Patent Application
20200189685
The Dual Power invention described herein relates generally to a dual power propulsion system for human power vehicles, and more particularly to the use of a turning track, rack, pinion and one-way bearing propulsion system to permit turning of the vehicle while providing torque to the driving wheel of the vehicle from simultaneous or individual use of the rider's arms and legs.
Human powered vehicles employing many different designs for humans to move vehicles have been developed and used throughout the ages. These types of vehicles have been used in many activities, including but not limited to sports, riding to work or store, movement of goods and passengers in commerce, physical exercise, conditioning, or other task. The types of vehicles that can utilize the benefits of a crank axle and driving wheel powered by both the rider's arms and legs include, but are not limited to: bicycles, tricycles, recumbent bikes and trikes, tandem bicycles, human powered airplanes, human powered helicopters, and water craft.
Current and past variations of combined arm and leg powered vehicles have embraced rotating hand cranks, pumping handle bars “up and down” or “back and forth” over the stem of the bicycle, moving one arm up in one direction and the other arm down in the opposite direction simultaneously, moving both arms up and down simultaneously while pulling-on handle bars, and the use of systems containing rods, rotating cables, gears, and racks connecting movable handle bars to the crank axle. An example of this prior art is U.S. Pat. No. 5,328,195, by Graham Sommer, in which a cable is attached to a moveable handle bar that moves “up and down” in unison with a similar movement of the rider's arms and hands. Because U.S. Pat. No. 5,328,195 uses only an unsheathed push-pull cable by itself to transfer power from the pumping arm bars to the crank axle, the rider's arm power is delivered to the crank axle only during the single condition in which the rider is “pulling-up” on the movable handle bars and thus pulling-up on the cable. U.S. Pat. No. 5,328,195 does not provide an ability for the rider to deliver any power to the crank axle when the rider's forearms and hands are “pushing down” on the movable forearm bars. This is because U.S. Pat. No. 5,328,195 enables only the use of standard push/pull cables, which are not sliding inside a stationary cable sheath. Thus, it only causes power to be delivered in the “Pull” mode, and not in the “Compression” or push mode. Because the cable is moving by itself, and not sliding within a stationary sheath, the rider's downward stroke on the forearm bars is like pushing on a string, and hence no power can be delivered to the forward rotation of the crank axle and driving wheel during the “down” stroke. In fact, U.S. Pat. No. 5,328,195 includes as one of its necessary components, a mechanical re-wind mechanism that automatically re-winds the cable during the compression stroke; this ensures no human power can propel the bicycle forward during the rider's “push” stroke on the push/pull cable's “down” stroke.
A second example of variant prior art is USPTO Publication No. US 2007/0114086 A, published May 24, 2007, by Glessner, et. al., and describes a bicycle with two transmissions powered by two aero bars. In the Glessner publication, he enables his invention with the rider sequentially raising and lowering each aero bar separately, first the left one is pulled-up while the right aero bar is simultaneously pushed down, then the left aero bar is pushed-down while the right aero bar is pulled-up. This is quite different from the current invention in which the rider simultaneously pushes and pulls both the right and left forearm bars up together and then pushes them down together. Glessner also does not reference the need nor the use of employing inverted positioned rack and pinion gears in his drive train.
While some vehicles have had modest acceptance in the marketplace, they have been deficient because they cause excess resistance from friction-loss in the operative component parts, they are clumsy to operate, they only provide energy into the crank axle during the pulling or upward stroke of the handle bars, at high speeds some of the designs cause the rider's control of the bicycle to be unstable.
The purpose of this invention is to remedy all of the afore-described and other deficiencies in the prior art relating to arm power assisted cycling.
In accordance with the invention, the rider is provided an arm assisted drive train in which the arm-powered drive mechanism provides power to the driving wheel, on demand, and can operate regardless of whether or not the rider is using his legs to rotate the pedals. The invention's components are designed so that the rider enjoys “on demand” Dual Power cycling in a stable and controlled manner through use of his elbows and upper arms to steer the bicycle. This is called 4 Point Steering. Dual Power cycling, in which the rider powers the bike using both his arms and legs, also allows the rider to exercise twice as many muscle groups compared to cycling with just his legs, and allows for a more complete cardio, vascular and muscle tissue work-out.
Briefly, the Dual Power Drive Train consists of the following:
A) The use of two yoke-connected forearm bars rotating on bearings over a fulcrum in a partial arc, and always positioned parallel to the direction of travel of the front wheel. This allows the rider to use his maximum amount of leverage with his forearms, biceps, and shoulders to input energy and torque to rotate the driving wheel.
B) Power rotations of the yoke-connected forearm bars involve the rider moving them in unison in an upward direction to the sky, and then in a downward direction toward the ground. Thus, the rider's yoke-connected forearm bar power movements are always neutral relative to lateral turning of the front wheel.
C) The upper arms and elbows provide four separate control points, and thus 4 point steering. The rider holds his upper arms and elbows in place to both: 1) turn the front wheel and 2) rotationally pump the forearm bars in a partial arc. Thus, in order for the rider to steer the front wheel he must affirmatively move all four control points in unison in order to make the desired turn to either his left or right. The rider can intentionally, simultaneously, and continuously power the bicycle by rotationally pumping the forearm bars in a partial arc while making his turn. In this way, there's no unintended lateral turning of the front wheel of a bicycle or tricycle, which provides the rider with stability and control of the Dual Powered bicycle.
D) A turning track is operatively connected to the underside of the yoke attached to the two forearm bars. A carriage is operatively connected to the head tube, which is attached to frame of the bike. This carriage is directly connected to a telescoping rod, which allows the carriage to move vertically up and down, but does not allow the carriage to move laterally;
E) The carriage also has attached to it several rollers, and even though the turning track moves laterally over them, these rollers remain horizontally stationary because they're attached to the stationary positioned carriage;
F) A raceway on the turning track also comes in contact with the rollers; as the rider steers the forearm bars left or right, the turning track correspondingly and simultaneously rotates with the forearm bars; this is because the turning track rolls over the stationary positioned rollers;
G) Operatively connected to the carriage is a connecting rod, which rotationally moves up and down, as well as back and forth, in unison with the rider's oscillations of the forearm bars. The connecting rod is held in its lateral plane by a guide through which the connecting rod travels;
H) The rear end of the connecting rod has a T fitting, or splitter, attached to it, and one of two racks is connected to each side of the T fitting; one rack is attached to one side of the splitter, and the other rack is attached to the opposite side of the splitter;
I) Two pinion gears are positioned with the teeth of each one's respective rack moving over teeth of its own pinion gear; these pinion gears are positioned in an inverted manner, one to the other;
J) A one-way bearing is attached to each of the two pinion gears, and at the same time is also attached to the outer surface of the crank axle;
K) Thus, as the rider oscillates the forearm bars up and down, the carriage moves up and down in unison with it. The connecting rods contemporaneously move up and down, as well as back and forth, and the two racks also move in unison with the connecting rod;
L) Because the racks are inverted one to the other, with one rack positioned on top of one of the pinion gears, while the other rack is positioned on the bottom of the second pinion gear, and the one-way bearings are positioned between these pinion gears and the crank axle, the crank axle, chain sprocket, chain, and driving wheel are always rotating in the direction that propels the driving wheel and bicycle forward, while the rider rotationally oscillates the forearm bars up and down. Similarly, if one was to reverse the rack and pinion gears, which are inverted as described in the preceding sentence, he would achieve the same result of the crank axle rotating in the same direction to always propel the driving wheel in a forward direction;
M) As a result of the connecting rod being solid or of a tube configuration, the only way to turn the bicycle's front wheel left or right is by disconnecting and separating the associated left or right steering function of the forearm bars and front wheel from the back and forth movement of the solid connecting rod or tube. This is accomplished by attaching a turning track to the forearm bars, and operatively attaching the carriage and its rollers to the bicycle frame. In this way, the carriage rollers, which cannot move left or right, permit the forearm bars to move the turning track left or right, and thus allow the rider to steer the front wheel of the bike left or right, while simultaneously rotating his forearm bars up and down, which also moves the connecting rod back and forth. The back and forth movement of the connecting rod operatively rotates the crank axle to propel the bike forward during a left or right turn;
N) The Dual Power Bicycle described herein is designed to improve many facets involved in the riding of a combined arms and legs powered bicycle, as compared to a bicycle in which the rider uses power only from his legs to rotate the crank axle and driving wheel. Some of these benefits include, but are not limited to: 1) improving the efficiency of the body's lactate uptake by spreading-out over more muscle groups of the body the energy utilized in locomotion of the vehicle, 2) providing a more complete exercise program for the rider's body by utilizing more muscle groups of the body during the ride, 3) permitting the rider to ride the bicycle faster, or pull a greater load, through implementation of additional muscle groups which inputs more energy into the crank axle and driving wheel, 4) permitting the rider to have more efficient usage of the available oxygen in certain parts of his body by spreading it out over more active muscle groups during a given period of riding time than when the rider is using just his legs, thus making a more efficient cardio workout for the rider by engaging both of the rider's upper and lower body muscle groups, and 5) allowing the rider to transfer nearly 100% of his arm power into rotating the drive wheel minus a few percentage points of power (losses) due to friction from general bearings and the two gears.
This invention, and the objects and features thereof, will be more readily apparent from the following detailed description and appended claims when studied in conjunction with the Drawings.
Component parts of the invention include:
In the following description and accompanying drawings, like numbers refer to like parts whenever they occur. In addition, while the following enablement refers to many component parts for Configuration I of the invention operating at specific positions within the overall Dual Power drive system, some of these parts may be shifted to different locations within the overall drive system, and still maintain complete functionality of the Dual Power drive system. An example of this is with rack 32, which in the current design is positioned underneath pinion gear 32a, it could also be positioned on top of pinion gear 32, and operate just as well. Of course if this design change is implemented, then rack 33 would need to be re-positioned and located under pinion gear 33a. (See
A. Dual Power Drive Train for Configuration I
The Dual Power Bicycle consists of bicycle frame 1, and has attached to its turning tube 7 and stem 8, a perpendicularly mounted fulcrum rod 109. This fulcrum rod 109 serves two purposes, a) provides the rider with the ability to steer the front wheel 18 of bicycle 1 with his elbows and upper arms by causing the turning tube 7 to naturally steer right or left when he turns it 7 with his upper arms and elbows on the forearm bars 110 and elbow holders 22. The rider accomplishes a left turn by pushing his right elbow and upper arm forward, and pulling-back with his left elbow and upper arm. A right turn is accomplished by reversing the preceding directions with his elbows and upper arms. Because the forearm bars 110 are attached to the fulcrum rod 109 with bearings 109a, this permits the rider to simultaneously input muscle generated power from his biceps, forearms, and shoulders into torque that rotates the crank axle 35. Torque is created when the rider rotationally pumps “up and down” the forearm bars 110 at a rate as fast or faster than the rider is turning the crank axle 35 from pumping the pedals 11a and 12 with his legs. The fulcrum rod 109 has on each end a bearing 109a, and attached to each of these bearings 109a is the rear end of one of two forearm bars 110. Thus, as the rider “pulls-up and pushes-down” on the hand grips 120 of forearm bars 110, the rear end of each of these forearm bars 110 pivots on fulcrum rod 109 and bearings 109a, causing a cyclical angular displacement of the forearm bars 110 as they rotate lineally along the path of an arc. (See
If the rider is going to use vigorous power during the down stroke of the forearm bars 110, then it is useful for him to use the forearm/elbow bindings 122a as illustrated in
The forearm bars 110 are connected together with two yokes 121 and 121a. The function of yokes 121 and 121a is to tie together the two forearm bars 110 so that they can only move together in unison, one with the other, rotationally “up and down”, or be steered in unison left or right. Thus as the rider grips hand grips 120, and rotationally pumps forearm bars 110 “up and down” in a complete cycle, this function causes the turning track 124 and carriage 125 to also rotationally oscillate up and down; simultaneously connecting rod 27 moves in unison with them both up and down as well as back and forth. (See
Attached to turning track 124 is a carriage 125. Carriage 125 is attached to turning track 124 through rollers 125a. The carriage 125 and rollers 125a are operatively coupled to the frame with telescoping rod 126. Telescoping rod 126 allows the carriage 125 and rollers 125a to move vertically while prohibiting movement side to side. Thus, as the rider steers the forearm bars 110 to either the left or right, he is simultaneously rotating turning track 124 as well as the turning tube 7, and thereby steering the front forks 19 and front wheel 18 to the left or right. Because the carriage 125 and rollers 125a are held horizontally stationary, the carriage 125 and rollers 125a permit the turning track 124 to roll over the rollers 125a, while also allowing the rider to rotationally pump the forearm bars 110 vertically, which is operatively inputting power into the driving wheel 17 and moving the bicycle forward. (See
A horizontally positioned connecting rod 27a is attached to carriage 125 on one end, and on its opposite end, it 27a is attached to the front end of the diagonally positioned connecting rod 27. Thus, as carriage 125 is rotationally moved up and down by the rider oscillating the forearm bars 110, the horizontal connecting rod 27a is also rotationally moved up and down. This causes connecting rod 27 to simultaneously move both up and down as well as back and forth.
These components serve two purposes, the first is to provide the rider with four point steering, which the rider uses to make any turn to his right or left by simply turning in unison both his forearms and hands in the desired direction. Four point steering of the forearm bars 110 uses four separate human touch points to steer the front wheel 18. The four human touch points are: 1) left forearm/elbow, 2) right forearm/elbow, 3) left hand and 4) right hand that are all placed onto the forearm/hand bars 110 and grips 120, respectively. Thus, in order for the rider to steer the front wheel 18 he must affirmatively and simultaneously move all four touch points in unison toward the direction of his desired turn to the left or right.
Normally the use of a solid drive line 27 in Configuration I would preclude the rider from being able to turn the bicycle 1 to the right or left. This is because the solid drive line 27 is inputting power to the crank axle from the oscillating forearm/hand bars. In order to input this power, it 27 cannot be flexible. This problem can be overcome by separating and making independent the turning function from the forearm/had power function. This is accomplished by use of the turning track 124 affixed to the forearm/hand bars, carriage 125 affixed to the rollers 125a, these rollers permitting the turning track to roll over the carriage during a turn, telescoping rod 126 affixed to the head tube 7, and connecting rod 27 operatively connected to the crank axle.
The rear end of connecting rod 27 is connected to splitter 31, which is in turn connected to racks 32 and 33. The geometric positioning of these parts, as shown in
Because one-way bearings 32b and 33b, respectively, are positioned between crank axle 35 and pinion gears 32a and 33a, the one-way bearings 32b and 33b allow the rider to enjoy “on demand” Dual Power bicycling. This occurs as a result of the fact that each one-way bearing 32b and 33b must be rotated by its respective pinion gear 32a and 33a at a rotational rate that is equal to or greater than the revolutions per minute which the rider is pedaling the crank axle 35 with his legs. (See
The connecting rod 27 is held in its vertical plane by virtue of it 27 traversing through a guide 28, that is attached to the down tube 3. This guide 28 controls the path of lateral travel by precluding the connecting rod from being able to move laterally away from the down tube 3.
A set of rollers 32c and 33c, are attached to housing 30, and positioned on the bottom and top of their respective racks 32 and 33. The roller sets 32c and 33c cause the teeth of their respective racks 32 and 33 to be continuously meshed into the teeth of their respective pinion gears 32a and 33a. Thus, even though racks 32 and 33 are moving back and forth over their respective pinion gears 32a and 32a, the rollers 32c and 33c, respectively, are held stationary because of their 32c and 33c attachment to the stationary housing 30. This causes the racks, 32 and 33, to just roll over the rollers 32c and 33c, respectively, as their 32 and 33 teeth, which are meshed into the teeth of pinion gears 32a and 33a, respectively, rotate their respective pinion gears 32a and 33a. The inverted rotation of pinion gears 32a and 33b cause their respective one-way bearings 32b and 33b to cause crank axle 35 to continuously rotate in only the forward direction as a result of the rider rotationally oscillating his forearm bars 110. (See
According to embodiments, the function of the rider simultaneously using both his arms and legs, prosthetic or otherwise, to input torque into the driving wheel is called Dual Power. The components of this invention are designed so that the rider enjoys Dual Power bicycling in a stable and controlled manner through use of 4-point steering. He can reduce his exercise time by up to 40%, because he is using both his upper and lower body muscles. The rider can also increase his speed as a result of inputting more torque into the driving wheel.
The use of two yoke-connected forearm/hand bars rotating over a fulcrum rod in a partial arc, and always positioned parallel to the direction of travel of the front wheel, allows the rider to use his maximum amount of leverage with his forearm/hand bars, shoulders, and upper body to input energy and torque into rotating the crank axle. This torque is then transferred to the driving wheel through application of currently used bicycle sprockets and chains.
Rotation of the yoke-connected forearm/hand bars starts and ends with the rider moving them in an upward direction toward the sky, and then in a downward direction toward the ground. Thus, the rider's yoke-connected forearm/hand bar power movement is always neutral relative to a lateral steering of the front wheel. Many examples of prior art operate from a sequential pushing or pulling on one side of the handle bars and then the other side, which can lead to an unwanted and unsafe steering of the front wheel.
Four point steering of the forearm/hand bars provides four separate human touch points to steer the front wheel. They are: 1) left elbow, 2) right elbow, 3) left hand and 4) right hand are all placed onto the forearm/elbow bars and handgrips. This is their riding position while the rider is a) steering the front wheel and b) rotationally pumping the forearm/hand bars together in the same up and down direction to input power to the crank axle. Thus, in order for the rider to steer the front wheel he must affirmatively and simultaneously move all four touch points in unison toward the direction of his desired turn to the left or right. In this way, there is no unintended lateral steering of the front wheel of the cycle, unless the rider chooses to intentionally make a turn and affirmatively does so.
The Dual Power Bicycle described herein is designed to improve many facets involved in the riding of a combined arms and legs powered bicycle. Some of these improved facets include, but are not limited to: 1) improving the efficiency of the body's lactic acid uptake by spreading-out over more muscle groups of the body the energy utilized in locomotion of the vehicle, 2) providing a more complete cross-training exercise program for the rider's body by utilizing more upper body muscle groups during the ride, 3) permitting the rider to ride the bicycle faster-or pull a greater load-through the implementation of additional muscle groups to input more energy into the crank axle and driving wheel over a given amount of time, and 4) permitting the rider to have a more efficient usage of the available oxygen in certain parts of his body by spreading it out over more active muscle groups during a given period of riding time than when the rider uses just his legs, and 5) making a more efficient cardio and respiratory workout for the rider by engaging both of the rider's upper and lower body muscle groups and burning more calories during a set amount of time. Because the rider is more efficiently using his cardio and respiratory systems together, he can spend less time on the bike to satisfy these exercise requirements.
A. Parts Used in Configurations II and III
List of the Invention's Component Parts in Addition to the Component Parts Listed Previously:
The part number and nomenclature for such parts are as follows in this list of component parts shown in the Drawings illustrating this invention for Configurations II and III:
In the following description and accompanying drawings, like numbers refer to like parts whenever they occur. In addition, while the following Enablement refers to many component parts of the invention operating at specific positions within the overall dual power drive system, some of these parts may be shifted to different locations within the overall drive system, and still maintain complete functionality within the Dual Power drive system. An example of this is with the positioning of the cam and spring-loaded cam follower, wherein they are placed in front of the head tube in this Enablement of the invention, but to someone knowledgeable and skilled in the art, will recognize that they can be placed on the lower crank axle and still have the cam and cam follower force the upper front crank over its top and bottom dead center positions.
There are two configurations for the additional embodiments of the invention, Configurations II and III. The differences between them is that in Configuration II, there is a sprocket 338 and chain 340 that traverses along the exterior side of the down tube 3 and drives the crank axle 35; however in Configuration III, a rotating solid drive line 446 is located inside the down tube 3, and substitutes for the chain 340 to transfer torque from the top of the down tube 3 to drive the crank axle 35 from power provided by the rider rotationally pumping the forearm/hand bars 110 up and down. The invention also allows the rider to use his upper body muscles by rotationally pumping the forearm/hand bars 110, in conjunction with employing his lower body muscles, by pumping his legs on the pedals 11a and 12; or the rider can use just his lower body muscles by pumping his legs on the pedals 11a and 12 and not moving his upper arms. Thus the rider reduces his cardio and respiratory exercise time while simultaneously building-up the muscle mass in his arms, shoulders and upper back. These continuous and unified forearm/hand power strokes cause the rider to efficiently exercise and build muscle mass in his upper body muscles while simultaneously exercising his legs. Consequently, the Dual Power drive train can cut the rider's exercise time up to 40%, and provides a low impact upper body exercise format to allow disabled people to exercise their whole body riding the cycle 1 at the same time. This drive train also allows the rider to input more torque into the crank axle 35 by using both his upper body and lower body muscles simultaneously which can result in faster speeds and hauling more pay load.
In both Configurations II and III, the description of the Dual Power drive train is divided into four basic segments, they are: a) Upper Front Drive System 200 with all of the 200 series parts being used in both Configurations II and III, b) Middle Drive System 300 (Middle Drive Parts used only in Configuration II), and Middle Drive System 400 (Middle Drive Parts used only in Configuration III). A general summary for Configuration III is:
In applying the forgoing Dual Power components to the rider's bicycling experience, he grasps the hand grips 120 of the forearm/hand bars 110, places his elbows on top of the platforms 122, and then rotationally pulls-up and pushes-down on the front of the forearm/hand bars 110, always using power strokes. Simultaneously he rotates the pedals 11a and 12 with his legs. Because the back of the forearm/hand bars 110 are attached to bearings 109a that rotate over the fulcrum bar 109, the rotational up and down oscillations of the forearm/hand bars 110 cause the yoke 121, and its attached connecting bridge rod 226, to move up and down. Since the bottom end 226b of the connecting bridge rod 226 is attached to the outside end of the crank 227, and the crank's 227 inside end is attached to the rotatable but solid driveline 229, this causes the vertically moving connecting rod 226 to rotate the crank 227 a full 360 degrees with each up and down rotational oscillation of the forearm/hand bars 110.
The 360 degree rotation of the crank 227 then causes the rotatable solid drive line 229, to which the inner end of the connecting rod 226 is attached to the front end of this rotatable drive line 229, to also rotate 360 degrees with each oscillation of the forearm/hand bars 110. As a result of the rear end of the rotatable driveline 229 being connected to the axle of the first, or front, bevel gear 334a, the teeth of this bevel gear 334a also rotate 360 degrees. The teeth of this front bevel gear 334a are meshed into the teeth of a second bevel gear 334b, which is positioned perpendicular to the first, or front, bevel gear 334a. The back side of this second, or rear, bevel gear 334b can have attached to it a chain sprocket 338. Thus as the teeth of these two bevel gears 334a, 334b rotate 360 degrees, this chain sprocket 338 also rotates 360 degrees.
Alternatively, the axle 335 of the second bevel gear 334b may be attached to a first spur gear 336. The first spur gear 336 may have positioned adjacent to it a second spur gear 337. On the back side of the second spur gear 337 may be positioned the mid-level chain sprocket 338, which may have multiple sprockets 338a adjacent to one another. An upper front chain derailleur 339 may be used to move this mid-level chain 340 from the teeth of one chain sprocket 338 to another 338a.
While the front end of the chain 340 is positioned over the teeth of the front sprocket 338, the rear end of the chain 340 is draped over the teeth of a second sprocket 341, called the lower rear sprocket 341, which is attached to the crank axle 35. Thus, as the rider uses his upper body muscles and forearms to pull-up and then push-down with power strokes, jointly and in unison, on the forearm/hand bars 110, the afore-described drive train causes power from his upper body muscles to input torque and rotate the crank axle 35, which in turn rotates the driving wheel 17 of the bicycle 1, through use of standard industry chains 15 and sprockets 14 positioned from the front sprocket 14 and derailleur 15 to the rear cassette 15. This Dual Power drive train may also be used on other vehicles and applications, such as, but not limited to tricycles, human powered vehicles, airplanes, watercraft and the like.
In order to allow steering of the front wheel 18 to the left or right, while the rider is simultaneously pumping his forearm/hand bars 110 vertically and rotationally, the steering function of the turning track 124 and forearm/hand bars 110 must be separate and independent from the vertical and rotational movement of the stationary positioned upper front crank 227. This can be accomplished through the use of a telescoping rod 126, carriage 125 and curved linear rolling track 124. The rolling track 124, or other such device, is attached to the forearm/hand bars 110, and moves laterally and vertically in unison with them. As the turning track 124 is turned to the right or left, its inner surfaces slide over the rollers 125a, which are attached to the carriage 125. The carriage 125 is held in a stationary position, free from lateral movement. However, it can still move vertically up and down, because it is attached to the top of a telescoping rod 126 that moves in and out in unison with the vertical movement of the turning track 124. The base 126a of the telescoping rod 126 is affixed to the head tube 6 of the bike 1, which thereby precludes lateral movement of the carriage 125, even though the forearm/hand bars 110, turning tube 7, and front wheel 18 are turned by the rider to his right or left.
Other vehicles, such as a tricycle may include two front wheels, wherein the steering is configured to turn the two front wheels, which operate with tie rods or the like; a marine vehicle with a rudder or propeller being controlled for steering; a flying vehicle with ailerons, elevators and/or rudder to control steering of the flying vehicle. In these embodiments, the turning track 124 may be coupled to a steering system.
A bicycle 1, or other type of human powered vehicle, airplane, or watercraft utilizing the Dual Power drive train, can be designed in an upright riding geometry, or alternatively, in a recumbent configuration. It is anticipated that for someone schooled in the art of designing drive trains for upright and recumbent bicycles, tricycles, and other such vehicles, the basic components can be modified in minor ways that will not alter the functionality of the current invention.
A. UPPER DRIVE SYSTEM 100 for Both Configurations II and III:
The UPPER FRONT DRIVE SYSTEM 100 for the dual power bicycle 1 consists of a fulcrum rod 109 that is attached to the stem 8 of the bicycle 1. Two forearm/hand bars 110 are perpendicularly mounted at their rear ends 110 to the fulcrum rod 109 through a set of bearings 109a. Turning track 124 is affixed to the forearm/hand bars 110. Platforms 122, upon which the rider places his elbows and forearms, are attached to the top of the forearm/hand bars 110. A carriage 125, with rollers 125a attached to it 125, is located inside the turning track 124. The carriage 125 and its rollers 125a stay in a stationary position relative to the crank 227, while the turning track 124 rotates over them 125a when the rider turns the bike 1 to either his right or left direction. (See
The forearm/hand bars 110 are connected together through a turning track 124 that is located below and between both forearm bars 110. Attached on the underside of each of them 110 (See
The attachment bracket 123b on the carriage 125 is operatively connected to a horizontally positioned rod 125b on its 125b front end, and to the top of a diagonally positioned telescoping rod 126 on its rear end. In between the carriage 125 and the telescoping rod 126, this same horizontal rod 125b is attached to a vertically mounted connecting bridge rod 226, which has two rod end bearings 226a and 226b on either end of it 226. The purpose of the carriage 125 and its rollers 125a are to permit the rider to steer the front wheel 18 of the cycle 1 to either his right or left, while at the same time pumping the forearm/hand bars 110 “up and down”, which continuously provides torque to the crank axle 35 and the rear wheel 17. (See
The horizontal rod 125b, attached on its front end to the carriage 125 and to the top of the telescoping rod 126 on its rear end, has affixed in between these two end points an upper rod end bearing 226a. Attached to the bottom end of this rod end bearing 226a is the top end of the vertically positioned connecting bridge rod 226. The bottom end of this connecting bridge rod 226 has attached to it a lower rod end bearing 226b. The bottom end of the lower rod end bearing 226b is affixed to the outer end of the crank 227. The inner end of the crank 227 is attached to a solid drive line 229 that will rotate. (See
The solution to this problem is to make the front wheel 18 steering function independent from the rider's vertical pumping of his forearm/hand bars 110 as he provides torque to the driving wheel 17. One means for separating and making independent the turning function from the forearm/hand power function is by use of the turning track 124, carriage 125 affixed to rollers 125a, telescoping rod 126, and connecting bridge rod 226 attached to the stationary positioned crank 227 affixed to the front end of the solid drive line 229, as shown in
Another important set of component parts are the cam 230, cam follower 231, spring set and its housing 232. As the rider pushes and pulls his pumping forearm/hand bars 110, he is rotating both the crank 227 and horizontal rotating rod 229. The current invention utilizes cam 230, cam follower 231, and cam follower spring set 232 to push the upper front crank 227 over its 227 top and bottom dead center positions. (See
The cam 230 may have the general shape of an ellipse. The cam follower 231 and spring-loaded cam follower tower 232 are designed such that the spring 232 will be in its 232 most upward and loaded position when cam follower 231 is just cresting the shoulder on the circumference of cam 230 and ready to drop over its 230 circumferential shoulder. As the cam follower 231 drops over the shoulder on the circumferential surface of cam 230, the energy loaded spring mechanism 232 releases its 232 stored energy and forces the cam follower 231, to which it 232 is attached, to travel and rotate over the circumferential surface of the cam 230, causing it 231 to continue its 231 full run over the geometric circumferential surface of the cam 230 to the next cam shoulder 230, located 180 degrees away from the first cam shoulder 230. (See
B. Middle Drive System 300 Applicable Only to Configuration II
The rear end of solid drive line 229 engages with the front axle of a set of bevel gears 334a and 334b positioned near the top end of down tube 3. As this drive line 229 rotates, it 229 causes the set of bevel gears 334a and 334b to rotate in unison with it 229, as shown in
Utilizing the design of Configuration II, the Dual Power bicycle 1 gives the rider the ability to vary the number of oscillations per minute that he uses in pumping his forearm/hand bars 110. It 1 accomplishes this through the use of multiple sprockets 338 and 338a. Chain 340 fits over any of sprockets 338 or 338b. The mechanism used to transfer chain 340 from one sprocket 338 to the next 338a is called an upper front derailleur 339. (See
A chain or belt 340 fits over a set of the teeth around the circumference of sprockets 338 or 338a. The rear end of this chain or belt 340 fits directly over the outer circumferentially located teeth on lower sprocket 341. This sprocket 341 is affixed to crank axle 35, as shown in
a. Upper Drive System 100 for Configurations I, II, and III:
All of the preceding Enablement describing Upper Drive System 100 for Configurations I, II and III is adopted and incorporated herein as though set forth fully.
B. Enablement for Middle Drive System 400 Applicable Only to Configuration III of the Dual Power Drive Train
The primary differences between Configuration II and Configuration III are found in the use of different components for Middle Drive Systems 300 and 400. For example, the horizontal driveline 229 is positioned in both Middle Drive Systems 300 and 400 so that it traverses through the front wheel 18 and crown of the forks 19, and then immediately attaches to bevel gear 334a in Configuration II, (See
The lower rear end of rotating diagonal drive line 446 is attached to the front end of the axle for bevel gear 448a, whose gears are meshed into those of bevel gear 448b. This bevel gear 448b is positioned and attached to crank axle 35. Thus, as the upper set of bevel gears 445a and 445b, along with diagonal drive line 446, are rotated from turning of the upper front rotating drive line 229, they, 445a, 445b, and 446 cause the lower set of bevel gears 448a and 448b to rotate. Because bevel gear 448b is attached to the crank axle 35, the rotation of bevel gears 448a and 448b cause crank axle 35 to also rotate in unison with them 448a and 448b. (See
In the case wherein the Dual Power bicycle 1 provides the rider with the ability to vary the number of oscillations per minute that he uses in pumping his forearm/hand bars 110, a multi speed internal gear hub 449 can be positioned inside down tube 3. An example of such an internal multi-speed gear mechanism is a Sturmey-Archer multi-speed internal gear hub. This internal gear hub 449 may be connected on one of its 449 ends to the rear end of rotating drive line 229, and on its 449 opposite end to bevel gear 445a. The positioning of the internal gears for internal gear hub 449 can be controlled by a small cable that protrudes out of its 449 rear end, adjacent to the diagonally installed bevel gear 445b inside the down tube 3. This cable travels from inside the internal multi-gear hub 449, through the center of bevel gear 445a, to a lever 449a located outside of the down tube 3, and controlled by the rider through movement of the lever 449a, which moves the chain connecting it 449a with the internal hub gears 449. (See
On demand Dual Power riding is made possible through the installation of a one-way bearing 450. In Configuration III, the one-way bearing 450 is attached to the crank axle 35 on its inner race. The outer race is attached to the interior surface of the back of bevel gear 448b. (See
Some government and industry regulations require that the bicycle front wheel 18 be able to steer to its 18 right and left direction at a minimum of 45 degrees from its 18 center or straight forward position. Most currently designed front forks 19 will not permit the front wheel 18 to steer 45 degrees in combination with using a Dual Power drive train as enabled herein. The reason for this is that currently designed front forks 19 generally measure 3″ to 4″ at the crown, and 4″ to 5″ at the bottom, where they 19 attach to the front wheel 18 axle. The currently used 3″ to 4″ width at the crown in the forks 19 is too narrow for use with a Dual Power drive train and still be able to make a 45 degree turn. The reason for this is the top interior side of the front forks 19 will touch and conflict with the solid horizontal drive line 229 before the front wheel 18 has turned 45 degrees to its 18 right or left from its 18 center position. Thus, when a bicycle 1 or other vehicle uses a Configuration II or III Dual Power drive train, its front forks 19 will need to be wide enough at their crown to permit the forks 19 to steer the front wheel 18 at least 45 degrees to its 18 right or left before one of the forks 19 touches, or conflicts with, the horizontal solid drive line 229. The wider that the diameter of the solid drive line 229 is will require a larger opening in the crown of the front forks 19 than will a more narrow solid drive line 229. The bottom of the forks 19 can continue to accommodate currently used front wheel 18 axle widths.
In conjunction with the need for the front forks 19 to be wide enough at their crown to avoid conflicting with the solid drive line 229 in a 45 degree turn, the circumference of the turning track arc 124 needs to be sufficiently sized to accommodate both the 45 degree steering requirement as well as the additional length to accommodate the width of the carriage 125 and its rollers 125a during a left or right turn.
Although the above-preferred embodiments have been illustrated and described, persons skilled in the art will recognize that many changes to the specific embodiments disclosed above could be made without departing from the spirit of the invention. Therefor the invention is not limited thereto except insofar as such limitations are included in the following claims and allowable functional equivalents thereof.
This application is a continuation of the earlier U.S. Utility patent application entitled BICYCLE DUAL POWER TURNING TRACK, RACK, PINION, AND ONE-WAY BEARING PROPULSION SYSTEM, Ser. No. 15/484,519, filed Apr. 11, 2017, which is a continuation-in-part of the earlier U.S. Utility patent application entitled DUAL POWERED PROPULSION SYSTEM, Ser. No. 14/255,790, filed Apr. 17, 2014, now U.S. Pat. No. 9,580,137, and Ser. No. 15/484,519 claims priority to U. S. Provisional patent application entitled BICYCLE DUAL POWER RACK, PINION, AND ONE-WAY BEARING PROPULSION SYSTEM, Ser. No. 62/323,447, filed Apr. 15, 2016, the disclosures of which are hereby incorporated entirely herein by reference.
| Number | Date | Country | |
|---|---|---|---|
| 62323447 | Apr 2016 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 15484519 | Apr 2017 | US |
| Child | 16798922 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 14255790 | Apr 2014 | US |
| Child | 15484519 | US |
