Extensible and knockdown

This disclosure teaches a foldable bicycle divided into a front frame part and a rear frame part. The front frame part and the rear frame part are hingedly connected together. A front fork and steering assembly is hingedly connected to the front frame part. A saddle supporting assembly is hingedly connected...     

A collapsible vehicle which in the exemplary form is a two wheeled vehicle driven by pedals and a sprocket chain. The frame is articulated with joints between frame members, permitting collapsing of the frame members into a substantially parallel relationship in the plane of the frame. Further joints...     

Bicycle, in particular a folding bicycle, substantially comprising elements manufactured out of rectangular strips of thin sheet material of substantially the same width which have been folded and bent and with interhooks composed into hollow profiles which may be filled with hard plastic foam.

This invention relates to an improvement in folding girl's and tandem bicycles. The improvement expands the capability of bicycle folding means into girl's and tandem model configurations and provides a commonality of construction which can be incorporated into men's model configurations. The improvement...     

A portable foldable motor scooter with a substantially triangular chassis, each corner of which is pivotable and one leg of which is hinged to allow the chassis to be folded to a collapsed condition. A steering column is pivotally connected to the forward corner of the chassis and is detachable from...     

A cambering vehicle having pivoted trailing arms interconnected through a cambering device including a two-piece bell crank which has a lever-operated locking pin that allows the trailing arms to be locked together and folded towards the vehicle frame so as to provide a compact package which can be readily...     

A cambering vehicle having pivoted trailing arms interconnected through a cambering device including a bell crank consisting of two wing members which are connected together by a gearing arrangement and combined with a lever-operated locking device that allows the trailing arms to be freely movable for...     

A cambering vehicle having pivoted trailing arms interconnected through a cambering device including a two-piece bell crank that allows the trailing arms to be locked together and folded towards the vehicle frame so as to provide a compact package which can be readily stowed.

A cambering vehicle having pivoted trailing arms interconnected through a cambering device including a two-piece bell crank that incorporates locking means for allowing the trailing arms to be locked together for parking purposes and also folded towards the vehicle frame so as to provide a compact package...     

A foldable bicycle including a frame having a seat structure and a handlebar structure thereon. A front wheel is rotatably mounted on the frame structure through a front column, and a rear wheel is mounted on the frame structure and is powered through a pedal structure including a sprocket connected...     

A cambering vehicle employing a cambering device which interconnects the trailing arms for controlled pivotal movement and includes means for locking the trailing arms together and for allowing the vehicle to be folded into a compact configuration so as to facilitate stowage thereof.

A child's convertible pedal tricycle readily assembled into upright and underslung configurations is disclosed. It has an integral plastic frame member with upright and underslung seating walls on opposite sides, a pair of rear wheels on its rear end, a front fork member removably, reversibly and rotatably...     

A two wheeled, electrically powered vehicle having an outer contour resembling a piece of luggage and including a handlebar controlled steering column which is retractable into the luggage shaped vehicle to facilitate the carrying of the vehicle. The steering column is connected to one of the wheels...     

This invention, which provides a folding bicycle, comprises a foldable frame structure including a front support assembly having handlebars and arranged to be rearwardly foldable. According to the invention, the user can very quickly and easily fold the bicycle by manually rearwardly folding the front...     

A skateboard comprising a platform upon which a rider stands, a front wheel assembly, a back wheel assembly and means interposed between said platform and said wheel assemblies to provide for an improved riding performance.

This invention teaches a foldable bicycle divided into a front frame part and a rear frame part. The front frame part and the rear frame part are hingedly and slideably connected together. A front fork and steering assembly is hingedly connected to the front frame part. A saddle supporting assembly is...     

A three-point cambering vehicle having an upright steering frame supporting a steerable contact and a pair of rearwardly positioned and laterally spaced contacts which are connected to the steering frame through spring means for allowing cambering of the vehicle when the operator leans into a turn.

A novel tricycle wherein a seat and rearward wheel assembly are movable together and are variably secured to a central frame section toward or away from the forward wheel and handlebars in order to accommodate various sizes of riders while maintaining the same weight distribution of riders with respect...     

The present invention concerns a novel folding bicycle in which the rear wheel is mounted in a rear frame hinged to the main frame of the bicycle so that the rear frame can be folded beneath the bicycle. The main frame is also provided with a hinge and the handlebars fold downwardly. Special quick release...     

A wheeled vehicle primarily useful for play purposes can be constructed so that it can be manipulated or folded between an open position in which the vehicle can be used and a folded, relatively flat position in which it can conveniently be shipped and stored. The vehicle described includes sides or...     

A collapsible wheeled vehicle having a frame which includes a head tube and bottom bracket interconnected by a down tube. A seat tube, chain stay and strut are pivotally mounted on the bottom bracket. A first cable is connected at one end to the head tube and extends to the end of the chain stay with...     

A velocipede has a frame with front and rear frame parts interconnected by a coupling so that the velocipede may be collapsed for storage or shipment, and so that it may be converted into different forms such as a tricycle or a bicycle, for example. In the illustrated examples the velocipede has a typical...     

A collapsible bicycle using union coupling assemblies attached to bisected frame bars and a bisected handlebar gooseneck which allow the bicycle frame to be separated into two sections and the handlebars to be removed. The union coupling assemblies consist of a threaded memeber, a flanged member, and...     

A fork assembly for use in removably mounting a pair of bicycle fork tubes having longitudinally extending upper and lower brackets on a fork mounting tube of a bicycle frame comprising an inner tube rotatably mounted within the fork mounting tube and a rod extending through the inner tube. The brackets...     

A portable folding bicycle for compact storage in a folded position utilizes a main frame having front and rear frame sections supporting front and rear wheels and hinged together for folding and positioning the wheels into compact side-by-side relationship. A seat structure is removably attached to...     

A folding bicycle comprises a frame, a front wheel and handlebars at the front end of the frame, a chain-driven rear wheel at the rear end of the frame, and a saddle carried at an intermediate part of the frame. The frame comprises a base formed as generally-aligned end-to-end tie members pivotally connected...     

It is an object of the invention to provide a bicycle, which starting from a kit of components is very simple to mount, and which in mounted condition in spite of a low price produces a stable bicycle, which is resistant to rough handling and negligence, and which has the requirements for good functioning...     

An operator powered vehicle configured to be ridden by an operator in an upright or forced weight position wherein muscle force provided to pedals is augmented by the weight of the operator and by an upward force provided by the operator's arms on the handle bars. Lever-type pedal arms having an up and...     

A bicycle frame, having the usual front fork, back fork, steering head sleeve and pedal shaft sleeve has an oblique tube, extending towards the steering head sleeve, which is pivotably connected to the back fork and is substantially in alignment with the back fork. A bar extends from the pivot point...     

A foldable, portable bicycle in which the handlebar, is elongated post, the seat assembly, the pedal crank and the frame are foldable quickly and easily into a compact and regular-shaped package that is easily portable and storable, and are unfoldable with similar speed and ease into a safe, durable...     

A foldable, portable bicycle in which the handlebar, its elongated post, the seat assembly, the pedal crank and the frame are foldable quickly and easily into a compact and regular-shaped package that is easily portable and storable, and are unfoldable with similar speed and ease into a safe, durable...     

A foldable, portable bicycle in which the handlebar, its elongated post, the seat assembly, the pedal crank and the frame are foldable quickly and easily into a compact and regular-shaped package that is easily portable and storable, and are unfoldable with similar speed and ease into a comfortable bicycle...     

A foldable, portable bicycle in which the handlebar, its elongated post, the seat assembly, the pedal crank and the frame are foldable quickly and easily into a compact and regular-shaped package that is easily portable and storable, and are unfoldable with similar speed and ease into a safe, durable...     

A foldable, portable bicycle in which the handlebar, its elongated post, the seat assembly, the pedal crank and the frame are foldable quickly and easily into a compact and regular-shaped package that is easily portable and storable, and are unfoldable with similar speed and ease into a safe, durable...     

The present invention pertains to a foldable bicycle including a main frame comprised of a front frame portion and a rear frame portion, a handlebar structure, a removably, adjustable seat structure, and two removable wheels. The two wheels include a front wheel and a rear wheel both of which are removably...     

A folding bicycle assembly generally having a front and rear subassembly which pivot about a sprocket hub to nest with each other to provide a compact assembly for storage or transfer. The bicycle assembly utilizes wheels of a standard size and is equipped with pedals and handle bars that fold to further...     

A foldable, portable bicycle in which the handlebar, its elongated post, the seat assembly, the pedal crank and the frame are foldable quickly and easily into a compact and regular-shaped package that is easily portable and storable, and are unfoldable with similar speed and ease into a safe, durable...     

A foldable bicycle has separate front and rear frames coupled to each other at a seat post formed by concentric frame members. A locking mechanism positions the frame members in either a rigid open or folded position. The pedal housing is located on the rear frame member either as an extension of the...     

A folding tricycle comprises a main frame having a rear frame member pivotally connected to a rear end thereof and a front fork pivotally connected to a front end thereof. A pair of wheels is rotatably mounted to the rear frame member and a front wheel is rotatably mounted to the front fork. Handle bars...     

A foldable bicycle frame includes a lower frame and a front frame pivotally mounted on the lower frame, the lower frame having fork elements supporting a rear wheel axle. A seat tube is pivotally mounted on the lower frame. A front support stay is pivotally mounted on the front frame and is also pivotally...     

A frame for a folding bicycle includes a base frame having a triangular configuration, the base frame having a pair of back forks and a pair of lower stays joined to a pair of end members respectively. A main pipe is interconnected between the pair of back forks and the pair of lower stays, and a quadric...     

A foldable, portable bicycle in which the handlebar, its elongated post, the seat assembly, the pedal crank and the frame are foldable quickly and easily into a compact and regular-shaped package that is easily portable and storable, and are unfoldable with similar speed and ease into a safe, durable...     

This invention relates to an improvement in men's and ladies' folding and tandem bicycles. The improvement provides commonality of structural and mechanical means and commonality of configuration components between a men's and ladies style bicycle, and tandem bicycles. This invention provides a bicycle...     

A frame for a bicycle in which two beams, which intersect to form a cruciform, in side elevation, extend between a head tube and a seat tube. Each beam being structurally efficient in the transverse plane. The cruciform being rendered structurally efficient in the vertical plane by a tie running beneath...     

A multipurpose externally controlled device that comprises an alternator, a compressor, and a centrifugal pump. The external power takeoff of the engine assembly provides, through a flexible transmission cable, motion to the shaft of the alternator. This, in turn, passes on rotary motion alternately...     

A tricycle which is capable of being converted either to a traditional high position in which a rider is seated relatively high on the frame, or to a low slung position in which the frame is inverted so that a rider is seated relatively low on the frame. To invert the frame, a front fork and handlebar...     

A bicycle having a frame provided with a chain and sprocket assembly. The pedal cranks on the front sprocket of the sprocket assembly are pivotally coupled at their outer ends to a pair of bars near to but spaced from the front ends of the bars, the rear ends of the bars being slotted to shiftably receive...     

A foldable bicycle frame includes a substantially vertical center tube at a mid portion of a bicycle frame, an upper center tube and a lower center tube to be partially fitted in upper and lower ends of the center tube, respectively. A front half of the bicycle frame includes the center tube and a rear...     

A portable bicycle has an elongated first part carrying the handlebars and front-wheel fork at its forward end which can fold into the first part and concealed by swinging a second part down from its upright position and a third part forwardly and upwardly. The second part carries the seat and the third...     

A knock-down tricycle has its main structural parts made of stamped metal or molded components which are relatively inexpensive to fabricate and which, when disassembled, occupy a minimum volume allowing the tricycle to be shipped in a knocked-down condition in a minimum size package. The various components...     

The folding bicycle which includes front and rear wheels and a sprocket and pedal assembly mounted to a frame and a steering column and a seat column mounted to such frame, is provided wherein the seat column and the steering column fold into proximity with the frame and substantially in the plane of...     

A low-drag bicycle comprising an elongated, two piece, generally tubular frame of elliptical cross-section extending between the front and rear wheels wherein the cyclist assumes a recumbent position over the frame facing down and powers the cycle by means of a pedal arrangement and transmission directly...     

A bicycle having a pair of wheels and a frame formed of two crossing bars that are detachable from each other so as to form a separate unicycle and a pedal bike, one of which includes a handle bar at a top, and the other a seat at its top, while each has one wheel at a lower end.

A convertible wheeled vehicle which is capable of assembly into any one of a plurality of different vehicles includes a front wheel frame assembly. A wheel is mounted to the front wheel frame assembly. A chassis assembly has at least one wheel. A pair of vertically spaced plates extends from the front...     

A collapsible bicycle comprises a triangular frame formed from three struts A, B and C. The bottom strut C can be disconnected from the forward strut B by operating a releasable pivot joint J so that the strut C can be folded up against the rear strut A. A universal joint between struts A and B then...     

A seperable multiple-wheel cycle includes an upper coupler operatively coupling or uncoupling a left top-tube portion of a top tube secured toward a rear wheel and a right top-tube portion of a top tube secured toward a front wheel, a lower coupler operatively coupling or uncoupling a left down-tube...     

A foldable pedicab has a foldable assembly which includes a main frame, two back frames mounted rotatably on the main frame, two seat frames mounted rotatably on the back frames respectively, two armrest members mounted rotatably on the back frames respectively, and two footrests mounted rotatably on...     

A folding recumbent bicycle wherein a bicycle of recumbent design includes a three-section main frame which folds at two hinged locations; a steering bar which folds at a hinged location and handlegrip members which fold to lie along the steering bar; and a seat and backrest which fold down essentially...     

A new design of collapsible/folding bicycle construction which mainframe, handlebars, footpedals are all collapsible. Another main feature is that the connections of the mainframe, handlebars, seat stem, seat reinforcement rods are all adjustable, thus allowing minimal space consumption and enable easy...     

A two or three-wheeled vehicle, motorized or not, in which the handle-bar and the front fork are hinged to the steering hub so that they can be upset from their normal operative position to a contracted vehicle position reduced in overall dimensions, in which the front wheel center is put underneath...     

A foldable multipurpose bicycle includes a foldable main frame, a foldable handlebar assembly, a removable seat assembly, a pair of foldable pedal assemblies, a front brake assembly, and a foldable rear brake assembly. By using a pair of quick-release lock mechanisms, a pair of wheels can be connected...     

A bicycle which comprises a frame carrying at its rear end a wheel actuated by a pedal mechanism while the front end carries a collar. A brace is pivoted to the frame in the region of the pedal mechanism and so is a saddle post. The front end of the brace also carries a collar, both collars are slideable...     

A disassemblable three wheeled, sulky vehicle for the handicapped and others desiring assistance has a steerable front wheel drive unit comprising a steering column mounting assembly with a motor driven wheel. A sulky frame assembly supports a pair of transversely spaced apart rear wheels in tricycle...     

A kit of parts for assembling a number of toy vehicles having at least a bucket, two spine members with each having one portion of its length extending at an angle to the other, a support member, three wheels each with an axle therefor, and connectors for all these parts. The parts are all so constructed...     

A lightweight foldable wheelchair is provided which comprises a seat having a base and a back hingedly attached to the base, the back being foldable to overlie the seat base; a pair of large wheels each demountably attached to the end of an axle at the bottom rear of the seat base and rearward of the...     

A bicycle with collapsible frame, which incorporates front and rear frame posts and at least one cross-beam interconnecting said frame posts. The bicycle, which with one of a few simple hand manipulations, in a few seconds, can be folded into a compact unit. The bicycle has an absolutely rigid frame...     

A mechanism for adjusting vehicle handlebars includes a lower hub intergral with a vehicle steering column, and an upper hub formed as an integral part of the handlebars. Two opposed diamond-shaped plates rotationally receive both hubs. Two locking gears, one integral with each hub, form various interlocking...     

A foldable bicycle with separate complete front and rear frames joined at the seat post by concentric frame members. An alignment mechanism automatically actuates as the frames are rotated into a frame open position. A binder bolt mechanism locks the frames open in a rigid orientation. The bicycle frame...     

An improved folding bicycle comprising a folding hinge mechanism as well as a set of foldable handle-bar and a collapsible seat structure. During normal use, the folding hinge mechanism is easily associated with multi-securing effect to ensure the safety of ride. While stored, it can be alternatively...     

A two wheel semi-recumbent bicycle provided in several embodiments on which the rider sits elevated above the rear wheel on a high-back bucket style seat supported by an angled top tube. The position of the pedal crank assembly is forward and upward of the pedal crank position of conventional bicycles...     

A foldable tandem bicycle employs three separate frames joined at concentric seat tubes. The frames have quick release clamps to lock the frames into an open rigid orientation. The center frame has several configurations, male one having a closed complete frame with one diagonal brace and a female one...     

A modular power drive scooter, including as modular components a seat, a seat post, a mainframe, a trailer and at least one battery, is built in a manner allowing quick and easy disassembly of the scooter for compact storage. In assembled form, the seat post supports the seat and also serves as a lock...     

A linkage for attaching an auxiliary handlebar having tubular ends to a bicycle handlebar having tubular ends includes a first member adapted to be axially secured and rotationally movable within each tubular end of the auxiliary handlebar and an adjustable linkage adapted to be variably positioned within...     

The support member of a motorcycle simulation push toy which connects the wheel to the handlebars is fashioned from a pair of telescoping pieces so that the length of the support member can be adjusted. The support member can be fixed at several predetermined lengths by means of a plurality of through-bolts...     

A foldable bicycle which is characterized by a top bar of the main frame having two angled and pivotally connected sections allowing the front portion of the bicycle to be folded downwardly and backwardly toward the rear portion of the frame by a two-piece support bar provided between the main frame...     

This invention relates to a collapsible bicycle and in particular to one including a top tube, a seat tube pivotally connected with one end of the top tube, a down tube pivotally connected at the lower end with a lower end of the seat tube and being collapsible at the intermediate portion, a reinforcing...     

An all-purpose frame 1 is provided which extends at an angle from a rear-wheel fork 5 attachable to the rear axle of a bicycle to swivelable steering connection 6 to a front-wheel 17 of the bicycle. The frame 1 can be a rectangular-tube beam 40, an I beam 42, a channel beam 44, a foam beam, a honeycomb...     

A personal mobility vehicle including rear and front frame sections which are quickly and easily engageable and disconnectable one to another. The rear frame section has a pair of coaxial rear spaced wheels and a pair of locator pins laterally extending preferably from each side margin adjacent each...     

A foldable bicycle having a main frame that supports front and rear wheels that are each connected with the main frame by quick release hub fasteners to enable quick disconnection from the frame of each of the front and rear wheels. The main frame includes a pedal drive bearing housing that rotatably...     

A foldable tandem bicycle employs three separate frames joined at concentric seat tubes. The frames have quick release clamps to lock the frames into an open rigid orientation. The center frame has several configurations, unisex one having a closed complete frame with one diagonal brace and a second...     

The invention is an improvement on a tricycle of the type having a rear drive wheel and a pair of forward steering or guide wheels. The improved tricycle has a rigid frame extending along a central axis. Lateral supports extend from either side of the frame, each such support having a guide wheel mounted...     

A conversion bar for converting a female style bicycle to a male bicycle. The bar is comprised of two, elongated sleeve segments telescoped together for sliding, longitudinal adjustment. Mounting assemblies are pivotally attached to the free end of each sleeve segment for angular orientation as required...     

An improved, highly portable, collapsible scooter having a front frame extending upwardly from a front portion of a lower frame and being pivotally secured thereto. The front frame is secured at its upper end to steering means, and a front wheel is rotatably secured to the steering means. A rear wheel...     

Bicycle with folding frame having a frame defining a lower longitudinal member which rotatably supports a rear wheel and a pedal crank shaft. A saddle upright and a handlebar upright are hinged to the lower longitudinal member, are substantially parallel to one another and are joined by an upper cross-member...     

With the bicycle in its normal standing position, the front fork (16) with its front wheel (6) is, by means of the handle bar assembly (700), turned 180.degree. to the rearward direction, and in this position it is blocked from turning, in that the handle bar elements (701, 702) are folded down, each...     

A foldable bicycle frame comprises a front triangular portion and a rear triangular portion. The former includes a top tube, a down tube, a head tube and a seat tube while the latter contains a bottom bracket tube, a seat stay, a chain stay and a seat tube. Both front and rear triangular portions are...     

An improved, self energizing bicycle saddle post clamp easily operated by local or remote control from a handlebar lever. The design is self energizing, with holding action increasing with load. No adjustment is required; small variations in post size or wear are self compensating. Basically only one...     

A bicycle of the "mountain bike" type having two aligned foldable joints in the frame, a folding handlebar assembly and a foldable pedal. Each of the frame joints is mounted in a gap in a tubular frame member and includes two disks disposed flushly against the ends of the tubular members with smaller...     

A collapsible, portable golf cart including a main frame assembly and a wheel assembly operatively connected to the main frame assembly for movement of the main frame assembly along a surface. The golf cart further includes a collapsible support assembly operatively connected to the main said frame assembly...     

Disclosed is a bicycle frame folder including two pivoted folding frames, a stop block received in between the folding frames and driven by a control lever to lock the folding frames in the closed position or to unlock the folding frames for permitting them to be opened in folding up the bicycle frame...     

A personal mobility vehicle arranged for disassembly and assembly to facilitate transporting of the vehicle. A unitized drive unit, composed two drive wheels, a motor and a transmission for driving the drive wheels in response to the motor, is selectively mounted on and removed from a unitized support...     

A bicycle frame includes a front frame having a cross bar, a rear frame including a center post, and a leaf-spring-like flexible plate interconnecting the cross bar to the center post. A shock-absorbing member is pivotally secured at its ends to the front end of the cross bar and to the bottom of the...     

A two-wheeled vehicle comprising a frame having two wheels suspended rotatably therein, whereof the one is driven and the other is steerable relative to the frame via a subframe, wherein the frame bears a saddle-like seat element in addition to a rotatable steering member, wherein the subframe for the...     

A foldable bicycle frame comprises a front frame made up of a head tube, a top tube and a down tube, and a rear frame made up of a seat tube, a bottom bracket tube, a seat stay and a chain stay. The top tube is provided at the rear end thereof with a connection tube to receive therein a seat post. The...     

A foldable bicycle including (a) a stem tube including a first section slidably mounted in a second section pivotally linked to a third section, a handle bar mounted on the first section of the stem tube, the third section of the stem tube rotatably mounted in a head tube and (b) a top tube comprising...     

A drive unit of a bicycle includes a crankshaft having a pair of cranks, a chain wheel fixed to the crankshaft, and a free wheel fixed to a rotating shaft of a rear wheel and rotatably mounted on the crankshaft. An opposed pair of support frames rotatably support the crankshaft as well as the rear wheel...     

A controlling mechanism for folding mechanism includes a front frame member and a rear frame member. A coupling mechanism generally includes a coupling tube which forms also a part of the front frame member and a coupling shaft which forms also a part of the rear frame member. The coupling tube can be...     

A recumbent bicycle designed to be flexible in its geometry, adjustable in wheel base, position of seat, position and angle of front fork steering head tube mechanism, lead of front wheel bearing position on front fork, and/or position of foot pedal crank mechanism, allowing ergometric optimization for...     

Several embodiments of fully adjustable motorcycles so as to permit the use of a single motorcycle as either a touring or racing machine. The handlebar assembly is adjustable along an arc as are the foot pegs with the center of movement of the arc being midway disposed between the handlebar and the foot...     

This invention discloses a front wheel steering, front wheel drive, light weight, foldable, ground transportation vehicle. The disclosed vehicle is constructed for convenient manual transformation between a deployed operating configuration, for transporting one or more passengers, and a compactly folded...