of the board for use by the rider to steer the board. The steering platform is rotatable and is connected by a linkage system to the wheel trucks wherein, by rotating the steering platform, each wheel within their respective truck is equally angularly displaced to effect a turning movement of the board.

Abstract: A foldable skateboard device has a board, a holding seat disposed on a front portion of the board, a down tube inserted in the holding seat, a front tube connected to the down tube, a front wheel disposed on a bottom of the front tube, and a rear wheel disposed on a rear end of the board. The down tube has an annular flange. The holding seat has a hollow connection portion receiving a lower end of the down tube, a recess, and an upper confining portion. A pivot pin fastens the hollow connection portion of the holding seat and the lower end of the down tube together. A sleeve is disposed on a middle portion of the down tube. An elastic element encloses the down tube.

Abstract: A load distribution unit is utilized in a vehicle suspension system having at least one pair of laterally adjacent forward wheel assemblies, and at least one pair of laterally adjacent rear wheel assemblies. A wheel ram is associated with each of the wheel assemblies, each wheel ram including a major chamber therein. The load distribution unit includes a plurality of fluid chambers, each fluid chamber being divided into at least two control chambers by at least one piston supported therein. Two pairs of the control chambers which vary in volume proportionally and in opposite senses therein with piston motion are system chambers, and at least two of the remaining control chambers are bump chambers. The pistons are interconnected by at least one connection device. The major chamber of each wheel ram is in fluid communication with a respective system chamber. The vehicle suspension system provides a roll stiffness and a pitch stiffness while providing minimum cross-axial articulation stiffness.

Abstract: A running board storage device being mounted in conjunction with a land vehicle where the running board storage device can be used as a step to facilitate entry and exit through an access door of the vehicle. The storage device may comprise a drawer which is movable between a retracted position where access into the drawer is prevented and an extended position where access into the drawer is permitted. Also, the storage device could have an entry door arrangement where an upper door and a lower door open simultaneously in a “clamshell” opening arrangement. The storage compartment of the running board can be divided into an upper section and a lower section with elongated members such as skis, pipes and the like being capable of being stored in the upper section. The lower section may optionally include one or more drawers.

Abstract: A tow bar for attaching two bicycles in tandem arrangement consisting of a hollow rod, tube, or pipe having an attaching strap traversing the length of the interior of the rod or pipe, with the strap being secured to frame members of each bicycle via a friction clamp at each bicycle without the need for tools. Further, the tow bar consists of an assembly of four or more segments that have removeable couplings by which each such segment is attached to an adjacent segment, thereby facilitating ease of assemble and disassembly of the tow bar. Such segments, when disassembled, can be easily stored in a conventional bicycle pouch that can be attached to a frame member of the bicycle.

Abstract: The invention relates to a mobile standing device for use in rehabilitation. The running wheels of the device are drive-connected to driving handwheels by chain or belt drives. In order to reduce the risk of injury or accident with a standing device of this type, the chain or belt drives are arranged in such a way that they are enclosed, preferably inside the front frame tube of the standing device.

Abstract: A scooter having a rider-operated mechanism for driving the scooter forward includes an endless chain loop for transferring propulsion to one wheel of the scooter. In one aspect, a first sprocket wheel is mounted in a vertical plane below the footboard, and a drive link extends from a pedal to an eccentric mounting pin on the sprocket wheel. A second sprocket wheel assembly, including a ratchet gear, is mounted on the shaft that supports the driving wheel, and an endless loop chain extends about the two sprocket wheels below the footboard. When the pedal is depressed, the link rotates the first sprocket wheel and the chain, driving the second sprocket wheel to rotate the drive wheel and propel the scooter. In another embodiment, a first gear wheel is mounted in a vertical plane below the footboard, and a second gear is mounted coaxially with the first sprocket wheel. and disposed to engage the first gear. A drive link extends from the pedal to an eccentric mounting pin on the first gear wheel.

Abstract: The invention relates to a single-track two-wheeled vehicle, in particular a bicycle, electric bicycle, electric scooter or motor scooter. The vehicle comprises a front section and a rear section which are both pivotably connected to each other by a pivot mechanism (1-4) arranged substantially centrally between the front and the rear wheel. The front section comprises a front wheel suspension with the front wheel (11), a handlebar (21) offset towards the front in relation to the pivot mechanism (1-4), and a connection member (21′) of the handlebar (21). The rear section comprises a rear wheel suspension with the rear wheel (10) and a saddle support (26′) on which the saddle (26) is mounted. A drive unit (40-53) is provided which is either part of the front section or the rear section, the front wheel suspension and the connection member (21′) on which the handlebar (21) is mounted forming a first unit which cannot be rotated.

Abstract: The bicycle frame of the invention is formed by selecting and adhesively joining previously formed and precured composite tubes to previously formed and precured composite lug components.

Abstract: A method of constructing a wheelchair that is durable, lightweight, economical and fully adaptable to any end user's requirements, such as sizing, convertibility, environment and lifestyle, and the resulting wheelchair, is disclosed, made possible by the utilization of specially designed weld-free connector fittings with any desirable or available tubular materials.