US20150298015A1

US20150298015A1 - Systems and Methods Implementing Devices Adapted to Controllably Propel Themselves Through a Medium

Info

Publication number: US20150298015A1
Application number: US14/288,306
Authority: US
Inventors: Luc Bausch
Original assignee: Aeroracers Inc
Current assignee: Aeroracers Inc
Priority date: 2014-04-16
Filing date: 2014-05-27
Publication date: 2015-10-22
Also published as: CA2855037A1

Abstract

Systems and methods in accordance with embodiments of the invention implement devices adapted to propel themselves through a medium, where the path that they traverse can be advantageously controlled. In one embodiment, a device adapted to propel itself through a medium includes: a body; a drive mechanism coupled to the body; a propeller rotatably coupled to the drive mechanism; a first wing coupled to the body, the first wing being configured to generate a first lift; and a second wing coupled to the body, the second wing being configured to generate a second lift that is different than the first lift.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

The current application claims priority to U.S. Provisional Application No. 61/980,473, filed Apr. 16, 2014, the disclosure of which is herein incorporated by reference.

FIELD OF THE INVENTION

The present invention generally relates to devices that are adapted to propel themselves through a medium.

BACKGROUND

Toys are designed to provide entertainment, and sometimes an educational experience, and are undoubtedly enjoyed by many. One class of toys of particular interest encompasses aquatic toys configured to propel themselves through water (e.g. in a bath tub or a pool). For example, many young adults enjoy miniaturized, to-scale, radio-controlled boat toys that generally emulate the operation of actual boats. Notably, these aquatic toys can be particularly useful in that they can allow their users to develop a more intimate understanding of water and its unique properties. For instance, aquatic toys that propel themselves through water allow their users to develop a greater intuition for hydrodynamics. Indeed, as can be appreciated, toys that propel themselves through any fluid (e.g. air) allow their users to develop a greater intuition about the respective fluid, and at the same time allow their users to enjoy the inherent entertainment value that the toys can provide. Accordingly, the current state of the art can benefit from such devices that can more affordably and/or more advantageously propel themselves through a medium.

SUMMARY OF THE INVENTION

Systems and methods in accordance with embodiments of the invention implement devices adapted to propel themselves through a medium, where the path that they traverse can be advantageously controlled. In one embodiment, a device adapted to propel itself through a medium includes: a body; a drive mechanism coupled to the body; a propeller rotatably coupled to the drive mechanism; a first wing coupled to the body, the first wing being configured to generate a first lift; and a second wing coupled to the body, the second wing being configured to generate a second lift that is different than the first lift.
In another embodiment, the device further includes a vertical member coupled to the body.
In yet another embodiment, the body is an elongated body having a forward end, an aft end, and a characteristic width; and the diameter of the propeller is larger than the characteristic width of the elongated body.
In still another embodiment, the propeller is disposed proximate the aft end of the elongated body; and the vertical member is disposed proximate the aft end of the elongated body.
In still yet another embodiment, the elongated body defines a first side, and a second, opposing, side; and the first wing is coupled to the first side of the elongated body, and the second wing is coupled to the second side of the elongated body.
In a further embodiment, the first wing defines a positive angle of attack with respect to the forward end of the elongated body; and the second wing does not define a positive angle of attack with respect to the forward end of the elongated body.
In a still further embodiment, the second wing defines a negative angle of attack with respect to the forward end of the elongated body.
In a yet further embodiment, the elongated body includes a cavity portion.
In a still yet further embodiment, the cavity portion is cylindrical and has a diameter sized to accommodate a coin.
In another embodiment, the cavity has a diameter sized to accommodate a United States penny.
In still another embodiment, the drive mechanism includes an elastic member.
In yet another embodiment, the elastic member is elastic in torsion.
In still yet another embodiment, the drive mechanism is removably coupled to the elongated body.
In a further embodiment, the elongated body includes a plurality of coupling mechanisms, each of which allows the drive mechanism to removably couple with the elongated body.
In a still further embodiment, a method of assembling a device adapted to propel itself through a medium includes: inserting a first wing into a slot defined by a first body structure; inserting a second wing into a slot defined by a second body structure; where each of the first wing and second wing includes a wide portion; where the wide portion of the first wing is wider than the slot defined by the first body structure; where the wide portion of the second wing is wider than the slot defined by the second body structure; where at least one of the first wing and second wing includes an inset portion; arranging the first body structure and the second body structure such that at least some portion of the slots overlap and such that the wide portion of the first wing abuts the second body structure and the wide portion of the second wing abuts the first body structure; and affixing the arrangement whereby at least some portion of the slots overlap and the wide portion of the first wing abuts the second body structure and the wide portion of the second wing abuts the first body structure.
In a yet further embodiment, arranging the first body structure and the second body structure further includes arranging a third body structure between the first body structure and the second body structure, the third body structure defining a slot configured to house the wide portion of the first wing and the wide portion of the second wing.
In a still yet further embodiment, affixing the arrangement includes using at least one ratcheting action rivet to affix the arrangement.
In another embodiment, each of the first body structure, the second body structure, the third body structure, the first wing, and the second wing is planar.
In still another embodiment, the slot defined by the first body structure defines a positive angle of attack in the assembled device, and the slot defined by the second body structure defines a negative angle of attack in the assembled device.
In yet another embodiment, each of the first body structure, the second body structure, and the third body structure defines at least one cavity portion.
In still yet another embodiment, a kit for a device adapted to propel itself through a medium includes: a first body structure, defining at least one cavity portion and at least one slot; a second body structure, defining at least one cavity portion and at least one slot; a third body structure defining at least one cavity portion and at least one slot; a first wing defining a wide portion and an inset portion; a second wing defining a wide portion; a first panel for accessing the cavity portion; a second panel for accessing the cavity portion; a horizontal stabilizer; an elastic member; and a propeller.

BRIEF DESCRIPTION OF THE DRAWINGS

FIGS. 1A-1B illustrate a device adapted to propel itself through a medium in accordance with certain embodiments of the invention.

FIGS. 2A-2B illustrate the operation of a device adapted to propel itself through a medium in accordance with certain embodiments of the invention.

FIG. 3 illustrates a device that that is adapted to propel itself through a medium including a cavity portion for the insertion of pennies in accordance with certain embodiments of the invention.

FIGS. 4A-4C illustrate a device that can have its drive mechanism coupled to its body in any of a variety of configurations in accordance with certain embodiments of the invention.

FIGS. 5A-5B illustrate the operation of a device having two wings, each of which being configured to generate a different lift, where the device is configured to turn as it propels itself through a medium in accordance with certain embodiments of the invention.

FIG. 6 illustrates a device adapted to propel itself through a medium that includes aspects that reposition its wings during operation in accordance with certain embodiments of the invention.

FIGS. 7A-7L illustrate the assembly of a device adapted to advantageously propel itself through a medium in accordance with certain embodiments of the invention.

DETAILED DESCRIPTION

Turning now to the drawings, systems and methods for implementing devices adapted to advantageously propel themselves through a medium are illustrated. In one embodiment, a device adapted to propel itself through a medium includes a body, a propeller, and two wings, the two wings being configured to counteract rotational forces that may be imparted on the body by the propeller. In many embodiments, each of the two wings is configured to generate a different lift, and the two wings are thereby configured to counteract rotational forces that may be imparted on the body by the propeller. In numerous embodiments, a first wing defines a positive angle of attack, and a second wing defines a negative angle of attack, and the two wings are thereby configured to counteract rotational forces that may be imparted on the body by the propeller. In a number of embodiments, the body is elongated. In a plurality of embodiments, the propeller is driven by an elastic member that is elastic in torsion. In several embodiments, the body includes an accessible cavity portion that can accommodate the removable attachment of weights.
While a number of aquatic toys designed to propel themselves through water exist, many of them are burdened with any of a variety of shortcomings. For example, one type of aquatic toy is based on the emulation of a miniaturized—generally to-scale —submarine structure. In many instances, such miniaturized submarine structures are designed to propel themselves through water using a propeller, and frequently, the propellers are powered by the winding of the propeller—e.g. the propeller may be coupled to an elastic member that is elastic in torsion, such as a rubber band, such that the winding of the propeller stores energy in the band that is used to actuate the propeller. However, because these submarine toys endeavor to embody a generally to-scale submarine structure, the propellers are proportionally miniaturized in relation to the body of the submarine structure to an extent that they are difficult to handle and otherwise manipulate by their users (e.g. they may be difficult to wind); as a result, playing with such toys can be a frustrating experience, especially for impatient youths. Moreover, because of their relatively small surface area, the smaller propellers do not experience much water-resistance as they are propelling the toy through water—consequently, where the propellers are driven by stored elastic energy, the stored elastic energy may release relatively quickly as it drives the propeller, which in turn can result in a relatively high-speed propulsion, but for only a relatively short amount of time.
Another class of aquatic toys implements fish-like structures that are designed to propel themselves through water with the ‘wagging’ of a tail structure. However, such propulsion mechanisms are generally inefficient and may not be as versatile as a propeller.
The devices disclosed in the instant application overcome these shortcomings by implementing structures that incorporate propellers large enough to easily handle and manipulate, even for a child. Importantly, the rotation of such propellers can impart rotational forces on the propelled body that may result in its undesired rotation as it is being propelled. Thus, the propelled body can incorporate structures configured to counteract rotational forces that may be applied onto the propelled body by the propeller. In this way, devices that propel themselves through a medium using a propeller that is generally easy to handle and manipulate can be implemented, where the undesired rotation of the propelled body due to forces exerted by the propeller can be avoided. Additionally, the device can be configured such that the propeller can be easily reoriented relative to the body such that the trajectory of the device as it propels itself through a medium can be controlled. The structure of these devices, and their operation is now discussed in greater detail below.
Devices Adapted to Advantageously Propel through a Medium
In many embodiments of the invention, devices that are adapted to advantageously propel themselves through a medium are implemented. In numerous embodiments, the device include a body, a drive mechanism coupled to the body, a propeller rotatably coupled to the drive mechanism, and at least one structure configured to counteract rotational forces imparted on the body by the propeller. In numerous embodiments, the propelled body includes a pair of wings, each of which being configured to generate a different lift so as to counteract rotational forces that may be imparted on the propelled body by the propeller.
FIGS. 1A and 1B illustrate a device adapted to propel itself through a medium that includes a pair of wings, each of which being adapted to generate a different lift so as to counteract rotational forces that may be imparted on the propelled body by the propeller in accordance with an embodiment of the invention. In particular, FIGS. 1A-1B depict that the device 100 includes a body 102, a drive mechanism 104 coupled to the body, a propeller 106 coupled to the drive mechanism, a first wing 108 configured to generate a first lift, and a second wing 110 configured to generate a second lift. The device further includes a vertical member 112 that can stabilize the body as it propels itself through a medium.
A discussion of one of the principle modes of operation of the device facilitates an understanding of the utility of its configuration—FIGS. 2A-2B depict one way that the device depicted in FIGS. 1A-1B can operate. In particular, it is illustrated that the drive mechanism 104 actuates the rotation 202 of the propeller 106, which in turn causes the propulsion of the body 102 in a forward direction 204. For simplicity, assume that the device is operating in water. Although it should be clear that devices in accordance with embodiments of the invention may operate in any suitable medium. For example, in many embodiments, the device is adapted to propel itself through air. Importantly, Newton's third law of motion dictates that the force imparted by the drive mechanism on the propeller to cause its rotation results in an equal and opposite rotatable force on the drive mechanism 104 by the propeller 106. As the drive mechanism 104 is coupled to the body, the rotating force 206 can be transmitted to the body. In effect, the rotation of the propeller 202 is associated with a rotating force applied to the body 206 as it is propelled through a medium, which unless addressed, can cause an undesired rotation of the body in a direction opposing the rotation 202 of the propeller 106. Thus, the first wing 108 and the second wing 110 are configured to each generate a different lift 208, 210 such that the combination of their lifts results in forces that counteract the rotating force 206 on the body caused by the propeller 106. In particular, the first wing 108 has a positive angle of attack (i.e. with respect to the direction of motion) such that as it is propelled through a medium, the medium applies an upward force on the wing 108. Conversely, the second wing 110 has a negative angle of attack such that as it is propelled through a medium, the medium applies a downward force on the wing 110. Note that in the illustration, the first wing 108 is disposed on the left side of the body (relative to the forward direction), while the second wing 110 is disposed on the right side of the body. Accordingly, the combination of the upward force 208 and downward force 210 constitute a counter-rotational force that counteracts the rotating force 206. In this way, undesired rotation of the body can be hindered.
While FIGS. 1A-1B and 2A-2B illustrate a particular structure in accordance with certain embodiments of the invention, it should be clear that any of a variety of modifications and adjustments can be implemented within the scope of the invention. For instance, in many embodiments, the propeller has a length that is much longer than the width of the body. For example, in some embodiments, the length of the propeller is on the order of 5.5 inches, whereas the width of the body is on the order of 0.5 inches. As alluded to above, longer propellers are advantageous insofar as they may be more accessible and more easily maneuverable, especially by children. However, it should be noted that the length of the propeller is correlated with the rotating force that it can indirectly impart on the body—i.e. the longer the propeller, the more rotating force that it imparts on the body. Thus, where longer propellers are implemented, the structures that provide a counter-rotational force must be configured to provide a correspondingly larger counteracting rotating force. In a number of embodiments, the device includes a pair of wings that have a relatively short length—e.g. a first wing can have a positive angle of attack while a second wing can have a negative angle of attack. As the pair of wings can be particularly configured to provide a counteracting rotational force, they do not have to be relatively lengthy to achieve a stabilizing effect. In some embodiments, each of the pair of wings has a length of approximately 2.75 inches. While certain dimensions for the length of the propeller, the length of each of a pair of wings, and the width of the body are referenced, propellers of any suitable length, wings of any suitable length, and bodies of any suitable width can be incorporated in accordance with embodiments of the invention.
While FIGS. 1A-1B and 2A-2B depict a body having a cylindrical shape, the body that is configured to be propelled can be of any suitable shape. In many embodiments, the body is planar, for example having a width of 0.5 inches, a height of 3.25 inches, and a length of 12 inches. In many embodiments, the body is elongated having a forward end (the body being configured to propel in the direction of the forward end) and an aft end, where the propeller is disposed proximate the aft end. In some embodiments, the propeller is disposed proximate the forward end. In many embodiments, the shape of the body in conjunction with the shape of any structures that are configured to apply a counter-rotational force to counteract rotational forces applied to the body by the propeller, emulate the shape of one of: a marine animal, a boat, a plane, a car, a land animal, and a spacecraft. Thus, toy animals and vehicles may be implemented. For example, in many embodiments, the shape of the body in conjunction with structures that are configured to apply a counter-rotational force emulates the shape of one of: a killer whale, a clown fish, a penguin, an alligator, a turtle, a submarine, a cruise ship, a ghost ship, a battleship, a sports car, a biplane, a fighter plane, and a spacecraft. In a number of embodiments, the shape of the body in conjunction with any structures that are configured to apply a counter-rotational force is relatively planar; thus, for example, a device in the shape of a manta ray can be implemented. Where the shape of a taller structure, e.g. a cruise ship structure, is implemented, the counter-rotational structures can work particularly well to inhibit undesired rotation of the body and thereby maintain the upright orientation of the ship as it propels itself through water. Of course, although certain shapes have been referenced, it should be clear that any suitable shape may be implemented in accordance with embodiments of the invention.
The body can be made of any suitable material in accordance with embodiments of the invention. For example, in many embodiments, the body is made from water-resistant Italian Poplar—its water-resistance and overall buoyancy can make it an effective material from which to form the body of a device that is adapted to operate in water. In a number of embodiments, the body is made from Baltic Birch plywood. Where plywood is used, it is preferable that any constituent glue that is incorporated in the plywood is water-resistant if the device is intended to operate in water. Where the device is intended to operate in water, it may be preferable that a buoyant material is used. Although, it should be clear that any suitable material may be used. In some embodiments, where the device is intended to operate in water, the body is made from a non-buoyant material but the body includes cavities that reduce its overall mass. In this way, the body can be configured such that it is buoyant in spite of the fact that it includes non-buoyant materials. In a number of embodiments, aspects of the device that are intended to be entirely submerged in, e.g. water, are made from non buoyant materials. For example, the propeller fins and/or wings of the device can be made from non-buoyant materials (e.g. clear plastic material). Although aspects of the device are made from non-buoyant materials, the device overall may nonetheless be buoyant—e.g. the remainder of the device may be constructed from buoyant materials, or alternatively, cavities may be incorporated into the device to provide buoyancy. In some embodiments, a more dense material is used where it is desired that the device operate at a specified lower depth under water. Indeed, the material can be chosen based on the desired operation depth in accordance with embodiments of the invention.
In a number of embodiments, the body includes at least one cavity portion, sized for the insertion of weights. Accordingly, weights may be inserted into the device to thereby control the depth at which the device propels itself through a medium (e.g. the depth at which the device propels through water). For example, more weight may be added to cause the device to operate at a lower depth, while fewer weights (or no weights) can be added to cause the device to operate at a relatively higher depth. Moreover, weights that are added can serve as ballast that stabilizes the orientation of the device. Notably, cavity portions may be disposed proximate the center of mass of the device such that weights that are inserted into the cavity portion do not act to apply a downward force that disorients the device. In some embodiments, cavity portions are included forward and/or aft of the center of gravity—in this way, weights may be added to the respective forward or aft cavities to control the orientation (e.g. angled downward or upward) of the device as it propels itself through a medium. In numerous embodiments, the cavity within the body is sized for the insertion of a common trinket. For example, in many embodiments, the body includes a cavity portion sized for the insertion of U.S. pennies, which are commonly available; in this way, users can more readily configure the operation depth of the device. In a number of embodiments, the cavities are accessible by the medium when the device is exposed to the medium. Thus, for example, where a device is adapted to propel itself through water, the included cavities are accessible by the water when the device is placed in water so that the cavities do not undesirably trap air, which may have the effect of altering the buoyancy properties of the device and thereby undesirably disorienting it.
FIG. 3 illustrates a body including several cavity portions. In particular, it is illustrated that the body 302 includes a portion that includes five cylindrical cavities 314, each sized to accommodate the insertion of pennies 316. The cylindrical cavities can be of any depth so that they can each accommodate a plurality of pennies (thereby allowing relatively more weight to be added). Additionally, pennies can be selectively disposed in the aft or forward cavities to control the angle of the device as it propels through a medium. As alluded to previously, the pennies may also serve as ballast for the device. Of course, as can be appreciated, the cavities can be sized for the insertion of any suitable coin, not just pennies. Indeed, the cavity portion can be sized to accommodate any common trinket. More generally, the cavity portion can be sized to accommodate the insertion of any weight. In this way, the operation depth of the device can be controlled, the device can be stabilized, and its orientation as it is propelled through a medium can be controlled.
In many embodiments, the devices are adapted to propel themselves through water, and include ballast chambers that are configured to fill with water when the device is immersed in water. The water-filled-ballast chambers thereby reduce the buoyancy of the device while it is being operated. The reduction in buoyance can, for example, prevent the device from undesirably entirely emerging from the water and floating on the surface. Of course, it should be clear that in many instances, when in proper operation, part of the device will be submerged in water, and part of the device will be above the water level. In many instances, the ballast chambers are strategically located so as to control the orientation of the device as it is submerged in water. It should also be understood that in many instances, the devices include both cavities sized for the insertion of weights and ballast chambers—these aspects can allow the operating depth and the overall buoyancy of the device to be determined.
As referenced previously, structures can be incorporated onto the body that provide a counter-rotating force in accordance with embodiments of the invention. For example, as can be appreciated from the above discussion, a pair of wing structures, each providing a different lift can be incorporated. For example, in some embodiments, a first wing has a positive angle of attack (e.g. relative to a forward direction) so as to generate an upward lift, while a second wing is configured to have a negative angle of attack to generate a downward lift to thereby counteract any undesired rotation of the body. The wings can be disposed on opposing sides of the body so that they can provide a counter-rotational force in accordance with embodiments of the invention. As alluded to previously, they do not have to be lengthy to achieve the stabilizing effect; that they are each configured to provide a different lift may be suitable in and of itself to achieve the desired effect. In some embodiments, the length of each wing is less than approximately one-third of the length of the body. In numerous embodiments, the length of each wing is less than one-fourth of the length of the body. Of course, the wings can be configured in any suitable way to provide a counter-rotational force in accordance with embodiments of the invention. For example, in some embodiments, a first wing and a second wing have the same polarity in terms of angle of attack, but are configured to generate different magnitudes of lift. Accordingly, the first wing and second wing can thereby counteract a rotational force imposed by the propeller on the body. In some embodiments, one wing has a neutral angle of attack, while another wing has either a positive or negative angle of attack. The wing having the positive or negative angle of attack can thereby generate a lift that opposes the rotational force on the body caused by the propeller. In a few embodiments only a single wing is used to generate a single lift that counteracts rotational forces on the body that may be caused by the propeller. In some embodiments, a pair of wings is disposed on a single side of the body, and is used to generate the lift that counteracts rotational forces on the body that may be caused by the propeller. In a number of embodiments, an asymmetric distribution of wings is adjoined to the body to generate the counteracting rotational forces. In many embodiments, the device includes four wings to generate counteracting rotational forces —two of which disposed at the forward end of the device and two of which disposed at the aft end of the device. In this arrangement, the two pairs of wings can balance the device. In a number of embodiments, the wings are in a biplane arrangement. While several wing arrangements are discussed that may be implemented to counteract rotational forces that may be imparted by the propeller on the body, any suitable structure that is configured to counteract those rotational forces may be implemented in accordance with embodiments of the invention, and they may be implemented in any suitable configuration.
Additionally, it should be noted that, where wings are incorporated, the wings can adopt any suitable configuration. For example, incorporated wings can be swept, forward swept, or straight. Additionally, the wings can be delta wings. Generally, any suitable wing configuration can be implemented in accordance with embodiments of the invention.
The propeller can be driven by any suitable drive mechanism in accordance with embodiments of the invention. For example, in many embodiments, the drive mechanism includes an elastic member that is elastic in torsion. Thus, the elastic member can be ‘wound up’ to store energy in its elasticity; the stored elastic energy can then be released to cause the rotation of the propeller. For example, where the device is configured to propel itself through water, the elastic member can be rotated in torsion so as to ‘wind it up’, the device can then be submerged in water, and the tension in the elastic member can then be released so as to apply a rotational force to the coupled propeller. Notably, when such devices include longer propellers, the length of the propeller can experience sufficient resistance from the water that slows the rotation of the propeller. In essence, the water can inhibit the immediate release of the elastic energy in the elastic member, and can instead cause the gradual sustained rotation of the propeller thereby enabling the device to be gracefully propelled through the water for a more extended period of time. In some embodiments, the elastic member can cause the gradual sustained propulsion of the device for longer than 10 minutes. Further, drive mechanisms based on elastic members may be further advantageous insofar as they may be waterproof, and thereby particularly suitable for devices configured to operate in water. As can be appreciated, where the drive mechanism couples to the body, it is preferable that the body be sufficiently rigid to be able to accommodate the drive mechanism without failing (e.g. without cracking). For example, where an elastic member defines the drive mechanism, and the elastic member couples to the body, the tension in the elastic member should not contort the body to an extent that the body cracks—at least when the propeller is not wound. As can be appreciated, the body should be sufficiently rigid to withstand the tension in the elastic member caused by the winding of the propeller to some reasonable extent such that the device can operate as desired. While a drive mechanism based on an elastic member has been discussed and illustrated, any suitable drive mechanism can be implemented. For example, drive mechanisms based on pneumatic devices may be implemented. In general, any drive mechanism that that can activate the rotation of a propeller can be implemented in accordance with embodiments of the invention.
In many embodiments, the body is configured such that the drive mechanism is removably coupled to it in any of a plurality of configurations, such that the location of the propeller that is coupled to the drive mechanism with respect to the body is controlled. In this way, the path that the device traverses as it propels itself through a medium can be controlled. For instance, in some embodiments, the body includes a plurality of attachment points such that the propeller can be located either centrally, towards the left side of the body, or towards the right side of the body. Thus, for example, the device will traverse a different path when the propeller is disposed towards the left side of the body than it would if the propeller was disposed centrally.
FIGS. 4A-4C illustrate a device where the drive mechanism can be removably attached to the body in any of a variety of configurations. In particular, FIG. 4A depicts that the device 400 includes a body 402 with a drive mechanism 404 that is configured to removably couple with the body at each of two attachment points 420, 422. In FIG. 4A, the attachment points 420, 422 are parallel to the length of the body; as a result the propeller 406 is disposed perpendicularly to the length of the body. Thus, the propeller 406 causes the body to propel generally straight in a forward direction. FIG. 4B depicts that the drive mechanism is coupled to the body at different attachment points 420 and 424. In this configuration, the drive mechanism 404 and central axis of the propeller 406 are angled with respect to the length of the body 402 such that the propeller 406 is towards the left side of the body 402 and is angled so that its diameter faces the body 402. This configuration causes the device 400 to turn left as it propels itself through a medium so as to traverse a circular path. Similarly, FIG. 4C depicts that the drive mechanism is coupled to the body at different attachment points 420, 426. In this configuration, the drive mechanism and central axis of the propeller 406 are angled with respect to the length of the body such that the propeller is towards the right side of the body 402 and is angled so that its diameter faces the body 402. This configuration causes the device to turn right as it propels itself through a medium so as to traverse a circular path.
Notably, where the device includes a first wing and a second wing, each of which is configured to generate a different lift, the turning of the device as it propels itself through a medium can cause the device to change its depth. For example, when the device is turning, one of the wings will be moving at a faster speed than the other (e.g. when the device is turning left—the right wing will be moving at a faster speed), and the lift that the faster moving speed generates will be correspondingly higher
FIGS. 5A-5B depict the operation of a device that includes two wings, one of which configured to generate an upward lift, and the other of which configured to generate a downward lift. In particular, FIG. 5A depicts that the device 500 has a propeller 506 that is disposed toward the left side of the body 502 such that it causes the device 500 to turn left as it propels itself through a medium. Notably, as the device 500 is turning left, its second wing 510 is moving faster than its first wing 508; consequently the second wing 510, having a negative angle of attack, generates a higher magnitude of lift, albeit in a downward direction, than that of the first wing 508, which has a positive angle of attack. As a result, the device tends downwards as it turns left such that the device essentially traverses a downward spiraling path.
By contrast, when the same device 500 is configured to turn right, the upward lift generated by the first wing 508 is greater in magnitude than the downward lift generated by the second wing 510. Thus, the device tends upwards as it turns right such that the device essentially traverses an upward spiraling path.
In a number of embodiments, the body is flexible such that the drive mechanism can flex the body. For example, referring back to FIG. 4B, the drive mechanism 404 may constitute an elastic member that attaches at attachment points 402 and 424, such that tension of the elastic member causes the forward end of the body to bend left. When the device bends to the left while being propelled, the trajectory illustrated and described with respect to FIG. 5A can be exaggerated—e.g. the device can have a smaller turning radius and can dive at a steeper angle. Similarly, the drive mechanism may bend the body to the right, such that the trajectory illustrated and described with respect to FIG. 5B can be exaggerated. In a number of embodiments, the body of the device is made of a material that becomes flexible to an extent that the above-described effect is manifested when the body is saturated with water beyond some threshold extent.
In several embodiments, where the drive mechanism is centrally disposed, e.g. as seen in FIG. 4A, the orientation of the propeller (the propeller being disposed at the aft end) is such that its lower portion is slightly more forward and its upper portion is slightly more aft; as a result, the propeller can inspire a downward trajectory for the device as it propels through water. In other words, the face of the propeller is angled upwards with respect to the forward end of the device. As before, where the drive mechanism includes an elastic member coupled to the body, the body of device may be sufficiently flexible (or can become sufficiently flexible, e.g. by being immersed in water) such that the tension of the elastic member can cause the body to flex downward and exaggerate the tendency to dive.
In some embodiments where the propeller is slightly facing upward, the blades of the propeller may cause the device to yaw slightly to the left as it is propelled forward. For example, the device may be configured such that the counterclockwise rotation of the propeller (viewed from the aft end looking forward) causes the forward propulsion of the device. Accordingly, the upward swinging blade, disposed on the left side of the device, has a greater angle of attack as it moves through the medium, and this causes the device to slightly yaw to the left. As can be appreciated from the above discussion, where the device is turning left, the effect of a wing that is disposed on the right side may be pronounced, since it will be traveling at a relatively faster speed.
Although certain aspects for controlling the trajectory have been described, it should be clear that any of a variety of devices can be incorporated in accordance with embodiments of the invention. For example, in many embodiments, the device includes a vertical member disposed at the aft end of the body that can pivot left or right act and thereby act as a rudder to control the trajectory of the device. For instance, the vertical member may be pivoted left and thereby cause the device to turn left as it is propelled through a medium. In general, any of a variety of structures can be incorporated to help further control the trajectory in accordance with embodiments of the invention.
In a number of embodiments, the device includes a biasing member that biases the positioning of the propeller; the extent of the bias can vary during the propulsion of the device. For example, where the propeller is driven by an elastic member that is elastic in torsion and that uses stored strain energy to drive the propeller, the biasing member may be a function of the stored strain energy in the elastic member. For instance, where the elastic member is a rubber band, the propeller may be wound to store strain energy in the rubber band—doing so increases the tension that the rubber band exerts on the propeller, which makes it less susceptible to the influence of the biasing member that acts to reposition the propeller. However, as the stored strain energy is released to actuate the propeller, the tension in the rubber band may decrease and make the propeller more susceptible to the repositioning effect of the biasing member. The repositioning of the propeller consequently affects the trajectory of the device. For example, the biasing member can operate such that whereas the initial trajectory of the propelled device may be downward, as the tension in the elastic member that drives the propeller releases, the biasing member can reposition the propeller such that the trajectory of the device becomes upward. Of course, it should be understood that the biasing member can alter the trajectory in any number of ways in accordance with embodiments of the invention. For example, the trajectory can be controlled such that the device initially bears right, and subsequently turns left. As can be appreciated, any number of biasing members can be incorporated in accordance with embodiments of the invention to control the trajectory of the device as it propels through a medium.
Similarly, in numerous embodiments, the device includes a biasing member that biases the positioning of structures configured to provide counter-rotational forces; similar to before, the extent of the bias can vary during the propulsion of the device. Accordingly, the direction of propulsion can vary over time. As can be appreciated, the operating principles for these configurations are similar to those described above. For example, in many embodiments, a device includes wings and is driven by an elastic member (e.g. a rubber band) in conjunction with a propeller. The wings include attachment points which accommodate the elastic member, such that when the elastic member is taut, the wings adopt a first position, but when the elastic member is relieved of strain energy, the wings are repositioned, which consequently alters the path of traversal. In many embodiments, a distinct biasing mechanism can influence the repositioning of the wings.
FIG. 6 depicts a device that is configured so that the positioning of its wings can vary during its propulsion. In particular, the illustration depicts a device adapted to propel itself through a medium 600 having a first wing 608 and a second wing (not shown). Incidentally, the device 600 emulates the shape of a submarine. Importantly, the first wing 608 includes two attachment points 630, 632 that can accommodate an elastic member 604 that acts as the drive mechanism for the device 600, and the first wing 608 is rotatable such that pressure applied on the wing 608 at the either of the attachment points can impact the angle of attack of the wing 608. The device 600 further includes a member that is elastic in torsion 640 that acts to bias the angle of attack of the first wing. The second wing (not shown) also includes a corresponding torsionally elastic member. The wings also include stopping features 650 that are designed to constrain the maximum and minimum angles of attack. In essence, when the elastic member 604 is wound to initiate the operation of the device, the taut elastic member 604 applies pressure on the respective wings to influence the angle of attack. However, during operation as the elastic member 604 relieves itself of stored strain energy, the relative pressure of the torsionally elastic members (relative to the pressure applied by the drive mechanism elastic member) increases in magnitude and thereby acts to reposition the wings during the propulsion. Of course, it should be appreciated that any of a variety of mechanisms can be used to reposition either the structures configured to provide a counter-rotational force or the propeller during the propulsion of the device in accordance with embodiments of the invention; for example, it is not necessary that a torsionally elastic member be used to bias the positioning of a wing—in general any of a variety of biasing members can be implemented.
Accordingly, it is seen that the above-discussed devices can allow greater control over trajectory of the device as it propels through a medium. Notably, although the operation of the device has been discussed with respect to water, it should be clear that the device can be adapted to propel through any suitable medium. For example, in many embodiments, the device is adapted to propel through air. While the above discussion has regarded the structure of devices that are adapted to advantageously propel through a medium, in many embodiments, methods for assembling such devices are provided. These methods are now discussed in greater detail below.
Methods for Assembling Devices that are Adapted to Advantageously Propel Themselves through a Medium
While the above-described devices can be educational and entertaining, they may also be made to be assembled in a convenient fashion. Accordingly, in many embodiments, methods for conveniently assembling devices that are adapted to advantageously propel themselves through a medium are provided. In many embodiments, planar structures are assembled to construct devices that can advantageously propel themselves through a medium. In numerous embodiments, the devices can be assembled without the use of adhesive substances; the assembly can thereby be made safer for younger children. In some embodiments, a first body structure includes a first slot that accommodates the insertion of a first wing, and a second body structure includes a second slot that accommodates the insertion of a second wing. Each of the first body structure and second body structure includes an inner side and an opposing outer side—the outer side being the side from which the wing will protrude in the final assembled configuration. In some embodiments, the first body structure becomes the left side of the fully assembled device, whereas the second body structure becomes the right side of the fully assembled device. The structure of the respective wings can be such that their respective widest dimension is wider than the respective slots. Accordingly, where each wing is inserted into a respective slot from the inner side and through to the outer side, at least some nominal portion of it does not pass through and is retained on the inner side. Recall that the device is not necessarily symmetrical; thus, for example, each wing may be adapted to provide a different lift by having a different angle of attack. For example, the first slot may be angled upwards such that it causes the wing to have a positive angle of attack, while the second slot may be angled downwards such that it causes the wing to have a negative angle of attack. In essence, the nominal portions of the wing do not necessarily entirely coincide. Although, in many embodiments, at least some portion of the slots overlap. Accordingly, at least one of the nominal portions includes an inset region; the inset region on the nominal portion of one wing can allow the wing to interface with the nominal portion of the other wing such that each nominal portion abuts the opposing side. In other words, whereas the wide portions of the wings that do not pass through the slot would otherwise coincide and interfere with each other, the inset region allows the wings to accommodate one-another and abut the opposing body structure. The respective bodies and the wings may be fastened in this configuration.
As can be appreciated, the above-described process can be implemented and modified in any of a variety of ways in accordance with embodiments of the invention. For example, in many embodiments, a third body structure is used to provide structural rigidity. FIGS. 7A-7L depict the assembly of a device adapted to propel through a medium, where a third spacer body is used to provide structural rigidity to the device. In particular, FIG. 7A depicts a kit that includes the components that are assembled to form the device. Specifically, the illustrated kit includes, a first body structure 702, a second body structure 704, a third body structure 706, a first wing 708, a second wing 710, a first panel for accessing the cavity portion 712, a second panel for accessing the cavity portion 714, a horizontal stabilizer 716, an elastic member 718, and a propeller 720. The kit further includes fastening members that can be used to adjoin the various components to form the device. In particular, ratcheting action rivets 722 can be used to permanently affix a configuration, while screws 724 and nuts 726 can be used to removably attach components. Of course, it should be clear that any suitable fastening members may be used in accordance with embodiments of the invention.
FIG. 7B depicts a magnified view of the first body structure 702 in the kit. Note that the first body structure 702 is intended to define the left side of the device, is in the shape of a fish, and is patterned with a fish design. Of course, as referenced to above, the device can adopt any suitable shape in accordance with embodiments of the invention, and is not limited to emulating the shape of a fish. The first body structure 702 includes a slot 751 that accommodates the insertion of the first wing 708. In the illustrated embodiment, the slot 751 is angled upwards so as to cause the first wing 708, when inserted, to adopt a positive angle of attack. Conversely, the second body structure 704, depicted in FIG. 7C, includes a slot 753 that is angled downward such that when the second wing 710 is inserted, it adopts a negative angle of attack. In this way, each of the two wings can provide a different lift. Of course, as discussed previously, the wings can be configured to provide a different lift in any suitable way in accordance with embodiments of the invention. The first body portion 702 and second body portion 704 each include holes 755 that define cavity portions that can accommodate weights which can be used to alter the performance characteristics of the device as discussed previously. Additionally, the first body structure 702 and second body structure 704 additionally include holes 757 that allow the first panel 712 and second panel 714 to be removably attached. For example, a system of screws 724 and nuts 726 can be used to removably attach the panels 712, 714. The first body structure 702 and second body structure 704 additionally include holes that can allow the first body structure 702, the second body structure, and the third body structure 706 to be permanently attached. For example a system of ratcheting action rivets 722 can be used to permanently attach the body structures 702, 704, 706. Using screws 724, nuts 726, and ratcheting action rivets 722 to adjoin the structures is advantageous insofar as they can allow the structures to be coupled without the use of potentially toxic adhesives. Of course, it should be clear that any fastening mechanisms can be used to adjoin members in accordance with embodiments of the invention.
FIGS. 7D-7E depict magnified views of the first wing 708 and the second wing 710 respectively. Notably, the first wing 708 includes a wide portion 761 that includes an inset portion 763. The wide portion 761 is wider than the opening of the slot 751 on the first body structure 702. Similarly, the second wing 710 also includes a wide portion 765 that is wider than the opening of the slot 753 on the second body structure 704. The second wing also includes an inset portion 767. Although in the illustrated embodiment, each wing 708, 710 includes an inset portion, in many embodiments, only one of the first wing and second wing includes an inset portion.
FIG. 7F depicts the insertion of the wings 708, 710 in the respective body structures 702, 704. Importantly, note that the wide portions 761, 765 prevent the respective wings 708, 710 from passing entirely through the respective body structures 702, 704. Additionally, note that when the device is arranged, the middle portion of the slots 751, 753 overlap and thereby define an X-pattern.
FIG. 7G depicts a magnified view of the third body structure 706. In the illustrated embodiment, the third body structure is intended to be disposed in between the first body structure 702 and the second body structure 704. However, in many embodiments, the third body structure is not so disposed. Indeed, in some embodiments, there is no third body structure. Instead, the device is assembled with first and second body structures. Notably, the third body structure 706 includes an X-shaped slot 771. The X-shaped slot 771 is intended to house each of the two nominal wing portions 761, 765 that are too wide to pass through the respective body structures 702, 704. In particular, the X-shaped slot 771 includes a region 773 that houses the wide portion of the first wing 761 having a positive angle of attack, and further includes a region 775 that houses the wide portion of the second wing 765. The third body structure 706 also includes a vertical stabilizer portion 777, and a slot that accommodates the insertion of a horizontal stabilizer 716. The third body structure 706 also includes attachment points 781, 783 that can allow the elastic member 720 to couple to the body. Additionally, the third body structure also includes holes that define cavity portions 755, holes that allow panels 712, 714 to be removably attached to the device, and holes that allow the first body structure 702, the second body structure 704, and the third body structure 706 to be permanently affixed.
FIG. 7H depicts that the slot 771 in the third body structure 706 has accommodated the wide portion of the second wing 710. Notably, the inset portion 767 is recessed and would not interfere with the subsequent accommodation of the wide portion of the first wing 761. By contrast, if neither the first wing 708 or the second wing 710 included inset portions 763, 767, then their respective wide portions 761, 765 may interfere and inhibit the assembly.
FIG. 7I depicts an isometric view of the partially assembled device including body structures 702, 704, 706, and the wings 708, 710.
FIG. 7J depicts a view of the partially assembled device including the removably attached panels 712 (the second panel 714 being out of view), and the attached horizontal stabilizer 716. In the illustrated embodiment, the panels have been attached using a system of screws 724 and nuts 726. The horizontal stabilizer 716 has been inserted into the slot in the third body structure 706.
FIG. 7K depicts a magnified view of the horizontal stabilizer 716. The horizontal stabilizer 716 includes attachment points 785, 787 that can allow the drive mechanism to steer the device either left or right, respectively, in the manner described above.
FIG. 7L depicts the assembled device including the elastic member 718 that acts as the drive mechanism, and the propeller 720. Ratcheting action rivets 722 have been used to affix the configuration. In the illustrated embodiment, the elastic member 718 is shown coupled to the body at attachment points 781 and 783, although it could have been attached at attachment points 785 and 787 if desired.
While the assembly of a particular device in accordance with embodiments of the invention has been illustrated and discussed, it should be clear that the assembly techniques described herein can be implemented in any of a variety of ways in accordance with embodiments of the invention. For example, in many embodiments, a third body structure providing structural support is not incorporated. In a number of embodiments, fastening components other than ratcheting action rivets are used to adjoin the members. Additionally, it should be clear that the described techniques are applicable to wings that overlap in any of a variety of ways—it is not necessary that the wings be configured to overlap to define an X-shaped pattern. For example, in many embodiments, the tip portions of the wings overlap (e.g., as opposed to the middle portions of the wing overlapping, which would result in an X-shaped pattern). In general, the description with respect to FIGS. 7A-7L is meant to be illustrative and not exhaustive.
The devices described herein can be enjoyed in any of a variety of ways in accordance with embodiments of the invention. One such example is now discussed below.

‘Fishing’ of Devices Adapted to Controllably Propel Themselves

As can be appreciated, the above described devices can be enjoyed in any of a variety of ways in accordance with embodiments of the invention. For instance, in many embodiments, the device is operated in water, and users can ‘fish’ for the device. Any sort of fishing apparatus can be used. In many embodiments, an elastic loop (e.g. a rubber band) is used to capture the propelled device. As can be appreciated, the diameter of the loop can be sized appropriately so that it can encompass at least some portion of the device. A weight can be coupled to the elastic loop to cause it to sink into the water; in many embodiments a key ring is coupled to the elastic loop and serves as the weight that causes the elastic loop to sink into the water. A fishing rod and reel (or equivalent, e.g. a toy fishing rod/reel) can further be used to control the loop, and position it at the desired depth (e.g. the depth at which the device is travelling). The loop can be lowered in to the water so as to intercept the propelled device; where the device has travelled into the loop, the loop can be raised (e.g. via the fishing rod/reel), and the device can thereby be ‘caught.’ In many embodiments, the loop is sufficiently pliable such that when it is raised (e.g. via a fishing rod/reel), the applied tension causes the loop to enclose. Thus for example, where the device has travelled within the loop and the loop is raised, the applied tension can cause the loop to enclose and thereby further secure the device as it is being ‘caught.’ In this way, a fishing game can be implemented with the above-described devices. Of course, it should be clear that the above-described devices can be implemented in any of a variety of ways in accordance with embodiments of the invention.
More generally, as can be inferred from the above discussion, the above-mentioned concepts can be implemented in a variety of arrangements in accordance with embodiments of the invention. Accordingly, although the present invention has been described in certain specific aspects, many additional modifications and variations would be apparent to those skilled in the art. It is therefore to be understood that the present invention may be practiced otherwise than specifically described. Thus, embodiments of the present invention should be considered in all respects as illustrative and not restrictive.

Claims

What is claimed is:

1. A device adapted to propel itself through a medium comprising:

a body;

a drive mechanism coupled to the body;

a propeller rotatably coupled to the drive mechanism;

a first wing coupled to the body, the first wing being configured to generate a first lift; and

a second wing coupled to the body, the second wing being configured to generate a second lift that is different than the first lift.

2. The device adapted to propel itself through a medium of claim 1, further comprising a vertical member coupled to the body.

3. The device adapted to propel itself through a medium of claim 2, wherein:

the body is an elongated body having a forward end, an aft end, and a characteristic width; and

the diameter of the propeller is larger than the characteristic width of the elongated body.

4. The device adapted to propel itself through a medium of claim 3, wherein:

the propeller is disposed proximate the aft end of the elongated body; and

the vertical member is disposed proximate the aft end of the elongated body.

5. The device adapted to propel itself through a medium of claim 4, wherein:

the elongated body defines a first side, and a second, opposing, side; and

the first wing is coupled to the first side of the elongated body, and the second wing is coupled to the second side of the elongated body.

6. The device adapted to propel itself through a medium of claim 5, wherein:

the first wing defines a positive angle of attack with respect to the forward end of the elongated body; and

the second wing does not define a positive angle of attack with respect to the forward end of the elongated body.

7. The device adapted to propel itself through a medium of claim 6, wherein the second wing defines a negative angle of attack with respect to the forward end of the elongated body.

8. The device adapted to propel itself through a medium of claim 5, wherein the elongated body comprises a cavity portion.

9. The device adapted to propel itself through a medium of claim 8, wherein the cavity portion is cylindrical and has a diameter sized to accommodate a coin.

10. The device adapted to propel itself through a medium of claim 9, wherein the cavity has a diameter sized to accommodate a United States penny.

11. The device adapted to propel itself through a medium of claim 10, wherein the drive mechanism comprises an elastic member.

12. The device adapted to propel itself through a medium of claim 11, wherein the elastic member is elastic in torsion.

13. The device adapted to propel itself through a medium of claim 12, wherein the drive mechanism is removably coupled to the elongated body.

14. The device adapted to propel itself through a medium of claim 13, wherein the elongated body comprises a plurality of coupling mechanisms, each of which allows the drive mechanism to removably couple with the elongated body.

15. A method of assembling a device adapted to propel itself through a medium comprising:

inserting a first wing into a slot defined by a first body structure;

inserting a second wing into a slot defined by a second body structure;

wherein each of the first wing and second wing comprises a wide portion;

wherein the wide portion of the first wing is wider than the slot defined by the first body structure;

wherein the wide portion of the second wing is wider than the slot defined by the second body structure;

wherein at least one of the first wing and second wing comprises an inset portion;

arranging the first body structure and the second body structure such that at least some portion of the slots overlap and such that the wide portion of the first wing abuts the second body structure and the wide portion of the second wing abuts the first body structure; and

affixing the arrangement whereby at least some portion of the slots overlap and the wide portion of the first wing abuts the second body structure and the wide portion of the second wing abuts the first body structure.

16. The method of claim 15, wherein arranging the first body structure and the second body structure further comprises arranging a third body structure between the first body structure and the second body structure, the third body structure defining a slot configured to house the wide portion of the first wing and the wide portion of the second wing.

17. The method of claim 16, wherein affixing the arrangement comprises using at least one ratcheting action rivet to affix the arrangement.

18. The method of claim 16, wherein each of the first body structure, the second body structure, the third body structure, the first wing, and the second wing is planar.

19. The method of claim 18, wherein the slot defined by the first body structure defines a positive angle of attack in the assembled device, and wherein the slot defined by the second body structure defines a negative angle of attack in the assembled device.

20. The method of claim 19, wherein each of the first body structure, the second body structure, and the third body structure defines at least one cavity portion.

21. A kit for a device adapted to propel itself through a medium comprising:

a first body structure, defining at least one cavity portion and at least one slot;

a second body structure, defining at least one cavity portion and at least one slot;

a third body structure defining at least one cavity portion and at least one slot;

a first wing defining a wide portion and an inset portion;

a second wing defining a wide portion;

a first panel for accessing the cavity portion;

a second panel for accessing the cavity portion;

a horizontal stabilizer;

an elastic member; and

a propeller.