FOOTWEAR WITH INTERFACE FOR ATTACHING DEVICES
Footwear for use with a plurality of footwear-mounted devices, a combination of footwear and footwear-mounted devices, and footwear-mounted devices. In some cases, the footwear may include a heel portion and forefoot portion that may be independently coupled in a locked engagement with the footwear-mounted devices. In one embodiment, the footwear-mounted device may be slidably coupled with the heel receiver and/or the forefoot receiver with an insertion motion that is substantially coplanar with the footwear's sole.
This application claims the benefit of U.S. Provisional Application Ser. No. 61/165,234, filed Mar. 31, 2009, the entire disclosure of which is hereby incorporated by reference.
TECHNICAL FIELDThis disclosure generally relates to footwear. In particular, this disclosure relates to footwear and various devices that can be releasably mounted to the footwear, such as skis, skates, bungee harnesses, snowboards, protective shields, etc.
BACKGROUNDFootwear that allow devices, such as skates and skis, to be releasably mounted is well known in the art. One approach in the art is including a fastening structure in the device being mounted to the footwear. For example, water skis may include foot collars and roller skates may include cage-type shoe retainers. These types of external fasteners are awkward and bulky at best, and rarely combine a comfortable fit with a secure attachment.
Another approach in the art is constructing specialized footwear with the device built-in and either retractable or continuously in position for use. For example, skate shoes are available with small diameter wheels integrated for use. A significant drawback to this approach is that interchangeability of equipment is not possible. Since the device is integrated or built-in to the footwear, it cannot be mounted on footwear of differing types and/or sizes. Additionally, this type of footwear can be used with only a few small types of devices (such as limited-performance roller-skates). Flexibility of the footwear's sole (and therefore, comfort) may also be compromised.
Specialized footwear is also available with connecting structure on the soles. This footwear is uncomfortable and impractical for ordinary wear due to a rigid arch, connecting structure extending below the outsole, and/or having vertical recesses as connecting structure, which easily become clogged with debris if the footwear is worn on muddy, sandy, snowy, or gravelly surfaces, keeping the mating portions of the device from seating into the recesses. Examples include conventional ski boots with their rigid arches, causing discomfort and awkwardness when walking and stair-climbing, necessitating an entire category of “aprés-ski” boots, to be worn after the ski boot is removed.
Therefore, there is a need for a novel footwear that permits various devices to be releasably mounted, but in a manner that allows the user to comfortably use the footwear when a device is not attached.
SUMMARYAccording to one aspect, the invention provides footwear for use with a plurality of footwear-mounted devices. The footwear includes an upper portion adapted to receive at least a portion of a foot. A sole is provided that includes a forefoot portion with a forefoot receiver spaced apart from a heel portion with a heel receiver. The sole can be releasably coupled with the plurality of footwear-mounted devices. The forefoot receiver may be coupled in a locking engagement with at least one of the footwear-mounted devices independent of the heel receiver; conversely, the heel receiver may be coupled in a locking engagement with at least one of the footwear-mounted devices independent of the forefoot receiver.
In one embodiment, a flexible portion may be provided between the heel portion and the forefoot portion. In some cases, the locking engagement of the footwear-mounted device with the forefoot receiver and the heel receiver could be a substantially rigid connection. Embodiments are contemplated in which the forefoot receiver and/or the heel receiver could be configured to receive the footwear-mounted device with a sliding insertion motion that is substantially coplanar with the sole. Depending on the circumstances, an outsole element could be provided that extends from the forefoot receiver and/or heel receiver to prevent contact of the notch, forefoot receiver and/or heel receiver with the ground during use without a footwear-mounted device being attached.
According to another aspect, the invention provides a combination footwear and a footwear-mounted device. The device includes a connector, a catch, and a release. The footwear includes an upper portion adapted to receive at least a portion of a foot and a sole. Typically, the sole includes a forefoot portion with a forefoot receiver spaced apart from a heel portion with a heel receiver, and a flexible portion therebetween. The connector is configured to be slidably coupled with the heel receiver and/or the forefoot receiver with an insertion motion that is substantially coplanar with the sole. The catch is movable into a locking engagement with the footwear upon substantial completion of the insertion motion. To disengage the catch, the release may be actuated to allow extraction of the footwear-mounted device from the footwear.
In some cases, the catch forms an interference fit between the device and the footwear. For example, the catch may be moveable between an engagement position adapted to lock the device with the footwear and a disengagement position adapted to unlock the device with the footwear. In such an embodiment, the forefoot receiver and/or the heel receiver could include a contact surface that is approximately adjacent to a void. The catch could ride on the contact surface in a disengagement position during the insertion motion until the catch reaches the void, in which case the catch may move to the engagement position form an interference fit between the device and the footwear. In one embodiment, the catch includes a ramped portion that terminates with a catch face. For example, the ramped portion may ride on the contact surface during the insertion motion and the catch face may engage an edge of the void to form an interference fit when the catch reaches the void.
Embodiments are contemplated in which the device includes a first catch movable into a locking engagement with the forefoot portion and a second catch movable into a locking engagement with the heel portion. For example, a single insertion motion could move both the first catch and the second catch into a locking engagement with the forefoot portion and the heel portion, respectively.
Depending on the circumstances, the forefoot receiver and/or the heel receiver could have a longitudinal extending slot dimensioned to slidingly receive the connector. For example, the forefoot receiver and/or the heel receiver may include a first longitudinal slot spaced apart from a second longitudinal slot. Embodiments are contemplated in which the connector may include a first projection that is adapted to slidingly engage the first longitudinal slot and a second projection adapted to slidingly engage the second longitudinal slot. In some cases, the first projection and the second projection are aligned and then inserted into the first slot and the second slot, respectively, pursuant to the insertion motion. For example, the sole may include a guiding structure that aids in aligning the first projection and the second projection for insertion into the first slot and the second slot, respectively.
According to a further aspect, the invention provides a footwear-mounted device. The device may include a body, a first catch, a second catch, a biasing member, and a release. The first and second catches may be pivotably movable on the body between a locked position and an unlocked position. The biasing member could urge the first catch and the second catch to the locked position. The release could be used to move the first catch and the second catch to the unlocked position. Typically, the first catch and the second catch are configured to interlock with a footwear on a forefoot portion and a heel portion, respectively, upon slidingly engaging a sole of the footwear in a motion that is substantially coplanar with the sole.
Additional features and advantages of the invention will become apparent to those skilled in the art upon consideration of the following detailed description of the illustrated embodiment exemplifying the best mode of carrying out the invention as presently perceived.
The present disclosure will be described hereafter with reference to the attached drawings which are given as non-limiting examples only, in which:
Corresponding reference characters indicate corresponding parts throughout the several views. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principals of the invention. The exemplification set out herein illustrates embodiments of the invention, and such exemplification is not to be construed as limiting the scope of the invention in any manner.
DETAILED DESCRIPTION OF THE DRAWINGSWhile the concepts of the present disclosure are susceptible to various modifications and alternative forms, specific exemplary embodiments thereof have been shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that there is no intent to limit the concepts of the present disclosure to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the disclosure.
The heel and/or forefoot portions 21 and 22 may have a receiver which is essentially rigid (here shown as longitudinal split-Tee shaped slots 30), and an outsole element 24 (this is the bottom-most surface of the footwear, often referred to as a “tread”), which projects below the receiver in a position to contact the ground or floor when the footwear (here a boot 10) is worn without the device (here shown as a skate 2) attached. The sole 20 also has at least one notch, and is shown in the particular example in
The device typically has at least one catch (in the example under discussion, two channel pivot catches 70), which is urged (e.g., pressed or pulled) by a biasing member (here shown as torsion spring 80) into engagement with the notch 40, and withdrawn from engagement by a release (here shown as a rear-pull release 90).
Many possible catch configurations are possible, as well as many spring types, as an individual skilled in the art will readily see upon consideration of the examples shown. In particular, the spring may be a torsion spring 80, a coiled compression spring, a coiled tension spring, a leaf spring, an elastic cord or band in tension or torsion, or any other biasing member which urges the catch into engagement position. Of course, various catch configurations may each favor different spring types.
In operation, the initial example shown in
The connectors and receivers each have sufficient vertical and horizontal components to prevent motion at right angles to the direction of insertion once interfitted. This, with the catch and notch preventing withdrawal and the overtravel stop preventing over-insertion, provides a secure attachment.
When detachment is desired, the release (here, rear-pull release 90) is used to overcome the force of the biasing member (here, torsion spring 80), and disengage the catch (here, pivoting catches 70) from the notch (here, angled notches 40). The device (here, skate 50) can then be withdrawn from the footwear (here, boot 10)—or vice-versa—with a withdrawal motion the reverse of that of insertion (in this case, rearward). Note that engagement of the catch with the notch is automatic upon insertion; no other separate action is needed to secure the device to the footwear.
An advantage of the horizontal insertion motion is that debris is less likely to clog a horizontal slot than a vertical cavity, such as those currently available; it is also easier to clear debris from a horizontal slot. An opening (here, debris-ejection opening 303) at the forward end of the slot can allow debris to be ejected out the opening by the rail (or other form of connector) as the rail slides into the slot. This improves reliability as well as cleanliness, making it more practical to use the footwear for regular use without the device attached. In this embodiment, the mating elements (connectors, receivers, catches, notches, and overtravel stop) are all positioned to interact in locations higher than the outsole elements 24, so that wear of the outsoles 24 will not affect the function of the interface.
As seen in
The connectors have a vertical component of the two approximately parallel longitudinal rails 60, and horizontal components which are lateral projections 601 extending outward from the upper portion of the rails 60. Together these form a “split-Tee” cross-section. One of the connectors (in this example, the front) is short enough to fit in the space between the forefoot portion 22 and heel portion 21, and the connectors are spaced far enough apart to accommodate one of the sole portions (in this example, the heel portion 21).
The device here has its catches 70 located between the rails 60; each catch 70 has at its upper end a ramp 702 which terminates in a catch face 701, beyond which is a catch lip 703. At the lower end, each catch 70 has a securing means for movably locating the catch face 701 and ramp 702 with respect to the device, which securing means here is a catch pivot 704.
The catch face 701 is here a plane whose cross-section approximates an arc about the axis of the catch pivot 704. This configuration ensures that any force (other than friction) acting on the catch face 701 will transfer linear force to the catch pivot 704, minimizing any torque which would rotate the catch 70 about the pivot 704. The catch spring, is (in this embodiment) a torsion spring 80 mounted around the catch pivot 704 and has one end pressing on the device body and the other pressing on the catch 70, urging it upward.
The release in this example has two release bars 901, rotatably mounted to the pivoting catches 70 on release pivots 902. The bars 901 are located on either side of the catches 70, and extend rearward to the release actuator, which here is a release actuator pull 903 in the form of a rod connecting the rearward ends of the two release bars 901. The bars 901 are far enough apart to admit a finger between, and the actuator 903 is of sufficient diameter to be comfortable to pull with a finger.
In operation, the footwear and device are brought together vertically (as shown by the large arrow in
As shown, the full attachment has been accomplished by two simple motions: a vertical alignment motion which needs be only precise enough to locate the forward connector between the heel 21 and forefoot 22, and then a forward insertion motion which is automatically located vertically by contact of the connectors with the horizontal guiding surfaces 301, and laterally by the vertical guiding surfaces 302 and/or beveled leading edges. The insertion motion itself automatically engages the catches 70 with no other effort on the part of the user. This allows one-handed attachment of small devices such as a skates, cleats or swim-fins, and hands-free attachment of large devices such as skis, snowboards, wakeboards or snowshoes.
Withdrawal of the device from the footwear is prevented by the contact between the catch face 702 and the notch face 402. Rearward force on the device meets resistance from the notch face 402. Because the catch face 701 is perpendicular to the line from the axis of the catch pivot 704, this resistance presses forward and down on the catch face 701, directly toward the catch pivot 704. This exerts practically no torque on the catch 70, while transmitting resistive force through the catch pivot 704 to the device itself, preventing withdrawal.
Typically materials resistant to weather, common chemicals, abrasion, and impact would be used. Economy and reliability can be enhanced by making dimensions and components of the connector, receiver, catch and notch located at the heel 22 interchangeable with those at the forefoot 22.
Embodiments are contemplated in which the interface allows multiple devices to be interchangeably used with a pair of footwear. This improves convenience, versatility and economy. Devices that could be interchanged may include, but are not limited to: inline roller skates 50, ice skates, conventional roller skates, binding blocks 51 for downhill skis, cross-country skis, snowboards, spikes, cleats, water skis, swim fins, wakeboards, stretching equipment 53, exercise-platform shoe bases, bicycle toe-clips, bungee harnesses, safety mounts for platforms, mine-clearing safety shields, stilts 52, spring-shoe soles, or other equipment to be securely and releasably attached to the foot or shoe. This interface also makes it easy to interchange different individual devices of the same type, economically replacing a worn device while retaining the same footwear, or selecting a different unit of the same general type of device (as with rentals, or to select a minor variation, etc.). Examples of footwear that could be interchanged include but are not limited to: boots 10, athletic shoes, casual shoes, even dress shoes, sandals, beach shoes, or others. Also, multiple users can attach the same device (alternately) to their own footwear, even if they wear different shoe sizes, since a range of shoe sizes can use mating elements of the same dimensions.
Optional Alignment Guiding StructureIn this embodiment, the release 91 is an outward-facing lever 910, attached to the shaft of the catch pivot 714. The shaft of the pivot 714 extends from the heel catch to the forefoot catch, with the release 91 positioned between the two catches, the catches and release may be pivotably attached to the rail 61 by two anchors 715, and each may be located between the release 91 and one of the catches 71. The catches 71 and the release 91 may be all rigidly affixed to the catch pivot shaft 714, so they cannot rotate with respect to each other, but the shaft is free to rotate within longitudinal holes in the anchors 715.
In this embodiment, the actuator of the release 91 is a detent 911 in the top horizontal surface of the release body (which here is a lever 910 as shown), large enough to accommodate a finger or the tip of an implement such as a ski pole, making it easier to depress the release 91 with downward force, without slipping off it. A release guard 912 extends outwardly around the release body 910, affixed at its ends. This protects the release 91 from being triggered by accidental angular force.
In this embodiment, the faces 412 and 711 are at right angles to the insertion motion rather than at an oblique angle, as at first. Again, this provides a positive lockup, without interfering with engagement and disengagement of the catches 71. To release the catches 71, the actuator detent 911 is depressed with a finger, ski pole or other implement, disengaging the catches and allowing withdrawal. Note also that the horizontal release pad 91, may be used with other types of catches as well, for instance, it could extend from the side of the previously shown release bars 901, again having the detent 911 and the actuator guard 912. An advantage of this pad-style embodiment of the release actuator is that in using skis or other large devices, the user can release the device while standing in an upright position by using a ski pole or other long implement.
Alternate Catch Embodiment Single Front PivotAlthough the above embodiments show the insertion motion being in a forward direction, the elements could alternately be arranged so that the insertion motion could be rearward, sideways, or diagonal, though still in an essentially horizontal plane.
A guiding cone 352 may project from the arch 23, positioned along the common vertical axis 351. The device has an upper surface with a conical guiding recess 651, between the heel and forefoot connectors, also centered on the vertical axis 351, and shaped to admit the guiding cone 352 snugly. Debris-clearance openings include a center hole 652 in the guiding recess 651, and a clearance space 653 left between the device body and the arch 23 when the cone 352 is fully seated in the recess 651.
The catch and notch arrangement can be similar to that of the outer rail embodiment above, with a single side catch 71 of the same configuration, but rotating on a side catch pivot 714 located laterally and engaging a rotary-insertion notch 42 on the front face of the heel 22 (alternately, or course, it could be located on the rear face of the forefoot 22). The release can likewise be a horizontal lever 910 fixed to the catch pivot 714, the pivot shaft and release extending to the outside of the footwear. Again, a detent (actuator 243) and guard 244 serve the same functions as in the previous embodiments.
In operation, the footwear is lowered onto the device at a rotated angle, the guiding cone 352 centering itself into the conical guiding recess 651. Fully seating the cone in the recess aligns the rails 65 with the slots 35; then a rotary insertion motion in the horizontal plane completes the mating of the footwear and the device. The catch 22 engages automatically as before, and the release 24 functions as before.
Although the above embodiments have generally described the connectors as being a rail or pair of rails which is vertical in cross-section, with lateral (horizontal) projections at right angles to the vertical rail, this need not be the case, so long as the connector has vertical and horizontal components to its cross-section sufficient to prevent significant motion perpendicular to the insertion motion when mated.
Some devices, such as downhill skis and inline skates, require the above-mentioned full sole rigidity, provided by a structure in the device, rigidly connecting the heel connector to the forefoot connector. Other foot-mounted devices, such as cross-country skis or swim-fins, require mounting to only the forefoot, with the heel unattached and the arch of the foot able to flex. Others may require mounting to only the heel, with the forefoot unattached and the arch free to flex. Still others may need the heel and forefoot rigidly fixed in relation to each other, yet still having a jointed or flexible connection to the main body of the device. These requirements can be met using the interface described below and shown in
Alternately, the device may have a non-rigid connection between the forefoot connector and heel connectors.
Some devices such as skates and skis work well with boots which support the ankle at a given position or range of positions. Embodiments are contemplated in which footwear could have selectable rigidity in the ankle joint.
Although the present disclosure has been described with reference to particular means, materials, and embodiments, from the foregoing description, one skilled in the art can easily ascertain the essential characteristics of the invention and various changes and modifications may be made to adapt the various uses and characteristics without departing from the spirit and scope of the invention.
Claims
1. A footwear for use with a plurality of footwear-mounted devices, the footwear comprising:
- an upper portion adapted to receive at least a portion of a foot;
- a sole including a forefoot portion having a forefoot receiver spaced apart from a heel portion having a heel receiver;
- wherein the sole is configured to be releasably coupled with a plurality of footwear-mounted devices;
- wherein the forefoot receiver is adapted to be coupled in a locking engagement with at least one of the footwear-mounted devices independent of the heel receiver; and
- wherein the heel receiver is adapted to be coupled in a locking engagement with at least one of the footwear-mounted devices independent of the forefoot receiver.
2. The footwear of claim 1, further comprising a flexible portion between the heel portion and the forefoot portion.
3. The footwear of claim 2, wherein the locking engagement of the footwear-mounted device with the forefoot receiver and the heel receiver is a substantially rigid connection.
4. The footwear of claim 1, wherein at least one of the forefoot receiver and the heel receiver is configured to receive the footwear-mount device with a sliding insertion motion that is substantially coplanar with the sole.
5. The footwear of claim 4, wherein at least one of the forefoot receiver and the heel receiver includes a contact surface on which a portion of the footwear-mounted device rides during the insertion motion until reaching a void defined in the sole, wherein at least a portion of the footwear-mounted device is received into the void at the completion of the insertion motion to form a locking engagement between the footwear and the footwear-mount device.
6. The footwear of claim 5, wherein an angled notch face is positioned between the contact surface and the void.
7. The footwear of claim 4, further comprising an outsole element extending from at least one of the forefoot receiver and heel receiver to prevent contact of the notch and at least one of the forefoot receiver and the heel receiver with the ground during use without a footwear-mounted device being attached.
8. The footwear of claim 4, wherein the forefoot receiver includes a slot configured to receive a connector of the footwear-mounted device into the forefoot receiver during the insertion motion.
9. The footwear of claim 8, wherein the heel receiver includes a slot configured to receive a connector of the footwear-mounted device into the heel receiver during the insertion motion.
10. A combination footwear and a footwear-mounted device, the combination comprising:
- a footwear-mounted device including a connector, a catch, and a release;
- a footwear comprising: an upper portion adapted to receive at least a portion of a foot; a sole including a forefoot portion having a forefoot receiver spaced apart from a heel portion having a heel receiver and a flexible portion between the forefoot portion and the heel portion;
- wherein the connector is configured to be slidably coupled with at least one of the heel receiver and the forefoot receiver with an insertion motion that is substantially coplanar with the sole;
- wherein the catch is movable into a locking engagement with the footwear upon substantial completion of the insertion motion; and
- wherein the release is configured to disengage the catch to allow extraction of the footwear-mounted device from the footwear.
11. The combination of claim 10, wherein the catch is urged into the locking engagement by a biasing member and the release overcomes the biasing member to disengage the catch.
12. The combination of claim 10, wherein the catch forms an interference fit between the device and the footwear.
13. The combination of claim 12, wherein the catch is moveable between an engagement position adapted to lock the device with the footwear and a disengagement position adapted to unlock the device with the footwear, wherein at least one of the forefoot receiver and the heel receiver include a contact surface that is approximately adjacent to a void, wherein the catch rides on the contact surface in the disengagement position ensured by contact with the catch and the contact surface during the insertion motion until the catch reaches the void, wherein the catch moves to the engagement position upon reaching the void to form an interference fit between the device and the footwear.
14. The combination of claim 13, wherein the catch includes a ramped portion that terminates with a catch face, wherein the ramped portion rides on the contact surface during the insertion motion and wherein the catch face engages an edge of the void to form an interference fit when the catch reaches the void.
15. The combination of claim 10, wherein the catch is pivotably connected with the footwear-mounted device and the release pivots the catch to disengage the locking engagement.
16. The combination of claim 10, wherein the device includes a first catch movable into a locking engagement with the forefoot portion and a second catch movable into a locking engagement with the heel portion.
17. The combination of claim 16, wherein a single insertion motion moves both the first catch and the second catch into a locking engagement with the forefoot portion and the heel portion, respectively.
18. The combination of claim 10, wherein at least one of the forefoot receiver and the heel receiver include a debris escaping opening.
19. The combination of claim 10, wherein at least one of the forefoot receiver and the heel receiver includes a longitudinal extending slot dimensioned to slidingly receive the connector.
20. The combination of claim 10, wherein at least one of the forefoot receiver and the heel receiver include a first longitudinal slot spaced apart from a second longitudinal slot and wherein the connector includes a first outwardly extending projection that is adapted to slidingly engage the first longitudinal slot and a second outwardly extending projection adapted to slidingly engage the second longitudinal slot.
21. The combination of claim 20, wherein at least one of the forefoot receiver and the heel receiver include a notch between the first longitudinal slot and the second longitudinal slot, wherein the notch is dimensioned to receive the catch in a locking engagement, and wherein the catch is disposed between the first projection and the second projection.
22. The combination of claim 21, further comprising an outsole element extending from at least a portion of the sole and wherein at least one of the notch, the forefoot receive and the heel receiver is recessed within the outsole element to prevent contact with the ground during use without a footwear-mounted device being attached.
23. The combination of claim 20, wherein the first projection and the second projection are aligned and then inserted into the first slot and the second slot, respectively, pursuant to the insertion motion.
24. The combination of claim 23, further comprising guiding structure on at least one of the forefoot receiver and the heel receiver for aligning the first projection and the second projection for insertion into the first slot and the second slot, respectively.
25. The combination of claim 10, wherein at least one of the forefoot receiver and the heel receiver include a first longitudinal slot spaced apart from a second longitudinal slot and wherein the connector includes a first inwardly extending projection that is adapted to slidingly engage the first longitudinal slot and a second inwardly extending projection adapted to slidingly engage the second longitudinal slot.
26. A footwear-mounted device comprising:
- a body;
- a first catch pivotably movable on the body between a locked position and an unlocked position;
- a second catch pivotably movable on the body between a locked position and an unlocked position;
- a biasing member configured to urge the first catch and the second catch to the locked position;
- a release configured to move the first catch and the second catch to the unlocked position; and
- wherein the first catch and the second catch are configured to interlock with a footwear on a forefoot portion and a heel portion, respectively, upon slidingly engaging a sole of the footwear in a motion that is substantially coplanar with the sole.
Type: Application
Filed: Mar 31, 2010
Publication Date: Sep 30, 2010
Inventor: GORDON L. BELLES (WARSAW, IN)
Application Number: 12/750,976
International Classification: A43B 5/00 (20060101);