U.S. patent application number 14/844917 was filed with the patent office on 2016-03-10 for cycle frame fluid reservoir.
This patent application is currently assigned to VENTUM LLC. The applicant listed for this patent is Ventum LLC. Invention is credited to Peter Kenneth Seear.
Application Number | 20160068216 14/844917 |
Document ID | / |
Family ID | 55436804 |
Filed Date | 2016-03-10 |
United States Patent
Application |
20160068216 |
Kind Code |
A1 |
Seear; Peter Kenneth |
March 10, 2016 |
Cycle Frame Fluid Reservoir
Abstract
A fluid reservoir for a cycle frame, the cycle frame including a
top tube extending from a head end to a seat mounting, the fluid
reservoir including a body defining a cavity for containing a
fluid, the body positioned in abutment with at least a part of the
top tube in use, and wherein the body is shaped so that the fluid
reservoir and the at least a part of the top tube cooperate to
define an aerodynamic profile.
Inventors: |
Seear; Peter Kenneth;
(Brookfield, AU) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Ventum LLC |
Miami Beach |
FL |
US |
|
|
Assignee: |
VENTUM LLC
Miami Beach
FL
|
Family ID: |
55436804 |
Appl. No.: |
14/844917 |
Filed: |
September 3, 2015 |
Current U.S.
Class: |
280/838 |
Current CPC
Class: |
B62J 99/00 20130101;
B62K 19/02 20130101; B62K 19/36 20130101; B62J 9/22 20200201; B62K
19/16 20130101; B62K 19/40 20130101; B62K 3/06 20130101; B62K 3/10
20130101; B62K 3/04 20130101; B62J 9/26 20200201 |
International
Class: |
B62J 9/00 20060101
B62J009/00 |
Foreign Application Data
Date |
Code |
Application Number |
Sep 5, 2014 |
AU |
2014903546 |
May 13, 2015 |
AU |
2015901742 |
Claims
1) A fluid reservoir for a cycle frame, the cycle frame including a
top tube extending from a head end to a seat mounting, the fluid
reservoir including a body defining a cavity for containing a
fluid, the body positioned in abutment with at least a part of the
top tube in use, and wherein the body is shaped so that the fluid
reservoir and the at least a part of the top tube cooperate to
define an aerodynamic profile.
2) A fluid reservoir according to claim 1, wherein the reservoir
includes a recess extending at least part way along an edge surface
of the reservoir, and wherein the recess is adapted to receive at
least one of: a) at least part of an underside of the top tube; b)
at least part of an upper side of the top tube; and, c) at least
part of a rear end of the top tube.
3) A fluid reservoir according to claim 1, wherein the body is
positioned at least partially in abutment with a trailing edge
surface of the cycle frame.
4) A fluid reservoir according to claim 1, wherein at least part of
a leading edge surface of the reservoir conforms to a shape of at
least part of a leading edge of the frame to define a substantially
continuous aerodynamic surface.
5) A fluid reservoir according to claim 1, wherein a leading edge
surface of the body abuts against a shroud, the shroud conforming
to a shape of at least part of a leading edge of the frame to
define a substantially continuous aerodynamic surface.
6) A fluid reservoir according to claim 1, wherein at least part of
a leading edge surface of the reservoir is curved so as to flare
outwardly from at least part of the frame in a direction of travel
of the cycle.
7) A fluid reservoir according to claim 1, wherein at least part of
the body is tapered in a direction of travel of the cycle.
8) A fluid reservoir according to claim 1, wherein at least part of
a trailing edge of the body is tapered.
9) A fluid reservoir according to claim 1, wherein the body
includes a recess located on at least part of a leading edge
surface of the body.
10) A fluid reservoir according to claim 1, wherein the cycle frame
includes a head end, and wherein the body includes a recess that is
adapted to receive at least part of a rear side of the head
end.
11) A fluid reservoir according to claim 1, wherein the cycle frame
includes a down tube extending from a head end to a bottom bracket,
and wherein the body includes a recess that is adapted to receive
at least part of a rear side of the down tube.
12) A fluid reservoir according to claim 1, wherein the fluid
reservoir is configured for use on a V-frame cycle.
13) A fluid reservoir according to claim 1, wherein the top tube
includes a reservoir recess and the fluid reservoir is removably
mounted within the reservoir recess in use.
14) A fluid reservoir according to claim 13, wherein the cycle
frame further includes: a) a connecting portion extending from one
of the head end or the seat mounting to a bottom bracket mounting;
and, b) a wheel mounting portion extending from the bottom bracket
mounting to a wheel mounting end.
15) A fluid reservoir according to claim 14, wherein the reservoir
recess is provided in one of: a) an upper surface of the top tube;
b) a lower surface of the top tube; and, c) a lateral side surface
of the top tube.
16) A fluid reservoir according to claim 15, wherein the reservoir
recess extends at least one of: a) substantially along a length of
the top tube; and, b) part way down the connecting portion.
17) A fluid reservoir according to claim 1, wherein the top tube
includes a substantially elongate through-opening extending from a
first side of the top portion to a second side of the top portion
and wherein the fluid reservoir is removably mounted within the
through-opening in use.
18) A fluid reservoir according to claim 1, wherein the fluid
reservoir includes one or more reservoir portions that contain
respective fluids in use.
19) A cycle frame including a top tube extending from a head end to
a seat mounting and a fluid reservoir including a body defining a
cavity for containing a fluid, the body positioned in abutment with
at least a part of the top tube in use, and wherein the body is
shaped so that the fluid reservoir and the at least a part of the
top tube cooperate to define an aerodynamic profile.
20) A cycle frame including: a) a top tube extending from a head
end to a seat mounting, the top tube including a reservoir recess;
b) a connecting portion extending from one of the head end or the
seat mounting to a bottom bracket mounting; c) a wheel mounting
portion extending from the bottom bracket mounting to a wheel
mounting end; and, d) a fluid reservoir removably mounted within
the reservoir recess in use, wherein the fluid reservoir is shaped
so that the fluid reservoir and top tube cooperate to define an
aerodynamic profile.
Description
PRIORITY DOCUMENTS
[0001] The present application claims priority from Australian
Provisional Patent Application No. 2014903546 titled "Cycle frame"
and filed on 5 Sep. 2014 and Australian Provisional Application No.
2015901742 titled "Cycle frame fluid reservoir" and filed on 13 May
2015, the contents of which are hereby incorporated by reference in
their entirety.
BACKGROUND OF THE INVENTION
[0002] This invention relates to a fluid reservoir for use with a
cycle frame and a cycle frame incorporating a fluid reservoir.
DESCRIPTION OF THE PRIOR ART
[0003] The reference in this specification to any prior publication
(or information derived from it), or to any matter which is known,
is not, and should not be taken as an acknowledgment or admission
or any form of suggestion that the prior publication (or
information derived from it) or known matter forms part of the
common general knowledge in the field of endeavour to which this
specification relates.
[0004] It is well known that aerodynamic drag can have a
significant impact on energy usage during cycling. In particular,
an increase in drag can result in reduced overall speeds and
increased time to cover a given distance, which is particularly
important during competitive cycling.
[0005] Many attempts have been made to reduce the effective drag of
bicycles by modifying the design of the cycle frame, including
through the use of tapered frame members, and specific designs of
frame. Similarly, many professional riders undergo wind tunnel
training in order to improve their riding posture and hence reduce
drag. Whilst these measures have proved effective, additional
improvement gains are always being sought.
[0006] Whilst racing, riders will also need to consume significant
quantities of fluids. Typically this is achieved through a
combination of water bottles mounted to the frame and water
supplied to riders whilst on the move, for example at water
stations. The frame mounted water bottles tend to have a generally
cylindrical shape and can therefore contribute significantly to
drag, whilst water stations can slow riders when they attempt to
collect water whilst passing, or in the event that water is not
successfully collected, leading to dehydration during the ride.
SUMMARY OF THE PRESENT INVENTION
[0007] In one broad form the present invention seeks to provide a
fluid reservoir for a cycle frame, the cycle frame including a top
tube extending from a head end to a seat mounting, the fluid
reservoir including a body defining a cavity for containing a
fluid, the body positioned in abutment with at least a part of the
top tube in use, and wherein the body is shaped so that the fluid
reservoir and the at least a part of the top tube cooperate to
define an aerodynamic profile.
[0008] Typically the reservoir includes a recess extending at least
part way along an edge surface of the reservoir, and wherein the
recess is adapted to receive at least one of: [0009] a) at least
part of an underside of the top tube; [0010] b) at least part of an
upper side of the top tube; and, [0011] c) at least part of a rear
end of the top tube.
[0012] Typically the body is positioned at least partially in
abutment with a trailing edge surface of the cycle frame.
[0013] Typically at least part of a leading edge surface of the
reservoir conforms to a shape of at least part of a leading edge of
the frame to define a substantially continuous aerodynamic
surface.
[0014] Typically at least part of a leading edge surface of the
body conforms to a shape of at least part of a leading edge of the
frame to define a substantially continuous aerodynamic surface.
[0015] Typically a leading edge surface of the body abuts against a
shroud, the shroud conforming to a shape of at least part of a
leading edge of the frame to define a substantially continuous
aerodynamic surface.
[0016] Typically at least part of a leading edge surface of the
reservoir is curved so as to flare outwardly from at least part of
the frame in a direction of travel of the cycle.
[0017] Typically at least part of the body is tapered in a
direction of travel of the cycle.
[0018] Typically at least part of a trailing edge of the body is
tapered.
[0019] Typically the body includes a recess located on at least
part of a leading edge surface of the body.
[0020] Typically the cycle frame includes a head end, and wherein
the body includes a recess that is adapted to receive at least part
of a rear side of the head end.
[0021] Typically the cycle frame includes a down tube extending
from a head end to a bottom bracket, and wherein the body includes
a recess that is adapted to receive at least part of a rear side of
the down tube.
[0022] In one broad form the present invention seeks to provide a
fluid reservoir for a cycle frame, the fluid reservoir including a
body defining a cavity that contains a fluid in use, the reservoir
including a recess extending at least part way along an edge
surface of the reservoir, the recess conforming to the shape of
part of the frame to receive the part of the frame therein.
[0023] Typically the cycle frame includes a bottom bracket and the
body is adapted to abut against at least part of the bottom
bracket.
[0024] Typically a trailing edge surface of the body is adapted to
conform to a shape of a rear wheel of the cycle.
[0025] Typically the fluid reservoir is at least partially
transparent to thereby allow fluid levels within the fluid
reservoir to be observed.
[0026] Typically the fluid reservoir includes one or more reservoir
portions that contain respective fluids in use.
[0027] Typically the fluid reservoir includes a lower surface
extending downwardly to define a sump so that fluid drains into the
sump.
[0028] Typically the reservoir includes a drinking tube extending
from the fluid reservoir, the drinking tube terminating within the
sump thereby allowing fluid to be removed from within the sump.
[0029] Typically the fluid reservoir is configured for use on a
V-frame cycle.
[0030] Typically the top tube includes a reservoir recess and the
fluid reservoir is removably mounted within the reservoir recess in
use.
[0031] Typically the cycle frame further includes: [0032] a) a
connecting portion extending from one of the head end or the seat
mounting to a bottom bracket mounting; and, [0033] b) a wheel
mounting portion extending from the bottom bracket mounting to a
wheel mounting end.
[0034] Typically the reservoir recess is provided in one of: [0035]
a) an upper surface of the top tube; [0036] b) a lower surface of
the top tube; and, [0037] c) a lateral side surface of the top
tube.
[0038] Typically a first reservoir recess is provided in a first
lateral side surface of the top tube and a second reservoir recess
is provided in a second lateral side surface of the top tube,
wherein the first and second reservoir recesses are separated by a
longitudinally extending web and first and second fluid reservoirs
are removably mounted within the first and second reservoir
recesses in use.
[0039] Typically the reservoir recess extends at least one of:
[0040] a) substantially along a length of the top tube; and, [0041]
b) part way down the connecting portion.
[0042] Typically the top tube includes a substantially elongate
through-opening extending from a first side of the top portion to a
second side of the top portion and wherein the fluid reservoir is
removably mounted within the through-opening in use.
[0043] Typically the fluid reservoir includes a refill port.
[0044] Typically the refill port is covered by a plurality of
flexibly resilient leaves which, in use, deflect out of the way to
allow fluid to enter the refill port.
[0045] Typically the refill port is disposed through an upper
surface of the fluid reservoir.
[0046] In another broad form the present invention seeks to provide
a cycle frame including a top tube extending from a head end to a
seat mounting and a fluid reservoir including a body defining a
cavity for containing a fluid, the body positioned in abutment with
at least a part of the top tube in use, and wherein the body is
shaped so that the fluid reservoir and the at least a part of the
top tube cooperate to define an aerodynamic profile.
[0047] In a further broad form the present invention seeks to
provide a cycle frame including: [0048] a) a top tube extending
from a head end to a seat mounting, the top tube including a
reservoir recess; [0049] b) a connecting portion extending from one
of the head end or the seat mounting to a bottom bracket mounting;
[0050] c) a wheel mounting portion extending from the bottom
bracket mounting to a wheel mounting end; and, [0051] d) a fluid
reservoir removably mounted within the reservoir recess in use,
wherein the fluid reservoir is shaped so that the fluid reservoir
and top tube cooperate to define an aerodynamic profile.
[0052] Typically the reservoir recess includes a seat mounting face
including apertures extending through a seat mounting that receive
seat mounting bolts, the seat mounting bolts threadingly engaging a
removable seat clamp to thereby clamp a seat post within the seat
mounting.
[0053] In a further broad form the present invention seeks to
provide cycle frame including: [0054] a) a top tube extending from
a head end to a seat mounting, the top tube including a
substantially elongate through-opening extending from a first side
of the top tube to a second side of the top tube; [0055] b) a
connecting portion extending from the seat mounting to a bottom
bracket mounting; [0056] c) a wheel mounting portion extending from
the bottom bracket mounting to a wheel mounting end; and, [0057] d)
a fluid reservoir removably mounted within the through-opening in
use, wherein the fluid reservoir is shaped so that the fluid
reservoir and top tube cooperate to define an aerodynamic
profile.
BRIEF DESCRIPTION OF THE DRAWINGS
[0058] An example of the present invention will now be described
with reference to the accompanying drawings, in which:--
[0059] FIG. 1 is a schematic side view of an example of a cycle
frame;
[0060] FIG. 2A is a schematic side view of an example of a fluid
reservoir mounted to the cycle frame of FIG. 1;
[0061] FIG. 2B is a schematic cross sectional view through the line
A-A;
[0062] FIG. 2C is a schematic cross sectional view through the line
B-B;
[0063] FIG. 2D is a schematic side view of the fluid reservoir of
FIG. 2A;
[0064] FIG. 2E is a schematic cross sectional view through the line
at C-C' of FIG. 2D;
[0065] FIG. 2F is a schematic cross sectional view through the line
D-D' of FIG. 2D;
[0066] FIG. 3A is a schematic side view of a second example of a
fluid reservoir mounted to the cycle frame of FIG. 1;
[0067] FIG. 3B is a schematic cross sectional view through the line
E-E' of FIG. 3A;
[0068] FIG. 3C is a schematic cross sectional view through the line
F-F' of FIG. 3A;
[0069] FIG. 4A is a schematic side view of a third example of a
fluid reservoir mounted to the cycle frame of FIG. 1;
[0070] FIG. 4B is a schematic cross sectional view along the line
G-G' of FIG. 4A;
[0071] FIG. 4C is a schematic cross sectional view along the line
H-H' of FIG. 4A;
[0072] FIG. 5A is a schematic side view of a fourth example of a
fluid reservoir mounted to the cycle frame of FIG. 1;
[0073] FIG. 5B is a schematic cross sectional view along the line
I-I' of FIG. 5A;
[0074] FIG. 6A is a schematic side view of a fifth example of a
fluid reservoir mounted to the cycle frame of FIG. 1;
[0075] FIG. 6B is a schematic cross sectional view along the line
J-J' of FIG. 6A;
[0076] FIG. 6C is a schematic cross sectional view along the line
K-K' of FIG. 6A;
[0077] FIG. 7A is a schematic side view of a sixth example of a
fluid reservoir mounted to the cycle frame of FIG. 1;
[0078] FIG. 7B is a schematic cross sectional view along the line
L-L' of FIG. 7A;
[0079] FIG. 8 is a schematic side view of a seventh example of a
fluid reservoir mounted to the cycle frame of FIG. 1;
[0080] FIG. 9A is a schematic exploded cross sectional view of an
eighth example of a fluid reservoir mounted to the cycle frame of
FIG. 1;
[0081] FIG. 9B is a schematic constructed view of the fluid
reservoir of FIG. 9A;
[0082] FIG. 10A is a schematic isometric view of another example of
a cycle frame;
[0083] FIG. 10B is a schematic side view of the cycle frame of FIG.
10A;
[0084] FIG. 10C is a schematic side view of a bicycle incorporating
the cycle frame of FIG. 10A;
[0085] FIG. 10D is a schematic isometric view of the cycle frame of
FIG. 10A in an exploded configuration;
[0086] FIG. 10 E is a schematic rear isometric view of the cycle
frame of FIG. 10A with the fluid reservoir and seat clamp
omitted;
[0087] FIG. 11 is a schematic perspective view of an example of a
fluid reservoir having a refill port;
[0088] FIG. 12 is a schematic perspective view of a further example
of a fluid reservoir having a refill port;
[0089] FIG. 13 is a schematic perspective view of another example
of a fluid reservoir having a refill port;
[0090] FIG. 14A is a schematic side view of a further example of a
cycle frame having a through-opening in the top tube of the
frame;
[0091] FIG. 14B is a schematic side view of the cycle frame of FIG.
14A showing an example of a fluid reservoir located within the
through-opening of the top tube of the frame;
[0092] FIG. 15A is a schematic side view of a further example of a
cycle frame having a recess underneath the top tube of the
frame;
[0093] FIG. 15B is a schematic side view of the cycle frame of FIG.
15A showing an example of a fluid reservoir located in the recess
underneath the top tube of the frame;
[0094] FIG. 16A is a schematic side view of a further example of a
cycle frame having a recessed top tube including a longitudinally
extending web;
[0095] FIG. 16B is a first example of a sectional view along the
line H-H' through the top tube of the cycle frame of FIG. 16A;
[0096] FIG. 16C is the same sectional view as shown in FIG. 16B
with fluid reservoirs mounted in recessed portions of the top tube
of the cycle frame;
[0097] FIG. 16D is a second example of a sectional view along the
line H-H' through the top tube of the cycle frame of FIG. 16A;
[0098] FIG. 16E is the same sectional view as shown in FIG. 16D
with fluid reservoirs mounted in recessed portions of the top tube
of the cycle frame;
[0099] FIG. 16F is a third example of a sectional view along the
line H-H' through the top tube of the cycle frame of FIG. 16A;
[0100] FIG. 16G is the same sectional view as shown in FIG. 16D
with a fluid reservoir mounted in a recessed portion of the top
tube of the cycle frame;
[0101] FIG. 17A is a schematic side view of another example of a
cycle frame;
[0102] FIG. 17B is a partially exploded schematic side view of the
cycle frame of FIG. 17A showing the fluid reservoir separated from
the top tube;
[0103] FIG. 18 is a partial schematic side view of another example
of a cycle frame;
[0104] FIG. 19 is a partial schematic side view of another example
of a cycle frame; and,
[0105] FIG. 20 is a partial schematic side view of another example
of a cycle frame.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0106] An example of a cycle frame will now be described with
reference to FIG. 1.
[0107] In this example the cycle frame 100 includes a top tube 101
extending from a seat mounting 102, which supports a seat 103, to a
head portion 104. The head portion 104 typically supports forks
105, which in use support a front wheel 106, and which are coupled
via a stem (not shown) to handlebars 107, such as aero bars used in
racing. The head portion 104 is typically coupled by a down tube
108 to a bottom bracket 109 that supports a crank set including
chain rings 110, as well as a crank and pedals, that in use drive a
chain (not shown). A front derailleur is also typically provided
coupled to the down tube 108 for selectively engaging the chain
with one of the chain rings 110. Chain stays 111 extend from the
bottom bracket 109 to a wheel mounting 112, which in use supports a
gear cassette and rear derailleur mechanism 113 and rear wheel
114.
[0108] In one example, the cycle frame is part of a Dimond.TM.
triathlon or racing bike, in which case each of the top tube 101,
head portion 104 and down tube 108 are profiled to maximise
aerodynamic efficiency. In particular, these typically flare
outwardly from a leading edge and tapering towards a trailing edge
to thereby optimise airflow and minimise wind resistance. In the
case of the top tube 101, as this is angled downwardly towards the
head portion, tapering typically occurs towards the underside edge.
However, it will be appreciated from the following that this is
only one example of the form of cycle frame with which the fluid
reservoir can be used, and this is not intended to be limiting.
[0109] It is known that such arrangements are optimised for
aerodynamic efficiency thereby reducing drag allowing riders to
reach a higher top speed and/or ride with greater efficiency. In
practice however, users typically attached water bottles either to
the handlebars 107, for a example between elbow rests of the aero
bars, or rearwardly of the seat. When position in front of the
handlebars, this causes disruption of airflow over the frame
rearwardly of the bottles, whilst positioning the bottles
rearwardly of the seats leads to the creation of eddies and
turbulence in airflow exiting the frame, also significantly
increasing drag. This is exacerbated by the fact that water bottles
are typically cylindrical in shape and do not themselves result in
clean airflow around the bottle.
[0110] An example of a fluid reservoir will now be described with
reference to FIGS. 2A to 2F.
[0111] In this example, the fluid reservoir 200 includes a body 210
defining a cavity 211 for containing a fluid in use. The body 210
includes at least one recess extending at least part way along an
edge surface of the body, the recess conforming to the shape of
part of the cycle frame to receive the part of the frame
therein.
[0112] In the current example, the fluid reservoir includes two
recesses 212, 214 provided in upper and leading edge surfaces 213,
215 respectively. These allow the fluid reservoir to be mounted to
the cycle frame against an underside of the top tube 101 and a rear
side of the head portion 104, such that the underside of the top
tube 101 and trailing edge of the head portion 104 are received in
the recesses 212, 214, respectively.
[0113] The above described arrangement provide a number of
benefits. In particular, this allows the body 210 to be positioned
at least partially in abutment with a trailing edge surface of the
cycle frame, which means that airflow over the frame is then
directed immediately over the outer surface of the fluid reservoir
body 210, in a continuous manner, thereby preventing the creation
of turbulent flow between the cycle frame and body, which in turns
leads to increases in drag.
[0114] Additionally, the frame and body can cooperate to define an
aerodynamic profile such that airflow over the surface of the cycle
frame and the body is smooth. In one example, this achieved by
arranging at least part of a leading edge surface of the reservoir,
and in particular the body to conform to a shape of at least part
of a leading edge of the frame. Thus, in this example, the leading
edge surface 215 is curved so as to flare outwardly from at least
part of the frame in a direction of travel of the cycle, and
substantially conforms to the leading edge of the head portion 104,
so as to define a substantially continuous aerodynamic surface.
However, as an alternative, this could be achieved using a shroud
as will be described in more detail below.
[0115] Similarly, the upper edge surface 213 is curved and
substantially conforms to the upper edge of the top tube 101. Thus,
as will be apparent from the cross sectional views of FIGS. 2B and
2C, airflow around the head portion 104 and top tube 101 is
directed outwardly and around the body 210 with minimal
disturbance, in particular avoiding the creation of eddies or
turbulent airflow.
[0116] Additionally, the body is tapered, at least in a direction
of travel of the cycle, and more specifically towards a trailing
edge 219, as shown in FIG. 2B, so as to create smooth airflow from
the trailing edge of the fluid reservoir which in turn further
reduces drag.
[0117] The recess is typically located on at least a part of a
leading edge of the body, which in this case includes the recess
214, which extends along the entire length of the leading edge
surface 215. This facilitates connection of the fluid reservoir
body 210 to the trailing edge of the head portion 104. Similarly,
in this example the body recess 212 extends along an upper edge
surface 213 allowing the recess 212 to receive part of an underside
of the top tube 101, so that the fluid reservoir is in abutment
with and accommodates at least part of both the top tube 101 and
head portion 104. This enables the fluid reservoir to form an
integral aerodynamic surface with both of the top tube 101 and head
portion 104 thereby minimising drag. As will be described in more
detail below alternative examples are possible.
[0118] The fluid reservoir typically also includes a lower surface
217 that extends downwardly to define a sump 218. In use, a
drinking tube 220 extends from a position proximate the handlebars
107 and terminates within the sump 218, allowing fluid to be
extracted directly from the sump 218, thereby enabling a rider to
drink substantially all the fluid within the reservoir without
shifting their position on the bike, which is important in
maintaining a minimum drag profile during riding.
[0119] The body 210 has a generally elongate rectangular shape,
stretching along the underside of the top tube, thereby maximising
the fluid cavity volume, and hence the amount of fluid that can be
stored, whilst having tapering and tear drop profiles in horizontal
and vertical planes, to thereby maximise the aerodynamic efficiency
as described above.
[0120] The body 210 can be made of any suitable material and this
could include any one or more of high-density polyethylene (HDPE),
low-density polyethylene (LDPE), copolyester, polypropylene, or the
like. In one example, the body is transparent allowing a rider to
visually assess an amount of available fluid remaining for
consumption during a race. The fluid reservoir can also be divided
internally, for example using dividing wall (not shown) running
along an internal length of the cavity 211, allowing the fluid
reservoir to be divided into respective portions, allowing
different fluids such as isotonic drink and water to be delivered
via different drinking tubes.
[0121] The body 210 could be mounted on the frame using a variety
of techniques. In one example, this can be achieved solely through
interaction between the recess and the frame, so that the body is
mounted using a friction fit, interference fit, clip fit, or the
like. A further alternative is the use of magnetic coupling or the
like, which can be used in addition to or as an alternative to
other mounting techniques.
[0122] In any event, in the above described example, the body
recesses receive at least part of the underside of the top tube and
a trailing edge of the head portion. However, it will be
appreciated that other alternative arrangements can also be
provided in accordance with the above described principles and a
number of further examples will now be described. For the purpose
of these examples, similar reference numerals will be used to
denote similar features, and these will not be described in detail
unless they have an impact on the operation of the fluid
reservoir.
[0123] A second example of a fluid reservoir will now be described
with reference to FIGS. 3A to 3C.
[0124] In this example, the fluid reservoir 300 includes a body 310
defining a fluid cavity 311, and a drinking tube 320. The body 310
is generally trapezoidal in shape and is positioned in use,
rearwardly of the head portion 104, between the top tube 101 and
the down tube 108. The fluid reservoir would typically include
recesses 312, 314, 316 along each of upper, leading and lower edge
surfaces 313, 315, 317, which respectively receive an underside of
the top tube 101, a trailing edge of the head portion 104 and a
rear upper side of the down tube 108.
[0125] Accordingly, in this arrangement the body 310 includes
recesses that receive each of the top tube 101, head portion 104
and down tube 108. The upper, leading and lower edge surfaces 313,
315, 317 are curved to generally conform to the upper, leading and
lower edges of these components of the frame, whilst the body 310
again tapers along its length towards the trailing edge 319,
thereby removing gaps between the fluid reservoir and frame, as
well as providing an aerodynamic profile to facilitate smooth
airflow and reduce drag.
[0126] A third example of a fluid reservoir will now be described
with reference to FIGS. 4A to 4C.
[0127] In this example, the fluid reservoir 400 includes a body 410
defining a fluid cavity 411, and recesses 414, 416 provided on
leading and underside edge surfaces 415, 417. The recesses engage a
trailing edge of the head portion 104 and an upper rearward surface
of the downtube 108 respectively, so that the fluid reservoir is
supported on a rear side of the down tube 108 and abuts against and
receives a trailing edge of the head portion 104. In this instance,
the body 210 is elongate and generally rectangular in shape so that
it extends along substantially the entire down tube 108. The body
includes a tear drop shape, with curved underside and leading edges
417, 415, tapering towards a rearward trailing edge 419.
[0128] A fourth example of a fluid reservoir will now be described
with reference to FIGS. 5A and 5B.
[0129] In this example, the fluid reservoir 500 includes a
generally rectangular elongate body 510 defining a fluid cavity
511, and a single recess 516 extending along an underside edge
surface 517. The recess 516 receives an upper surface of the top
tube 101, so that the fluid reservoir is supported on top of the
top tube 101, extending substantially along the length of the top
tube 101. Again, in this example, the upper and lower surfaces 513,
517 of the body are shaped to define a teardrop shape, with the
lower surface 517 generally conforming to the underside surface of
the top tube 101.
[0130] A fifth example of a fluid reservoir will now be described
with reference to FIGS. 6A to 6C.
[0131] In this example, the fluid reservoir 600 includes a
generally rectangular elongate body 610 defining a fluid cavity
611, and a single recess 612 extending downwardly from an upper
surface 613 and inwardly from the leading edge surface 615,
allowing the fluid reservoir 600 to extend along either side of the
top tube 101. Again, the upper edge 612 surface of the body to
conform to the shape of the top tube 101, whilst tapering towards
the lower and trailing edges 517, 519.
[0132] A sixth example of a fluid reservoir will now be described
with reference to FIGS. 7A to 7C.
[0133] In this example, the fluid reservoir 700 includes a
generally triangular body 710 defining a fluid cavity 711. A single
recess 716 is provided along a leading underside surface 717 for
receiving an upper trailing surface of the down tube 108, whilst
the tip of the triangular shape abuts against the bottom bracket
109. The leading underside surface 717 is shaped to conform to the
down tube 108, to thereby provide an aerodynamic leading edge.
[0134] However, in this example, a trailing edge 719 of the body
710 is widened to correspond to a width of the rear wheel 114, so
that airflow is directed around the down tube 108, and then around
the body 710 and wheel 114. This avoids airflow having to pass
round first the down tube 108 and then separately around the wheel
114, leading to the most drag efficient design as it reduces
significantly reduces the drag induced by the rear wheel 114.
However, in this example fluid needs to be drawn up a significant
height to the rider, which can make draining all of the fluid from
the reservoir difficult depending on the circumstances of use.
[0135] A seventh example of a fluid reservoir will now be described
with reference to FIG. 8.
[0136] In this example, the fluid reservoir 800 includes a
generally triangular body 810 defining a fluid cavity, which is
similar to the arrangement of FIGS. 3A to 3C. In this example
however, the leading edge 815, as well as flaring outwardly from
the frame, is also curved into the upper and lower edges 813, 817
for further aerodynamic efficiency. It will be appreciated that
this could also be applied to other ones of the configurations and
use of straight edges is not intended to be limiting.
[0137] An eighth example of a fluid reservoir will now be described
with reference to FIGS. 9A and 9B.
[0138] In this example, the fluid reservoir 900 includes a body 910
defining a fluid cavity 911. As will become apparent from the
following, the body 910 could be of a generally similar shape to
that of any of the previous embodiments. However, in this example,
the leading edge 915 of the body 910 is not flared, but is instead
flattened with an enlarged recess 914. This arrangement can still
be used to accommodate part of the frame, such as the headset 104,
in a manner similar to that described above, but the leading edge
915 does not necessarily conform to the shape of the frame.
[0139] Instead, a separate shroud 930 is provided, that in use sits
forwardly of the leading edge 915, so that the leading edge abuts
against a back of the shroud 930. The shroud 930 has an outer
surface that cooperates with the frame to define an aerodynamic
profile, and in one example, includes an inner surface that
confirms to the frame, so as to allow the shroud to be positioned
securely against the frame.
[0140] In use, this arrangement allows the fluid reservoir 900 to
be formed from a body 910 that is not necessarily custom designed
for a specific frame. Instead, the body 910 is adapted to be used
with a wider variety of frames, with a respective shroud being
provided for each different frame so as to define an aerodynamic
overall profile. As the shroud can be manufactured more easily than
the body, this increases the ease with which the reservoir can be
adapted for use with different styles of frame. In any event, it
will be appreciated that in this example, the reservoir is formed
from a body and shroud, which in conjunction perform a similar
function to that of the body in the examples of FIGS. 2 to 8. It
will also be appreciated from this that the recess within the body
could be wholly replaced by a recess defined by a shroud, although
generally this would not be preferred as the recess in the body
ensures at least some degree of physical interaction between the
frame and body, thereby assisting in holding the body in the
required position.
[0141] In any event, it will be appreciated that a wide range of
different designs can be encompassed within the general principle
of providing a fluid reservoir that includes a recess for receiving
part of the cycle frame, and which is shaped so as to cooperate
with the frame to provide an aerodynamically effective surface that
lowers drag. This may simply maintain the drag of the frame as
compared to the frame without an attached fluid reservoir, meaning
this is significantly more aerodynamically efficient than using a
standard water bottle, or can even enhance the aerodynamic
efficiency, resulting in a lower drag than the native frame without
a reservoir fitted.
[0142] Whilst the above examples have focussed on the use of a
"V"-shaped frame, this is not essential and many of the features
can be implemented on more traditional triangular frames, such as
UCI (Union Cycliste Internationale) compliant frames. It will
therefore be appreciated that explanation with respect to a
"V"-shaped frame, whilst particularly advantageous is not intended
to be limiting.
[0143] Whilst the above examples have focussed on providing a fluid
reservoir including at least one recess adapted to receive a part
of the frame, in other arrangements a portion of the frame may be
recessed so as to receive a fluid reservoir in use.
[0144] An example of a cycle frame including a reservoir recess
will now be described in more detail with reference to FIGS. 10A to
10E.
[0145] In this example, the frame 1000 includes a top portion 1010
(hereinafter referred to as the "top tube") extending from a head
end 1011 to seat mounting 1012, a connecting portion (or down tube)
1020 extending from the seat mounting 1012 to a bottom bracket
mounting 1031 and a wheel mounting portion (or chain stay) 1030
extending from the bottom bracket mounting 1031 to a wheel mounting
end 1032.
[0146] A number of different components can be attached to the
frame 1000 to form a functioning bicycle and examples of these will
now be described.
[0147] The head end 1011 typically includes a head tube opening, in
which is provided a stem 1041, with a headset coupled to handle
bars 1042 and one or more forks 1043 that support a front wheel
1044 in use, although any suitable arrangement can be used. The
seat mounting 1012 is typically used to support a seat post 1045
coupled to a seat 1046, and an example of this arrangement will be
described in more detail below.
[0148] In this example, the wheel mounting portion 1030 includes
two stays 1034, 1035 that extend along either side of the rear
wheel 1052, although single mono-stay arrangements could also be
used. A wheel mounting 1050 is coupled to the wheel mounting end
1032 at the end of each stay 1034, 1035, which supports an axle of
a rear wheel 1052 and which also has a gear cassette 1053 mounted
thereon. A rear derailleur 1054 may also be coupled to the wheel
mounting 1050.
[0149] The bottom bracket mounting 1031 typically includes an
opening 1033 extending laterally through the frame 1000 that
receives a crank set 1060 including chain rings 1061, a crank 1062
and pedals 1063, that in use drive a chain 1064. A front derailleur
1065 can also be provided allowing the chain to be selectively
moved between different chain rings 1061. In the example of FIG.
10C, the front derailleur 1065 is coupled to the connecting portion
1020 of the frame 1000, in accordance with standard mounting
configurations, although alternative arrangements can be used.
[0150] In this example, the top tube 1010 and wheel mounting
portion 1030 extend in substantially parallel directions and are
aligned generally horizontal, when the bicycle is supported on a
horizontal surface. The connecting portion 1020 extends generally
vertically between the top and wheel mounting portions 1010, 1030
to define a substantially "Z" shaped frame 1000.
[0151] The frame 1000 is typically a carbon fibre shell containing
a foam, such as extruded polystyrene, or polyurethane foam, which
is typically of sufficient strength to add structural strength to
the carbon fibre shell. Whilst in some embodiments foam may be
injected into the shell, this is not essential and the addition of
foam will be dependent upon the manufacturing technique used. The
frame 1000 is generally formed as a monocoque frame, with the top
tube 1010, connecting portion 1020 and wheel mounting portion 1030
being integrally formed.
[0152] In this example, the top tube 1010 includes a reservoir
recess 1111, and wherein a fluid reservoir 1170 is removably
mounted within the reservoir recess 1111 in use. The fluid
reservoir 1170 is shaped so that the fluid reservoir 1170 and top
tube 1010 cooperate to define an aerodynamic profile. It is to be
understood that the term `within` used in the above context should
be taken to mean that the fluid reservoir is mounted within an
extent of an aerodynamic profile of the frame and not internally
inside of any tubular portion of the frame.
[0153] In particular, the fluid reservoir 1170 is shaped to conform
with parts of the top tube 1010 beyond the extent of the reservoir
recess 1111. For example, the fluid reservoir 1170 can include an
upper surface 1171, which aligns with an upper surface 1112 of the
top tube 110, forwardly of the fluid reservoir 1170, and which also
aligns with an upper surface 1113 of the seat mounting 1012,
rearwardly of the fluid reservoir 1170. Similarly, side walls 1172
of the fluid reservoir 1170 align with side walls 1114 of the top
tube 1010. This arrangement avoids discontinuities and obstacles,
which can impede air flow, in turn ensuring air flows smoothly
round the top tube 1010 and reservoir 1170, which can assist in
significantly reducing aerodynamic drag.
[0154] Accordingly, in this example the shape of the reservoir 1170
is adapted to be integrated into the overall shape of the frame
1000 to thereby contribute to the aerodynamic effectiveness of the
frame 1000. This is in contrast to traditional arrangements in
which fluid reservoirs, such as water bottles, are generally
affixed externally to the frame and do not form part of the
aerodynamic profile of the frame 1000.
[0155] A number of further features of the reservoir arrangement
will now be described.
[0156] In one example, the reservoir 1170 is provided in an upper
surface of the top tube 1010, so that the upper surface 1171 of the
reservoir 1170 forms at least part of an upper surface of the top
tube 1010. This facilitates fitting and removal of the fluid
reservoir 1170, allowing this to be easily removed for refilling.
Additionally, in some examples the fluid reservoir 1170 is at least
partially transparent, for example by manufacturing this from a
suitable material or forming a transparent window, which allows a
rider to easily observe fluid levels in the fluid reservoir 1170,
for example by glancing down from their riding position. Allowing
the cyclist to visually observe fluid levels is advantageous,
particularly in competition scenarios, in terms of allowing the
rider to pace their water consumption over the duration of the
event. It is however not essential that any part of the reservoir
is transparent and in other examples it may not be. The bottle can
be made of any suitable material and this could include any one or
more of high-density polyethylene (HDPE), low-density polyethylene
(LDPE), copolyester, polypropylene, or the like.
[0157] The fluid reservoir 1170 typically extends substantially
along a length of the upper surface of the top tube 1010, thereby
maximising the volume of fluid that can be contained, therein,
although this is not essential. The fluid reservoir 1170 can also
include two or more reservoir portions, for example formed by a
dividing wall (not shown) running along an internal length of the
fluid reservoir 1170, that contain respective fluids in use. This
can be used to allow different fluids, such as water and an energy
drink, to be provided and drunk by the rider as desired, for
example via respective drinking tubes.
[0158] The fluid reservoir 170 typically includes a lower surface
1173 that generally conforms with a surface of the recess 1111. In
one example, the lower surface 1173 extends downwardly to a sump
1174 so that fluid drains into the sump 1174. The fluid reservoir
1170 can then include a drinking tube (not shown) extending from
the fluid reservoir, the drinking tube terminating within the sump
1174 thereby allowing fluid to be removed from within the sump
1174. In this arrangement, the sump 1174 forms the lowest part of
the fluid reservoir 1170 so that fluid drains preferentially into
the sump 1174, ensuring that substantially all of the fluid can be
extracted from the reservoir using the drinking tube.
[0159] The lower surface 1173 of the fluid reservoir 1170 can also
be shaped, for example, having a concave "V" profile running along
the length of the fluid reservoir 1170, which cooperates with a
corresponding convex "V" profile on the reservoir recess 1111,
thereby assisting position and centre the fluid reservoir 1170
laterally with respect to the top tube 1010. Additionally and/or
alternatively the fluid reservoir 1170 could be retained in
position using other techniques, such as friction fit, interference
fit or the like. A further alternative is the use of cooperating
magnets in the fluid reservoir 1170 and the frame 1000 to retain
the fluid reservoir 1170 in position.
[0160] The reservoir recess 1111 typically includes a seat mounting
face 1115 including apertures 1116 extending through the seat
mounting 1012 that receive seat mounting bolts (not shown). The
seat mounting bolts threadingly engage a removable seat clamp 1180
to thereby clamp the seat post 1045 within the seat mounting
1012.
[0161] In this example, the seat mounting clamp 1180 includes a
tapered body 1181, having a clamping face 1182, which in use is
mounted in a correspondingly shaped recess 1118 of the seat
mounting 1012, with the clamping face 1182 facing the seat mounting
1012. The clamping face 1182 includes threaded apertures 1183 that
receive the bolts and a channel 1184, which cooperates with a
complimentary channel 1117 in the seat mounting 1012 to define a
generally rectangular tube, having chamfered corners, for receiving
the seat post 1045. In use, the seat mounting bolts can be
tightened to draw the seat clamp 1180 towards the seat mounting
1012 thereby clamping the seat post 1045 at a desired position
within the tube.
[0162] This arrangement provides a number of advantages. For
example, in this configuration, the seat mounting clamp 1180
includes internal threads needed to engage the bolts, whereas in
traditional seat clamping arrangements these are mounted within the
frame. In this example, in the event that the threads become
stripped, the seat mounting clamp 1180 can be replaced, without
necessitating replacement of the entire frame or a structure
internal to the frame, which is typically expensive and/or complex
to perform. Additionally, the use of the rectangular seat post 1045
and tapered seat mounting clamp 1180 helps improve the aerodynamic
efficiency compared to traditional circular seat post and mounting
arrangements.
[0163] In an alternative arrangement, the seat mounting may include
an opening to receive the seat tube and a wedge clamp used to
restrain the seat tube in the seat mounting. The wedge clamp
includes at least one surface shaped to conform with an outer
surface portion of the seat tube when tightened. The wedge clamp
typically includes a pair of tapered clamp elements held together
by a threaded fastener that extends into a blind threaded insert.
Tightening the fastener causes the tapered surfaces of the wedge
elements to slide relative to each other which thereby exerts a
lateral clamping force onto the seat tube which clamps the seat
tube securely within the seat mounting.
[0164] Testing has shown that the above described bike frame can be
used to produce a bike having a significantly reduced drag compared
to more traditional arrangements of bike frame, over a range of
incident airflow angles, of at least .+-.20.degree. compared to the
direction of travel, which can in turn correspond to an increase in
speed during a race. Alternatively, the reduction in drag may
enable a rider to cycle at a given speed with less effort which can
reduce fatigue and lead to better run performance off the bike in a
triathlon for example.
[0165] The fluid reservoir may additionally include features which
allow the reservoir to be refilled on the fly such as during a
cycle or triathlon race. In such an event, an athlete may pass a
hydration station where it is possible to grab a bottle of fluid to
replace or top up a used bottle. To refill a conventional water
bottle, typically a lid needs to be unscrewed or flipped open to
provide internal access to the bottle. This can be a difficult
operation whilst riding a bike and in some cases, an athlete may
choose to stop at the hydration station in order to refill
bottles.
[0166] In an example, the fluid reservoir may include a refill port
enabling a rider to easily refill the reservoir whilst riding, i.e.
"on the fly". Examples of filling port arrangements are provided in
FIGS. 11 to 13. In FIG. 11, there is shown a fluid reservoir 1270
including a refill port 1275. The refill port 1275 is disposed
through an upper surface 1271 of the reservoir 1270 which provides
a convenient position for a rider to access whilst maintaining a
substantially aerodynamic posture.
[0167] Typically, the refill port 1275 is covered by a plurality of
flexibly resilient leaves 1276 which, in use, deflect out of the
way to allow fluid to enter the refill port 1275. For example, an
end of a bottle may be inserted into the refill port 1275 by
deflecting the leaves 1276 generally downward which exposes an
opening to the reservoir 1272. In this respect, the leaves 1276
typically hinge about a periphery of the port 1275. After
refilling, the leaves 1276 return to a position which closes the
port 1275 thereby substantially preventing splash back or spillage.
In one example, the leaves 1275 may be rubber flaps.
[0168] In the example shown in FIG. 12, there is provided a fluid
reservoir 1370 including a refill port 1375 disposed through an
upper surface 1371 of the reservoir 1370 and covered by a plurality
of flexibly resilient leaves 1376 as previously described. In this
example, the refill port 1375 additionally includes a flip-top cap
1378 adapted to cover the refill port 1375 and flexible leaves
1376. The cap 1378 further reduces the likelihood of spillage or
splash back which is particularly useful when filling the reservoir
1370 with a sticky sports drink for example.
[0169] A further example of a fluid reservoir 1470 having a refill
port 1475 is provided in FIG. 13. In this example, the refill port
1475 includes a threaded inlet portion 1477 which is threadingly
engaged by a cap 1478. In this example, the cap 1478 includes a
plurality of flexibly resilient leaves 1476, which in use, cover
the refill port 1475 and operate in the same manner as previously
described.
[0170] In alternative arrangements, the flexibly resilient leaves
may be substituted with a permeable membrane or gauze like material
which allows fluid to enter the reservoir while minimising splash
back and spillage.
[0171] Whilst the previously described examples have included a
fluid reservoir provided in an upper surface of the top tube of the
frame, other arrangements are possible in which the fluid reservoir
forms part of the aerodynamic profile of the frame.
[0172] In another example, as shown in FIGS. 14A and 14B, a cycle
frame 1500 includes a through-opening 1504 that is formed
substantially through a top tube 1510 of the frame. The
through-opening 1504 is substantially elongate and extends from a
first side of the top tube to a second side of the top tube so as
to form an aperture, window or slot.
[0173] In this arrangement, the through-opening 1504 divides the
top tube 1510 into an upper section 1513 and a lower section 1514,
respectively above and below the through-opening 1504. A fluid
reservoir 1570 that is shaped to conform with the profile of the
through-opening 1504 is mounted within the through-opening 1504 as
shown in FIG. 14B so as to be within the aerodynamic profile of the
frame. The reservoir 1570 may be fitted into the through-opening
1504 from either side of the frame 1500.
[0174] A potential advantage of the design shown in FIGS. 14A and
14B is that the top tube 1510 can be made lighter and stronger. The
upper and lower sections 1513, 1514 of the top tube 1510 provide a
higher section modulus compared to an enclosed tubular structure
without the through-opening.
[0175] In a further example, a fluid reservoir 1670 is positioned
underneath the top tube 1610 of a cycle frame 1600 as shown in
FIGS. 15A and 15B. In this example, a lower surface of the top tube
1610 may include a reservoir recess 1611 and a fluid reservoir 1670
may be shaped to conform with the recess 1611 and be mounted
therein. The profile of the reservoir recess 1611 and fluid
reservoir 1670 may take several forms. In the example shown, the
recess 1611 follows the contour of the frame 1600 along the top
tube 1610 and partway down the connecting portion or seat tube
1620. In other arrangements, the recess 1611 may be substantially
in the top tube 1610 only or alternatively may extend further down
the connecting portion 1620.
[0176] In one example, the fluid reservoir 1670 may extend down the
connecting portion 1620 so as to form the leading edge of the
connecting portion or seat tube 1620 which splits air ahead of the
rear wheel. In such an example, the fluid reservoir 1670 would form
a critical aerodynamic portion of the connecting portion or seat
tube 1620.
[0177] Referring now to FIG. 16A, there is shown another example of
a cycle frame 1700 including a top tube 1710 including a recessed
section having a longitudinally extending web. The web may extend
substantially centrally as shown in FIG. 16B, be offset as shown in
FIG. 16D or form a side wall of the top tube as shown in FIG.
16F.
[0178] In the example shown in FIG. 16B, the web 1712 is centrally
extending so as to form two substantially symmetrical recesses
1714, 1715. Recesses 1714, 1715 may be used to mount fluid
reservoirs 1770, 1771 as shown in FIG. 16C. Whilst typically
reservoirs 1770, 1771 may both hold water, in other examples each
reservoir may hold a different fluid. For example, one reservoir
may hold water whilst the other one holds a sports drink. Similar
to the design shown in FIG. 14A, the top tube 1710 comprising an
upper segment 1711, lower segment 1713 and web 1712 (similar to an
I-beam section) provides a structure with increased stiffness and
strength and lower weight compared to an enclosed tubular
structure.
[0179] In the example shown in FIGS. 16D and 16E, the web 1712 is
offset relative to the centre of the top tube 1710 so that
asymmetrical recesses 1714.1, 1715.1 are formed for locating fluid
reservoirs 1770.1, 1771.1 of different shapes and volume.
[0180] In a further example as shown in FIGS. 16F and 16G, the web
1712 forms part of a lateral side of the top tube 1710 which
creates a single recess 1714.2 for locating a fluid reservoir 1770
that has a larger volume than the reservoirs provided in FIGS. 16C
and 16E.
[0181] Now referring to FIGS. 17A and 17B, there is shown a further
example of a cycle frame 1800 having an integrated fluid reservoir
1970 removably mounted within the top tube 1801. In this example,
the top tube 1801 of a V-frame cycle, such as manufactured by
Dimond.TM., is modified so as to form a reservoir recess 1911. The
fluid reservoir 1970 is shaped so that the fluid reservoir 1970 and
top tube 1801 cooperate to define an aerodynamic profile. By
providing the fluid reservoir in the top tube, a rider is able to
easily access the reservoir during a race without needing to reach
an excessive amount which may prove difficult in race situations
with more conventional bottle arrangements.
[0182] In this example, the reservoir 1970 is provided in an upper
surface of the top tube 1801, so that the upper surface 1971 of the
reservoir 1970 forms at least part of an upper surface of the top
tube 1801. In this example, the reservoir recess is shaped so as to
accommodate the fluid reservoir having a sump located towards the
seat mounting end of the top tube.
[0183] A fluid reservoir may be integrated into the top tube in
many ways including for example as shown in FIGS. 18-20.
[0184] In FIG. 18, there is shown a cycle frame 2000 including a
top tube 2001 having a reservoir recess 2111 located in an upper
surface thereof, the recess shaped to accommodate a fluid reservoir
2170 having a sump located towards a head end of the frame.
[0185] A further example of a cycle frame 2100 including a modified
top tube is shown in FIG. 19. In this example, the frame 2100
includes a through-opening 2104 that is formed substantially
through a top tube 2101 of the frame. The through-opening 2104 is
substantially elongate and extends from a first lateral side of the
top tube to a second lateral side of the top tube so as to form an
aperture, window or slot similar to that described with respect to
FIGS. 14 and 14B. In use, a fluid reservoir (not shown) is adapted
to be mounted within the through-opening so as to be within the
aerodynamic profile of the top tube of the frame. The reservoir may
be fitted into the through-opening from either side of the
frame.
[0186] In alternative arrangements, a longitudinally extending web
may be formed in the opening so as to form one or more recessed
sections in the top tube, similar to the arrangements described
with respect to FIGS. 16A to 16G. In one example, a first reservoir
recess is provided in a first lateral side surface of the top tube
and a second reservoir recess is provided in a second lateral side
surface of the top tube, wherein the first and second reservoir
recesses are separated by a longitudinally extending web and first
and second fluid reservoirs are removably mounted within the first
and second reservoir recesses in use.
[0187] In FIG. 20, there is shown an example of a cycle frame 2200
having a fluid reservoir 2370 that is positioned underneath the top
tube 2201 of a cycle frame 2200. In this example, a lower surface
of the top tube 2201 includes a reservoir recess 2311 and a fluid
reservoir 2370 is shaped to conform with the recess 2311 and be
mounted therein. As shown in FIG. 20, the body of the fluid
reservoir is shaped so that the fluid reservoir and at least part
of the top tube cooperate to define an aerodynamic profile.
[0188] From the previously described examples, it will be
appreciated that it is advantageous to provide a fluid reservoir
for a cycle frame, the cycle frame including a top tube extending
from a head end to a seat mounting, the fluid reservoir including a
body defining a cavity for containing a fluid, the body positioned
in abutment with at least a part of the top tube in use, and
wherein the body is shaped so that the fluid reservoir and the at
least a part of the top tube cooperate to define an aerodynamic
profile. Provision of the fluid reservoir within an aerodynamic
profile of the top tube is particularly advantageous due to the
proximity of the reservoir to the rider enabling fluid to be easily
drawn to keep the rider properly hydrated in training or race
scenarios.
[0189] Throughout this specification and claims which follow,
unless the context requires otherwise, the word "comprise", and
variations such as "comprises" or "comprising", will be understood
to imply the inclusion of a stated integer or group of integers or
steps but not the exclusion of any other integer or group of
integers.
[0190] Persons skilled in the art will appreciate that numerous
variations and modifications will become apparent. All such
variations and modifications which become apparent to persons
skilled in the art, should be considered to fall within the spirit
and scope that the invention broadly appearing before
described.
* * * * *