Source: https://brevets-patents.ic.gc.ca/opic-cipo/cpd/eng/patent/2731528/summary.html
Timestamp: 2020-06-01 17:18:00
Document Index: 764797016

Matched Legal Cases: ['art 2118', 'art 2118', 'art 2120', 'art 2118', 'art 2118', 'art 2120', 'art 2120', 'art 2118', 'art 2120', 'art 2118', 'art 2120', 'art 2120']

Patent 2731528 Summary - Canadian Patents Database
Canadian Patents Database / Patent 2731528 Summary
(11) CA 2731528
BOITE DE VITESSES A RAPPORTS VARIABLES DE FACON CONTINUE
B62M 11/12 (2006.01)
F16H 15/26 (2006.01)
MOTION TECHNOLOGIES, LLC (United States of America)
60/062,620 United States of America 1997-10-22
60/070,044 United States of America 1997-12-30
09/133,284 United States of America 1998-08-12
A continuously variable transmission having a plurality of power adjusters for transmitting power from a driving member to a driven member. Each power adjuster is frictionally interposed between the driving member, the driven member, and a support member. Also provided is a shifting apparatus for a transmission comprising a spindle; a pivot ring having two positioners for receiving the spindle; a pivot leg that attaches to the pivot ring; and a ratio changer adapted to engage the pivot leg.
Transmission à variation continue comportant un certain nombre d'organes de réglage de puissance permettant de transmettre la puissance d'un élément d'entraînement vers un organe mené. Chaque organe de réglage de puissance est interposé par friction entre l'élément d'entraînement, l'organe mené et un élément de support. L'invention concerne également un appareil de changement de vitesse conçu pour une transmission comprenant une tige poussoir, un anneau pivot ayant deux positionneurs pouvant accueillir la tige poussoir, une patte pivot qui se rattache à l'anneau pivot et un dispositif de changement de rapport adapté pour entraîner la patte pivot.
1. A shifting apparatus for a transmission having a plurality of spherical
adjusters arranged angularly about a longitudinal axis, the apparatus
a spindle arranged in a central bore of each spherical power adjuster;
a pivot ring having two positioners for receiving each spindle;
a plurality of pivot legs that attach to the pivot ring;
a ratio changer adapted to engage each pivot leg; and
a shifting member coupled to the ratio changer, the shifting member
positioned radially inward of the ratio changer and the pivot legs, the
member co-linear with the longitudinal axis of the transmission.
2. The shifting apparatus of claim 1, wherein the shifting member causes
ratio changer to move along the longitudinal axis of the transmission.
3. The shifting apparatus of claims 1 or 2, further comprising a linkage
couples one of the plurality of pivot legs attached to the pivot ring with the
ratio changer.
4. The shifting apparatus of claim 1, 2 or 3, wherein the ratio changer
a platform and a plurality of legs.
CA 02731528 2011-02-11
The field of the invention relates to transmissions. More particularly the
relates to continuously variable transmissions.
In order to provide an infinitely variable transmission, various traction
transmissions in which power is transmitted through traction rollers supported
in a housing
between torque input and output disks have been developed. In such
engagement of traction rollers with the torque disks in circles of varying
However, the success of these traditional solutions have been limited. For
example, in U.S. Patent No. 5,236,403 to Schievelbusch, a driving hub for a
variable adjustable transmission ratio is disclosed. Schievelbusch teaches the
use of two
iris plates, one on each side of the traction rollers, to tilt the axis of
rotation of each of the
rollers. However, the use of iris plates can be very complicated due to the
parts which are required to adjust the iris plates during shifting the
transmission. Another
limitation of this design is that it requires the use of two half axles, one
rollers, to provide a gap in the middle of the two half axles. The gap is
the rollers are shifted with rotating motion instead of sliding linear motion.
axles is not desirable and requires a complex fastening system to prevent the
axles from
bending when the transmission is accidentally bumped, is as often the case
transmission is employed in a vehicle. Yet another limitation of this design
not provide for an automatic transmission.
Therefore, there is a need for a continuously variable transmission having a
shifting method and a single axle. Additionally, there is a need for an
roller trancmission which is configured to shift automatically. Further, the
commercialization of traction roller transmissions requires improvements in
ease of shifting, function and simplicity of the transmission.
The present invention includes a transmission for use in rotationally or
powered machines and vehicles. For example the present transmission may be
vehicles such as automobiles, motorcycles, and bicycles. The transmission may,
example, be driven by a power transfer mechanism such as a sprocket, gear,
pulley or lever,
optionally driving a one way clutch attached at one end of the main shaft.
One version of the invention includes a transmission comprising a shaft, a
driving member rotatably mounted on the shaft, a rotatable driven member
mounted on the shaft, a plurality of power adjusters frictionally interposed
rotatable driving member and the rotatable driven member and adapted to
from the driving member to the driven member, and a rotatable support member
concentrically over the shaft and between the shaft and the power adjusters,
and frictionally
engaged to the plurality of power adjusters, so that the power adjusters each
point frictional contact against the driving member, the driven member, and
Yet another version of the invention includes a shall, a rotatable driving
rotatably mounted on the shaft, a rotatable driven member rotatably mounted on
the shaft, a
plurality of power adjusters frictionally interposed between the rotatable
and the rotatable driven member and adapted to transmit power from the driving
to the driven member, a rotatable support member located concentrically over
between the shaft and the power adjusters, and frictionally engaged to the
power adjusters, so that the power adjusters each make three point frictional
against the driving member, the driven member, and the support member, and at
outwardly extendible weight coupled to the plurality of power adjusters and
affixed to the shaft, the at least one weight adapted to actuate a change in
an axis of
rotation of the plurality of power adjusters.
CA 02731528 2013-03-25
Various embodiments of this invention provide a transmission comprising: a
member rotatably mounted on a shaft; a driven member rotatably mounted on the
shaft; a support
member rotatably mounted on the shaft between the driving member and the
driven member; a
plurality of power adjusters in frictional contact with each of the driving
member, the driven
member, and the support member; and a plurality of pivot supports that receive
power adjusters, wherein each pivot support has a pivot ring attached to at
shaft; a plurality
of power adjusters frictionally interposed between the driving member and the
driven member and
adapted to transmit power from the driving member to the driven member; a
frictionally engaged to the plurality of power adjusters, so that the power
adjusters each make three
the support member;
and at least one stationary support anchoring the power adjusters to a non-
moving component of the
transmission to prevent orbiting of the power adjusters about the shaft.
member; a driven member; a plurality of power adjusters frictionally
interposed between the driving
member and the driven member and adapted to transmit power from the driving
driven member; a support member frictionally engaged to the plurality of power
adjusters, so that
the power adjusters each make three point frictional contact against the
driving member, the driven
members, and the support member; a first compression member adapted to direct
member toward the driven member; a second compression member adapted to direct
member toward the driving member; a plurality of spindles, one spindle for
each of the power
adjusters, each spindle defining an axis of rotation for each of the power
adjusters and adapted to
modify an axis of rotation of the power adjusters; and at least one stationary
support preventing the
power adjusters from orbiting about a longitudinal axis of the transmission.
Various embodiments of this invention provide a continuously variable
comprising: a driving member; a driven member; a plurality of power adjusters
interposed between the driving member and the driven member; a plurality of
adapted for altering the axes of rotation of the power adjusters; a support
member mounted so that
each power adjuster makes three point contact with the support member, the
driving member, and
the driven member, and wherein the support member slides axially in response
to an adjustment of
an axis of rotation of the power adjusters; a first plurality of rollers
positioned adjacent to the
driving member, the first plurality of rollers enabling the force applied to
the power adjusters to be
increased via the driving member as torque is increased; a second plurality of
rollers positioned
adjacent to the driven member, the second plurality of rollers enabling the
power adjusters to be increased via the driven member as torque is increased;
stationary support attached to an immovable surface, the at least one
stationary support preventing
the orbiting of the power adjusters about a longitudinal axis of the
Various embodiments of this invention provide a shifting apparatus for a
transmission, the
apparatus comprising: a spindle; a pivot ring having two positioners for
receiving the spindle; a
pivot leg that attaches to the pivot ring; and a ratio changer adapted to
engage the pivot leg.
spherical power adjusters, each power adjuster having a central bore; a
plurality of spindles, one
spindle for each power adjuster, wherein said spindle is placed in the central
bore and extends
beyond the ends of the central bore, and wherein said spindle provides an axis
of rotation for the
spherical power adjuster; and a plurality of legs, at least two legs per
spindle, configured to tilt the
bore and provides an
axis of rotation for the spherical power adjuster; and a rotatable support
member radially inward of,
and in contact with, the spherical power adjusters, wherein the support member
move axially in unison with a tilting of the plurality of spindles.
shaft; a
driving member rotatably mounted on the shaft; a driven member rotatably
mounted on the shaft,
wherein the shaft extends through the driving member and the driven member; a
adjusters interposed between the driving member and the driven member and
adapted to transmit
power from the driving member to the driven member; a support member in
plurality of power adjusters, so that the power adjusters each make three
point contact against the
driving member, the driven member, and the support member; and a shifting
member positioned in
a hollow portion of the shaft, wherein the shifting member is configured to
actuate an adjustment in
the axial position of the support member.
Various embodiments of this invention provide a method of shifting a
transmission, the method comprising: providing a spherical power adjuster
spindle, the spindle defining an axis of rotation for the spherical power
adjuster; providing at least
one leg configured to adjust a tilting of the spindle; and actuating the leg
to adjust the tilting of the
adjuster; tilting the spindle
to cause an adjustment in the axis of rotation of the spherical power
adjuster; and moving a support
member axially in unison with the tilting of the spindle, wherein the support
member is rotatable, in
contact with the spherical power adjuster, and is placed radially inward of
the spherical power
adjuster relative to a longitudinal axis of the transmission.
comprising: a shaft; a rotatable driving member rotatably mounted over the
shaft; a rotatable driven
member rotatably mounted over the shaft; a plurality of spherical power
adjusters in contact with
the rotatable driving member and the rotatable driven member and adapted to
transmit power from
the rotatable driving member to the rotatable driven member, each power
adjuster having a hole
extending through its center; a plurality of spindles, each spindle positioned
in a respective hole of a
power adjuster; a rotatable support member radially inward of, and in contact
with, the spherical
power adjusters whereby each spherical power adjuster is in contact with the
driving member, the
driven member, and the rotatable support member; a first annular bearing in
support member; a second annular bearing in contact with the support member;
legs connected to the plurality of spindles.
comprising: a rotatable driving member; a plurality of spherical power
adjusters, each power
adjuster having a hole extending through its center; a plurality of spindles,
each spindle positioned
in the hole of a respective power adjuster; a rotatable support member located
and in contact with, the plurality of spherical power adjusters, wherein the
member has a substantially uniform outer diameter, wherein the rotatable
support member is
capable of axial movement, and wherein the rotatable support member has
bearing surfaces to
facilitate control of axial movement of the rotatable support member; a first
annular bearing capable
of axial movement and in contact with the support member; a second annular
bearing capable of
axial movement and in contact with the support member; a first planar platform
capable of axial
movement and in contact with the first annular bearing; a second planar
platform capable of axial
movement and in contact with the second annular bearing; a shifting member
having an end that
extends outside of the transmission, positioned along the axis of the
rotatable support member, and
operably engaged with the rotatable support member; and wherein an adjustment
the shifting member causes an axial movement of the rotatable support member,
the first annular
bearing, the second annular bearing, the first planar platform, and the second
planar platform.
Various embodiments of this invention provide a mechanism for shifting a
variable transmission, the mechanism comprising: a plurality of spherical
power adjusters, each
spherical power adjuster having a through central bore; a plurality of
spindles, one spindle for each
spherical power adjuster, wherein the spindle is placed in the central bore
and provides an axis of
rotation for a respective spherical power adjuster; at least two legs per
spindle, each spindle coupled
to a respective at least two legs, wherein the at least two legs are
configured to tilt the respective
spindle; a rotatable support member located radially inward of, and in contact
power adjusters; wherein an axial movement of the rotatable support member is
in unison with an
actuation of the legs and in unison with a tilting of the spindles.
comprising: a plurality of spherical power adjusters, each spherical power
adjuster having a central
bore; a plurality of spindles, each spindle corresponding to a spherical power
adjuster, said spindle
placed in the central bore and configured to provide an axis of rotation for
adjuster; a rotatable driving ring in contact with the spherical power
adjusters; a rotatable driven
ring in contact with the spherical power adjusters; a rotatable support member
in contact with, and
located radially inward of, the spherical power adjusters; means for tilting
the spindles; means for
moving axially the rotatable support member; and wherein the means for tilting
and the means for
moving are configured such that the tilting of the spindles is in unison with
the moving axially of
the rotatable support member.
having a plurality of spherical power adjusters arranged angularly about a
longitudinal axis, the
apparatus comprising: a spindle arranged in a central bore of each spherical
power adjuster; a pivot
ring having two positioners for receiving each spindle; a plurality of pivot
legs that attach to the
pivot ring; a ratio changer adapted to engage each pivot leg; and a shifting
member coupled to the
ratio changer, the shifting member positioned radially inward of the ratio
changer and the pivot
legs, the shifting member co-linear with the longitudinal axis of the
Figure 1 is a partial perspective view of the transmission of the present
Figure 2 is a partial exploded view of the transmission of Figure 1.
Figure 3 is an end cutaway elevational view of the transmission of Figure 1.
Figure 4 is a cutaway side elevational view of the transmission of Figure 1.
Figures 5 and 6 are cutaway side elevational views of the transmission of
illustrating the transmission of Figure 1 shifted into different positions.
Figure 7 is an end cutaway view of an alternative embodiment of the
of the invention wherein the transmission shifts automatically.
Figure 8 is a side elevational view of the transmission of Figure 7.
Figure 9 is an end cutaway view of an alternative embodiment of the
of the invention wherein the transmission includes a stationary hub shell.
Figure 10 is a cutaway side elevational view of the transmission of Figure 9.
Figure 11 is a cutaway side elevational view of an alternative embodiment of
transmission of Figure 1 wherein the transmission has two thrust bearings.
Figure 12 is a cutaway side elevational view of an alternative embodiment of
invention wherein a first and second one way rotatable driver provides an
input torque to
Figure 13 is a schematic cutaway end elevational view of another alternative
embodiment of the transmission of the invention.
Figure 14 is a schematic cutaway front elevational view of the transmission of
Figure 15 is a schematic end view of a housing for the transmission of Figures
Figure 16 is a schematic cutaway front elevational view of another alternative
Figure 17 is a side elevational view of an alternative embodiment of a support
Figure 18 is a side elevational view of an alternative embodiment of a support
Figure 19 is a side elevational view of an alternative embodiment of a support
Figure 20 is a schematic cutaway side elevational view of an alternative
embodiment of the invention including: a thrust bearing, a washer, and a
tension member.
Figure 21 is a schematic cutaway side elevational view of an alternative
embodiment of the invention wherein the support member has at each end a
washer, and the pivot supports have legs.
Figure 22 is a front elevational view of a washer of the transmission of
Figure 23 is a side elevational view of a pivot support of the transmission of
Figure 24 is a bottom plan view of a pivot support of the transmission of
Figure 25 is a front elevational view of an alternative embodiment of a
Figure 26 is a cutaway side elevational view of the stationary support of
Figure 27 is a front elevational view of an alternative embodiment of a
Figure 28 is a cutaway side elevational view of the stationary support of
Figure 29 is a partial top plan view of the stationary support of Figure 27.
Figure 30 is a front elevational view of an alternative embodiment of a
Figure 31 is a cutaway side elevational view of the stationary support of
Figure 32 is a cutaway side elevational view of an alternative embodiment of
main shaft of Figure 2.
Figure 33 is a cutaway end elevational view of the shaft of Figure 32.
Figure 34 is a schematic cutaway front elevational view of an alternative
Figure 35 is a schematic cutaway side elevational view of an alternative
embodiment of the transmission that shifts automatically.
Figure 36 is a schematic cutaway end elevational view of the annular bearing
depicted in Figure 35.
Figure 37 is a schematic cutaway side elevational view of an alternative
embodiment of the invention having a coasting mechanism.
Figure 38 is a front elevational view of the alternative coasting mechanism of
The following detailed description is directed to certain specific embodiments
invention. However, the invention can be embodied in a multitude of different
defined and covered by the claims. In this description, reference is made to
wherein like parts are designated with like numerals throughout.
The present invention includes a continuously variable transmission that may
employed in connection with any type of machine that is in need of a
transmission. For
example, the transmission may be used in (i) a motorized vehicle such as an
motorcycle, or watercraft, (ii) a non-motorized vehicle such as a bicycle,
tricycle, scooter,
exercise equipment or (iii) industrial power equipment, such as a drill press
generating equipment, such as a windmill.
Figures 1 through 4 disclose one embodiment of the present invention. Figure 1
a partial perspective view of a transmission 100. Figure 2 is an exploded view
transmission 100 of Figure 1. Figure 3 shows a partial cross sectional end
transmission 100. Figure 4 shows a cutaway side elevational view of the
Referring generally to Figures 1 through 4, a hollow main shaft 102 is affixed
frame of a machine (not shown). The shaft 102 may be threaded at each end to
fastener (not shown) to be used to secure the transmission 100 on the main
shaft- 102
and/or to attach the main shaft 102 to a machine. A rotatable driver 401
comprising a sprocket or a pulley is rotatably affixed to the main shaft 102,
an input torque to the transmission 100. A drive sleeve 104 is coaxially
= rotatable driver 401 (Figure 4) and rotatably disposed over the main
shaft 102. A surface
= 106 (Figure 2) of the drive sleeve 104 opposite the rotatable driver 401
(Figure 4), can
include a plurality of shallow grooves 108.
A first roller cage assembly 110 is coaxially coupled to the drive sleeve 106
opposite the rotatable driver 401 and also rotatably disposed over the main
shaft 102. The
first roller cage assembly 110 has a plurality of cylindrical rollers 112
about a midpoint of the roller cage assembly 110. Each of the cylindrical
rollers 112 are
rotatably mounted on the first roller cage assembly 110 such that each of the
rollers may
rotate about its lengthwise axis. Preferably, a one-to-one correlation exists
the shallow grooves 108 and each of the cylindrical rollers 112. Optionally,
rollers 112 may be replaced with rollers of an alternative geometric shape,
spherical rollers.
A tension inducer 118 (Figure 2), such as a spring, is rotatably disposed over
main shaft 102 and frictionally coaxially coupled to the first roller cage
assembly 110
opposite to the drive sleeve 104; Further, a rotatable driving member 120 is
affixed to the main shaft 102 and coaxially coupled to a side of the first
110 opposite the drive sleeve 104. A surface 107 (Figure 4) of the rotatable
member 120 opposed to the drive sleeve 104 includes a plurality of shallow
grooves 109
(Figure 4). Relative rotation of the roller cage 110 with respect to the drive
causes the cylindrical rollers 112 to roll on the shallow grooves 108, 109 and
shallow grooves 108, 109 toward or away from each other along the axis of the
A plurality of spherical power adjusters 122A, 122B, 122C are in frictional
with a side of the rotatable driving member 120 opposite the roller cage
assembly 110. In
one embodiment of the invention, the power adjusters 122A, 122B, 122C are
spheres made
of hardened steel; however, the power adjusters 122A, 122B, 122C may
include other shapes and be manufactured from other materials. A plurality of
130A, 1 30B, 130C (Figure 2) respectively extend through multiple passages
128A, 128B,
128C (Figure 2) in the power adjusters 122A, 122B, 122C. Radial bearings (not
may be disposed over each of the spindles 130A, 130B, 130C (Figure 2) to
rotation of the power adjusters 122A, 122B, 122C.
A plurality of pivot supports 134A, 134B, 134C respectively hold the spindles
130A, 130B, 130C (Figure 2). The support 134A includes two legs 135A and 137A
connection to a ratio changer 166 which is discussed in further detail below.
support 134B includes two legs 135B and 137B, and the pivot support 134C
legs 135C and 137C.
The pivot supports 134A, 134B, 134C respectively include pivot rings 136A,
136B, 136C. The pivot ring 136A has four apertures 138A, 140A, 142A, 144A
Similarly, the pivot support 134B has four apertures I38B, 140B, 142B, and
144B, and
the pivot support 134C has four apertures 138C, 140C, 142C, and 144C (Figure
apertures 138A, 138B, 138C are respectively located opposite to the apertures
140B, 140C on the pivot rings 136A, 136B, and 136C. Together, the apertures
138A,
138B, 138C, and the apertures 140A, 140B, 140C are respectively configured to
the spindles 130A, 130B, 130C (Figure 2).
The apertures 142A, 142B, 142C (Figure 2) are respectively located opposite to
the apertures 144A, 144B, 144C (Figure 2) on the pivot rings 136A, 136B, 136C.
Together, the apertures 142A, 142B, I42C and the apertures 144A, 1448, 144C
configured to receive multiple immobilizers 150A, 150B, 150C (Figure 2). In
embodiment of the invention, the immobilizers 150A, 150B, 150C are each
cylindrical rigid
rods, slightly angled at each end. A central portion of each of the
immobilizers 150A,
150B, 150C are affixed to one of multiple legs 153 (Figure 2) of a stationary
(Figure 2). The stationary support 152 is fixedly attached to the main shaft
A support member 154 is sfidingly and rotatably disposed over the main shaft
proximate to a side of the stationary support 152 (Figure 2) which is opposite
rotatable driving member 120. The support member 154 is in frictional contact
of the power adjusters 122A, 122B, 122C. In one embodiment of the invention,
support member 154 is a cylindrical ring having a substantially uniform outer
from an end cross-sectional view. In another embodiment of the invention, the
member 154 is a cylindrical ring having a first and second flange (not shown)
respectively extend radially outwardly from a first and second end of the
154 so as to prevent the power adjusters 122A, 122B, 122C from disengaging
support member 154. In yet another embodiment of the invention, the support
154 is a cylindrical ring having a nominally concave outer surface (Figure
The support member 154 may contact and rotate upon the main shaft 102, or may
be suspended over the main shaft 102 without substantially contacting it due
centering pressures applied by the power adjusters 122A, 122B, 122C.
Referring in particular to Figure 2, a shifting member 160, such as an
inflexible rod,
is slidingly engaged to an inner passage of the. main shaft 102. Two
extensions 162, 164
perpendicularly extend from the shifting member 160 through an opening 165 in
shaft 102. A first end 161 of the shifting member 160 proximate to the drive
transmission 100 is connected to a linkage 163, such as a cable. The linkage
163 is
connected at an end opposite to the main shaft 102 to a shifting actuator (not
tension member 202, such as.a spring, is connected to a second end of the
160 by a fastener 204.
Still referring in particular to Figure 2, the extensions 162, 164 connect to
changer 166. The ratio changer 166 includes a planar platform 168 and a
171A, 171B, 171C which perpendicularly extend from a surface of the platform
proximate to the support member 154. The leg 171A includes two linkage pins
173A. Similarly, the leg I71B includes two linkage pins 172B and 173B, and the
includes two linkage pins 172C and 173C. The linkage pins 172A, 172B, 172C,
linkage pins 173A, 173B, 173C are used to couple the ratio changer 166 to each
pivot supports 134A, 134B, and 134C.
in regard to the coupling of the support 134A and the ratio changer 166, the
linkage pin 172A engages an end of the leg 137A of the support 134A opposite
ring 13 6A, and the linkage pin 172B engages an end of the leg 135A opposite
ring 136A. Further, in regard to the coupling between the pivot support 134B
changer 166, the linkage pin 173B engages an end of the leg 137B opposite the
136B, and the linkage pin 172C engages an end of the leg 135B opposite the
136B. Finally, in regard to the coupling between the pivot support 134C and
changer 166, the linkage pin 173C engages an end of the leg 137C opposite the
136C, and the linkage pin 173A engages an end of the leg 137B opposite the
Although only three power adjusters 122A, 122B, 122C are disclosed, the
transmission 100 of the invention may be configured with fewer (e.g., 2) or
more (e.g., 4, 5,
6 or more) power adjusters. Further, the number of legs on the ratio changer
166, the
number of legs on the stationary support 152, the number of immobilizers, the
pivot supports in the transmission may all be correspondingly adjusted
number of power adjusters that are employed.
Referring again in general to Figures 1-4, a rotatable driven member 170 is
rotatably engaged to the main shaft 102 proximate to the ratio changer 166
rotatable driven member 170 is in frictional contact with each of the power
adjusters 122A,
122B, 122C. A surface 174 of the rotatable driven member 170 opposite the
adjusters 122A, 122B, 122C, includes a plurality of shallow grooves 176. The
driven member 170 is in frictional coaxial contact with a second tension
inducer 178
(Figure 2), such as a spring, and a second roller cage assembly 180 that is
to the roller cage assembly 110. The second tension inducer 178 (Figure 2) and
roller cage assembly 180 are rotatably disposed over the main shaft 102. A hub
(Figure 4) is rotatably disposed over the main shaft 102 and coaxially engaged
to a side of
the second roller cage assembly 180 opposite the rotatable driven member 170.
driver 186 (Figure 4) may be affixed to a hub shell 302 (Figures 3 and 4)
traditional gearing mechanism. In one embodiment of the invention, the hub
extends proximate to the hub shell 302 and is connected to a one way rotatable
driver 300,
such as a one way roller clutch. The one way rotatable driver 300 (Figures 3
and 4) is
rotatably coupled to the hub shell 302 (Figures 3 and 4).
Note that the power adjusters 122A, 122B, 122C are suspended in tight three-
frictional contact with the drive member 120, the support member 154, and the
The hub shell 302 (Figures 3 and 4) has a plurality of holes 304 (Figure 3)
provide a means for attaching the hub shell 302 to a wheel, propeller or other
means. The hub shell 302 is supported and is free to rotate on the main shaft
102 by means
of hub bearings 410 (Figure 4) which fit into slots in the hub driver 186. A
washer 412
(Figure 4) is affixed to the main shaft 102 proximate to a side of the hub
opposite the second roller cage assembly 180 to facilitate the rotation of the
410 (Figure 4).
Figures 5 and 6 are a cutaway side elevational views of the transmission of
illustrating the transmission of Figure 1 in two different shifted positions.
Figures 5 and 6, a method of shifting the transmission 100 is disclosed below.
Upon an input force, the drive sleeve 104 begins to rotate in a clockwise
(It should be noted that the transmission 100 is also designed to be driven in
clockwise direction.) At the beginning of the rotation of the drive sleeve
104, nominal axial
pressure is supplied by the tension inducers 118, 178 (Figure 2) to ensure
that the rotatable
driving member 120, the rotatable driven member 170, and the support member
154 are in
tractive contact with the power adjusters 122A, 122B, 122C.
The rotation of the drive sleeve 104 in a clockwise direction engages the
cage assembly 110 to rotate in a similar direction. At a low torque, the
rollers 112 remain
centered between the shallow grooves 108, 109 of the rotatable driving member
the drive sleeve 104. As additional torque is applied, the rollers 112 ride up
sides of the grooves 108 and force the drive sleeve 104 and the rotatable
120 farther apart. The same action occurs on the opposite end of the
wherein the rotatable driven member 170 engages the hub driver 186 though the
roller cage assembly 180. Thus, the first roller cage assembly 110 and second
assembly 180 compress the rotatable driving member 120 and the rotatable
170 together against the power adjusters 122A, 122B, 122C, which increases the
contact of the power adjusters 122A, 122B, 122C against the support member
154, the
drive member 120, and the driven member 170.
As the first rotatable driving member 120 is rotated in a clockwise direction
roller cage assembly 110, the first rotatable driving member 120 frictionally
power adjusters 122A, 122B, 122C. The clockwise rotation of the power
122B, 122C causes a clockwise rotation of the rotatable driven member 170. The
clockwise rotation of the rotatable driven member 170 engages the second
assembly 180 to rotate in a clockwise direction. In turn, the clockwise
second roller cage assembly 180 engages the hub driver 186 (Figure 4) to drive
clockwise direction. The clockwise rotation of the hub driver 186 causes the
rotatable driver 300 to rotate clockwise. The one way rotatable driver 300
then drives the
hub shell 302 (Figures 3 and 4) to rotate in a clockwise direction.
The shifting member 160 is used fo modify the axis of a rotation for the power
adjusters 122A, 122B, 122C. To shift the transmission 100, the shifting
actuator (not
shown) slides the shifting member 160 in a first direction 500 (Figure 5). A
tension of the linkage 163 by the shifting actuator (not shown) causes the
160 to slide in a second and opposite direction 600 (Figure 6) by the tension
member 202.
The particular construction of the present transmission 100 provides for much
shifting than prior art traction roller designs.
When the shifting member 160 is moved in either direction by a user, the
162, 164 engage the ratio changer 166 to axially move across the main shaft
Referring to Figure 5, when the shifting member 160 is moved, the ratio
changer 166 pivots
the supports 134A, 134B, 134C. The pivoting of the supports 134A, 134B, 134C
ball spindles 130A, 130B, 130C and changes the axis of rotation of each of the
adjusters 122A, 122B, and 122C. When the shifting member 160 is moved in the
500, the axis of rotation of each of the power adjusters I22A, 122B, 122C is
modified such
that the rotatable driving member 120 contacts a surface of power adjuster,
120A, 120B,
120C closer to the axis of rotation of the power adjusters 120A, 120B, 120C.
rotatable driven member 170 contacts the power adjuster at a point on a
surface of the each
of the power adjusters 120A, 120B, 120C further away from the axis of rotation
power adjusters 120A, 120B, 120C. The adjustment of the axis of rotation for
adjusters 122A, 122B, 122C increases an output angular velocity for the
because for every revolution of the rotatable driving member 120, the
rotatable driven
member 170 rotates more than once.
Referring to Figure 6, the transmission 100 of the invention is shown in a
which causes a decrease in the output angular velocity for the transmission
100. As the
shifting member 160 is directed in the direction 600, opposite the first
direction 500, the
axis of rotation of each of the power adjusters 122A, 122B, 122C is modified
rotatable driven member 170 contacts a surface of each of the power adjusters
122A,
122B, 122C closer to the axis of rotation of each of the power adjusters 122A,
122B,
122C. Further, the rotatable driving member 120 contacts each of the power
122A, 122B, 122C at a point on a surface of each of the power adjusters 122A,
122C further away from the axis of rotation of each of the power adjusters
122A, 122B,
122C. The adjustment of the axis of rotation for the power adjusters 122A,
decreases an output angular velocity for the transmission 100 because for
of the rotatable driving member 120, the rotatable driven member 170 rotates
Figures 7 and 8 illustrate an automatic transmission 700 of the present
For purposes of simplicity of description, only the differences between the
of Figures 1-6 and the automatic transmission 700 are described. Figure 7 is a
elevational view of the transmission 700, and Figure 8 is partial side
elevational view of the
transmission 700.
A plurality of tension members 702A, 702B, 702C, which may each be a spring,
interconnect each of the pivot rings 136A, I36B, 136C. The tension member 702A
connected at a first end to the pivot ring 136A and at a second end opposite
the first end to
the pivot ring 136B. Further, the tension member 702B is connected at a first
pivot ring 136B proximate to the aperture 138B and at a second end opposite
to the pivot ring 136C proximate to the aperture 138C. Further, the tension
member 702C
is connected at a first end to the pivot ring 136C proximate to the aperture
138C and at a
second end opposite the first end to the pivot ring 136A proximate to the
aperture 138A.
The transmission 700 also includes flexible extension members 708A, 708B, 708C
respectively connected at a first end to the pivot rings 136A, 136B, 136C, The
transmission 700 also includes a first annular bearing 806 and a second
annular bearing 816
to assist in the shifting of the transmission 700. =The first annular bearing
806 is slidingly
attached to the hub shell 302 such that first the annular bearing 806 can
further be directed
toward the rotatable driving member 120 or the rotatable driven member 170.
annular bearing 816 also is configured to be slid toward either the rotatable
120 or the rotatable driven member 170; however, the second annular bearing
816 is not
rotatable about the main shaft 102, unlike the first annular bearing 806. The
bearing 806 and the second annular bearing 816 supports multiple bearing balls
808. A
second end of each of the extension members 708A, 708B, 708C connects to the
annular bearing 816 (Figure 8).
Multiple extension members 718A, 718B, 718C respectively connect the first
annular bearing 806 to multiple weights 720A, 720B, 720C. Optionally, a
pulleys 822 may be used to route the extension members 718A, 718B, 718C from
annular bearing 806 to the weights 720A, 720B, 720C, and route the extension
708A, 708B, 708C to the second annular bearing 816.
Still referring to Figures 7 and 8, a method of operation for the transmission
disclosed. Similar to the embodiment of the invention disclosed in Figure 1, a
input torque causes clockwise rotation of the drive sleeve 104, the first
110, and the rotatable driving member 120: The rotatable driving member 120
power adjusters 122A, 122B, 122C to rotate, and thereby drives the rotatable
member 170. The rotation of the rotatable driven member 170 drives the second
cage assembly 180 and produces an output torque.
However, to be distinguished from the transmission 100 illustrated in Figure
ratio of rotation between the rotatable driving member 120 and the rotatable
member 170 is adjusted automatically by a centrifugal outward movement of the
720A, 720B, 720C. As the weights 720A, 720B, 720C extend outwardly, the
718A, 7I8B, 718C pull the first annular bearing 806 toward the rotatable
120. The movement of the first annular bearing 806 toward the rotatable
120 similarly causes the movement of the bearings 808 and the second annular
bearing 816
toward the rotatable driving member 120.
The movement of the first annular bearing 806 toward the rotatable driving
120 causes the extension members 708A, 708B, 708C to respectively pivot the
306A, 306B, 306C and adjust the axis of rotation of each of the power
122B, 122C. After the adjustment, the rotatable driven member 170 contacts a
power adjusters 120A, 120B, 120C closer to the axis of rotation of each of the
adjuster 122A, 122B, 122C. Conversely, the rotatable driving member 120
power adjusters 122A, 122B, 122C at a point on a surface of the each of the
adjusters 122A, 122B, 122C further away from the axis of rotation of the power
122A, 122B, 122C. The adjustment of the axis of rotation for the power
122B, 122C decreases an output angular velocity for the transmission 100
every revolution of the rotatable driving member 120, the rotatable driven
rotates less than once. When the hub shell 302 rotates more slowly, the
members 702A, 702B, 702C adjust the axis of rotation of the power adjusters
122C to provide to a lower output angular velocity in comparison to the input
Figures 9 and 10 illustrate an alternative embodiment of the invention. For
purposes of simplicity of description, only the differences between the
transmission 100 of
Figures 1 and a transmission 900. of Figures 9 and 10 are described. Figure 9
end elevational view of the transmission 900, and Figure 10 is partial side
of the transmission 900.
The transmission 900 includes flexible extension members 908A, 908B, 908C
respectively connected at a first end to the pivot rings 136A, I36B, 136C. A
the extension members 908A, 9088, 908C connects to a synchronization member
Further each of the extension members 908A, 908B, 908C are sliding,ly engaged
plurality of pulleys 916 (Figure 9) which are affixed to the hub shell 302. It
is noted that
the number and location of the each of the pulleys 916 (Figure 9) may be
varied. For
example, a different pulley configuration may be used to route the extension
908A, 908B, 908C depending on the selected frame of the machine or vehicle
the transmission 900. Additionally, the pulleys 916 and extension members
908A, 908B,
908C may be located inside the hub shell 302.
The hub shell 302 of the transmission 900 is non-rotational. Further, the hub
302 includes a plurality of apertures (not shown) which are used to guide the
members 908A, 908B, 908C to the synchronization member 912.
To be noted, according to the embodiment of the invention illustrated in
and 10, the shifting assembly of the transmission 100 of Figure 2 may be
including the main shaft 102 (Figure 2), the tension member 202 (Figure 2),
162, 164 (Figure 2) and the shifting actuator (not shown).
Still referring to Figures 9 and 10, a method of operation for the
transmission 900 is
disclosed. Similar to the embodiment of the invention disclosed in Figure 1,
an input torque
causes a clockwise rotation of the drive sleeve 104, the first roller cage
assembly 110, and
the rotatable driving member 120. The rotatable driving member 120 engages the
adjusters 122k 122B, 122 to rotate, and thereby drive the rotatable driven
The rotation of the rotatable driven member 170 drives the second roller cage
assembly 180
and produces an output torque.
In the transmission 900, the ratio of rotation between the rotatable driving
120 and the rotatable driven member 170 is adjusted by the manipulation of the
synchronization member 912. As the synchronization member 912 is outwardly
from the hub shell 302, the extension members 908k 908B, 908C respectively
pivot the
pivot rings 136k 136B, 136C such that the axis of rotation of each of the
122k 122B, and 122C is similarly pivoted. The axis of rotation of each of the
adjusters 122k 122B, 122C is modified such that the rotatable driving member
contacts a surface of power adjusters 122A, 122B, 122C further away from the
rotation of each of the power adjusters 122A, 122B, 122C. Conversely, the
driven member 170 contacts the power adjusters 122A, 122B, 122C at a point on
surface of the each of the power adjusters 122A, I 22B, 122C closer to the
of each of the power adjusters 122A, 122B, 122C. The adjustment of the axis of
for the power adjusters 122A, 122B, 122C decreases an output angular velocity
transmission 100 because for every revolution of the rotatable driving member
120, the
rotatable driven member 170 rotates less than once.
When the synchronization member 912 is directed toward the hub shell 302, the
tension members 702A, 702B, 702C compress. This compression causes an end of
pivot rings 136A, 136B, 136C proximate to the rotatable driven member 170 to
toward the main shaft 102. The pivoting of the pivot rings 136A, I36B, 136C
axis of rotation of each of the power adjusters 122A, 122B, 122C to be
modified such that
the rotatable driven member 170 rotates slower than the rotatable driving
Figure 11 illustrates another alternative embodiment of the invention
transmission 1100 having a first thrust bearing 1106 and a second thrust
bearing 1108. The
first thrust bearing 1106 is rotatably disposed over the main shaft 102 and is
between the support member 154 and the extensions 162, 164. The second thrust
1108 is disposed over the main shaft 102 on a side of the support member 154
first thrust bearing 1106. The transmission 1100 may optionally also include a
changer, such as ratio changer 1110, which is disposed over the main shaft 102
axially slidable.
When the ratio changers 166, 1110 slide axially to cause a shift in the
1100, the ratio changers 166, 1110 also slide the thrust bearings 1106, 1108.
The sliding of
the thrust bearings 1106, 1108 forces the support member 154 to slide in
unison with the
ratio changers 166, 1110. A small amount of play is provided between the
154 and the thrust bearings 1106, 1008 so that the thrust bearings 1106, 1108
contact the support member 154 except when the transmission 1100 is in the
Figure 12 illustrates an alternative embodiment of the invention. Figure 12
illustrates a transmission 1200 that operates similarly to the embodiment of
disclosed in Figure 10; however, the transmission 1200 of Figure 12 includes
two rotatable
drivers 1204, 1206 and a rotatable driving shaft 1212. The rotatable driving
shaft 1212 is
fixedly attached to the drive sleeve 104.
Still referring to Figure 12; the first rotatable driver 1204 includes a one
1208 that is configured to rotate the rotatable driving shaft 1212 upon the
rotatable driver in a first direction. The second rotatable driver 1206
includes a one way
clutch 1210. The second rotatable driver 1206 is configured to engage the
drive sleeve 104
upon the rotation of the second rotatable driver 1206 in a second direction,
opposite to the activation direction of the first rotatable driver 1204. The
second rotatable
driver 1206 is fixedly attached to the drive sleeve 104.
Figure 13 schematically illustrates another alternative embodiment of the
having a transmission 1300 that is configured to shift automatically. Three
pulleys 1306,
1308, 13 10 are respectively connected to the pivot rings 136A, 136B, and
1360. A cable
1312 is guided around the pulley 1306 and connects at a first end to the main
shaft 102 and
.connects at a second end to an annular ring (not shown), similar to the
annular ring 816 of
Figure 8. Similarly, a cable 1314 is guided around the pulley 1308 and
main shaft 102 at a first end and connects at a second end to the annular ring
Lastly, a cable 1316 is guided around the pulley 1310 and connects at a first
main shaft 102 and connects at a second end to the annular ring (not shown).
Figure 14 schematically illustrates the transmission 1300 of Figure 13 from a
end. A plurality of tension members 1404, 1406, 1408 interconnect each of the
136A, 136B, and 136C. The tension member 1404 connects at a first end to the
136A and connects at a second end opposite the first end to the pivot ring
136B. The
tension member 1406 connects at a first end to the pivot ring 136B and
connects at a
second end opposite the first end at the pivot ring 136C. The tension member
connects at a first end to the pivot ring 136A and connects at a second end
first end at the pivot ring 136C.
Figure 15 schematically illustrates a housing 1500 for the transmission 1300
Figures 13 and 14. The housing 1500 includes three hollow guide tubes 1504,
1506, and
1508. Each of the hollow guide tubes 1504, 1506, 1508 connect at a first end
to a hub
shell 1512 that holds the transmission 1300 and at a second end opposite the
first end to a
transmission wheel 1514. Three tension members 1516, 1518, 1520 are
disposed within the guide tubes 1504, 1506, 1508 and are connected at a first
transmission wheel 1514. A second end of the tension members 1516, 1518, 1520
opposite the transmission wheel 1514 are respectively connected with spherical
1526, 1528, 1530. In alternative embodiments of the invention, the weights
1526, 1528,
1530 may be adapted to other geometric shapes.
Multiple linkage members 1532, 1534, 1536, respectively extend from the
1526, 1528, 1530 to an annular member (not shown), such as the annular member
Turning to the method of operation of the housing 1500 of Figure 15, the
of the hub shell 1512 causes the rotation of the hollow guide tubes 1504,
1506, 1508. As
the guide tubes 1504, 1506, 1058 rotate, the weights 1526, 1528, 1530 extend
toward the transmission wheel 1514. The outward movement of the weights 1526,
1530 causes a shifting of the axis of rotation of the power adjusters 122A,
122B, 122C of
Figure 16 is another alternative embodiment of the invention. Figure 16 is a
schematic illustration of a manual version of the transmission 1300 shown in
Figures 13 and
14. For purposes of simplicity of description, only the differences between
1600 of Figure 16 and the transmission 1300 of Figures 13 and 14 are
transmission 1600 includes a flexible cable 1602 that connects at a first end
to a shifting
actuator (not shown). The cable 1602 extends from the shifting actuator (not
through the central passageway of the main shaft 102 and then extends through
(not shown) on the main shaft 102. From the aperture (not shown) the cable
1602 extends
around the pulley 1308. From the pulley 1308, the cable is guided around the
pulley 1306.
From the pulley 1306, the cable extends to the pulley 1308. Finally, from the
pulley 1308,
the cable 1602 connects to the main shaft 102.
Still referring to Figure 16, as the cable 1602 is directed toward the
shifting actuator (not
shown), the cable 1602 pulls on the pulleys 1304, 1306, 1308 thereby causing a
axis of rotation of each of the power adjusters 122A, 122B, 122C. Conversely,
shifting actuator (not shown) releases the cable 1602, the tension members
1404, 1406,
1408 cause each of the axis of rotation of the power adjusters I22A, 122B,
122C to shift in
a second and opposite direction.
Referring to Figures 17-19, three alternative
embodiments of the support member 154 are disclosed. In Figure 17, the support
154 is a cylindrical ring having a nominally concave outer surface.
In Figure 18, the circumference of the support member 1800 is the narrowest
a mid-point 1802 of the support member. From the midpoint, the outer
the support member 154 increases up to each of the ends of the support member
154. It is
noted that the slope created by the outer surface of the support member 154
increases from being horizontal, relative to its longitudinal axis, at the
midpoint 1802 to
about a 30 degrees angle at each of the ends of the support member 154, The
support member 1800 allows for axial movement of the support member 1800,
aiding in the ease of shifting of the transmission and also preventing the
154 from becoming dislocated at either of its ends during shifting.
Figure 19 depicts a support member 1900 having a concave outer surface. The
shape of the support member 1900 prevents the support member 1900 from
across the main shaft 102 while the transxniision 100 is in use.
Figure 20 illustrates an alternative embodiment of the of the present
between the support member 154 and a first thrust washer 2006. The second
bearing 1108 is disposed over the main shaft 102 on a side of the support
opposite the first thrust bearing 1106. The second thrust bearing 1108 is
between the support member 154 and a second thrust washer 2008. The second
washer 2008 is operably connected to a tension inducer 2018. The tension
inducer 2018
provides a force that returns the support member 154 to its neutral position
transmission 2000 is not shifting. Opposite the second thrust washer 2008, the
inducer 2018 may be secured to the main shaft 102, the stationary support 152
shown), or other component of the transmission 2000.
A first end of a tension inducer 2016 contacts the first thrust washer 2006.
other end of the tension inducer 2016 may be secured to the main shaft 102,
support 152 (Figure 2), or other component of the transmission 2000.
Preferably, to
minimize friction, a small amount of play is allowed between the first thrust
bearing 1106,
the second thrust bearing 1108, and the support member 154.
Figure 21 illustrates an alternative embodiment of the invention using the
bearing 1106 (also shown in Figure 11) and the second thrust bearing 1108
(also shown in
Figure 11). The first thrust bearing 1106 is rotatably disposed over the main
is positioned between the support member 154 and a first thrust washer 2106.
thrust bearing 1108 is disposed over the main shaft 102 and positioned between
member 154 and a second thrust washer 2108. Each of the pivot supports 134A,
134B,
134C have four extensions 2110, 2112 (Figure 24), 2114, 2116 (Figure 24) that
adapted to interface with the support ring 154. The extensions 2110, 2112,
2114, 2116 of
the pivot supports 134A, 134B, 134C are adapted to direct the support member
154 such
that it is constantly positioned underneath the power adjusters 122A, 122B,
122C during
the operation of the transmission. The first thrust washer 2106 is positioned
first thrust bearing 1106 and the extensions 2110, 2112, 2114, 2116 of the
134A, 134B, I34C. Preferably, to minimize friction, a small amount of play is
between the first thrust bearing 1106, the second thrust bearing 1108, and the
Figure 22 shows a front elevational view of the thrust washer 2108 of the
transmission 2100 of Figure 21. The thrust washer 2108 has a plurality of
grooves on its
outer edge to prevent the second thrust wisher 2108 from contacting the power
122A, 122B, 122C during shifting.
Figures 23 and 24 show an exemplary pivot support, such as is shown in Figure
wherein the pivot support is made of a two-part construction. Figure 23 is a
elevational view of the pivot support and Figure 24 illustrates a bottom plan
To form the pivot support of Figures 23 and 24, a first pivot support part
and a second pivot support part 2118A are pressed together. The first pivot
2120A and the second pivot support part 2118A are each roughly semi-
from a top plan view. The first pivot support part 2120A includes the
extensions 2112 and
2110 (Figure 24). Further, the second support part 2118A includes the
extensions 2116
and 2114 (Figure 24).
The first pivot support part 2118A and second pivot support part 2120A may be
fastened together by one of any number of traditional fastening techniques.
indentations 2130A may be formed on the second pivot support part 2120A and
indentation 2134A may be formed on the second pivot support part 2118A such
pivot support part 2120A and the pivot support part 2118A may be snap-fit
Grooves 2122A on the first pivot support part 2120A are designed to allow for
connection of each of the pivot supports in the transmission, such as by an
2720 (Figuie 27).
Figures 25 and 26 illustrate an alternative embodiment of the stationary
152. The stationary support 152 has a plurality of immobilizers 2510, 2512,
2514, 2516,
2518, and 2520. The immobilizers 2510, 2512, 2514, 2516, 2518, and 2520 may
optionally be formed as an integral part of the legs 153 of the stationary
support 152. The
stationary support 152 further includes pivot stops 2530, 2532, and 2534 that
arranged about a midpoint of the stationary support 152. The pivot stops 2530,
2534 prevent the pivot supports 134A, 134B, 134C from rotating too far and
rotatable driven member 170 and/or the rotatable driving member 120.
Figures 27, 28 and 29 illustrate yet another embodiment of the stationary
152. Each leg 153 of the stationary support 152 has a groove 2760 that is
receive one of three immobilizers 2702A, 2702B, 2702C. Each inunobilizer
2702B, 2702C includes a swivel 2730 which fits into the groove 2760. The
groove 2760
has a radius equal to or slightly larger than the radius of the swivel 2730.
The swivel 2730
is of a cylindrical or spherical design allowing it to rotate in the groove
2760. The ends of
the swivel 2730 are respectively connected to an angular support 2710A and an
support 2710B. The angular support 2710A and the angular support 2710B are
respectively connected, opposite the groove 2760, to the interconnecters
2720A, 2720B.
The interconnectors 2720A, 2720B connect to the pivot supports 134A, 134B,
134C,
thereby anchoring the pivot supports 134A, 134B, 134C to the stationary
support 152 and
also insuring that all the pivot supports 134A, 134B, 134C rotate in unison.
interconnecters 2720A and 2720B fit into the grooves 2122A (Figure 23) of the
support part 2120 or the apertures 142, 144 (Figure 21) of the pivot supports
134A, 134B,
The interconnecters 2720A and 2720B are respectively attached, at an end
the angular supports 2710A and 2710B, to pivot members 2740A and 2740B. The
members 2740A and 2740B are respectively inserted into the apertures 142, 144
of each. of
the pivot supports 134A, 134B, 134C thereby providing a pivot for each of the
supports 134A, 134B, 134C.
In one embodiment of the invention, the main shaft 102 may be adapted to mate
with the stationary support 152 in such a manner as to prevent the stationary
from rotating about the main shaft 102. For example, in the embodiment of the
disclosed in Figure 27, a flat edged aperture 2780 in the center of the
152 prevents the stationary support 152 from rotating. An exemplary main shaft
having an adapted outer diameter is shown in Figures 32 and 33. Further, the
aperture 2780 enables the quick assembly of the stationary support 152 to the
shaft 102.
Alternatively, the stationary support 152 can be affixed to the main shaft 102
Figures 30 and 31 illustrate an alternative embodiment of the stationary
152 of Figures 27-29. The stationary support 152 has one leg 153. In this
the irrunobilizer 2702B (Figure 27) and the immobili7er 2702C (Figure 27) are
be directly connected to the other pivot supports 134A, 134B, 134C in the
Since the immobilizer 2702A is anchored to the main shaft 102, each of the
122A, 122B, 122C are also anchored to the main shaft 102 through their
immobilizer 2702A. Advantageously, the use of one only one leg 153 reduces
manufacturing costs over those embodiments of the invention having multiple
Figures 32 and 33 illustrate an alternate embodiment of the main shaft 102.
main shaft 102 of Figures 32 and 33 may used in conjunction with various
the invention including the transmission 1600 (shown in Figure 16). At least
cable 1602 positioned within the main shaft 102, passes around a pulley 3212,
hole 3210 and exits the main shaft 102 at one end. A fastener 3214, such as a
bolt or pin,
secures the pulley 3212 in position. The main shaft 102 has a slot 3216 that
pulley 3212 to be easily inserted into the main shaft 102 during manufacture.
the main shaft 102 may be strengthened in the area of the pulley 3212 by
of the shell of the main shaft 102. Further, the main shaft 102 can be adapted
pivot stop 3218 for the pivot supports 134A, 134B, 134C. The pivot stop 3218
prevent the pivot supports 134A, 134B, 134C from pivoting too far during
hitting the rotatable driving member 120 and/or the rotatable driven member
170. Also, a
flange 3220 of the pivot stop 3218 can be used to prevent the support member
154 (Figure
2) from moving too far axially. Further, a tension inducer 2016 (Figure 20),
spring may be positioned against the flange 3220, to help keep the support
centrally positioned underneath the power adjusters 122A, 122B, 122C.
Figure 33 shows a cross section of the main shaft 102 having a flat area
the main shaft 102 to allow the flat edged hole 2780 of the stationary
supports 152 depicted
in Figures 27-31 to be quickly assembled onto the main shaft 102. However, the
the main shaft 102 and the stationary support 154 may adapted into other
Figure 34 illustrates yet another alternative embodiment of the invention.
is a schematic illustration of a manual version of the transmission 1300 shown
in Figures 13
and 14. For purposes of simplicity of description, only the differences
transmission 3400 of Figure 34 and the transmission 1300 of Figure 13 are
transmission 3400 includes three flexible cables 1312, 1314, and 1316 which
transmission 1300 in that the second end of the cables extend through three
apertures (not
shown) on the main shaft 102 and enter the central passageway of the main
three flexible cables 1312, 1314, and 1316, then extend through one end of the
102 and end at a conventional shifting actuator.
Figure 35 illustrates yet another alternative embodiment of the invention.
is a schematic cutaway side elevational view of a transmission 3500 that
automatically. Figure 36 is a schematic cutaway end elevational view of the
of the transmission 3500 of Figure 35. The features of the transmission 3500
Figures 35 and 36 may be used in conjunction with the features illustrated in
The transmission 3500 includes multiple identically configured cable
one for each of the power adjusters 122A 122B. 122C. However, for purposes of
simplicity of description, only one of the cable assemblies will be explained.
cable 1316 is attached at a first end to the main shaft 102 (not shown). From
102, the flexible cable 1316 travels around the pulley 1310, and continues to
pulley 3520A,
attached to one of the legs 153 of the stationary support 152. After wrapping
pulley 3520Aõ the flexible cable 1316 passes through the aperture 3614 (Figure
36) and
terminates by attaching to the second annular bearing 816. The second annular
is stationary and does not rotate.
From a first end that is attached to the first annular bearing 806, the
1532 passes through aperture 3624 and travels to a pulley 3522A. From the
pulley 3522A,
the cable 1532 passes through an aperture (not shown) in the hub shell 302 to
3524A.
In the embodiment of the invention shown in Figure 35, the first annular
806 rotates with the hub shell 302. The rotation of the first annular bearing
806 is
facilitated by ball bearings 808 that are situated between the first annular
bearing 806 and
the second annular bearing 816. From the pulley 3524A, a flexible cable 1532
around one or more other pulleys (not shown) or continue directly to and
weight 1526 (shown in Figure 15).
Figures 37 and 38 illustrate an alternative embodiment of the transmission
including a coasting mechanism 3710. The coasting mechanism 3710 can be used
connection with bicycles, motorcycles, automobiles and machinery where
transmission is desired. The coasting mechanism 3710 is positioned between the
186 and the second roller cage assembly 180. When torque is applied to the
driven member 170, the second roller cage assembly 180 responds by rotating in
direction as the rotatable driven member 170. The rollers 112 roll up the
of the rotatable driven member 170. The action of the rollers 112 causes the
mechanism 3710 to be directed toward the hub driver 186. The coasting
mechanism 3710
does not rotate with the rotatable driven member 170 because two slots 3716A
and 3716B
in the coasting mechanism 3710 engage a clutch ring 3714. The clutch ring 3714
frictionally attached to the main shaft 102 and has two prongs which extend
slots 3716A and 3716B of the coasting mechanism 3710. The coasting mechanism
touches the hub driver 186 creating friction between the coasting mechanism
3710 and the
hub driver 186. Notches 3711 may be cut on the beveled area of the coasting
3710 to increase friction. The friction causes the rollers 112 to continue to
of the shallow grooves of the rotatable driven member 170 and the coasting
3710 until sufficient force is applied against the hub driver 186 that it
binds and rotates with
the coasting mechanism.
The clutch ring 3714, then rotates with the coasting mechanism 3710. When
torque is released, a clutch tension inducer 3712 pushes the coasting
mechanism 3710 away
from the hub driver 186, disengaging the coasting mechanism 3710 from the hub
and allowing the hub driver 186 and hub shell 302 to continue rotating.
Still referring to Figure 37, an alternative shifting method is described for
transmission 3700. For purposes of simplicity, only the differences between
transmission 3700 and other embodiments previously described will be noted.
supports 134A, 134B, 134C, when shifted toward high cause the pivot support
legs 3730
that are attached to pivot supports to 134A, 134B, 134C, to contact and push
thrust washer 2006 toward the drive side of the transmission 3700. The
first thrust washer 2006 causes both the first thrust bearing 1106 and the
154 to be pushed toward the stationary support 152. The tension inducer 2018
the support member 154 from moving too far and when the transmission 3700 is
toward low, causes the support member 154 to be pushed toward the pivot
The present invention provides a novel transmission which provides a
variable input/output angular -velocity ratio offering up to a 900% range of
Further, the transmission can be actuated either manually or
Further, the transmission of the invention provides a simple design which
minimal number of parts to implement, and is therefore simple to manufacture,
light and produces very little friction. The transmission eliminates
duplicate, overlapping,
or unusable gears which are found in geared transmissions. The transmission
need for clutches which are traditionally used for changing gears. Lastly, the
can save energy or gasoline by providing an ideal input to output angular
various omissions, substitutions, and .changes in the form and details of the
process illustrated may be made by those skilled in the art without departing
(22) Filed 1998-10-22
(41) Open to Public Inspection 1999-04-29
Examination Requested 2011-02-11
Expired 2018-10-22
Request for Examination $800.00 2011-02-11
Filing $400.00 2011-02-11
Maintenance Fee - Application - New Act 2 2000-10-23 $100.00 2011-02-11
Maintenance Fee - Application - New Act 3 2001-10-22 $100.00 2011-02-11
Maintenance Fee - Application - New Act 4 2002-10-22 $100.00 2011-02-11
Maintenance Fee - Application - New Act 5 2003-10-22 $200.00 2011-02-11
Maintenance Fee - Application - New Act 6 2004-10-22 $200.00 2011-02-11
Maintenance Fee - Application - New Act 7 2005-10-24 $200.00 2011-02-11
Maintenance Fee - Application - New Act 8 2006-10-23 $200.00 2011-02-11
Maintenance Fee - Application - New Act 9 2007-10-22 $200.00 2011-02-11
Maintenance Fee - Application - New Act 10 2008-10-22 $250.00 2011-02-11
Maintenance Fee - Application - New Act 11 2009-10-22 $250.00 2011-02-11
Maintenance Fee - Application - New Act 12 2010-10-22 $250.00 2011-02-11
Maintenance Fee - Application - New Act 13 2011-10-24 $250.00 2011-09-14
Maintenance Fee - Application - New Act 14 2012-10-22 $250.00 2012-09-17
Maintenance Fee - Application - New Act 15 2013-10-22 $450.00 2013-09-11
Final Fee $300.00 2014-01-08
Maintenance Fee - Patent - New Act 16 2014-10-22 $450.00 2014-10-01
Maintenance Fee - Patent - New Act 17 2015-10-22 $450.00 2015-09-30
Maintenance Fee - Patent - New Act 18 2016-10-24 $450.00 2016-09-28
Maintenance Fee - Patent - New Act 19 2017-10-23 $450.00 2017-09-27
MOTION TECHNOLOGIES, LLC
Abstract 2011-02-11 1 13
Description 2011-02-11 27 1,487
Claims 2011-02-11 1 19
Drawings 2011-02-11 22 538
Representative Drawing 2011-03-18 1 12
Cover Page 2011-03-24 1 41
Claims 2013-03-25 1 27
Description 2013-03-25 26 1,488
Representative Drawing 2014-02-26 1 12
Cover Page 2014-02-26 1 42
Correspondence 2011-03-01 1 43
Fees 2011-09-14 1 68
Assignment 2011-02-11 4 113
Assignment 2012-07-31 41 1,545
Prosecution-Amendment 2012-09-25 3 118
Prosecution-Amendment 2013-03-25 9 513
Correspondence 2014-01-08 2 78
Assignment 2014-06-23 3 107