Abstract: Spring cushions (10) having slow-acting pocketed spring cores (12) characterized by the individual springs of the cores (12) being pocketed within semi-impermeable fabric material and a method of making such pocketed spring cores (12).

Abstract: A gas spring assembly includes a first end member, a piston assembly and a flexible wall extending therebetween. The piston assembly includes a piston body receiving a portion of the flexible wall and a retainment ring for retaining the flexible wall on the piston body. A method of assembly is also included.

Abstract: The invention is directed to a hydraulic bearing with biaxial damping with an axial and radial damping characteristics which can be defined essentially independent of one another. The hydraulic bearing consists of a housing and an axially and radially operating elastomeric damping arrangement received in the housing. The damping arrangement has several chambers adapted to receive a hydraulic damping means and formed, with respect to the axial and radial orientation of the bearing, in pairs, with each chamber pair interconnected by at least one channel. The upper housing section is constructed as a support body consisting of an inner core, and the outer wall of the upper housing section radially separated from the inner core, and a spring connected with the inner core and the outer wall by vulcanization.

Abstract: A system and method for isolating a mass from vibration including an actuator 34 operably connected to the mass 32, the actuator 34 being responsive to a combined control signal 46; a position sensor 36 operably connected to measure position of the mass 32, the position sensor 36 generating a position signal 38; a comparator 51 responsive to the position signal 38 and a position setpoint signal 58 to generate a position error signal 50; and a combination controller 40 responsive to the position error signal 50 to generate the combined control signal 46; wherein the combination controller 40 adjusts the combined control signal 46 to change system characteristics when the position error signal 50 is outside an operating range.

Abstract: A vibration isolation device which damps vibration of an object includes a vibration isolation unit which can be activated in a plurality of vibration isolation modes, an acquisition unit which acquires estimate information associated with vibration of a floor, and a control unit which selects a vibration isolation mode from the plurality of vibration isolation modes in accordance with the estimate information acquired by the acquisition unit, and activates the vibration isolation unit in the selected vibration isolation mode.

Abstract: A spring screw assembly includes a screw, an inner tube having a spring mounted therein, and a retainer tube being covered by a color coat. The inner tube is axially movably assembled into the retainer tube, and the screw may be extended into the retainer tube and the inner tube to extend through the spring with a rack portion near an upper end of the screw tightly engaged with an upper open end of the retainer tube. Therefore, screws of different sizes and retainer tubes with different color coats may be separately kept in stock, and screws meeting customer specifications may be assembled to retainer tubes having colors meeting customer color management system at a later time to complete the desired spring screw assemblies.

Abstract: A clamp that includes a bar and a jaw assembly. The jaw assembly is configured to receive the bar to therethrough and to be slidably positionable along the bar. The jaw assembly comprises a lever that forms an aperture through which the bar passes, the lever being movable between an engaged position and a disengaged position within the jaw assembly, wherein if the lever is at the disengaged position within the jaw assembly the lever is slidable along the bar and if the lever is at the engaged position within the jaw assembly the lever engages the bar to hold the lever at a fixed position along the bar, and wherein the lever has a shape that is not substantially straight and reduces the positional difference between the engaged position and the disengaged position.

Abstract: Disclosed is a multi-axis workpiece manipulator or positioning device (10) having movement along two rectilinear axes (L1 and L2), two pivotable or tilt axes (T1 and T2) and two rotational axes (R1 and R2). The positioning device (10) includes a support base (12), a first member (18) attached to the support base (12) extending axially therefrom and a carriage (24) adjustably connected to the first member (18). The support base (12) is movable in a longitudinal path along a first rectilinear axis (L1) and the carriage is movable along the first member (18) in a vertical path along a second rectilinear axis (L2). A second member (30) is pivotably and rotatably attached to the carriage (24) and extends axially away from the carriage (24). The second member (30) can pivotably move along a first tilt axis (T1) with respect to the carriage (24) and can rotate in a circular path along a first rotational axis (R1).

Abstract: A sheet processing apparatus for binding a sheet bundle by a binding member having a curved shape, including: a support portion configured to support, as a sheet bundle, a plurality of sheets having punch holes formed therein; an adjustment portion configured to adjust a position of each of punch holes formed in the sheet bundle so that a locus of centers of the punch holes continuing in a thickness direction of the sheet bundle supported by the support portion is aligned with the curved shape of the binding member; and an attaching portion configured to attach the binding member to the punch holes of the sheet bundle in which the position of each of the plurality of sheets is adjusted by the adjustment portion.

Abstract: Provided is a printing arrangement having a driving station operatively driving pages along a path, an adhesive application station to apply a two-part adhesive to opposed sides of sequential pages to facilitate binding of such pages, and a printing station to print upon the pages. The printing arrangement has a page binding support tray which includes a tray suspended from a frame via dampers, said tray operatively receiving the pages after printing and after the adhesive has been applied. The tray also includes a vibrator arranged below a corner of the tray, and a number of semicircular disks spaced apart from each other and fixedly mounted to a common rotatably driven shaft extending along an axis of rotation arranged on the frame. The disks and shaft are configured to bind the pages by applying pressure to the adhesive when said shaft is driven.

Abstract: A simplified sheet sensor and registration gate for feeding print media sheets from a stack loaded by a user into a receptacle on a photocopier. The gate is pivoted on the mechanism and has a flag attached; and, upon user loading of sheets into the receptacle, the gate is pivoted against a locking arm and the flag is moved to actuate an optic sensor that sheets have been loaded. The locking arm is pivoted on the nudger roll arm and unlocks the gate when the nudger roll is moved down to contact the top sheet in the stack. When the sheet receptacle is unloaded, the gate is pivoted by gravity to the downward position and the locking arm pivots by gravity to reset. If the nudger is raised for sheet jam clearance, the locking arm is pivoted to clear the gate, allowing the gate to drop. The locking resets by gravity.

Abstract: A document feeding device includes an upstream guide member that forms an upstream side of a document conveying path along which a document is guided from a sheet feeding tray to a platen, and a downstream guide member located between the upstream guide member and the platen. The document feeding device has a guide moving mechanism that slidably moves the downstream guide member away from an opposite guide member located opposite the downstream guide member upon a pivoting operation of the upstream guide member. Consequently, even if the document conveyed toward the platen is, for example, inappropriately conveyed to cause jamming, the document can be easily removed without being damaged.

Abstract: In order to separate printing plates and intermediate layers present in pairs, suckers having a delimiting device are known which, on the basis of the different flexibility of intermediate layers and printing plates, permit these to be separated from one another. For particularly thin intermediate layers, this configuration reaches its limits. Accordingly, by moving a suction element slowly downward at a speed V1 from a second position at a distance from the printing plate stack, accurate gripping of an intermediate layer by the suction element can be ensured. This is improved substantially further in particular as a result of the fact that the suction element is moved slowly toward the stack surface by the intermediate steps in a range from 0.25 mm to 0.5 mm.

Abstract: A paper feeding device comprises an upper frame, a pickup roller assembly connected to the upper frame and a lower frame. The pickup roller assembly includes a roller frame, a separating roller, a pickup roller, and a belt sleeved on both the separating roller and the pickup roller. The separating roller and the pickup roller are connected to the roller frame. The belt impels the separating roller and the pickup roller to press against the roller frame. When the separating roller rotates, the friction created between the separating roller and the roller frame and the friction created between the pickup roller and the roller frame drives the pickup roller assembly to rotate, then the paper is fed into the paper feeding device. The structure of the paper feeding device is simple and the cost is lower than the conventional one, moreover, it is convenient to assemble.

Abstract: The invention relates to a slot assembly for a scanner for feeding multiple-sized sheets. The scanner has an input tray for holding a plurality of sheets, a feed path which receives sheets fed from the input tray, and a sheet feeder located in the teed path for feeding sheets. The slot assembly has a first slot for accepting sheets having a first size, the first slot being complementarily sized with respect to the first-sized sheets such that the first-sized sheets are fed by the sheet feeder substantially without being skewed. The slot assembly also has a second slot for accepting sheets having a second size, the second slot being complementarily sized with respect to the second-size sheets such that the second-size sheets are fed by the sheet feeder substantially without being skewed.

Abstract: This is a paper-handling system using a motor driven frictional drive element to push a paper sheet into a compiling tray. The tray has a registration wall where a paper sheet is abutted to align a paper stack. The system uses a sensor to convey relevant information to the motor and drive element as to the location of the top paper sheet vis-à-vis the registration wall. By instructing the motor and drive element on the top sheets location, better and more consistent paper-stacking alignment is accomplished.

Abstract: A ten sided die within a translucent or transparent 6-sided die that is used for generation of numbers from zero through 59, primarily for the generation of lottery numbers.

Abstract: A dice game machine of the present invention has: a table on which a plurality of ice roll, the table having pockets in which at least one of the plurality of dice drops; a vibration section for vibrating the table to roll the dice on the table; a player terminal, which enables a player to perform BET operation while predicting at least either of rolled numbers of the dice existing on the table after vibration of the table stops and rolled numbers of the dice that have dropped in the pockets; a rolled-number recognition section for recognizing rolled numbers of the plurality of dice that has stopped after vibration of the table stops; a controller for controlling vibration of the table and a timing at which the vibration of the table stops; accepting BET operation from the BET operating section; and controlling payout processing of a gaming value corresponding to a payment, with referring to rolled numbers of dice specified by the rolled-number recognition section.

Abstract: Various contact systems and methods for manufacturing and using such are disclosed herein. Examples of the contact systems include a surface with one set of pads biased at a first voltage level, and another set of pads biased at a second voltage level. Such a contact system can be used, for example, to transfer power to an electromechanical device disposed thereon. In one particular example, the electromechanical device can include a power storage element and two or more couplings. When one of the couplings contacts a pad biased at the first voltage level, and another of the couplings contacts a pad biased at the second voltage level, a circuit is completed where some derivative of the differential between the first voltage level and the second voltage level is placed across the power storage element. Completion of the circuit causes the power storage element to charge. Power can be drawn from the power storage element to operate the electromechanical device.

Abstract: A unique game called Lightyear is described which is about space in which players play games of strategy, rescue, conquest, discovery, trivia and the like. The game may be realized as a board game as well as a computer game playable on one computer or using a network of computers connected using Internet or other wired or wireless networks. The board game version of Lightyear comprises of a game board with all the planets of the solar system drawn and laid out in a unique way on the board around the sun. The game board further comprises of one or more orbits around the sun. The orbits may be oval or circular or any other shape. There may be connectors between the orbits. The players play the specific version of the game on this board with play astronauts and play spaceships.

Abstract: This present invention is a four or more player card game that accentuates the sub-culture of the Christian Church using conventional Bible references, in addition to national Church Surveys and Christian Church Clichés references. It is a two-team game, comprised of three rounds with the objective being to become the team to accumulate the highest number of points by the end of the final round.

Abstract: The method of the present invention involves a poker game in which a player is dealt a plurality of cards from which he makes a plurality, N, of starting hands. Each starting hand has a wager associated with it. After the player sets his starting hands, an opposing house starting hand is created, preferably from a number of cards capable of creating a plurality of starting hands. The player's first starting hand is completed as is the opposing house hand. If the player's first completed hand beats the opposing hand, the player receives an award and the player's next completed hand is compared to the opposing hand. If the player's first completed hand loses to the opposing hand, all wagers are lost and the game is over. This process continues until all N starting hands have been completed and evaluated or until the player loses the nth starting hand resulting in all nth to N wagers being lost.

Abstract: Equipment for playing a card game, in particular Black Jack, includes a playing table provided with a cover divided into sectors for players and a dealer playing place, a unit for identifying and recording the value symbols of the cards, a game monitoring system provided with a unit for detecting the presence of objects on the table, units for controlling bets of the players arranged in each player sector, game control units arranged in each player sector, a credit control unit arranged at the dealer playing place, a unit for visualizing the game control orders of the players arranged at the dealer playing place, a computer which is connected to individual functional units by means of wire or wireless communication elements and is provided with an electronic data processing system, a device for displaying data items processed by the computer, and an information storage system.

Abstract: A series of strategy cards that provide a convenient means for players of a Texas Hold'em Poker game to judge the strength of their pre-flop hands, otherwise referred to as their hold card sets or combinations. The relative strength of hold cards in Texas Hold'em Poker changes based on the number of players that are in a pot. The relative strength information is presented to the player in an easy to understand matrix that utilizes ordinal rankings and possibly a color coding scheme. The strategy systems may be shaded based on expected value, and the hold card sets may be abbreviated to allow both easy reference and allow printing onto small form factors that are convenient for pocket storage.

Abstract: A training device for installation in a practice area is provided, the training device providing an indication to a user as to where on a first surface of the training device a football should be aimed. The first surface is configured to allow the ball to pass through the first surface, where it is collected and returned to the user. The training device is also configured to indicate to the user approximately where in the practice area the football will be returned to, so as to allow the user to position themselves accordingly.

Abstract: A displacer unit with a valve plate body is disclosed. The displacer unit having at least one displacer space which is arranged in a cylindrical drum rotating about an axis of rotation and which can be connected to an inlet connection and an outlet connection by means of a control surface. The control surface is formed on a valve plate body which is provided with a first control opening, which is connected to the inlet connection, and with a second control opening, which is connected to the outlet connection. The first control opening and the second control opening are spaced apart radially, where the displacer space can be connected to the first control opening by a first connecting passage and to the second control opening by a second connecting passage. The connecting passages are provided with a respective mechanical face seal for sealing relative to the control openings.

Abstract: A seal comprises the combination of a primary seal and a secondary seal each of which acts on at least one shoe that is installed with clearance relative to one of a rotor and a stator in a position to create a non-contact seal therewith. The at least one shoe is provided with a surface geometry that influences the inertia of fluid flowing across the seal, and, hence, the velocity of the fluid and the pressure distribution across the seal, ultimately affecting the balance of forces applied to the seal.

Abstract: A bearing sealing arrangement for rotating machines uses a radially-acting labyrinth seal (2) to minimize bearing lubricant leakage and an axially-acting screw-type gasket (3) to return what fluid escapes through the labyrinth seal to the bearing (10). In embodiments, the labyrinth seal uses rings (4) with plastic wear surfaces formed about internal metal bands, the plastic forming corresponding profiles on the ends (27,28) of the bands so that the profiles interlock when overlapped to form the rings. The screw-type gasket preferably includes rotor-mounted helical fillets (22) formed in a section (21) that is retained in a seat (20) on the rotor. The section in embodiments is retained by inserting a ring-shaped key (23) into the section, thereby forcing the section into undercuts of the seat. The arrangement is particularly useful in wind machines, such as wind-turbines.

Abstract: A piston pump for the hydraulic energy supply in a motor vehicle, comprising a piston that is movably arranged in a stepped bore of an accommodating member that is provided with a closure, the piston carries a seat for an elastic sealing element which accommodates the sealing element with axial play, and with radial elastic preload for the purpose of sealing between piston and cylinder. The seat for the sealing element has a structure which generates forces pointing radially towards a piston axis and expanding the sealing element in a radial direction, and that the structure produces an elastic deformation of the sealing element for an increased and dosed sealing contact pressure between piston and cylinder.

Abstract: The invention is directed to developing for the high sealing capacity of the Shaftseals by means of applying elastic cylinder of which both inside and outside surfaces are either inclined or plain to be fixed on the opening of the housing in being compressed onto the surface of the rotating shafts at the inside rubber cylinder.

Abstract: A flange (3) for sealing an opening (1) of a fuel container (2) of a motor vehicle maintains an electronic component (9) which is arranged on the external side (5) on a carrier (12). The carrier (12) is embodied as a single piece and has a heat-conducting element (13) which can penetrate the wall (4) of a flange (3). The heat-conducting element (13) dissipates the heat which is produced by the electronic component (9) to the inside (7) of the fuel container (2).

Abstract: According to the invention, a sealing disc (16) serves to seal off a fuel injector with respect to an engine block of an internal combustion engine. Said sealing disc (16) comprises an inner opening (24) and a captive securing means (28) for captive retention on the fuel injector. It is proposed according to the invention that the sealing disc (16) has, overall, at least one support layer (30) and at least two sealing layers (32, 34) arranged to each side of the support layer (30), wherein the support layer (30) is made from a stiffer material than the sealing layers (32, 34), and that the captive securing means comprises, at an edge of the inner opening, at least one radially inwardly extending lug-like projection (28).

Abstract: The seal comprising a rubber-elastic body (5) that, in the middle, comprises a first through opening (6) for receiving a first part (3) and, in a peripheral edge (7), comprises a flange (8) for detachably fixing the body (5) inside an opening (23) of a second part (2). The first through opening (6) is made in a wall (9) that extends from a front side (17) toward a rear side (19) of the body (5) through a significantly larger second through opening (10) of the peripheral edge (7). The wall (9) and the first through opening (6) can move like an eye in the peripheral edge (7). The seal (1) is particularly suited for use in the automotive industry and, in particular, as a wiper sleeve.

Abstract: The invention relates to a seal intended for sealing an axis pair, whereby the axes rotate in the same direction, the inner one of the axes is inside the outer axis and the phase difference of the axes is arranged to remain within prede-fined limits. The seal (200) is a tubular seal made of an elastic material and comprises at least two tube sections (202, 204) fixed to each other. Folds (212, 214) of the at least two tube sections (202, 204) have opposing twisting an-gles. One end of the seal (200) is fastened to the outer axis and the other end is fastened to the inner axis, and the seal (200) is arranged to twist by a torque proportional to the phase difference between the axes.

Abstract: Connector assemblies for use with implantable medical devices having easy to assemble contacts are disclosed. The connector assemblies are generally formed by coupling a plurality of ring contacts, sealing rings, and spring contact elements together with at least one holding ring to form a connector having a common bore fore receiving a medical lead cable. Contact grooves or spring chambers for positioning the spring contact elements are formed in part by assembling multiple components together.

Abstract: A gasket commonly used for a plural kinds of objective members to be sealed, the objective members having the same outer shapes and differently figured plural bores to be sealed.

Abstract: A tool-bit holder (10) for varying tool-bit shank profiles comprising a hub (12) having a longitudinal bore (28) adapted for receiving a tool-bit shank (66, 70, 80). The hub (12) has a plurality of radial slots (38) communicating with the first section (30) of the longitudinal bore (28). The tool-bit holder (10) has a collar (14) fixedly attached to the hub (12) adjacent the open (29) and disposed annularly about the hub (12). A sleeve (16) is axially slideably mounted and disposed annularly about the hub (12). The sleeve (16) has a plurality of radial bores (48), each being in communication with a respective radial slot (38) of the hub (12) with a detent ball (18) disposed within each. A spring (20) is provided for biasing the sleeve (16) towards the open end (29) wherein the detent ball (18) engages an inner ramp face (46) of the collar (14).

Abstract: Disclosed is a ride level control system for a motor vehicle composed of a pneumatic spring (1), a connecting line (3) which connects the pneumatic spring (1) to an atmospheric port (5), and a first valve (2) which, in a first switched state, disconnects the connecting line (3) and, in a second switched state, clears it, wherein a vessel (4) is arranged in the connecting line (3) between the first valve (2) and the atmospheric port (5).

Abstract: The present invention is a shock absorbing tandem roller skate including a shoe or boot, a shoe plate secured to the shoe, at least one shock absorbing unit secured to the shoe plate, at least a first pair of wheels secured to the at least one shock absorbing unit, at least a second pair of wheels, a first brake unit for providing braking to the at least a first pair of wheels, and a second brake unit for providing braking to the at least a second pair of wheels. The shock absorbing mechanism of the at least one shock absorbing unit flex and absorb shock horizontally and diagonally in a simultaneous manner to provide a steering mechanism for the user. The present invention is also directed to skateboards and scooters that may utilize the shock absorbing technology of the present invention.

Abstract: A multiple-section recreational board is formed in two or more sections. Contiguous sections of the recreational board arc coupled together by one or more bridges which provide the structural integrity generally equivalent to an integral one piece recreational board. The bridges may be latched by an integral or separate latch mechanism. In accordance with one aspect of the invention, the multiple-section recreational boards are relatively easily disassembled and reassembled and are relatively less complex to manufacture than known multiple-section recreational boards.

Abstract: This invention relates to an improved snowmobile ski having a vertical fin on the topside of the ski with a surface area large enough to minimize or prevent sideways slippage of the ski during a turn. The fin, if a single fin is used, is located adjacent the outboard edge of the ski. A snowmobile ski with dual topside fins having outwardly projecting lips along the upper edges of said fins has improved performance in deep snow.

Abstract: A foldable golf cart has a folding mechanism interposed between a handle part and a frame; the frame has first and second rod parts; the folding mechanism includes a fixed piece secured to the first rod part, an acting piece positioned around the second rod part in a movable manner, a cylinder interposed between the fixed piece and the acting piece, a connecting rod, and a cam-headed pressing bar, which is pivoted to one end of the connecting rod at its cam-shaped head for moving the folding mechanism between a loosening configuration and a fixing one; the fixed piece, the acting piece and the cylinder have opposing toothed sides; the connecting rod is passed through the fixed piece, the acting piece, and the cylinder, and securely joined at other end to a threaded element positioned on an outer side of the fixed piece.

Abstract: An accumulation/disposal bin includes a container body with an upper opening. A lid is mounted on a hinge on the forward wall of the body, to pivot about an axis proximate the upper opening. The lid pivots about the forward edge of the opening, allowing a lock to be formed on the rear edge of the lid. Edge mounted wheels may further be located proximate the rear bottom of the container, diagonally across from the hinge. The bin may further include a lifting slot on the rear wall. A handle may be formed proximate the upper opening on the rear the bin. The lid may comprise a downwardly sloped ramp extending from an opening in a horizontal plane to beneath a portion of the lid that at least partially covers this horizontal plane. The ramp and the covering portion of the lid define first and second slots each in a generally vertical plane. The second slot provides an entrance to an interior of the container body.

Abstract: A device for stabilizing and supporting wheelbarrows which maintains the balance and increases the resistance of a system (wheelbarrow) including an angled monolithic body which is made up of two arms which define a triangular shape, whose ends have holes for the insertion of affixing means to affix to the leg of a wheelbarrow. In one embodiment, one of said arms makes up an arched area along most of its length which generates two points of support, a first point of support defined on the end of the joint affixing with the leg of the wheelbarrow and a second point of support defined in the area near where the two arms meet to define that angle. The arched area of the arm, positioned substantially horizontally and defining the two points of support, absorbs deformation, and also absorbs the load applied to the element, bringing more stability to the wheelbarrow on flat or irregular surfaces, providing a stabilizer comprised by each leg.

Abstract: The present invention relates to an axle suspension for heavy vehicles, in particular trucks, comprising an axle beam which bears axle parts projecting over at oppositely disposed sides, each axle part preferably bearing a wheel drive; an axle beam bearing which permits upward and downward movements of the axle beam as well as pendular movements of the axle beam around a substantially lying pendular axis transverse to the longitudinal direction of the axle parts; a spring device for the resilient support of the upward and downward movements of the axle beam at a vehicle frame; and also a pendular damping device for the damping of the pendular movements of the axle beam.

Abstract: In installation structure and method of a vehicular suspension, each of left and right suspension links couples a corresponding one of the left and right side members with the suspension member and is provided with a breakable portion which breaks due to a load generated when the load applied to a forward end portion of at least one of left and right front side members causes a drive unit and a drive shaft to be moved toward a rearward direction of a vehicle body to bring the drive shaft in contact against a corresponding one of the left and right suspension links.

Abstract: A suspension device including two lower links that link a wheel supporting member and a vehicle-body side member to each other. The links are disposed substantially in parallel in a vehicle width direction. At least one projecting portion extends from at least one of the two links towards the other link. At least one elastic linking portion links the projecting portion of one of the links to at least one of the other link and the projecting portion of the other link. The at least one elastic linking portion has a rigidity that increases when a vibration input frequency increases to a value in a predetermined frequency band.

Abstract: A manually retractable side step assembly for a vehicle includes a rotatable step having a latch mechanism and a spring system that work in concert to rotate the step from a stowed position to a deployed position. In a stowed position, the step is in line with the running board of the vehicle. However, depressing a release button automatically rotates the step 180°, thus exposing an enlarged step area for providing ease of access to a roof rack on a minivan, SUV, or sport wagon, or if used with a pick-up truck, ease of access to a toolbox that is located in the rear of the truck.

Abstract: A base for a bicycle saddle includes a body having a narrow anterior portion, a wider posterior portion, a longitudinal axis dividing the body into a right portion and a left portion, and an opening extending along the longitudinal axis of the body. Two supporting plates extend respectively and downwardly from the underside of each of the portions of the body in such a way that two cushion means are defined under the body. A coupling member is disposed on a free end of each of the supporting plates and corresponds to the opening to define an open receiving room between the two supporting plates for receiving means for coupling the base to a bicycle frame.

Abstract: A propulsion and exercise device for attaching to a conventional wheelchair having: at least one drive wheel operably interposed between the rear set of wheelchair wheels. A telescoping mast may connect the drive wheel axle to pedals to permit the pedals to be selectively moved from a stowed position to an extended position for use. Power is transmitted from the pedals to the drive wheel through a chain drive that passes over idler sprockets that maintain the chain length during adjustment of the telescoping mast.