CA2420059C - Side by side bicycle - Google Patents
Side by side bicycle Download PDFInfo
- Publication number
- CA2420059C CA2420059C CA002420059A CA2420059A CA2420059C CA 2420059 C CA2420059 C CA 2420059C CA 002420059 A CA002420059 A CA 002420059A CA 2420059 A CA2420059 A CA 2420059A CA 2420059 C CA2420059 C CA 2420059C
- Authority
- CA
- Canada
- Prior art keywords
- frame
- coupling
- drive
- steering
- central
- 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.)
- Expired - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K3/00—Bicycles
- B62K3/12—Tandems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K17/00—Cycles not otherwise provided for
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Steering Devices For Bicycles And Motorcycles (AREA)
Abstract
A side by side bicycle has a central frame, a first side frame and a second side frame. The central frame supports a front wheel, a rear wheel and a central coupling adapter. The first side frame and the second side frame both support seats, pedals, handle bars, and a first coupling adapter and a second coupling adapter, respectively. An elongate support connects the central coupling adapter, the first coupling adapter, and the second coupling adapter. The positioning of the first side frame and the second side frame along the elongate support relative to the central frame is selectively adjustable to balance respective weight of riders positioned on the first seat and the second seat, without altering the respective steering and pedalling positions.
Description
TITLE OF THE INVENTION:
Side By Side Bicycle FIELD OF THE INVENTION
The present invention relates to a bicycle in which two riders ride in side by side relation.
BACKGROUND OF THE INVENTION
Side by side bicycles have a long history. Early l0 examples of side by side bicycles include U.S. 543,070 (Weaver et al 1895), U.S. 563,958 (Grilli 1896), U.S. 583,553 (Sholl 1897) and U.S. 615,231 (Williams 1898). The more sophisticated designs of side by side bicycle include a steering linkage to co-ordinate steering and a drive linkage to co-ordinate pedalling. The existence of these features has, of necessity, made side by side bicycles somewhat complex. This complexity creates problems when one attempts to make adjustments to accommodate riders of differing weight.
SL7~lARY OF THE INVENTION
What is required is a side by side bicycle where the differential weights of the riders can be more readily accommodated.
According to the present invention there is provided a side by side bicycle which has a central frame, a first side frame and a second side frame. The central frame has a front and a rear. A front wheel is rotatably mounted at the front of the central frame. A rear wheel is rotatably mounted at the rear of the central frame. A central coupling adapter is positioned toward the rear of the central frame and forward of the rear wheel. The first side frame has a front and a rear. The first side frame supports a first seat. A first set of pedals are mounted on a first crank rotatably supported at the front of first side frame. A first set of handle bars is mounted to the first side frame. A first coupling adapter is positioned at the rear of the first side frame. The second side frame has a front and a rear. The second side frame supports a second seat. A second set of pedals are mounted on a second crank rotatably supported by at the front of the second side frame. A second set of handle bars are mounted to the second side frame. A second coupling adapter is positioned at the rear of the second frame. An elongate support connects the central coupling adapter of the central frame, the first coupling adapter of the first side frame, and the second coupling adapter of the second side frame. The positioning of the first side frame and the second side frame along the elongate support relative to the central frame is selectively adjustable to balance respective weight of riders positioned on the first seat and the second seat, without altering the respective steering and pedalling positions.
With previous side by side bicycles, the means used to adjust for riders of differing weights usually involved shifting of the seats. When this was done, the alignment between the seats, the handle bars and the pedals changed.
With the present invention riders of dramatically different weights can ride the bicycle, simply by sliding the first coupling adapter of first side frame or the second coupling adapter of the second side frame along the elongate support until the riders are balanced.
Although beneficial results may be obtained through the use of the side by side bicycle, as described above, even more beneficial results may be obtained when each of the central coupling adapter, the first coupling adapter and the second coupling adapter include a steering coupling. A slave steering linkage with two control arms extends from the front wheel rearwardly to the steering coupling of the central frame. A first steering linkage is provided with two control arms extending from the first set of handle bars rearwardly to the steering coupling of the first side frame, such that movement of the first set of handle bars acts upon the control arms to cause rotational movement of the steering coupling. A second steering linkage is provided with two control arms extending from the second set of handle bars rearwardly to the steering coupling of the second side frame, such that movement of the second set of handle bars acts upon the control arms to cause rotational movement of the steering coupling. A steering shaft extends to the steering coupling of each of the central frame, the first side frame and the second side frame. Rotational movement of the steering coupling of either of the first side frame or the second side frame serves to rotate the steering coupling of the central module, thereby creating a master to slave relationship between movements of either the first set of handle bars or the second set of handle bars and the slave steering linkage.
Although beneficial results may be obtained through the use of the side by side bicycle, as described above, even more beneficial results may be obtained when each of the central coupling adapter, the first coupling adapter and the second coupling adapter include a drive coupling. A slave drive linkage with an endless chain extends from a drive sprocket on the drive coupling of the central frame to a driven sprocket on the rear wheel. A first drive linkage is provided, with a drive sprocket on the first crank with an endless chain extending from the drive sprocket rearwardly to a driven sprocket on the drive coupling of the first side frame. A rotary force imparted to the first crank is transmitted via the drive sprocket and endless chain to the driven sprocket to rotate the drive coupling of the first side frame. A second drive linkage is provided including a drive sprocket on the second crank with an endless chain extending from the drive sprocket rearwardly to a driven sprocket on the drive coupling of the second side frame. A
rotary force imparted to the second crank is transmitted via the drive sprocket and endless chain to the driven sprocket to rotate the drive coupling of the second side frame. A
drive shaft extends to the drive couplings of each of the central frame, the first side frame and the second side frame, such that rotational movement of the drive coupling of either of the first side frame or the second side frame serves to rotate the drive coupling of the central frame, thereby imparting a rotational force to the slave drive linkage of the central module.
Although beneficial results may be obtained through the use of the side by side bicycle, as described above, even more beneficial results may be obtained when the side by side bicycle is made modular with a central module, a first side module and a second side module. Each module has an adapter with a support coupling, a steering coupling and a drive coupling. These three modules are rapidly assembled and disassembled by disengaging the elongate support, the steering shaft and the drive shaft from, respectively, the support coupling, the steering coupling and drive coupling of each module. Riders merely made relative adjustments of the modules and then ride off. All of the drives and controls remained " hooked up" as the coupling adapters are slid along the elongate support, and do not need any further attention at all. The bicycle can be readily made to conform to weight differentials of various riders without being taken apart or having major modifications. The movement of the first side module and the second side module in no way alters handle bar or pedal positioning. This is in marked contrast to the prior art in which the seats would be moved, but not the pedals or handle bars.
Side By Side Bicycle FIELD OF THE INVENTION
The present invention relates to a bicycle in which two riders ride in side by side relation.
BACKGROUND OF THE INVENTION
Side by side bicycles have a long history. Early l0 examples of side by side bicycles include U.S. 543,070 (Weaver et al 1895), U.S. 563,958 (Grilli 1896), U.S. 583,553 (Sholl 1897) and U.S. 615,231 (Williams 1898). The more sophisticated designs of side by side bicycle include a steering linkage to co-ordinate steering and a drive linkage to co-ordinate pedalling. The existence of these features has, of necessity, made side by side bicycles somewhat complex. This complexity creates problems when one attempts to make adjustments to accommodate riders of differing weight.
SL7~lARY OF THE INVENTION
What is required is a side by side bicycle where the differential weights of the riders can be more readily accommodated.
According to the present invention there is provided a side by side bicycle which has a central frame, a first side frame and a second side frame. The central frame has a front and a rear. A front wheel is rotatably mounted at the front of the central frame. A rear wheel is rotatably mounted at the rear of the central frame. A central coupling adapter is positioned toward the rear of the central frame and forward of the rear wheel. The first side frame has a front and a rear. The first side frame supports a first seat. A first set of pedals are mounted on a first crank rotatably supported at the front of first side frame. A first set of handle bars is mounted to the first side frame. A first coupling adapter is positioned at the rear of the first side frame. The second side frame has a front and a rear. The second side frame supports a second seat. A second set of pedals are mounted on a second crank rotatably supported by at the front of the second side frame. A second set of handle bars are mounted to the second side frame. A second coupling adapter is positioned at the rear of the second frame. An elongate support connects the central coupling adapter of the central frame, the first coupling adapter of the first side frame, and the second coupling adapter of the second side frame. The positioning of the first side frame and the second side frame along the elongate support relative to the central frame is selectively adjustable to balance respective weight of riders positioned on the first seat and the second seat, without altering the respective steering and pedalling positions.
With previous side by side bicycles, the means used to adjust for riders of differing weights usually involved shifting of the seats. When this was done, the alignment between the seats, the handle bars and the pedals changed.
With the present invention riders of dramatically different weights can ride the bicycle, simply by sliding the first coupling adapter of first side frame or the second coupling adapter of the second side frame along the elongate support until the riders are balanced.
Although beneficial results may be obtained through the use of the side by side bicycle, as described above, even more beneficial results may be obtained when each of the central coupling adapter, the first coupling adapter and the second coupling adapter include a steering coupling. A slave steering linkage with two control arms extends from the front wheel rearwardly to the steering coupling of the central frame. A first steering linkage is provided with two control arms extending from the first set of handle bars rearwardly to the steering coupling of the first side frame, such that movement of the first set of handle bars acts upon the control arms to cause rotational movement of the steering coupling. A second steering linkage is provided with two control arms extending from the second set of handle bars rearwardly to the steering coupling of the second side frame, such that movement of the second set of handle bars acts upon the control arms to cause rotational movement of the steering coupling. A steering shaft extends to the steering coupling of each of the central frame, the first side frame and the second side frame. Rotational movement of the steering coupling of either of the first side frame or the second side frame serves to rotate the steering coupling of the central module, thereby creating a master to slave relationship between movements of either the first set of handle bars or the second set of handle bars and the slave steering linkage.
Although beneficial results may be obtained through the use of the side by side bicycle, as described above, even more beneficial results may be obtained when each of the central coupling adapter, the first coupling adapter and the second coupling adapter include a drive coupling. A slave drive linkage with an endless chain extends from a drive sprocket on the drive coupling of the central frame to a driven sprocket on the rear wheel. A first drive linkage is provided, with a drive sprocket on the first crank with an endless chain extending from the drive sprocket rearwardly to a driven sprocket on the drive coupling of the first side frame. A rotary force imparted to the first crank is transmitted via the drive sprocket and endless chain to the driven sprocket to rotate the drive coupling of the first side frame. A second drive linkage is provided including a drive sprocket on the second crank with an endless chain extending from the drive sprocket rearwardly to a driven sprocket on the drive coupling of the second side frame. A
rotary force imparted to the second crank is transmitted via the drive sprocket and endless chain to the driven sprocket to rotate the drive coupling of the second side frame. A
drive shaft extends to the drive couplings of each of the central frame, the first side frame and the second side frame, such that rotational movement of the drive coupling of either of the first side frame or the second side frame serves to rotate the drive coupling of the central frame, thereby imparting a rotational force to the slave drive linkage of the central module.
Although beneficial results may be obtained through the use of the side by side bicycle, as described above, even more beneficial results may be obtained when the side by side bicycle is made modular with a central module, a first side module and a second side module. Each module has an adapter with a support coupling, a steering coupling and a drive coupling. These three modules are rapidly assembled and disassembled by disengaging the elongate support, the steering shaft and the drive shaft from, respectively, the support coupling, the steering coupling and drive coupling of each module. Riders merely made relative adjustments of the modules and then ride off. All of the drives and controls remained " hooked up" as the coupling adapters are slid along the elongate support, and do not need any further attention at all. The bicycle can be readily made to conform to weight differentials of various riders without being taken apart or having major modifications. The movement of the first side module and the second side module in no way alters handle bar or pedal positioning. This is in marked contrast to the prior art in which the seats would be moved, but not the pedals or handle bars.
BRIEF DESCRIPTION OF THE DRAWINGS
These and other features of the invention will become more apparent from the following description in which reference is made to the appended drawings, the drawings are for the purpose of illustration only and are not intended to in any way limit the scope of the invention to the particular embodiment or embodiments shown, wherein:
FIGURE 1 is a top plan view of a side by side bicycle constructed in accordance with the teachings of the present invention.
FIGURE 2 is a perspective view of the steering linkage and steering coupling sleeves for the side by side bicycle illustrated in FIGURE 1~
FIGURE 3 is a side elevation view, in section, of the side by side bicycle illustrated in FIGURE 1~
FIGURE 4 is a rear elevation view of the central coupling adapter, the first coupling adapter and the second coupling adapter of the side by side bicycle illustrated in FIGURE 1~
FIGURE 5 is an exploded rear elevation view of the central coupling adapter, the first coupling adapter and the second coupling adapter of the side by side bicycle illustrated in FIGURE 4~
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
The preferred embodiment, a side by side bicycle generally identified by reference numeral 10, will now be described with reference to gIG~S 1 through 5.
Structure and Relationship of Parts:
Referring to FIGURE 1. side by side bicycle 10 has a central module 12 having a central frame 14 with a centre front 16 and a centre rear 18. A front wheel 20 is rotatably mounted at centre front 16 and a rear wheel 22 is rotatably mounted at centre rear 18: A central coupling adapter 24 is positioned toward the rear of central frame 14 and forward of rear wheel 22. Referring to gIG~ 4, central coupling adapter 24 has a centre support coupling sleeve 26, a centre steering coupling sleeve 28 with centre steering sleeve brackets 30 and a centre drive shaft bracket 32. Referring to FIGS 1, central module 12 is further adapted with a slave steering linkage 34 which includes two centre steering horns 36 attached to a front wheel fork 38 and connected to two centre control arms 40. Referring to FIGURE 2. centre control arms 40 extend from centre steering horns 36 rearwardly to centre sleeve brackets 30 such that rotation of centre steering coupling sleeve 28, acts upon centre control arms 40 to cause movement of front wheel fork 36. Referring to FIGURE 3, central module 12 is further adapted with a slave drive linkage 42. Slave drive linkage 42 has a centre endless chain 44 which extends from a slave drive sprocket 46 at centre drive shaft bracket 32 as illustrated in FIGS 4~
to a centre driven sprocket 48 at rear wheel 22 as illustrated in FIGURE 3. Rotation of slave drive sprocket 46 provides a motive force via centre endless chain 44 to centre driven sprocket 48 and rear wheel 22. Referring to FIGURE 1.
modular side by side bicycle 10 has a first side module 50 and a second side module 90. First side module 50 has a first frame 52 with a first front 54 and a first rear 56.
First frame 52 supports a first seat 58 (shown in dotted lines. A first set of pedals 60 mounted on a first crank 62, are rotatably supported at first front 54 of first frame 52.
A first coupling adapter 64 is positioned at first rear 56 of first frame 52. Referring to FIGURE 4. first coupling adapter 64 has a first support coupling sleeve 66, a first steering coupling sleeve 68 with first steering sleeve brackets 70 and a first drive shaft bracket 72. Referring to FIGURE 1. a first set of handle bars 74 are mounted to first frame 52. First side module 50 is further adapted with a first steering linkage 76 which includes two first steering horns 78 attached to first set of handle bars 74 and connected to two first control arms 80. Referring to FIGURE
2, first control arms 80 extend from first steering horns 78 rearwardly to first steering sleeve brackets 70 such that movement of first set of handle bars 74 acts upon first control arms 80 to cause rotational movement of first steering coupling sleeve 68. Referring to FIGURE 3. first side module 50 is further adapted with a first drive linkage 82. First drive linkage 82 has a first endless chain 84 which extends from a first drive sprocket 86 attached to first crank 62, to a first driven sprocket 88 at first rear 56. Rotary force imparted to first crank 62 is transmitted via first drive sprocket 86 and first endless chain 84 to first driven sprocket 88.
Referring to FIGURE 1. second side module 90 has a second frame 92 with a second front 94 and a second rear 96.
Second frame 92 supports a second seat 98 (shown in dotted lines). A second set of pedals 100 mounted on a second crank 102 are rotatably supported at second front 94 of second frame 92. A second coupling adapter 104 is positioned at second rear 96 of second frame 92. Referring to FIGURE 4~
second coupling adapter 104 has a second support coupling sleeve 106, a second steering coupling sleeve 108 with second steering sleeve brackets 110 and a second drive shaft bracket 112. Referring to FIGURE l~ a second set of handle bars 114 are mounted to second frame 92. Second side module 90 is further adapted with a second steering linkage 116 which includes two second steering horns 118 attached to second set of handle bars 114 and connected to two second control arms 120. Referring to FIGS 2, second control arms 120 extend from second steering horns 118 rearwardly to second steering sleeve brackets 110 such that movement of second set of handle bars 114 acts upon second control arms 120 to cause rotational movement of second steering coupling sleeve 108.
Referring to FIGS 1, second side module 90 is further adapted with a second drive linkage 122. Second drive linkage 122 has a second endless chain 124 which extends from a second drive sprocket 126 attached to second crank 102, to a second driven sprocket cluster 128 at second rear 96. A
rotary force imparted to second crank 102 is transmitted via second drive sprocket 126 and second endless chain 124 to second driven sprocket cluster 128. Referring to FIGURES 4 and 5, an elongate support 130 extends through centre support coupling sleeve 26, first support coupling sleeve 66 and second support coupling sleeve 106 such that central module 12, first side module 50 and second side module 90 are connected as illustrated in FIGS 1. Referring to FIGURE 5~
in order to compensate for riders of unequal weight and to balance modular side by side bicycle 10, the relative positioning of central module 12, first side module 50 and second side module 90 is adjustable by choosing the appropriate one of selectively adjustable locking holes 132 located along elongate support 130. Referring to FIGURES 4 and 5, a steering shaft 134 extends through centre steering coupling sleeve 28, first steering coupling sleeve 68 and second steering coupling sleeve 108. Rotational movement of either first steering coupling sleeve 68 or second steering coupling sleeve 108 serves to rotate centre steering coupling sleeve 28 thereby creating a master to slave relationship between movements of either first set of handle bars 74 or second set of handle bars 114 and slave steering linkage 34 as illustrated in FIGURE 1. Referring to FIGURES 4 and 5, a drive shaft 136 extends through centre drive shaft bracket 32, first drive shaft bracket 72 and second drive shaft bracket 112. Referring to FIGURE 5. drive shaft 136 is adapted with interlocking splines 138 allowing it to engage either first driven sprocket 88 or second driven sprocket 128 and transmit rotational force to slave drive sprocket 46 and rear wheel 22. Referring to FIGURE 4, each of centre drive shaft bracket 32 first drive shaft bracket 72 and second drive shaft bracket 112 is adapted with bearings 140.
Referring to FIGURE 3~ in, order to accommodate different sizes of rider, each of first frame 52 of first side module 50 (and second frame 92 of second side module 90) are also adapted with selectively adjustable locking holes 132 for seat adjustment.
Operation:
The use and operation of side by side bicycle 10 will now be described with reference to FIGURES 1 through 5.
Referring to F=GA 1, each of the three primary components of modular side by side bicycle 10: central module 12, first side module 50 and second side module 90, may be transported in disengaged form as illustrated in FIGURE 5, and assembled on site as illustrated in F=GA ~. Once the three components are aligned along elongate support 130 and configured as illustrated in FIGURE l, means for locking each component in place may be used. Typical means are standard bolts or pins. Drive shaft 136 is installed within bearings 140 of centre drive shaft bracket 32, first drive shaft bracket 72 and second drive shaft bracket 112 as illustrated in g=G~ 4. Steering shaft 134 is similarly installed in 1~
centre steering coupling sleeve 28, first steering coupling sleeve 68 and second steering coupling sleeve 108 as illustrated in FIGURE 2- Referring to FIGURE 4. depending on the weight of the riders, central module 12 may be adjusted by selecting the appropriate selectively adjustable locking hole 132. Referring to FIGURE 3. depending upon the size of the riders, first seat 58 (and second seat 98) may also be adjusted by selecting the appropriate selectively adjustable locking hole 132. Referring to FIGS 4, each rider has independently adjustable gears at either first driven sprocket 88 or second driven sprocket 128 allowing for different levels of effort. Pedal force from both riders is combined at slave drive linkage 42 and transmitted to rear wheel 22 as illustrated in FIGURE 3~ Referring to FIGURE 1~
each rider can provide steering input from either first set of handle bars 74 or second set of handle bars 114. Force at both of first steering linkage 76 and second steering linkage 116 are synchronised at slave steering linkage 34 and transmitted to front wheel fork 38 as illustrated in g=G~
2, Advantages:
The above described construction facilitates ease of transport. It also enables the bicycle to be easily taken apart and put back together.
The above described construction enables adjustments to be made to accommodate riders of different weight, without changing the relative alignment of the seat to the pedals.
All functions are placed in and remain in the ideal position for each rider.
The above described construction enables either rider to pedal at whatever speed he or she wishes, independent of the other.
With the above described construction both riders are equal participants in directional awareness and control because both handlebars turn together with the front wheel.
In this patent document, the word "comprising" is used in its non-limiting sense to mean that items following the word are included, but items not specifically mentioned are not excluded. A reference to an element by the indefinite article "a" does not exclude the possibility that more than one of the element is present, unless the context clearly requires that there be one and only one, of the elements.
It will be apparent to one skilled in the art that modifications may be made to the illustrated embodiment without departing from the spirit and scope of the invention as hereinafter defined in the Claims.
These and other features of the invention will become more apparent from the following description in which reference is made to the appended drawings, the drawings are for the purpose of illustration only and are not intended to in any way limit the scope of the invention to the particular embodiment or embodiments shown, wherein:
FIGURE 1 is a top plan view of a side by side bicycle constructed in accordance with the teachings of the present invention.
FIGURE 2 is a perspective view of the steering linkage and steering coupling sleeves for the side by side bicycle illustrated in FIGURE 1~
FIGURE 3 is a side elevation view, in section, of the side by side bicycle illustrated in FIGURE 1~
FIGURE 4 is a rear elevation view of the central coupling adapter, the first coupling adapter and the second coupling adapter of the side by side bicycle illustrated in FIGURE 1~
FIGURE 5 is an exploded rear elevation view of the central coupling adapter, the first coupling adapter and the second coupling adapter of the side by side bicycle illustrated in FIGURE 4~
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
The preferred embodiment, a side by side bicycle generally identified by reference numeral 10, will now be described with reference to gIG~S 1 through 5.
Structure and Relationship of Parts:
Referring to FIGURE 1. side by side bicycle 10 has a central module 12 having a central frame 14 with a centre front 16 and a centre rear 18. A front wheel 20 is rotatably mounted at centre front 16 and a rear wheel 22 is rotatably mounted at centre rear 18: A central coupling adapter 24 is positioned toward the rear of central frame 14 and forward of rear wheel 22. Referring to gIG~ 4, central coupling adapter 24 has a centre support coupling sleeve 26, a centre steering coupling sleeve 28 with centre steering sleeve brackets 30 and a centre drive shaft bracket 32. Referring to FIGS 1, central module 12 is further adapted with a slave steering linkage 34 which includes two centre steering horns 36 attached to a front wheel fork 38 and connected to two centre control arms 40. Referring to FIGURE 2. centre control arms 40 extend from centre steering horns 36 rearwardly to centre sleeve brackets 30 such that rotation of centre steering coupling sleeve 28, acts upon centre control arms 40 to cause movement of front wheel fork 36. Referring to FIGURE 3, central module 12 is further adapted with a slave drive linkage 42. Slave drive linkage 42 has a centre endless chain 44 which extends from a slave drive sprocket 46 at centre drive shaft bracket 32 as illustrated in FIGS 4~
to a centre driven sprocket 48 at rear wheel 22 as illustrated in FIGURE 3. Rotation of slave drive sprocket 46 provides a motive force via centre endless chain 44 to centre driven sprocket 48 and rear wheel 22. Referring to FIGURE 1.
modular side by side bicycle 10 has a first side module 50 and a second side module 90. First side module 50 has a first frame 52 with a first front 54 and a first rear 56.
First frame 52 supports a first seat 58 (shown in dotted lines. A first set of pedals 60 mounted on a first crank 62, are rotatably supported at first front 54 of first frame 52.
A first coupling adapter 64 is positioned at first rear 56 of first frame 52. Referring to FIGURE 4. first coupling adapter 64 has a first support coupling sleeve 66, a first steering coupling sleeve 68 with first steering sleeve brackets 70 and a first drive shaft bracket 72. Referring to FIGURE 1. a first set of handle bars 74 are mounted to first frame 52. First side module 50 is further adapted with a first steering linkage 76 which includes two first steering horns 78 attached to first set of handle bars 74 and connected to two first control arms 80. Referring to FIGURE
2, first control arms 80 extend from first steering horns 78 rearwardly to first steering sleeve brackets 70 such that movement of first set of handle bars 74 acts upon first control arms 80 to cause rotational movement of first steering coupling sleeve 68. Referring to FIGURE 3. first side module 50 is further adapted with a first drive linkage 82. First drive linkage 82 has a first endless chain 84 which extends from a first drive sprocket 86 attached to first crank 62, to a first driven sprocket 88 at first rear 56. Rotary force imparted to first crank 62 is transmitted via first drive sprocket 86 and first endless chain 84 to first driven sprocket 88.
Referring to FIGURE 1. second side module 90 has a second frame 92 with a second front 94 and a second rear 96.
Second frame 92 supports a second seat 98 (shown in dotted lines). A second set of pedals 100 mounted on a second crank 102 are rotatably supported at second front 94 of second frame 92. A second coupling adapter 104 is positioned at second rear 96 of second frame 92. Referring to FIGURE 4~
second coupling adapter 104 has a second support coupling sleeve 106, a second steering coupling sleeve 108 with second steering sleeve brackets 110 and a second drive shaft bracket 112. Referring to FIGURE l~ a second set of handle bars 114 are mounted to second frame 92. Second side module 90 is further adapted with a second steering linkage 116 which includes two second steering horns 118 attached to second set of handle bars 114 and connected to two second control arms 120. Referring to FIGS 2, second control arms 120 extend from second steering horns 118 rearwardly to second steering sleeve brackets 110 such that movement of second set of handle bars 114 acts upon second control arms 120 to cause rotational movement of second steering coupling sleeve 108.
Referring to FIGS 1, second side module 90 is further adapted with a second drive linkage 122. Second drive linkage 122 has a second endless chain 124 which extends from a second drive sprocket 126 attached to second crank 102, to a second driven sprocket cluster 128 at second rear 96. A
rotary force imparted to second crank 102 is transmitted via second drive sprocket 126 and second endless chain 124 to second driven sprocket cluster 128. Referring to FIGURES 4 and 5, an elongate support 130 extends through centre support coupling sleeve 26, first support coupling sleeve 66 and second support coupling sleeve 106 such that central module 12, first side module 50 and second side module 90 are connected as illustrated in FIGS 1. Referring to FIGURE 5~
in order to compensate for riders of unequal weight and to balance modular side by side bicycle 10, the relative positioning of central module 12, first side module 50 and second side module 90 is adjustable by choosing the appropriate one of selectively adjustable locking holes 132 located along elongate support 130. Referring to FIGURES 4 and 5, a steering shaft 134 extends through centre steering coupling sleeve 28, first steering coupling sleeve 68 and second steering coupling sleeve 108. Rotational movement of either first steering coupling sleeve 68 or second steering coupling sleeve 108 serves to rotate centre steering coupling sleeve 28 thereby creating a master to slave relationship between movements of either first set of handle bars 74 or second set of handle bars 114 and slave steering linkage 34 as illustrated in FIGURE 1. Referring to FIGURES 4 and 5, a drive shaft 136 extends through centre drive shaft bracket 32, first drive shaft bracket 72 and second drive shaft bracket 112. Referring to FIGURE 5. drive shaft 136 is adapted with interlocking splines 138 allowing it to engage either first driven sprocket 88 or second driven sprocket 128 and transmit rotational force to slave drive sprocket 46 and rear wheel 22. Referring to FIGURE 4, each of centre drive shaft bracket 32 first drive shaft bracket 72 and second drive shaft bracket 112 is adapted with bearings 140.
Referring to FIGURE 3~ in, order to accommodate different sizes of rider, each of first frame 52 of first side module 50 (and second frame 92 of second side module 90) are also adapted with selectively adjustable locking holes 132 for seat adjustment.
Operation:
The use and operation of side by side bicycle 10 will now be described with reference to FIGURES 1 through 5.
Referring to F=GA 1, each of the three primary components of modular side by side bicycle 10: central module 12, first side module 50 and second side module 90, may be transported in disengaged form as illustrated in FIGURE 5, and assembled on site as illustrated in F=GA ~. Once the three components are aligned along elongate support 130 and configured as illustrated in FIGURE l, means for locking each component in place may be used. Typical means are standard bolts or pins. Drive shaft 136 is installed within bearings 140 of centre drive shaft bracket 32, first drive shaft bracket 72 and second drive shaft bracket 112 as illustrated in g=G~ 4. Steering shaft 134 is similarly installed in 1~
centre steering coupling sleeve 28, first steering coupling sleeve 68 and second steering coupling sleeve 108 as illustrated in FIGURE 2- Referring to FIGURE 4. depending on the weight of the riders, central module 12 may be adjusted by selecting the appropriate selectively adjustable locking hole 132. Referring to FIGURE 3. depending upon the size of the riders, first seat 58 (and second seat 98) may also be adjusted by selecting the appropriate selectively adjustable locking hole 132. Referring to FIGS 4, each rider has independently adjustable gears at either first driven sprocket 88 or second driven sprocket 128 allowing for different levels of effort. Pedal force from both riders is combined at slave drive linkage 42 and transmitted to rear wheel 22 as illustrated in FIGURE 3~ Referring to FIGURE 1~
each rider can provide steering input from either first set of handle bars 74 or second set of handle bars 114. Force at both of first steering linkage 76 and second steering linkage 116 are synchronised at slave steering linkage 34 and transmitted to front wheel fork 38 as illustrated in g=G~
2, Advantages:
The above described construction facilitates ease of transport. It also enables the bicycle to be easily taken apart and put back together.
The above described construction enables adjustments to be made to accommodate riders of different weight, without changing the relative alignment of the seat to the pedals.
All functions are placed in and remain in the ideal position for each rider.
The above described construction enables either rider to pedal at whatever speed he or she wishes, independent of the other.
With the above described construction both riders are equal participants in directional awareness and control because both handlebars turn together with the front wheel.
In this patent document, the word "comprising" is used in its non-limiting sense to mean that items following the word are included, but items not specifically mentioned are not excluded. A reference to an element by the indefinite article "a" does not exclude the possibility that more than one of the element is present, unless the context clearly requires that there be one and only one, of the elements.
It will be apparent to one skilled in the art that modifications may be made to the illustrated embodiment without departing from the spirit and scope of the invention as hereinafter defined in the Claims.
Claims (8)
1. A side by side bicycle, comprising:
a central frame having a front and a rear, a front wheel rotatably mounted at the front of the central frame, a rear wheel rotatably mounted at the rear of the central frame, a central coupling adapter positioned toward the rear of the central frame and forward of the rear wheel;
a first side frame having a front and a rear, the first side frame supporting a first seat, a first set of pedals mounted on a first crank being rotatably supported at the front of the first side frame, a first set of handle bars being mounted to the first side frame, and a first coupling adapter positioned at the rear of the first side frame;
a second side frame having a front and a rear, the second side frame supporting a second seat, a second set of pedals mounted on a second crank rotatably supported at the front of the second side frame, a second set of handle bars being mounted to the second side frame, and a second coupling adapter positioned at the rear of the second side frame; and an elongate support connecting the central coupling adapter of the central frame, the first coupling adapter of the first side frame, and the second coupling adapter of the second side frame, the positioning of the first side frame and the second side frame along the elongate support relative to the central frame being selectively adjustable to balance respective weight of riders positioned on the first seat and the second seat without altering their respective steering and pedalling positions.
a central frame having a front and a rear, a front wheel rotatably mounted at the front of the central frame, a rear wheel rotatably mounted at the rear of the central frame, a central coupling adapter positioned toward the rear of the central frame and forward of the rear wheel;
a first side frame having a front and a rear, the first side frame supporting a first seat, a first set of pedals mounted on a first crank being rotatably supported at the front of the first side frame, a first set of handle bars being mounted to the first side frame, and a first coupling adapter positioned at the rear of the first side frame;
a second side frame having a front and a rear, the second side frame supporting a second seat, a second set of pedals mounted on a second crank rotatably supported at the front of the second side frame, a second set of handle bars being mounted to the second side frame, and a second coupling adapter positioned at the rear of the second side frame; and an elongate support connecting the central coupling adapter of the central frame, the first coupling adapter of the first side frame, and the second coupling adapter of the second side frame, the positioning of the first side frame and the second side frame along the elongate support relative to the central frame being selectively adjustable to balance respective weight of riders positioned on the first seat and the second seat without altering their respective steering and pedalling positions.
2. The side by side bicycle as defined in Claim 1, wherein each of the central coupling adapter, the first coupling adapter and the second coupling adapter include a steering coupling, a slave steering linkage including two control arms extending from the front wheel rearwardly to the steering coupling of the central frame, a first steering linkage including two control arms extending from the first set of handle bars rearwardly to the steering coupling of the first side frame, such that movement of the first set of handle bars acts upon the control arms to cause rotational movement of the steering coupling, a second steering linkage including two control arms extending from the second set of handle bars rearwardly to the steering coupling of the second side frame, such that movement of the second set of handle bars acts upon the control arms to cause rotational movement of the steering coupling, a steering shaft extending to the steering coupling of each of the central frame, the first side frame and the second side frame, such that rotational movement of the steering coupling of either of the first side frame or the second side frame serves to rotate the steering coupling of the central module, thereby creating a master to slave relationship between movements of either the first set of handle bars or the second set of handle bars and the slave steering linkage.
3. The side by side bicycle as defined in Claim 1, wherein each of the central coupling adapter, the first coupling adapter and the second coupling adapter include a drive coupling, a slave drive linkage including an endless chain extending from a drive sprocket on the drive coupling of the central frame to a driven sprocket on the rear wheel; a first drive linkage including a drive sprocket on the first crank with an endless chain extending from the drive sprocket rearwardly to a driven sprocket on the drive coupling of the first side frame, such that a rotary force imparted to the first crank is transmitted via the drive sprocket and the endless chain to the driven sprocket to rotate the drive coupling of the first side frame, a second drive linkage including a drive sprocket on the second crank with an endless chain extending from the drive sprocket rearwardly to a driven sprocket on the drive coupling of the second side frame, such that a rotary force imparted to the second crank is transmitted via the drive sprocket and the endless chain to the driven sprocket to rotate the drive coupling of the second side frame, a drive shaft extending to the drive couplings of each of the central frame, the first side frame and the second side frame, such that rotational movement of the drive coupling of either of the first side frame or the second side frame serves to rotate the drive coupling of the central frame, thereby imparting a rotational force to the slave drive linkage of the central module.
4. The side by side bicycle as defined in Claim 2, wherein each of the central coupling adapter, the first coupling adapter and the second coupling adapter include a support coupling adapted to engage the elongate support.
5. The side by side bicycle as defined in Claim 1, wherein the first seat is selectively adjustable between a number of locking positions between the front and the rear of the first frame and the second seat is selectively adjustable between a number of locking positions between the front and the rear of the second frame.
6. A side by side bicycle, comprising:
a central module having a central frame with a front and a rear, a front wheel rotatably mounted at the front of the frame, a rear wheel rotatably mounted at the rear of the frame, a central coupling adapter positioned toward the rear of the frame and forward of the rear wheel, the coupling adapter having a support coupling, a steering coupling, and a drive coupling, a slave steering linkage including two control arms extending from the front wheel rearwardly to the steering coupling, a slave drive linkage including an endless chain extending from a drive sprocket on the drive coupling to a driven sprocket on the rear wheel;
a first side module having a first frame with a front and a rear, the frame supporting a first seat, a first set of pedals mounted on a first crank being rotatably supported at the front of first frame, a first coupling adapter being positioned at the rear of the first, the first coupling adapter having a support coupling, a steering coupling and a drive coupling, a first set of handle bars being mounted to the first frame, a first steering linkage including two control arms extending from the first set of handle bars rearwardly to the steering coupling, such that movement of the first set of handle bars acts upon the control arms to cause rotational movement of the steering coupling, a first drive linkage including a drive sprocket on the first crank with an endless chain extending from the drive sprocket rearwardly to a driven sprocket on the drive coupling, such that a rotary force imparted to the first crank is transmitted via the drive sprocket and the endless chain to the driven sprocket to rotate the drive coupling;
a second side module having a second frame with a front and a rear, the frame supporting a second seat, a second set of pedals mounted on a second crank rotatably supported by at the front of the second frame, a second coupling adapter positioned at the rear of the second frame, the second coupling adapter having a support coupling, a steering coupling and a drive coupling, a second set of handle bars being mounted to the second frame, a second steering linkage including two control arms extending from the second set of handle bars rearwardly to the steering coupling, such that movement of the second set of handle bars acts upon the control arms to cause rotational movement of the steering coupling, a second drive linkage including.a drive sprocket on the second crank with an endless chain extending from the drive sprocket rearwardly to a driven sprocket on the drive coupling, such that a rotary force imparted to the second crank is transmitted via the drive sprocket and the endless chain to the driven sprocket to rotate the drive coupling;
an elongate support connecting the support couplings of each of the central module, the first side module and the second side module to connect the modules together, the relative positioning of the central module, the first side module and the second side module along the elongate support being selectively adjustable to balance respective weight of riders positioned on the first seat and the second seat;
a steering shaft extending to the steering coupling of each of the central module, the first side module and the second side module, such that rotational movement of the steering coupling of either of the first side module or the second side module serves to rotate the steering coupling of the central module, thereby creating a master to slave relationship between movements of either the first set of handle bars or the second set of handle bars and the slave steering linkage; and a drive shaft extending to the drive couplings of each of the central module, the first side module and the second side module, such that rotational movement of the drive coupling of either of the first side module or the second side module serves to rotate the drive coupling of the central module, thereby imparting a rotational force to the slave drive linkage of the central module.
a central module having a central frame with a front and a rear, a front wheel rotatably mounted at the front of the frame, a rear wheel rotatably mounted at the rear of the frame, a central coupling adapter positioned toward the rear of the frame and forward of the rear wheel, the coupling adapter having a support coupling, a steering coupling, and a drive coupling, a slave steering linkage including two control arms extending from the front wheel rearwardly to the steering coupling, a slave drive linkage including an endless chain extending from a drive sprocket on the drive coupling to a driven sprocket on the rear wheel;
a first side module having a first frame with a front and a rear, the frame supporting a first seat, a first set of pedals mounted on a first crank being rotatably supported at the front of first frame, a first coupling adapter being positioned at the rear of the first, the first coupling adapter having a support coupling, a steering coupling and a drive coupling, a first set of handle bars being mounted to the first frame, a first steering linkage including two control arms extending from the first set of handle bars rearwardly to the steering coupling, such that movement of the first set of handle bars acts upon the control arms to cause rotational movement of the steering coupling, a first drive linkage including a drive sprocket on the first crank with an endless chain extending from the drive sprocket rearwardly to a driven sprocket on the drive coupling, such that a rotary force imparted to the first crank is transmitted via the drive sprocket and the endless chain to the driven sprocket to rotate the drive coupling;
a second side module having a second frame with a front and a rear, the frame supporting a second seat, a second set of pedals mounted on a second crank rotatably supported by at the front of the second frame, a second coupling adapter positioned at the rear of the second frame, the second coupling adapter having a support coupling, a steering coupling and a drive coupling, a second set of handle bars being mounted to the second frame, a second steering linkage including two control arms extending from the second set of handle bars rearwardly to the steering coupling, such that movement of the second set of handle bars acts upon the control arms to cause rotational movement of the steering coupling, a second drive linkage including.a drive sprocket on the second crank with an endless chain extending from the drive sprocket rearwardly to a driven sprocket on the drive coupling, such that a rotary force imparted to the second crank is transmitted via the drive sprocket and the endless chain to the driven sprocket to rotate the drive coupling;
an elongate support connecting the support couplings of each of the central module, the first side module and the second side module to connect the modules together, the relative positioning of the central module, the first side module and the second side module along the elongate support being selectively adjustable to balance respective weight of riders positioned on the first seat and the second seat;
a steering shaft extending to the steering coupling of each of the central module, the first side module and the second side module, such that rotational movement of the steering coupling of either of the first side module or the second side module serves to rotate the steering coupling of the central module, thereby creating a master to slave relationship between movements of either the first set of handle bars or the second set of handle bars and the slave steering linkage; and a drive shaft extending to the drive couplings of each of the central module, the first side module and the second side module, such that rotational movement of the drive coupling of either of the first side module or the second side module serves to rotate the drive coupling of the central module, thereby imparting a rotational force to the slave drive linkage of the central module.
7. A side by side bicycle, comprising:
a central module having a central frame with a front and a rear, a front wheel rotatably mounted at the front of the frame, a rear wheel rotatably mounted at the rear of the frame, a central coupling adapter positioned toward the rear of the frame and forward of the rear wheel, the coupling adapter having a support sleeve, a steering sleeve and a drive coupler, a slave steering linkage including two control arms extending from the front wheel rearwardly to the steering sleeve, such that rotation of the steering sleeve acts upon the control arms to cause movement of the slave steering linkage, a slave drive linkage including an endless chain extending from a drive sprocket on the drive sleeve to a driven sprocket on the rear wheel, such that rotation of the drivecoupler causes the drive sprocket to provide a motive force via the endless chain to the driven sprocket;
a first side module having a first frame with a front and a rear, the frame supporting a first seat, a first set of pedals mounted on a first crank being rotatably supported at the front of first frame, a first coupling adapter being positioned at the rear of the first, the first coupling adapter having a support sleeve, a steering sleeve and a drive coupler, a first set of handle bars being mounted to the first frame, a first steering linkage including two control arms extending from the first set of handle bars rearwardly to the steering sleeve, such that movement of the first set of handle bars acts upon the control arms to cause rotational movement of the steering sleeve, a first drive linkage including a drive sprocket on the first crank with an endless chain extending from the drive sprocket rearwardly to a driven sprocket on the drive coupler, such that a rotary force imparted to the first crank is transmitted via the drive sprocket and the endless chain to the driven sprocket to rotate the drive coupler;
a second side module having a second frame with a front and a rear, the frame supporting a second seat, a second set of pedals mounted on a second crank rotatably supported by at the front of the second frame, a second coupling adapter positioned at the rear of the second frame, the second coupling adapter having a support sleeve, a steering sleeve and a drive coupler, a second set of handle bars being mounted to the second frame, a second steering linkage including two control arms extending from the second set of handle bars rearwardly to the steering sleeve, such that movement of the second set of handle bars acts upon the control arms to cause rotational movement of the steering sleeve, a second drive linkage including a drive sprocket on the second crank with an endless chain extending from the drive sprocket rearwardly to a driven sprocket on the drive coupler, such that a rotary force imparted to the second crank is transmitted via the drive sprocket and the endless chain to the driven sprocket to rotate the drive coupler;
an elongate support extending through the support sleeve of each of the central module, the first side module and the second side module to connect the modules together, the relative positioning of the central module, the first side module and the second side module along the elongate support being selectively adjustable to balance respective weight of riders positioned on the first seat and the second seat;
a steering shaft extending through the steering sleeve of each of the central module, the first side module and the second side module, such that rotational movement of the steering sleeve of either of the first side module or the second side module serves to rotate the steering sleeve of the central module, thereby creating a master to slave relationship between movements of either the first set of handle bars or the second set of handle bars and the slave steering linkage; and a drive shaft extending through the drive coupler of each of the central module, the first side module and the second side module, such that rotational movement of the drive coupler of either of the first side module or the second side module serves to rotate a slave drive sprocket on the central module, thereby imparting a rotational force to the slave drive linkage of the central module.
a central module having a central frame with a front and a rear, a front wheel rotatably mounted at the front of the frame, a rear wheel rotatably mounted at the rear of the frame, a central coupling adapter positioned toward the rear of the frame and forward of the rear wheel, the coupling adapter having a support sleeve, a steering sleeve and a drive coupler, a slave steering linkage including two control arms extending from the front wheel rearwardly to the steering sleeve, such that rotation of the steering sleeve acts upon the control arms to cause movement of the slave steering linkage, a slave drive linkage including an endless chain extending from a drive sprocket on the drive sleeve to a driven sprocket on the rear wheel, such that rotation of the drivecoupler causes the drive sprocket to provide a motive force via the endless chain to the driven sprocket;
a first side module having a first frame with a front and a rear, the frame supporting a first seat, a first set of pedals mounted on a first crank being rotatably supported at the front of first frame, a first coupling adapter being positioned at the rear of the first, the first coupling adapter having a support sleeve, a steering sleeve and a drive coupler, a first set of handle bars being mounted to the first frame, a first steering linkage including two control arms extending from the first set of handle bars rearwardly to the steering sleeve, such that movement of the first set of handle bars acts upon the control arms to cause rotational movement of the steering sleeve, a first drive linkage including a drive sprocket on the first crank with an endless chain extending from the drive sprocket rearwardly to a driven sprocket on the drive coupler, such that a rotary force imparted to the first crank is transmitted via the drive sprocket and the endless chain to the driven sprocket to rotate the drive coupler;
a second side module having a second frame with a front and a rear, the frame supporting a second seat, a second set of pedals mounted on a second crank rotatably supported by at the front of the second frame, a second coupling adapter positioned at the rear of the second frame, the second coupling adapter having a support sleeve, a steering sleeve and a drive coupler, a second set of handle bars being mounted to the second frame, a second steering linkage including two control arms extending from the second set of handle bars rearwardly to the steering sleeve, such that movement of the second set of handle bars acts upon the control arms to cause rotational movement of the steering sleeve, a second drive linkage including a drive sprocket on the second crank with an endless chain extending from the drive sprocket rearwardly to a driven sprocket on the drive coupler, such that a rotary force imparted to the second crank is transmitted via the drive sprocket and the endless chain to the driven sprocket to rotate the drive coupler;
an elongate support extending through the support sleeve of each of the central module, the first side module and the second side module to connect the modules together, the relative positioning of the central module, the first side module and the second side module along the elongate support being selectively adjustable to balance respective weight of riders positioned on the first seat and the second seat;
a steering shaft extending through the steering sleeve of each of the central module, the first side module and the second side module, such that rotational movement of the steering sleeve of either of the first side module or the second side module serves to rotate the steering sleeve of the central module, thereby creating a master to slave relationship between movements of either the first set of handle bars or the second set of handle bars and the slave steering linkage; and a drive shaft extending through the drive coupler of each of the central module, the first side module and the second side module, such that rotational movement of the drive coupler of either of the first side module or the second side module serves to rotate a slave drive sprocket on the central module, thereby imparting a rotational force to the slave drive linkage of the central module.
8. The side by side bicycle as defined in Claim 2, wherein the first seat is selectively adjustable between a number of locking positions between the front and the rear of the first frame and the second seat is selectively adjustable between a number of locking positions between the front and the rear of the second frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002420059A CA2420059C (en) | 2003-02-26 | 2003-02-26 | Side by side bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002420059A CA2420059C (en) | 2003-02-26 | 2003-02-26 | Side by side bicycle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2420059A1 CA2420059A1 (en) | 2004-08-26 |
| CA2420059C true CA2420059C (en) | 2009-07-21 |
Family
ID=32873363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002420059A Expired - Lifetime CA2420059C (en) | 2003-02-26 | 2003-02-26 | Side by side bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2420059C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1400681B1 (en) * | 2010-06-30 | 2013-06-28 | Aurora S R L | CHASSIS FOR CHASSIS AND CYCLING VEHICLE INCLUDING THIS FRAME |
-
2003
- 2003-02-26 CA CA002420059A patent/CA2420059C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2420059A1 (en) | 2004-08-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4108460A (en) | Amplified cycle steering system | |
| US6953203B2 (en) | Human powered vehicle | |
| US4458908A (en) | Tandem tricycle | |
| US5067738A (en) | Child powered bicycle trailer | |
| US20090273155A1 (en) | Rear-pedaling standing type bicycle structure | |
| EP2802507B1 (en) | Tricycle and associated components | |
| US8602434B2 (en) | Double chainring drivetrain | |
| JP2012091788A (en) | Foldable bicycle | |
| EP2803565B1 (en) | A drive transmission group to a steer wheel of a vehicle | |
| US8070174B2 (en) | Multi-mode tandem bicycle | |
| CA2420059C (en) | Side by side bicycle | |
| US5577749A (en) | Twin gear drive assembly for a bicycle | |
| US20110062678A1 (en) | Chainless bicycle drive system with speed change arrangement | |
| CA2510361C (en) | Bicycle wheel mounting | |
| US20060237945A1 (en) | Common axis drive and shift system | |
| KR101028989B1 (en) | Handle for bicycle | |
| US378253A (en) | Velocipede | |
| JP2006511397A5 (en) | ||
| JP7365706B2 (en) | Two-wheeled bicycle that can change shape | |
| CN105292362B (en) | Bicycle front-wheel drive device and the bicycle using the device | |
| KR101314177B1 (en) | Bicycle of advance driving gear | |
| KR20080000002A (en) | Recumbent bike | |
| AU2013214967B2 (en) | Tandem bicycle | |
| KR101705295B1 (en) | Tandem bicycle | |
| EP1012031B1 (en) | A bicycle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20230227 |