US20070222175A1 - Folding bicycle - Google Patents

Folding bicycle Download PDF

Info

Publication number
US20070222175A1
US20070222175A1 US11/804,756 US80475607A US2007222175A1 US 20070222175 A1 US20070222175 A1 US 20070222175A1 US 80475607 A US80475607 A US 80475607A US 2007222175 A1 US2007222175 A1 US 2007222175A1
Authority
US
United States
Prior art keywords
seat
stay
folding bicycle
wheel
coupled
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/804,756
Inventor
Miko Mihelic
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Studio Moderna SA
Original Assignee
Studio Moderna SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to SI200200101 priority Critical
Priority to SI200200101 priority
Priority to SI200200308 priority
Priority to SI200200308A priority patent/SI21365A/en
Priority to PCT/IB2003/001243 priority patent/WO2003086848A1/en
Priority to US10/461,017 priority patent/US7229089B2/en
Application filed by Studio Moderna SA filed Critical Studio Moderna SA
Priority to US11/804,756 priority patent/US20070222175A1/en
Assigned to STUDIO MODERNA SA reassignment STUDIO MODERNA SA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MIHELIC, MIKO
Publication of US20070222175A1 publication Critical patent/US20070222175A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62KCYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K25/00Axle suspensions
    • B62K25/04Axle suspensions for mounting axles resiliently on cycle frame or fork
    • B62K25/12Axle suspensions for mounting axles resiliently on cycle frame or fork with rocking arm pivoted on each fork leg
    • B62K25/14Axle suspensions for mounting axles resiliently on cycle frame or fork with rocking arm pivoted on each fork leg with single arm on each fork leg
    • B62K25/16Axle suspensions for mounting axles resiliently on cycle frame or fork with rocking arm pivoted on each fork leg with single arm on each fork leg for front wheel
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62KCYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K13/00Cycles convertible to, or transformable into, other types of cycles or land vehicle
    • B62K13/02Cycles convertible to, or transformable into, other types of cycles or land vehicle to a tandem
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62KCYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K15/00Collapsible or foldable cycles
    • B62K15/006Collapsible or foldable cycles the frame being foldable
    • B62K15/008Collapsible or foldable cycles the frame being foldable foldable about 2 or more axes

Abstract

A foldable bicycle includes a central portion of the frame, which defines the bicycle's geometry, that is substantially rigid. That is, the down tube, seat tube, top tube and bearing tube are substantially fixed relative to each other. Another feature of the foldable bicycle is that the front wheel can be folded into a position between the down tube, which is comprised of two tubes. Yet another feature is a tandem bicycle configuration that does not extend the length of the frame or the wheelbase.

Description

    CROSS-REFERENCE TO RELATED APPLICATIONS
  • This application is a divisional of U.S. patent application Ser. No. 10/461,017, filed Jun. 12, 2003, which is hereby incorporated in its entirety by reference herein.
  • FIELD OF THE INVENTION
  • The present invention generally relates to folding bicycles that can be folded into a relatively compact arrangement, and unfolded for riding.
  • BACKGROUND OF THE INVENTION
  • Bicycles that can be folded have an advantage of a relatively compact arrangement for storage or transport, making them popular with users wishing to reduce storage space, such as commuters, recreation enthusiasts, and campers, among others. Known folding bicycles have a myriad of shortcomings when compared with standard non-folding bicycles. For example, known folding bicycles have a frame of two or more pieces, which can be dismantled, folded or telescopically shortened. In some known folding bicycles, the folded dimensions can be further reduced via removal of their wheels.
  • In some conventional bicycle folding joints are situated in the central area of the frame, such as within one or more of the down tube, top tube, seat tube and head tube, or bearing tube. A disadvantage of such an arrangement is that the frame's rigidity is reduced, which can detrimentally affect pedaling efficiency, and overall stability.
  • Another disadvantage associated with such known folding bicycles is that the joints that enable folding can develop a gap, or “play” over a period of usage. This play results in a bicycle that flexes, reducing pedaling efficiency, as the force applied to propel the bicycle is partially absorbed by the flexing joints. In addition, the joints themselves can be weak points in the bicycle, and can cause structural failure, instability or other undesirable riding characteristics.
  • A further disadvantage is that known folding bicycles have frames that frequently are smaller than the frames of a comparable standard non-folding bicycle. This reduces the ergonomic suitability for a rider. A result of this for many riders is a decrease of the distance that can be ridden with comfort. Riding discomfort can decrease pedaling efficiency, and decrease riding characteristics are less favorable due to the different position of front wheel and smaller wheel size compared to the non-folding bicycles.
  • Therefore, there exists a need for a folding bicycle that is ergonomically comfortable when riding, optionally has a unitary central frame structure, optionally can be readily folded into a compact arrangement, and/or optionally can maintain its structural rigidity and integrity despite repeated folding and unfolding.
  • SUMMARY OF THE INVENTION
  • The present invention alleviates to a great extent the disadvantages of known folding bicycles, some of which are discussed above, by providing a bicycle that is foldable into a compact size, while still having a central frame without any folding joints. The foldable bicycle of the present invention, preferably is foldable while generally providing a riding experience and durability of a standard non-folding bicycle.
  • One embodiment of the present invention includes a central frame assembly of a down tube, a seat tube, a top tube and a bearing tube, wherein the down tube, seat tube, top tube and bearing tube are substantially fixed relative to each other. This arrangement can promote ergonomic riding characteristics of a non-folding bicycle.
  • The foldable elements of present invention optionally include a foldable front fork assembly, a foldable rear-wheel assembly and a foldable handlebar assembly. Although each of these assemblies are optional features of the present invention, they operate together to reduce the folded size of the foldable bicycle, rendering it for example more easily transportable. The optional front-fork assembly mounts the front wheel on its lower end, and is jointed at or near a connector strut. In operation, the front fork assembly includes linking bars connecting the upper end at the frame with the wheel, at its axle. The joint can be operated to unlock and allow the front fork assembly to rotate about the joint, in the direction of the down tube assembly of the frame. The down tube of the frame preferably has two spatially separated portions spaced apart from one another. So, when the front fork assembly is rotated about the joint, the wheel can fold into the area between the separated portions, thereby rotating into the center of the frame, through the two spaced apart portions of the down tube. Alternatively, the wheel and front fork assembly can be rotated 180° prior to being folded about the joint.
  • The optional handlebar assembly also serves to reduce the folded dimension of the foldable bicycle. In particular, the handlebars are mounted to a tube in a locked, but unlockable fashion. When it is desired to fold the bicycle, the handlebars are unlocked, and rotated downwards, preferably to a position that is within the area of the central portion of the frame. In a preferred embodiment, the handlebars are fully turned 180° prior to folding, and the handlebars are then unlocked and rotated downwards to a position in which one handle grip is on the left side of the central portion of the frame, and another handle grip is on the right side of the central portion of the frame. Then, using a lockable joint, the respective handlebars can be folded inwards towards each other, and can be folded inwards a sufficient amount so that the handle grips cross one another.
  • The optional rear wheel assembly also serves to further reduce the folded dimension of the foldable bicycle. In this embodiment, a strut assembly descends at an angle from beneath the seat to the rear wheel axle. Preferably the strut assembly includes spatially separated, or parallel, bars, between which the rear wheel is mounted. At a location between the seat and the rear wheel axle, the strut assembly includes a locking assembly. When the locking assembly is released, the rear wheel rotates upwards, between the spatially separated bars of the strut assembly. In a preferred embodiment, the compactness of this arrangement can be enhanced by using dual transmission chains, with an intermediate sprocket. The chain stays, together with the rear wheel, are foldable upwards toward the seat. To facilitate the folding of the chain stays and the rear wheel, the transmission from the chainring to the sprocket is complemented by two sprockets and a shaft, i.e. consists two chains in series, which results in an additional transmission ratio. The shaft also serves as a pivot, around which the chain stays and the rear wheel fold. The front chain remains between the front chainring and the intermediate sprocket, on the shaft, while the rear chain remains between the intermediate sprocket and the rear sprocket, and shifts upwards together with the chain stays and the rear wheel without changing the distance between the front chainring and the intermediate sprocket or the distance between the intermediate and rear sprockets. In this embodiment, the rear wheel is rotated about the intermediate sprocket when folding the wheel upwards. The chain stays, together with the rear wheel, is foldable upwards toward the seat. In riding position, power is transmitted via a chain from a pedal sprocket to the intermediate sprocket and then via a second chain from the intermediate sprocket to a rear wheel sprocket mounted at the rear wheel axle. If the rear wheel is removed, the length of the bicycle can be further reduced in the folded position.
  • To reduce the width of the folded bicycle, the pedals can also be folded.
  • In an alternate embodiment of the present invention, a foldable tandem bicycle is provided. In this arrangement, a second seat is situated behind the front seat, and a second set of pedals is provided. In the tandem arrangement, a second set of pedals is not necessarily required. For example, footrests can be added at any suitable position for receiving a second passenger's feet, but preferably in a location safely away from operative components or the first pedals. In addition, as an alternative to the second seat, or in addition to the second seat, other optional components can be added, such as a child seat, basket, briefcase holder, rack, etc. Such components can be attached in a similar fashion and location as the second seat.
  • In a further embodiment, the bicycle can be equipped with a motor providing torque at one of the sprockets or the chainring.
  • These and other features and advantages of the present invention will be appreciated from review of the following detailed description of the invention, along with the accompanying figures in which like reference numerals refer to like parts throughout.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a side view of an embodiment of a foldable bicycle in accordance with the present invention;
  • FIG. 2 is a side view of a second embodiment of the foldable bicycle in accordance with the present invention, namely a tandem foldable bicycle;
  • FIG. 3 is a detail view of the embodiment illustrated in FIG. 2, showing a second seat tube, in accordance with the present invention;
  • FIG. 4 is a side view of the embodiment illustrated in FIG. 1, illustrating the foldable bicycle in accordance with the present invention in a folded configuration;
  • FIG. 5 is a detail view of the embodiment illustrated in FIG. 2, showing the foldable handlebar assembly, in accordance with the present invention;
  • FIG. 6 is a detail view of the embodiment illustrated in FIG. 5, showing the foldable handlebar assembly in a folded configuration, in accordance with the present invention;
  • FIG. 7 is a detail view of the embodiment illustrated in FIG. 2, showing the foldable front fork assembly in a partially-folded configuration, in accordance with the present invention;
  • FIG. 8 is a detail view of the embodiment illustrated in FIG. 7, showing the front fork assembly in a completely folded configuration, in accordance with the present invention;
  • FIG. 9 is a detail view of the embodiment illustrated in FIG. 2, showing the foldable rear wheel assembly, in accordance with the present invention;
  • FIG. 10 is a detail view of the embodiment illustrated in FIG. 9, showing the rear wheel assembly in a partially-folded configuration, in accordance with the present invention.
  • FIG. 11 is a detail view of a sprocket arrangement of the foldable bicycle in accordance with the present invention;
  • FIG. 12 is a cross-sectional detail view of a sprocket arrangement of the foldable bicycle in accordance with the present invention as shown in FIG. 11;
  • FIG. 13 is a side view of an embodiment of a foldable bicycle in accordance with the present invention;
  • FIG. 14 is a side view of the embodiment illustrated in FIG. 13, illustrating the foldable bicycle in accordance with the present invention in a partially folded configuration;
  • FIG. 15 is a side view of an embodiment of a foldable bicycle in accordance with the present invention;
  • FIG. 16 is a side view of an embodiment of a foldable bicycle in accordance with the present invention;
  • FIG. 17 is a side view of a motorized embodiment of a foldable bicycle, in accordance with the present invention;
  • FIG. 18 is a side view of a tandem foldable bicycle in accordance with the present invention;
  • FIG. 19 is a perspective view of a pedal in accordance with the present invention; and
  • FIG. 20 is a perspective view of a pedal in accordance with the present invention.
  • It will be recognized that some or all of the Figures are schematic representations for purposes of illustration and do not necessarily depict the actual relative sizes or locations of the elements shown.
  • DETAILED DESCRIPTION OF THE INVENTION
  • In the following paragraphs, the present invention will be described in detail by way of example with reference to the attached drawings. Throughout this description, the preferred embodiment and examples shown should be considered as exemplars, rather than as limitations on the present invention. As used herein, the “present invention” refers to any one of the embodiments of the invention described herein, and any equivalents. Furthermore, reference to various feature(s) of the “present invention” throughout this document does not mean that all claimed embodiments or methods must include the referenced feature(s).
  • The present invention relates to a foldable bicycle including a frame geometry providing various components in the same relation to one another both in the folded and unfolded conditions. As defined herein “frame geometry” refers to the arrangement of tubes that make up the bicycle frame. The relationship between the tubes comprising the bicycle frame creates a specific overall “frame geometry.” One feature of the foldable bicycle of the present invention is that the frame core preferably is of a unitary construction, i.e. containing no joints connecting moving parts.
  • Referring to FIGS. 1, 13 and 15, one embodiment of a foldable bicycle 10 of the present invention is illustrated. This embodiment of the present invention comprises a core frame assembly 12 including a single down tube 20 or preferably including spatially separated down tubes 165, 170, a seat tube 25, a top tube 15 and a bearing tube 30, wherein the down tube 20, seat tube 25, top tube 15 and bearing tube 30 are in substantially fixed relation to each other. The downtubes 165, 170 preferably have a gap between them, which is approximately the same width as the front wheel 175, or slightly wider. The downtubes 165, 170 can be parallel to one another, angled, or curved. Alternatively, a single downtube having a curve is provided, or a single tube, split in the middle is provided, also shaped to accommodate the front wheel when it is folded upwards.
  • A second embodiment of the present invention is illustrated in FIGS. 2 and 18. In this embodiment, a tandem foldable bicycle 70 is provided. This embodiment includes various features found in the single seat embodiment 10, including the core frame assembly of a down tube 20 or spatially separated downtubes 165, 170, a seat tube 25, a top tube 15 and a bearing tube 30, wherein the down tubes 165, 170, seat tube 25, top tube 15 and bearing tube 30 are substantially fixed relative to each other. Referring to FIGS. 2, 3 and 18, the tandem foldable bicycle 70 includes a second seat tube 45 with a second seat 40 and a second seat tube fastener 50. Preferably, the second seat tube fastener 50 is a quick-release fastener, but other types of fasteners may be employed, such as latches, locks, and suitable nut-and-bolt arrangements.
  • Optionally, a single seat bicycle can be converted to a tandem folding bicycle, by positioning the second seat tube 45 between the two upper seat stay tubes 75, 80 that comprise the upper seat stay 85. Attached to the upper seat stay 85 is the second seat tube fastener receiver 55, which is sized to receive the second seat tube fastener 50. The bottom end of the second seat tube 45 is positioned against the second seat tube support 60, located between the two forward bottom bracket tubes (i.e. chain stays) 90, 95, shown in FIG. 3. In this fashion, the foldable bicycle 10 can be converted into a tandem foldable bicycle 70 without changing the frame dimensions, or the bicycle wheelbase.
  • Referring now to FIG. 18, the tandem foldable bicycle 70 optionally may include a second pedal assembly 107 that is coupled with middle sprocket assembly 110. As depicted in FIGS. 11 and 18, preferably the second pedal assembly 107 is aligned in the same angular position as the first pedal assembly 100. Alternatively, a pair of footrests (not shown) may be mounted anywhere on the frame where appropriate, safe and convenient, such as on the two forward bracket tubes (i.e. chain stays) 90, 95.
  • In a further embodiment of the tandem bicycle, the second seat 40 is positioned so that a passenger in the seat 40 can face backwards. Optional footrests may be provided to allow a comfortable resting place for the rear-facing passenger's seat. Likewise the seat 40, whether front or rear facing may include amenities such as a backrest enhancing passenger comfort.
  • Referring to FIGS. 4 and 14, the foldable bicycle 10 of the present invention is illustrated in a folded configuration. Various optional folding features are illustrated in the figures. In the illustrated embodiment in FIGS. 1, 4, 13 and 15, the optional folding elements include foldable front-fork assembly 115, a foldable rear-wheel assembly 120 and a foldable handlebar assembly 125. In addition, the seat 35 optionally can be retracted into the seat tube 25 by releasing seat lock 123 enabling the seat mounting tube 124 to be slid into the seat tube 25. So, preferably, the seat mounting tube 124 has a smaller diameter than that of seat tube 25, enabling the seat mounting tube 124 to move within seat tube 25.
  • As shown in FIGS. 5 and 6, the foldable handlebar assembly 125 comprises a mounting member 135, also called a gooseneck, that is rotatably coupled with the bearing tube 30 (also called a head tube). The handlebars 140 are mounted to the mounting member 135 about handlebar pivot axes 130. Preferably the handlebars 140 can be rotated from an upright position as illustrated in FIGS. 1, 2 and 5 for example, to a folded downwards position as illustrated in FIGS. 3, 4 and 6. Any mechanism can be used that enables the handlebars 140 to be upright in a riding position and sufficiently fixed so as to allow safe steering, and then releasable and rotated downwards in a folded configuration of the bicycle 10, 70. In one embodiment, there is a friction fit between the handlebar tube 144 and the mounting member 135, which is suitably shaped to receive the handlebar tube 144. In another embodiment, a latching mechanism is provided, and in another a ratchet mechanism is provided. The handlebar elements 140, can include tubing, and at their respective ends, handles 142.
  • In one embodiment, the respective handlebar elements 140 can be folded inwards as well, in order to further decrease the folded size of the bicycle. In this embodiment, handlebar pivot axes 130 are provided at the intersection of the handlebars 140 and the mounting member 135. One embodiment handlebar latch 145, that releases the handlebar elements 140, is a hook-and-loop type, but other type of latches may be employed, such as a quick-release latch, or any other type of suitable latch or fastener.
  • Referring now to FIGS. 6, 7 and 8, a preferred method of folding the handlebar assembly 125 will now be described. Preferably, the entire handlebar assembly 125 (along with the front wheel 175) is rotated around approximately 18° degrees so that the entire assembly is in a backwards orientation. In order to achieve this rotation, the mounting member 135 is rotated as desired within the bearing tube 30. This rotating force is transmitted to the front wheel 175 via its associated mounting elements. After this initial rotation, then the handlebar latch 145 is released allowing each handlebar tube 140, along with its associated elements, to be rotated about their own handlebar pivot axes 130. In one embodiment of the present invention, one handlebar pivot axis 130 is angled at 45 degrees and the other handlebar pivot axis 130 is angled at 35 degrees so that the handles 142 mounted at the ends of the handlebar tubes 140 do not contact each other when in the folded position underneath the top tube 15, as shown in FIGS. 6 and 8.
  • Referring again to FIGS. 7 and 8, the front fork assembly 115 is illustrated. In a riding configuration as illustrated in FIG. 1, the front fork assembly 115 mounts the front wheel 175 via an axle to the frame 12. It should be recognized that any arrangement of elements of the front fork assembly 115 can be used that rotatably mounts the front wheel 175, and optionally allows the front wheel to be moved towards the frame 12 in a folding operation. In the illustrated embodiment, the front fork assembly 115 is pivotally attached to the bearing tube 30 of the frame 12. It includes a front fork 150 that extends forward when the foldable bicycle 10 is arranged in a riding configuration, as shown in FIG. 1. Pivotally attached to the front fork 150, about fork pivot axis 157 is a swing arm 155 that has a front wheel 175 removeably and rotatably coupled thereto. Fixedly attached to the swing arm 155 is a stirrup 160 that includes a stirrup latch 180. Both the swing arm 155 and the stirrup 160 are positioned about the front wheel 175.
  • In a preferred embodiment the stirrup latch 180 is a spring lock, but other types of latches and fasteners, such as hook-and-loop, or quick-release fasteners may be employed. The front fork assembly 115 is folded by rotating the front fork 150 approximately 180 degrees to a rear-facing orientation. The stirrup latch 180 is then released, freeing the stirrup 160, and allowing the rider to rotate the swing arm 155 and stirrup 160 about the fork pivot axis 157, as shown in FIGS. 7 and 8.
  • Examples of folded configurations are illustrated in FIGS. 4 and 8. In a folded configuration, the front wheel 175 is moved towards the frame. Preferably it is positioned between the two down tube elements 165, 170 comprising the down tube 20.
  • An alternative embodiment front fork assembly 115 may include two springs or shock absorbers 14, as shown in FIGS. 15, 16, and 17, that are mounted between the front fork 150 and either the stirrup 160 and/or the swing arm 155. The two springs or shock absorbers 14 would secure the stirrup latch 180 in the closed position when the foldable bicycle 10 is configured in the riding mode. The springs or shock absorbers 14 may be of any type, such as an elastomer type, hydraulic or pneumatic. It will be appreciated that one, or more springs or shock absorbers 14 may be mounted anywhere within the front fork assembly 115, in any suitable location.
  • One feature of the foldable front fork assembly 115 is that the “head angle” of the bearing tube can be configured similar to the head angle of a non-folding bicycle. The head angle determines the front fork rake angle, which affects steering “quickness.” That is, the steering of the present invention will feel normal to a rider accustomed to a non-folding bicycle, in contrast to conventional folding bicycles, that have a steeper head angle, which results in a steep front fork rake angle. This can be implemented to create relatively quick steering, resulting in a nervous, or edgy steering feel as desired.
  • An optional rear wheel assembly 120 also is provided. Any assembly may be used that is suitable for mounting the rear wheel rotatably with respect to the frame 12, and for mounting as desired one or more seat assemblies. In the illustrated embodiment, the seat stay is divided into an upper seat stay 85, and a lower seat stay 185. The upper seat stay 85 may optionally have two upper seat stay tubes 75, 80, shown in FIG. 3. The lower seat stay 185 optionally includes two lower seat stay tubes 190, 195, as shown in FIGS. 3, 9 and 10. Attached to the lower seat stay 185 is a seat stay fastener receiver 215, which is sized to receive the seat stay fastener 210. In this way the lower seat stay 185 is releaseably coupled to the upper seat stay 85. Preferably, the seat stay fastener 210 is a quick-release type, but other suitable fasteners, or latches may be employed. Also, the arrangement of fastener to receiver may be switched.
  • As shown in FIGS. 3, 9 and 10, one feature of the present invention is that the bottom bracket is divided into a forward bottom bracket comprising two forward bottom bracket tubes 90, 95 and a rear bottom bracket comprising two rear bottom bracket tubes 200, 205. The tubes are pivotally connected by pivot 220. Rotatably coupled about the pivot 220 is a middle sprocket assembly 110. The middle sprocket assembly 110 is connected to the front sprocket 105 by a front chain 225 which runs from front sprocket 105 to a first middle sprocket 112 on the middle sprocket assembly 110 (as depicted in FIGS. 11 and 12). The rear chain 230 connects a second middle sprocket 114 to the rear hub 235 that can contain one or more sprockets 237 providing differing gear ratios.
  • In a preferred tandem bicycle embodiment, the diameter of the first sprocket 105 is the same as that of the first middle sprocket 112 and the diameter of the second middle sprocket 114 is greater than that of one or more of the sprockets 237 on the rear hub 235, although any sprocket size can be used that allows the pedal force generated at any of the pedal assemblies 100, 107 to the rear wheel 240.
  • In one embodiment of the present invention, the rear hub 235 may contain internal gears, or the rear hub 235 may include external gears and a derailleur to move the chain between the gears. In addition, the front sprocket 105 may include additional sprockets beyond the two sprockets 112, 114 in the illustrations. In this way, a variety of gear ratios may be provided. One feature of the present invention is that the two sprocket assemblies 105, 110 provide a gear ratio that may be suitable for most bicycle speed requirements.
  • It should be noted that although chains 225 and 230 are discussed herein as providing mechanism for transmitting force between the respective sprockets 105, 110 and, or the hub mechanism 235 force can be transmitted via any mechanism that allows the forces to be appropriately transmitted from the rider's feet or hands to the appropriately driven wheel or wheels. For example, the force can be transmitted from pedals 100 or 107 via a drive shaft to rear wheel 240 or front wheel 175. Such a drive shaft system is widely known and used, for example in motorized vehicles to transmit propulsive force from an engine to one or more wheels. Alternatively, a power supply 65 may be included for providing a propulsive force. The power supply 65 may comprise an electric or internal combustion motor, that in a preferred embodiment would not increase the folded dimensions of the foldable bicycle 10, or the tandem foldable bicycle 70.
  • Again referring to FIGS. 3, 4, 9 and 10, the method of folding the rear wheel assembly 120 will now be described. When the seat stay fastener 210 is uncoupled from the seat stay fastener receiver 215, the rear wheel 240 is rotated about pivot 220, toward the seat 35. The front chain 225 remains positioned between the front sprocket 105 and the middle sprocket 110, while the rear chain 230 remains positioned between the middle sprocket 110 and the rear hub 235. The two rear bottom bracket tubes 200, 205 shift upward with the rear wheel 240. This arrangement of components keeps the distance between the front sprocket 105 and the middle sprocket 110 substantially constant during the folding process, avoiding any slack in the respective chains 225, 230. Therefore, it is not possible for the chains 225, 230 to come off during the folding and unfolding of the foldable bicycle 10. An alternative embodiment of the present invention may employ drivebelts, preferably geared drivebelts, instead of chains.
  • As shown in FIG. 4, when fully folded, the rear wheel 240 is positioned adjacent to the seat 35. A locking device may be used to keep the rear wheel 240 in the folded position. This greatly decreases the size of the foldable bicycle 10, allowing it to be carried in a large bag, backpack, and easily stowed in a small vehicle.
  • In addition, to reduce the width of the foldable bicycle 10, or the tandem foldable bicycle 70, the pedals may also be folded. Moreover, the foldable bicycle 10, or the tandem foldable bicycle 70 may be equipped with an electric or internal combustion motor without increasing the folded dimensions.
  • Any size wheel diameter can be used that allow the wheels to be appropriately folded using the frame assembly 12 provided. For example, both the front wheel 175 and the rear wheel 240 can be 14 inches or 16 inches in diameter, but other wheel sizes may be employed, such as for example 23 inches in diameter or other sizes. In addition, the foldable bicycle 10 and the tandem foldable bicycle 70 may be equipped with brakes, lights, fenders, a kick stand, and other amenities. Moreover, the frame may be sized to fit a child, or an oversized adult, or the top tube 15 may be positioned closer to the down tube(s) 20, such as traditionally has been provided on female gender-specific bicycles, as shown in FIG. 16.
  • Referring now to FIGS. 19-20, a foldable pedal assembly 11 is illustrated. Attached to pedal cranks 16 is a pedal mount 51. A narrow pedal member 52 is coupled to the pedal mount 51. It will be appreciated that either the narrow pedal member 52, or the pedal mount 51 may rotate about the pedal cranks 16. An outer footrest 57 is pivotally coupled about pedal pivot axis 58, and when in the folded position, as shown in FIG. 20, substantially decreases the width of the foldable pedal assembly 11. When in the unfolded position, as shown in FIG. 19, the outer footrest 57, in conjunction with the narrow pedal member 52, provides a substantial area for receiving an operator's foot.
  • Thus, it is seen that a foldable bicycle is provided. One skilled in the art will appreciate that the present invention can be practiced by other than the above-described embodiments, which are presented in this description for purposes of illustration and not of limitation. The description and examples set forth in this specification and associated drawings only set forth embodiment(s) of the present invention. The specification and drawings are not intended to limit the exclusionary scope of this patent document. Many designs other than the above-described embodiments will fall within the literal and/or legal scope of the following claims, and the present invention is limited only by the claims that follow. It is noted that various equivalents for the particular embodiments discussed in this description may practice the invention as well.

Claims (20)

1. A folding bicycle that is foldable between a riding configuration and a folded configuration, comprising:
a frame including a head tube coupled to a first end of a downtube, and a seat tube coupled to a second end of the downtube;
a folding rear wheel assembly including a seat stay, a chain stay and a rear wheel, wherein a first end of the seat stay is releasably coupled to the frame, a first end of the chain stay is rotatably coupled to the frame, the rear wheel is rotatably coupled to a second end of the chain stay, and the second end of the seat stay is fixedly coupled to the second end of the chain stay; and
a folding front wheel assembly including a front fork, a swing arm and a front wheel, wherein a first end of the fork is rotatably coupled to the head tube, a second end of the fork is pivotally coupled to the swing arm, and the front wheel is rotatably coupled to the swing arm;
wherein when the folding bicycle is in the folded configuration the first end of the seat stay is uncoupled from the frame and rotated relative to the frame such that the rear wheel is disposed adjacent and rearward of the seat tube.
2. The folding bicycle of claim 1, wherein when the folding bicycle is in the riding configuration the fork extends in a forward direction.
3. The folding bicycle of claim 1, wherein the seat stay comprises an upper seat stay and a lower seat stay, wherein the upper seat stay is fixedly coupled to the frame and the lower seat stay is releasably coupled to the upper seat stay when the folding bicycle is in the riding configuration and the lower seat stay is uncoupled from the upper seat stay when the folding bicycle is in the folded configuration.
4. The folding bicycle of claim 1, wherein the chain stay comprises a forward chain stay and a rearward chain stay, wherein the forward chain stay is fixedly coupled to the frame and the rearward chain stay is rotatably coupled to the forward chain stay, and wherein the forward chain stay and rearward chain stay are generally collinear when the folding bicycle is in the riding configuration.
5. The folding bicycle of claim 1, wherein when the folding bicycle is in the folded configuration, the front wheel is disposed in a location that is rearward and upward from the location of the front wheel when the bicycle is in the riding configuration.
6. The folding bicycle of claim 1, further comprising:
a seat coupled to a first end of the seat tube;
a bottom bracket coupled to the second end of the seat tube; and
a pedal assembly rotatably coupled to the bottom bracket along a first axis of rotation;
wherein the rear wheel is rotatably coupled to the chain stay along a second axis of rotation, and
wherein when the folding bicycle is in the folded configuration the distance between the second axis of rotation and the first end of the seat tube is less than the distance between the first axis of rotation and the first end of the seat tube.
7. The folding bicycle of claim 1, further comprising a folding handlebar assembly comprising a mounting member rotatably coupled to the head tube, and a plurality of handlebars pivotally mounted to the mounting member.
8. The folding bicycle of claim 7, wherein when the folding bicycle is in the folded configuration, at least a portion of each of the handlebars is disposed laterally adjacent the frame.
9. The folding bicycle of claim 7, further comprising a latching mechanism that releasably fixes the plurality of handlebars in an upright orientation when the folding bicycle is in the riding configuration.
10. A folding bicycle that is foldable between a riding configuration and a folded configuration, comprising:
a central frame assembly including a head tube coupled to a first end of a downtube, a seat tube coupled to a second end of the downtube, and a top tube extending between the head tube and the seat tube, wherein the central frame assembly defines a central frame area;
a folding rear wheel assembly including a seat stay, a chain stay and a rear wheel, wherein a first end of the seat stay is releasably coupled to the frame assembly, a first end of the chain stay is rotatably coupled to the frame assembly, and the rear wheel is rotatably coupled to a second end of the chain stay; and
a folding front wheel assembly including a front fork, a swing arm and a front wheel, wherein a first end of the fork is rotatably coupled to the head tube, a second end of the fork is pivotally coupled to the swing arm, and the front wheel is rotatably coupled to the swing arm;
wherein when the folding bicycle is in the riding configuration the fork extends in a forward direction, and
wherein when the folding bicycle is in the folded configuration the first end of the seat stay is uncoupled from the frame assembly and rotated relative to the frame assembly such that the rear wheel is disposed adjacent and rearward of the seat tube, and a portion of the front wheel is disposed laterally adjacent the central frame area.
11. The folding bicycle of claim 10, wherein the seat stay comprises an upper seat stay and a lower seat stay, wherein the upper seat stay is fixedly coupled to the frame assembly and the lower seat stay is releasably coupled to the upper seat stay when the folding bicycle is in the riding configuration and the lower seat stay is uncoupled from the upper seat stay when the folding bicycle is in the folded configuration.
12. The folding bicycle of claim 10, wherein the chain stay comprises a forward chain stay and a rearward chain stay, wherein the forward chain stay is fixedly coupled to the frame assembly and the rearward chain stay is rotatably coupled to the forward chain stay, and wherein the forward chain stay and rearward chain stay are generally collinear when the folding bicycle is in the riding configuration.
13. The folding bicycle of claim 10, wherein the front wheel is disposed rearward and upward from the riding position when the bicycle is in the folded configuration.
14. The folding bicycle of claim 10, further comprising:
a seat coupled to a first end of the seat tube;
a bottom bracket coupled to the second end of the seat tube; and
a pedal assembly rotatably coupled to the bottom bracket along a first axis of rotation;
wherein the rear wheel is rotatably coupled to the chain stay along a second axis of rotation, and
wherein when the folding bicycle is in the folded configuration the distance between the second axis of rotation and the first end of the seat tube is less than the distance between the first axis of rotation and the first end of the seat tube.
15. The folding bicycle of claim 10, further comprising a folding handlebar assembly comprising a mounting member rotatably coupled to the head tube, and a plurality of handlebars pivotally mounted to the mounting member.
16. The folding bicycle of claim 15, wherein when the folding bicycle is in the folded configuration, at least a portion of each of the handlebars is disposed laterally adjacent the frame assembly.
17. The folding bicycle of claim 16, wherein when the folding bicycle is in the folded configuration, at least a portion of each of the handlebars is disposed within the central frame area.
18. The folding bicycle of claim 15, further comprising a latching mechanism that releasably fixes the plurality of handlebars in an upright position when the folding bicycle is in the riding configuration.
19. A folding bicycle that is foldable between a riding configuration and a folded configuration, comprising:
a central frame assembly including a head tube coupled to a first end of a downtube, a seat tube coupled to a second end of the downtube, and a top tube extending between the head tube and the seat tube, wherein the frame assembly defines a central frame area;
a folding rear wheel assembly including a seat stay, a chain stay and a rear wheel, wherein a first end of the seat stay is releasably coupled to the frame assembly, a first end of the chain stay is rotatably coupled to the frame assembly, and the rear wheel is rotatably coupled to a second end of the chain stay; and
a folding handlebar assembly comprising a mounting member rotatably coupled to the head tube, and a plurality of handlebars pivotally mounted to the mounting member;
wherein when the folding bicycle is in the folded configuration the first end of the seat stay is uncoupled from the frame assembly and rotated relative to the frame assembly such that the rear wheel is disposed adjacent and rearward of the seat tube, and at least a portion of each of the handlebars is disposed within the central frame area.
20. The folding bicycle of claim 19, further comprising a folding front wheel assembly.
US11/804,756 2002-04-15 2007-05-18 Folding bicycle Abandoned US20070222175A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
SI200200101 2002-04-15
SI200200101 2002-04-15
SI200200308 2002-12-18
SI200200308A SI21365A (en) 2002-12-18 2002-12-18 Folding bicycle
PCT/IB2003/001243 WO2003086848A1 (en) 2002-04-15 2003-03-03 Folding bicycle
US10/461,017 US7229089B2 (en) 2002-04-15 2003-06-12 Folding bicycle
US11/804,756 US20070222175A1 (en) 2002-04-15 2007-05-18 Folding bicycle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/804,756 US20070222175A1 (en) 2002-04-15 2007-05-18 Folding bicycle

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US10/461,017 Division US7229089B2 (en) 2002-04-15 2003-06-12 Folding bicycle

Publications (1)

Publication Number Publication Date
US20070222175A1 true US20070222175A1 (en) 2007-09-27

Family

ID=29253799

Family Applications (3)

Application Number Title Priority Date Filing Date
US10/511,676 Abandoned US20060006624A1 (en) 2002-04-15 2003-03-03 Folding bicycle
US10/461,017 Expired - Fee Related US7229089B2 (en) 2002-04-15 2003-06-12 Folding bicycle
US11/804,756 Abandoned US20070222175A1 (en) 2002-04-15 2007-05-18 Folding bicycle

Family Applications Before (2)

Application Number Title Priority Date Filing Date
US10/511,676 Abandoned US20060006624A1 (en) 2002-04-15 2003-03-03 Folding bicycle
US10/461,017 Expired - Fee Related US7229089B2 (en) 2002-04-15 2003-06-12 Folding bicycle

Country Status (18)

Country Link
US (3) US20060006624A1 (en)
EP (2) EP1975053A3 (en)
JP (1) JP3890330B2 (en)
KR (1) KR100646019B1 (en)
CN (1) CN100354176C (en)
AT (1) AT402061T (en)
AU (1) AU2003212612A1 (en)
DE (1) DE60322364D1 (en)
DK (1) DK1494916T3 (en)
EA (2) EA007519B1 (en)
ES (1) ES2309301T3 (en)
HK (1) HK1069364A1 (en)
HR (2) HRP20050758A2 (en)
PT (1) PT1494916E (en)
RS (2) RS51095B (en)
SI (1) SI1494916T1 (en)
TW (1) TWI284099B (en)
WO (1) WO2003086848A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080169624A1 (en) * 2007-01-12 2008-07-17 David Tak-Wei Hon Folding bicycle
US20110187078A1 (en) * 2010-02-02 2011-08-04 Mark Antony Higgon Rear suspension unit for after market use in folding bikes
GB2550447A (en) * 2016-05-18 2017-11-22 Alan Jackson John An improved foldable bicycle

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2509674C (en) * 2002-12-18 2010-11-23 Studio Moderna Sa Folding bicycle
WO2005032925A2 (en) * 2003-09-29 2005-04-14 Ascher Steven G Bicycle having elliptical pedaling path
US7290956B2 (en) * 2004-10-01 2007-11-06 Studio Moderna Sa Releasable securing apparatus and method of using same
US7232144B2 (en) * 2005-06-07 2007-06-19 Eduardo Colman Folding bicycle
US7228761B1 (en) * 2005-10-12 2007-06-12 Chung-I Chen Foldable pedal assembly
US7288048B2 (en) * 2006-03-10 2007-10-30 Vp Components Co., Ltd. Folding pedal
US7651109B2 (en) * 2006-06-15 2010-01-26 Dynacraft Bsc Llc Folding mechanism and land vehicle comprising same
US20090230641A1 (en) * 2008-03-14 2009-09-17 Robert Roldan Eugenio Snow ski-bike
US20100295264A1 (en) * 2009-05-19 2010-11-25 Vince Denais Airless, Chainless Bicycle
US8123243B2 (en) * 2009-12-18 2012-02-28 Ho William M Foldable bicycle
IT1403030B1 (en) * 2010-11-19 2013-09-27 Falzari Bicycle frame.
ES2398025B1 (en) * 2011-04-27 2014-01-17 Rafael MARÍN GARRIDO Longitudinal folding system for bicycles.
DE102011050447B4 (en) 2011-05-18 2013-02-07 Karsten Bettin Gear unit with one or two gears, optional for bicycles or for trailer bicycles
HU1100396A2 (en) 2011-07-22 2013-01-28 Gabor Gerencser Foldable bicycle
US8348294B1 (en) 2011-09-09 2013-01-08 MDM Productivity, LLC Drive-and-chassis mechanisms used in the design of compact, carry-on vehicles
US8876128B2 (en) 2011-09-09 2014-11-04 MDM Productivity, Inc. Carry-on bicycle contained by a single channel in a chassis
US8480113B2 (en) 2011-09-09 2013-07-09 MDM Productivity, Inc. Compact, carry-on bicycles having a shared drive-and-steering space
US8714576B2 (en) 2011-09-09 2014-05-06 MDM Productivity, Inc. Drive-and-steering mechanisms used in the design of compact, carry-on vehicles
US8789840B2 (en) * 2012-09-19 2014-07-29 Richard Priest Folding bicycle and method of use
US8794654B1 (en) * 2013-03-29 2014-08-05 Wang-Chuan Chen Folding balance bike
US10150529B2 (en) * 2014-06-06 2018-12-11 Bignay, Inc. Vertically folding bicycle with locking mechanism
KR101698962B1 (en) * 2014-12-11 2017-01-23 김권 Double interlocking speed change bicycle capable of controlling positon of pedal and saddle
DE102015200994A1 (en) * 2015-01-22 2016-07-28 Ford Global Technologies, Llc Folding
HU230674B1 (en) * 2015-04-09 2017-08-28 Ferenc Molnar Bicycle foldable around several axes
US20190168836A1 (en) * 2017-12-04 2019-06-06 Shuo-Feng Wang Bicycle Folding Mechanism

Citations (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US551848A (en) * 1895-12-24 Bicycle
US599859A (en) * 1898-03-01 Tandem attachment for bicycles
US625612A (en) * 1899-05-23 Convertible bicycle
US645145A (en) * 1898-07-28 1900-03-13 E C Stearns & Co Folding bicycle.
US2280936A (en) * 1940-08-06 1942-04-28 David A Swanson Convertible tandem bicycle
US2414275A (en) * 1944-07-03 1947-01-14 Frank W Schwinn Folding handle bar for bicycles
US3505901A (en) * 1968-06-21 1970-04-14 Frank G Stone Apparatus for custom handlebar selection
US3680879A (en) * 1970-07-30 1972-08-01 Joseph A Cogliano Collapsible bicycle
US3710883A (en) * 1971-10-22 1973-01-16 P Rizzo Folding motorcycle or the like
US4002351A (en) * 1972-03-17 1977-01-11 Zuck Daniel R Folding bicycle
US4029326A (en) * 1976-01-21 1977-06-14 Blow Jr James H Bicycle construction
US4067589A (en) * 1976-05-21 1978-01-10 Hon David T Foldable bicycle
US4417745A (en) * 1981-03-16 1983-11-29 Shomo Robert D Folding bicycle
US4433852A (en) * 1981-02-12 1984-02-28 Hon Corporation Foldable and portable vehicle
US4438942A (en) * 1981-02-12 1984-03-27 Hon Corporation Foldable and portable vehicle
US4441729A (en) * 1982-05-17 1984-04-10 Borg-Warner Corporation Folding bicycle
US4448435A (en) * 1981-02-12 1984-05-15 Hon Corporation International Foldable and portable vehicle
US4460191A (en) * 1982-05-14 1984-07-17 Bridgestone Cycle Co., Ltd. Foldable bicycle frame
US4491337A (en) * 1972-03-17 1985-01-01 Zuck Daniel R Folding bicycle
DE3434459A1 (en) * 1984-09-20 1986-03-27 Kalkhoff Werke Gmbh Folding bicycle
US4598923A (en) * 1982-03-16 1986-07-08 Licencia Talalmanyokat Ertekesito Vallalat Bicycle portable as a bag
US4718688A (en) * 1985-02-27 1988-01-12 Sanders Mark A Collapsible bicycles with triangular frames
US4824131A (en) * 1988-02-09 1989-04-25 Thay Ching H Collapsible folding bicycle assembly
US4936597A (en) * 1989-04-21 1990-06-26 Hartmann Dirck T Fully enclosed multiple speed drive for a chain driven tandem bicycle
US4995626A (en) * 1989-01-13 1991-02-26 Montague Harry D Foldable tandem bicycle
US5125678A (en) * 1987-01-22 1992-06-30 Ulrich Bogen Folding bicycle
US5135246A (en) * 1989-01-13 1992-08-04 Harry Montague Foldable tandem bicycle
US5873590A (en) * 1996-02-19 1999-02-23 Exedy Corporation Bicycle
US6139038A (en) * 1998-08-07 2000-10-31 Santa Cruz; Cathy D. Weldless bicycle frame
JP2001039375A (en) * 1999-07-09 2001-02-13 Daocheng Liao Folding bicycle
US6279935B1 (en) * 1998-06-15 2001-08-28 Bayerische Motoren Werke Aktiengesellschaft Collapsible bicycle
US6347803B1 (en) * 2000-04-06 2002-02-19 Oscar L. Berges Bicycle with two chain driven differentials
US6394478B1 (en) * 2000-10-02 2002-05-28 Jose P. Balajadia Bicycle frame
US20030057672A1 (en) * 2001-09-24 2003-03-27 Baker Orlando C. Tandem bicycle adapter
US6641159B1 (en) * 2002-10-29 2003-11-04 Jeeng-Neng Fan Compound drive foldable bicycle

Family Cites Families (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE628783A (en)
US679086A (en) * 1900-11-26 1901-07-23 Louis Leonard Luce Bicycle handle-bar.
US2280932A (en) * 1939-01-26 1942-04-28 Westinghouse Electric & Mfg Co Automatic mooring winch
GB526773A (en) * 1939-03-31 1940-09-25 Andre Jules Marcelin Improvements in or relating to velocipedes
FR1011990A (en) * 1949-05-11 1952-07-02 folding Bicyclette
JPS4923395A (en) 1972-06-30 1974-03-01
JPS578014Y2 (en) * 1974-10-03 1982-02-16
JPS5622182A (en) 1979-07-31 1981-03-02 Toshiba Corp Printer
EP0026800B1 (en) 1979-10-03 1984-05-30 Brompton Bicycle Limited Folding bicycle
DE3234183A1 (en) * 1982-09-15 1984-03-15 Kettler Heinz Gmbh Multi-seated, in particular two-seated bicycle
GB2144687B (en) 1983-08-10 1987-06-24 Michael David Strutt Improvements in bicycle frames and bicycles
EP0163988A3 (en) * 1984-05-25 1987-05-06 PAIOLI S.p.A. Bicycle frame having a modifiable structure
US4773175A (en) * 1984-07-16 1988-09-27 Larsen Clifford A Display board for a shopping cart
CA1191879A (en) * 1984-12-21 1985-08-13 Antoine Trubiano Shopping cart having solid flat vertical container basket walls
SU1320117A1 (en) * 1985-03-12 1987-06-30 К. А. Рыльков Collapsible single-track vehicle
US4632411A (en) * 1985-05-01 1986-12-30 United Steel & Wire Company Shopping cart with plastic basket
DE3517034C1 (en) * 1985-05-11 1987-01-15 Reinhold Reiling Device for grinding the cutting edges of drills
US4765077A (en) * 1985-05-22 1988-08-23 Victor Parker Directory support frame
JPH0636559B2 (en) 1985-07-29 1994-05-11 株式会社日立製作所 Sync signal generator
US5210968A (en) * 1988-05-04 1993-05-18 Rehrig International, Inc. Advertising panel for shopping carts
US4922639A (en) * 1988-05-04 1990-05-08 Rehrig International, Inc. Cart with advertising panels
CN2040481U (en) * 1988-07-13 1989-07-05 胡念国 Foldable bicycle
CH677215A5 (en) 1989-01-21 1991-04-30 Alfred Beck Snow chain with rigid retainer fitted behind wheel - has two separate chains, to cover wheel section against ground during assembly, pulled into place by spring when wheel moves
US5363575A (en) * 1989-05-08 1994-11-15 T.V. Fanfare Display card holder
FR2664228B1 (en) 1990-07-03 1995-05-12 Raymond Sgandura
US5255930A (en) * 1992-03-10 1993-10-26 Unr Industries, Inc. Shopping cart having plastic basket
US5312125A (en) 1992-03-11 1994-05-17 Shu Tsao Collapsable compact bicycle
US5306033A (en) * 1992-09-25 1994-04-26 Evans Harold A Shopping cart bumper
DE4313832A1 (en) * 1993-04-28 1994-11-03 Markus Riese Foldable bicycle frame
GB2289874A (en) 1994-01-28 1995-12-06 Malcolm Graham Parry Folding bicycle
JPH08133160A (en) 1994-11-04 1996-05-28 Kamenosuke Wada Folding bicycle
GB2296224B (en) 1994-12-20 1999-01-20 Malcolm Graham Parry Folding dismantleable bicyle
JPH08198167A (en) 1995-01-24 1996-08-06 Akira Sakamoto Folding structure of bicycle frame
US5915704A (en) * 1995-12-29 1999-06-29 Policad Industrial, S.L. Supermarket shopping carts
JP3039352B2 (en) 1996-02-05 2000-05-08 松下電器産業株式会社 bicycle
JPH10119866A (en) 1996-10-21 1998-05-12 Kikuo Kondou Folding type handle for bicycle
JPH10152085A (en) 1996-11-21 1998-06-09 Bitsugu Trading:Kk Foldable bicycle
USD400679S (en) * 1997-05-05 1998-11-03 Rehrig International, Inc Combined molded plastic shopping cart basket and rear panel
JPH115582A (en) 1997-06-16 1999-01-12 Kanto Auto Works Ltd Folding bicycle provided with interrupting mechanism of drive force
IT1298533B1 (en) * 1998-02-02 2000-01-12 Alessandro Belli Two-wheeled vehicle with folding frame by means of command and return of the drive
AUPP477698A0 (en) 1998-07-21 1998-08-13 Ep Manufacturing Bhd Improvements in bicycle construction
DE19932282A1 (en) 1999-07-10 2001-01-11 Bayerische Motoren Werke Ag Folding two-wheeler, especially a bicycle
JP3663994B2 (en) 1999-09-10 2005-06-22 松下電器産業株式会社 bicycle
SK284821B6 (en) * 1999-11-26 2005-12-01 Pavel P. Mikšík Universal folding bicycle
DE10032105C2 (en) 2000-07-01 2003-06-05 Bayerische Motoren Werke Ag Foldable bike
GB2373770A (en) 2001-03-30 2002-10-02 Atb Sales Ltd Folding bicycle
CN2473112Y (en) * 2001-04-05 2002-01-23 温宜玲 Telescopic and folding bicycle
GB2377207A (en) 2001-07-04 2003-01-08 Far Great Plastics Ind Co Ltd Folding structure for a bicycle
FR2827829A1 (en) 2001-07-24 2003-01-31 Edmond Jacques Gandrillon Folding bicycle has main frame of two parallel tubes with articulated front forks, handlebars and saddle pillar
DE20114505U1 (en) 2001-09-03 2002-01-24 Poreski Thomas Foldable bike
CA2402992A1 (en) 2002-09-12 2004-03-12 Philip Brook Folding bicycle
DE20300031U1 (en) 2003-01-03 2003-03-13 Fan Jeeng Neng Folding bicycle has a chain set on whose middle is a chain (A) with a chain guard and locking and folding mechanism dividing the bicycle into three

Patent Citations (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US551848A (en) * 1895-12-24 Bicycle
US599859A (en) * 1898-03-01 Tandem attachment for bicycles
US625612A (en) * 1899-05-23 Convertible bicycle
US645145A (en) * 1898-07-28 1900-03-13 E C Stearns & Co Folding bicycle.
US2280936A (en) * 1940-08-06 1942-04-28 David A Swanson Convertible tandem bicycle
US2414275A (en) * 1944-07-03 1947-01-14 Frank W Schwinn Folding handle bar for bicycles
US3505901A (en) * 1968-06-21 1970-04-14 Frank G Stone Apparatus for custom handlebar selection
US3680879A (en) * 1970-07-30 1972-08-01 Joseph A Cogliano Collapsible bicycle
US3710883A (en) * 1971-10-22 1973-01-16 P Rizzo Folding motorcycle or the like
US4002351A (en) * 1972-03-17 1977-01-11 Zuck Daniel R Folding bicycle
US4491337A (en) * 1972-03-17 1985-01-01 Zuck Daniel R Folding bicycle
US4029326A (en) * 1976-01-21 1977-06-14 Blow Jr James H Bicycle construction
US4067589A (en) * 1976-05-21 1978-01-10 Hon David T Foldable bicycle
US4433852A (en) * 1981-02-12 1984-02-28 Hon Corporation Foldable and portable vehicle
US4438942A (en) * 1981-02-12 1984-03-27 Hon Corporation Foldable and portable vehicle
US4448435A (en) * 1981-02-12 1984-05-15 Hon Corporation International Foldable and portable vehicle
US4417745A (en) * 1981-03-16 1983-11-29 Shomo Robert D Folding bicycle
US4598923A (en) * 1982-03-16 1986-07-08 Licencia Talalmanyokat Ertekesito Vallalat Bicycle portable as a bag
US4460191A (en) * 1982-05-14 1984-07-17 Bridgestone Cycle Co., Ltd. Foldable bicycle frame
US4441729A (en) * 1982-05-17 1984-04-10 Borg-Warner Corporation Folding bicycle
DE3434459A1 (en) * 1984-09-20 1986-03-27 Kalkhoff Werke Gmbh Folding bicycle
US4718688A (en) * 1985-02-27 1988-01-12 Sanders Mark A Collapsible bicycles with triangular frames
US5125678A (en) * 1987-01-22 1992-06-30 Ulrich Bogen Folding bicycle
US4824131A (en) * 1988-02-09 1989-04-25 Thay Ching H Collapsible folding bicycle assembly
US4995626A (en) * 1989-01-13 1991-02-26 Montague Harry D Foldable tandem bicycle
US5135246A (en) * 1989-01-13 1992-08-04 Harry Montague Foldable tandem bicycle
US4936597A (en) * 1989-04-21 1990-06-26 Hartmann Dirck T Fully enclosed multiple speed drive for a chain driven tandem bicycle
US5873590A (en) * 1996-02-19 1999-02-23 Exedy Corporation Bicycle
US6279935B1 (en) * 1998-06-15 2001-08-28 Bayerische Motoren Werke Aktiengesellschaft Collapsible bicycle
US6139038A (en) * 1998-08-07 2000-10-31 Santa Cruz; Cathy D. Weldless bicycle frame
JP2001039375A (en) * 1999-07-09 2001-02-13 Daocheng Liao Folding bicycle
US6347803B1 (en) * 2000-04-06 2002-02-19 Oscar L. Berges Bicycle with two chain driven differentials
US6394478B1 (en) * 2000-10-02 2002-05-28 Jose P. Balajadia Bicycle frame
US20030057672A1 (en) * 2001-09-24 2003-03-27 Baker Orlando C. Tandem bicycle adapter
US6612597B2 (en) * 2001-09-24 2003-09-02 Orlando C. Baker Tandem bicycle adapter
US6641159B1 (en) * 2002-10-29 2003-11-04 Jeeng-Neng Fan Compound drive foldable bicycle

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080169624A1 (en) * 2007-01-12 2008-07-17 David Tak-Wei Hon Folding bicycle
US7614632B2 (en) * 2007-01-12 2009-11-10 David Tak-Wei Hon Folding bicycle
US20110187078A1 (en) * 2010-02-02 2011-08-04 Mark Antony Higgon Rear suspension unit for after market use in folding bikes
GB2550447A (en) * 2016-05-18 2017-11-22 Alan Jackson John An improved foldable bicycle
GB2550447B (en) * 2016-05-18 2019-01-09 Alan Jackson John An improved foldable bicycle

Also Published As

Publication number Publication date
RS20050920A (en) 2008-09-29
US20040056452A1 (en) 2004-03-25
JP3890330B2 (en) 2007-03-07
HRP20100554C1 (en) 2015-11-06
DK1494916T3 (en) 2008-11-03
US20060006624A1 (en) 2006-01-12
EP1975053A2 (en) 2008-10-01
YU90804A (en) 2006-03-03
EA007519B1 (en) 2006-10-27
HRP20050758A2 (en) 2007-01-31
EP1975053A3 (en) 2010-08-04
WO2003086848A1 (en) 2003-10-23
TW200410861A (en) 2004-07-01
CN100354176C (en) 2007-12-12
EP1494916B1 (en) 2008-07-23
KR20050000513A (en) 2005-01-05
KR100646019B1 (en) 2006-11-14
HRPK20100554B3 (en) 2012-03-31
AT402061T (en) 2008-08-15
RS51766B (en) 2011-12-31
PT1494916E (en) 2008-10-07
CN1652966A (en) 2005-08-10
AU2003212612A1 (en) 2003-10-27
ES2309301T3 (en) 2008-12-16
DE60322364D1 (en) 2008-09-04
EA008789B1 (en) 2007-08-31
EA200601053A1 (en) 2007-02-27
US7229089B2 (en) 2007-06-12
HK1069364A1 (en) 2005-05-20
HRP20100554A2 (en) 2010-12-31
JP2005522376A (en) 2005-07-28
EP1494916A1 (en) 2005-01-12
RS51095B (en) 2010-10-31
SI1494916T1 (en) 2008-12-31
TWI284099B (en) 2007-07-21
EA200401370A1 (en) 2005-02-24

Similar Documents

Publication Publication Date Title
US6367824B1 (en) Tricycle
US8128111B2 (en) Scooter and pedal drive assembly
KR101691269B1 (en) Compact, Foldable Bicycle
CA2628222C (en) Folding recumbent vehicle
KR101667268B1 (en) Cycle
US4582335A (en) Bicycle frame having a modifiable structure
US10202163B2 (en) Collapsible electric vehicle
US8801009B2 (en) Folding wheel mechanism for vehicle
US6273442B1 (en) Folding two wheeled vehicle
US5511809A (en) Pedal-powered four-wheel vehicle
US7367576B2 (en) Foldable bicycle
US7114737B1 (en) Recumbent vehicle
US6742797B2 (en) Transformable tricycle and variations
US8894084B1 (en) Compact folding bicycle
DK167385B1 (en) Foldable bike with triangle frame
US8746722B2 (en) Method of travel using a folding vehicle having a chassis that functions as a protective, carry-on casing
US4497502A (en) Recumbent tricycle
US8256784B2 (en) Tricycle with front and rear steering
US5145196A (en) Collapsible tricycle
EP1625068B1 (en) Folding bicycle
EP1635756B1 (en) Mobility assistance vehicle
CA1232626A (en) Tricycle and drive therefor
US10029755B2 (en) Cycle and associated components
AU2001238273B2 (en) Miniaturized motor vehicle
AU2010224327B2 (en) Self-propelled vehicle propelled by an elliptical drive train including foot link guide track

Legal Events

Date Code Title Description
AS Assignment

Owner name: STUDIO MODERNA SA, SWITZERLAND

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MIHELIC, MIKO;REEL/FRAME:019386/0774

Effective date: 20031124

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION