# Patent

## Title
Detachable sole for an ankle and foot covering

## Abstract

A combination that preferably includes at least: a ski boot; and a detachable sole detachably attached to the ski boot is disclosed. The detachable sole preferably includes at least: a chassis portion overmolded with a tread portion; and a latch assembly for securing the chassis adjacent the ski boot. The ski boot preferably provides a contoured heel portion and the latch assembly preferably incorporates a latch configured to conform to the contoured heel portion, a latch support interacting with the latch; an attachment member communicating with said chassis; and an adjustment member interposed between said latch support and said attachment member to accommodate a snug conformance of the latch adjacent the heel portion.

## Background
RELATED APPLICATIONS
This application is a continuation-in-part of U.S. patent application Ser. No. 11/189,204 filed Jul. 25, 2005, entitled DETACHABLE SOLE FOR ANKLE AND FOOT COVERING, which claims priority to U.S. Provisional Application No. 60/659,991 filed Mar. 7, 2005, entitled SKI BOOT ATTACHMENTS.


FIELD OF THE INVENTION
This invention relates to detachable soles for ankle and foot coverings, which afford easier walking for individuals wearing ankle and foot coverings, and more particularly, but not by way of limitation, to attachments that easily attach and detach to the bottoms of ski boots, and to the bottom of an orthopedic device affixed to an individual's ankle and foot.
BACKGROUND
Walking in orthopedic devices or ski boots is an awkward endeavor at best. Attachments that fit onto the bottom of ski boots and orthopedic devices have been proposed in the prior art. However, each proposed solution has drawbacks, which fail to provide: an overall solution to ease the process of walking in ski boots or orthopedic devices when encountering changes in the walking terrain; and a convenient, compact configuration for storing the attachment when not in use.
As such, challenges remain and a need persists for improvements in methods and apparatuses for use in enhancing the walking experience of individuals wearing ski boots or orthopedic devices.
BRIEF SUMMARY OF THE INVENTION
In accordance with preferred embodiments, a combination including: an ankle and foot covering; and a detachable sole configured for attachment to and detachment from the ankle and foot covering; and methods of making and using the combination are provided.
In a preferred embodiment, the detachable sole includes at least a chassis that provides a web portion projection from a top portion, and a plurality of side portions communicating with the top portion and forming an edge perimeter enclosing the web portion.
Preferably, the ankle and foot covering is a ski boot, and each side of the plurality of sides provides a retention feature. Preferably, each retention feature is encapsulated by a sole that is overmolded onto the chassis. The detachable sole further preferably includes a latch assembly attached to the chassis and configured for securement of the chassis adjacent the ski boot. In a preferred embodiment, the ski boot provides a contoured heel portion, and the latch assembly includes at least: a latch configured to conform to the contoured heel portion; a latch support interacting with the latch, an attachment member communicating with the web portion of the chassis, and an adjustment member interposed, between the latch support and the attachment member, and configured to accommodate a snug conformance of the latch adjacent the heel portion.
In a preferred embodiment of the present invention, the latch support and attachment member each provide a threaded portion, which interact with the adjustment member to form the latch assembly. In a preferred embodiment, the adjustment member is a right-hand coil spring, and the threaded portion provided by each the attachment member and the latch support presents left-hand threads. The presentation of left-hand threads on opposing members promotes advancement of the preferred right-hand coil spring onto each attachment member and latch support.
These and various other features and advantages that characterize the claimed invention will be apparent upon reading the following detailed description and upon review of the associated drawings.



BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows a top perspective view of an embodiment of an inventive detachable sole.
FIG. 2 shows a top perspective view of an alternate embodiment of the inventive detachable sole.
FIG. 3 is a bottom perspective view of tread portions of the inventive detachable sole of FIG. 2.
FIG. 4 is an exploded perspective view of the inventive detachable sole of FIG. 1.
FIG. 5 is an exploded perspective view of the inventive detachable sole of FIG. 2.
FIG. 6 shows a side elevational view of an alternative embodiment of the inventive detachable sole secured to an ankle and foot covering.
FIG. 7 illustrates a side elevational view of the inventive detachable sole of FIG. 2 secured to an alternate ankle and foot covering.
FIG. 8 is a side elevational view of the inventive detachable sole of FIG. 2 shown in a collapsed configuration ready for storage.
FIG. 9 is a rear elevational view of the inventive detachable sole of FIG. 2 shown in a collapsed configuration ready for storage.
FIG. 10 is a first side elevational view of an inventive detachable sole storage rack configured for interaction with the inventive detachable sole of FIG. 2.
FIG. 11 is a second side elevational view of the inventive detachable sole storage rack of FIG. 10.
FIG. 12 is a partial cutaway rear elevational view of the inventive detachable sole storage rack of FIG. 10.
FIG. 13 is a side elevational view of the inventive detachable sole storage rack of FIG. 10 attached to the alternate ankle and foot covering of FIG. 7.
FIG. 14 is a side elevational view of the inventive combination of the present invention.
FIG. 15 is a flow diagram of the method of making the inventive detachable sole of FIG. 2.
FIG. 16 is flow diagram of a method of using the inventive combination of FIG. 14.
FIG. 17 is an exploded perspective view of another alternate embodiment of an inventive detachable sole.
FIG. 18 shows a top perspective view of the inventive detachable sole of FIG. 17.
FIG. 19 shows a bottom perspective view of the inventive detachable sole of FIG. 17.
FIG. 20 illustrates a left perspective view of an alternate latch of the inventive detachable sole of FIG. 17.
FIG. 21 is rear plan view of the latch of FIG. 20.
FIG. 22 is bottom elevational view of the latch of FIG. 20.
FIG. 23 is a side elevational view of an alternate inventive combination of the present invention.
FIG. 24 is a flow diagram of the method of making the inventive detachable sole of FIG. 18.
FIG. 25 is a flow diagram of a method of using the inventive combination of FIG. 23.



DETAILED DESCRIPTION
Reference will now be made in detail to one or more examples of the invention depicted in the figures. Each example is provided by way of explanation of the invention, and not meant as a limitation of the invention. For example, features illustrated or described as part of one embodiment may be used with another embodiment to yield still a different embodiment. Other modifications and variations to the described embodiments are also contemplated within the scope and spirit of the invention.
Referring to the drawings, FIG. 1 shows an inventive detachable sole 100 that includes a tread portion 102, which includes a toe confinement portion 104, attached to a chassis 106. In a preferred embodiment, the tread portion 102 is attached to the chassis 106 through the use of an overmold process. However, alternate techniques may be used for the attachment of the tread portion 102 to the chassis 106, such as through the employment of adhesive material, or by sonically welding the components together.
In a preferred embodiment, the chassis 106 is formed from glass filled polypropylene compound, in which the compound contains between 10-30% glass by volume, and preferably 20% glass by volume, and the tread portion 102 is preferably formed from a quasi pliable polymer such as the thermoplastic elastimer resin (TPE), or a polyurethane.
FIG. 1 further shows the inventive detachable sole 100 further includes an attachment hoop 108, which is preferably formed from nickel plated steel, but may be formed from alternate materials such as a carbon filed compound, or stainless steel. In a preferred embodiment, the attachment hoop 108 supports a latch 110, that is preferably an over-center latch. The latch 110 accommodates attachment of the detachable sole 100 to a plurality of ankle and foot coverings.
Turning to FIG. 2, shown therein is an alternate preferred embodiment of the inventive detachable sole 120. In contrast to the detachable sole 100 (of FIG. 1), the detachable sole 120 includes a first sole portion 122 and a second sole portion 124 secured together by a hinge portion 126. Additionally, the attachment hoop 108 (of FIG. 1) of the detachable sole 100 differs from an attachment hoop 128 of the inventive detachable sole 120. The attachment hoop 128 provides two portions, a latch attachment portion 130 and a heel chassis attachment portion 132 hinged to the latch attachment portion 130. It is noted however that the inventive detachable sole 120 and the inventive detachable sole 100 share the latch 110 in common.
FIG. 3 shows the first sole portion 122 includes a toe tread portion 133, and the second sole portion 124 includes a heel tread portion 134. As with the tread portion 102 (of FIG. 1), the toe and heel tread portions 133,134 are preferably attached through the use of an overmold process. FIG. 3 further shows that the first sole portion 122 includes a side cap 136, and the second sole portion 124 includes a side cap 138. It will be understood that a tread pattern 140 of the toe tread portion 133, and a tread pattern 142 of the heel tread portion 134 represent preferred tread patterns, and do not impose limitations on the present invention. Those skilled in the art understand that alternate tread patterns may be utilized, and slip resistance mechanisms such as studs (similar to studs used on studded snow tires) may be incorporated within tread patterns 140 and 142, which fall within the scope of the present invention.
The exploded perspective views of the inventive detachable soles 100 and 120 of FIG. 4 and FIG. 5 respectively may be best viewed in concert to provide an enhanced understanding of the commonalities and differences between the inventive detachable soles 100 and 120.
FIG. 4 shows the chassis 106 includes a baffled support matrix 144 interposed between a top chassis portion 146 and a bottom chassis portion 148. FIG. 5 shows that the first sole portion 122 includes a toe chassis portion 150 constructed with a baffled support matrix 152 interposed between a top chassis portion 154 and a bottom chassis portion 156. The second sole portion 124 includes a heel chassis portion 158 constructed with a baffled support matrix 160 interposed between a top chassis portion 162 and a bottom chassis portion 164.
FIG. 4 shows the inventive detachable sole 100 includes a right side cap 166 and a left side cap 168. When the side caps 166 and 168 are attached to the baffled support matrix 144, debris is prevented from entering a plurality of cavities 170. It is noted that the plurality of cavities 170 collectively form the baffling members of the baffled support matrix 144. In addition to the side caps 136 and 138 (of FIG. 3), FIG. 5 further shows the inventive detachable sole 120 includes a 20 pair of the left side caps 172 and 174, which are provided to preclude entry of debris into the baffled support matrix 152.
The hinge portion 126, as shown by FIG. 5, includes a plurality of hinge knuckles 176, and a pair of hinge pins 178. Each hinge knuckle 176 provides a pair of hinge pin apertures 180, and each hinge pin 178 is configured for sliding engagement within the hinge pin apertures 180. To accommodate each hinge knuckle 176, the toe chassis portion 150, and the heel chassis portion 158 each provide a plurality of hinge pin confinement portions 182, wherein each hinge pin confinement portions provides a passageway 184 sized to snugly accommodate each hinge pin 178 in mating contact. Interposed between each hinge pin confinement portions 182 are hinge knuckle reception cavities 186. Each hinge knuckle reception cavities 186 of the toe chassis portion 150 is positioned to align directly across from a corresponding hinge knuckle reception cavity 186 of the heel chassis portion 158.
When each the toe and heel chassis portions, 150,158 are outlined for mating with the hinge portion 126, each of the plurality of hinge knuckles are deposited within the hinge knuckle reception cavities 186, and each hinge pin is encouraged through the respective passageways 184 of the toe and heel chassis portions 150, 158 to combine the first sole portion 122 with the second sole portion 124 to form the inventive detachable sole 120.
As can be seen in FIG. 4, the chassis 106 includes a plurality of overmold interface cavities 188, which have been found useful in enhancing an ability of the tread portion 102 to adhere to the chassis 106. Preferably, during an overmold process, a selected polymer used in forming the tread portion 102 is forced through each of the overmold interface cavities 188, and reflowed together to form a continuous surface 190 adjacent to top chassis portion 146. The continuous surface 190 provides a bridge-way between the chassis 106 and the toe confinement portion 104. A quasi pliable polymer such as the thermoplastic elastimer resin (TPE), or a polyurethane is preferable for use in forming the tread portion 102, the continuous surface 190, and the toe confinement portion 104 because the selection of a quasi pliable polymer accommodates various toe configurations of a mating ankle and foot covering, such as a ski boot 220 (of FIG. 7). In a preferred embodiment, the quasi pliable polymer continuous surface 190, and the toe confinement portion 104 have been found useful in holding the inventive detachable sole 120 under tension when attached to the ski boot 220. However, as those skilled in the art will recognize, alternate methods of providing a tensile load to the detachable sole 120 to aid in maintaining a snug fit between the ski boot 220 and the inventive detachable sole 120 may be provided, without deviation from the scope and spirit of the present invention, for example, through use of a spring configuration.
The latch 110 of FIG. 4, which in a preferred embodiment is an over-center latch 110 that includes three primary components: a latch block 192, a latch body 194, and a latch door 196. The latch block 192 provides a latch body engagement feature 198, a latch door engagement feature 200, and an attachment hoop attachment feature 202. The latch body 194 provides a plurality of tension adjustment members 204 (one shown in cutaway view), an over-center pivot feature 206, and a latch receptacle 208.
In a preferred embodiment, the latch body engagement feature 198 of the latch block 192 is slid into engagement with a selected one of the plurality of tension adjustment members 204. Because the plurality of tension adjustment members 204 extend along a length 210 of the latch body 194, the selection of a specific tension adjustment member 204 determines a holding force imparted by the attachment hoop 108 on the chassis 106, which determines how tightly the inventive detachable sole 100 is secured adjacent a mating ankle and foot covering, such as orthopedic device 218 (of FIG. 6).
The latch door 196 is configured for engagement with the latch block 192 and the latch body 194. The latch body provides a plurality of latch block support channels 212, a latch door latch 214, and a pivot detent 216. Once the selection has been made for the particular tension adjustment member 204, and the latch body engagement feature 198 has been slid onto the selected tension adjustment member 204, a position of the latch block 192 relative to the latch receptacle 208 can be determined. When the relative position of the latch block 192 to the latch receptacle 208 has been determined, a specific latch block support channel 212 is selected by rotating the latch door latch 214 about the pivot detent 216 to engage the latch door engagement feature 200 with the latch receptacle 208. Once positioned, the latch door 196 mitigates a buildup of ice and snow around the interface of the latch body engagement feature 198 and the selected tension adjustment member 204.
FIGS. 6 and 7 each show an example of a use for the inventive detachable sole 120. The applied use of the inventive detachable sole 120 depicted by FIG. 6 resides within the medical arts. The inventive detachable sole 120, provides an enhanced walking ability for an individual wearing an orthopedic device such as a cast 218. The enhanced walking ability provided for an individual wearing the cast 218 results from the concave shape 222 of the inventive detachable sole 120, and the preferred tread patterns 140 and 142, respectively of the first sole portion 122 and the second sole portion 124.
The applied use of the inventive detachable sole 120 depicted by FIG. 7 resides within the sports equipment arts. The inventive detachable sole 120, provides an enhanced walking ability for an individual wearing, for example an Alpine type ski boot, such as 220. The enhanced walking ability provided for an individual wearing the ski boot 220 results from the concave shape 222 of the inventive detachable sole 120, the preferred tread patterns 140 and 142, respectively of the first sole portion 122 and the second sole portion 124, the toe confinement portion 104, and the adjustability features of the over-center latch 110.
FIG. 8 provides a best view of a chassis stabilization member 224, which extends from the proximal end 226 of the heel chassis portion 158, while FIG. 9 provides a best view of a chassis stabilization aperture 228. The chassis stabilization aperture 228 is configured to accommodate penetration of the chassis stabilization member 224 when the heel chassis portion 158 is folded into alignment with the toe chassis portion 150. FIG. 9 further shows the inclusion of a pair of retention stud apertures 230. The retention stud apertures 230 accommodate penetration of a pair of respective chassis retention studs 232 of FIGS. 10 and 11.
It will be noted that FIG. 8 shows the inventive detachable sole 120 to be in a partially folded position. It will be understood that the depiction of the inventive detachable sole 120 in a partially folded position was provided to enhance an understanding of the present invention and does not impose any limitations on the present invention. In a preferred embodiment, in a fully folded position, the first sole portion 122 aligns with the second sole portion 124 in a substantially flat continuous manner.
Turning to FIGS. 10 and 11, a left side elevational view of a storage rack 234 is provided by FIG. 10, and a right side elevational view of the storage rack 234 is provided by FIG. 11. The storage rack 234 includes a main body portion 236 with a concave surface 238, configured for mating conformance with the toe tread portion 133 (of FIG. 8). A hook adjustment portion 240 projects from a proximal end 242 of the main body portion 236. The hook adjustment portion 240 supports and accommodates a hook attachment member 244. The hook attachment member 244 is useful for attachment of the inventive detachable sole 120 to an ankle and foot covering such as the ski boot 220 of FIG. 7.
In a preferred embodiment, the hook adjustment portion 240 provides for an adjustment, in a vertical direction (as shown by FIG. 1), of the hook attachment member 244 to accommodate varying sizes of ski boots, or orthopedic devices. The storage rack 234 further includes a chassis support shelf 246 extending from a proximal end 247 of the main body portion 236. The chassis support shelf 246 provides a support member for the chassis retention studs 232. The chassis retention studs 232 interact with the retention stud apertures 230 (of FIG. 9) to position the toe tread portion 133 adjacent the main body portion 236. FIG. 11 further shows a main body support 248 extending from a mid-portion 250 of the main body portion 236.
FIG. 11 further shows a strap support member 252 projecting from the proximal end 242 of the main body portion 236. A garment confinement slot 254 is formed between the hook adjustment portion 240 and said strap support member 252. With the inventive detachable sole 120 attached to a ski boot, such as ski boot 220 (of FIG. 7), the garment confinement slot 254 accommodates placement of a garment portion, such as a pant leg of the pair of ski pants (not shown). To secure the inventive detachable sole 120 to the ski boot 220 (as shown in FIG. 7), a strap pin 256 is attached to a distal end 258 of the strap support member 252, and a strap 260 attached to the strap pin 256. The strap 260 interacts with the over-center latch 110 to confine the toe tread portion 133 adjacent the main body portion 236.
FIG. 12 is provided to enhance an understanding of a preferred configuration of the hook attachment member 244 relative to the hook adjustment portion 240. In a preferred embodiment the hook attachment member 244 is formed from stainless spring steel, however those skilled in the art will understand that alternate materials and configurations may provide substitute design choices for the hook attachment member 244, and still remain within the scope and spirit of the present intention.
FIG. 13 provides an elevational view of a preferred embodiment configuration of the storage rack 234 attached to ski boot 220, while FIG. 14 serves to shows the configuration of FIG. 13 with the addition of the inventive detachable sole 120 of the present invention. By viewing FIG. 14 it will be noted that the storage rack 234, when attached to the ski boot 220, provides for convenient storage of the inventive detachable sole 120, when the inventive detachable sole 120 is detached from the ski boot 220, for example during periods of time in which an individual is engaged in skiing down a slope.
Flowchart 300 of FIG. 15 shows method steps of a process of making an inventive detachable sole (such as 120). The process commences at start step 302 and continues at process step 304. At process step 304, a toe chassis portion (such as 150) is formed, and at process step 306 a toe tread portion (such as 133) is overmolded onto the toe chassis. At process step 308, a heel chassis (such as 158) is formed and at process step 310 a heel tread portion (such as 134) is overmolded onto the heel chassis.
At process step 312, a first sole portion (such as 122) is aligned to a second sole portion (such as 124). With the first and second sole portions aligned, at process step 314, a process of installing a hinge portion (such as 126) is commenced by disposing each of a plurality of hinge knuckles (such as 176) within corresponding knuckle reception cavities (such as 186). At process step 316, a first of a pair of hinge pins (such as 178) is slid into its final position to secure the hinge knuckle to the first sole portion, and at process step 318 the second of the pair of hinge pins is slid into position to secure the hinge knuckle to the second sole portion.
At process step 320, side caps (such as 136, 138, 172, and 174) are attached to each of the first and second sole portions. The attachment of the side caps mitigates encroachment of debris from migrating into each of the plurality of cavities (such as 170), which collectively form baffling members of a baffled support matrix (such as 144). At process step 322, an attachment hoop (such as 128) is attached to the second sole portion, and at process step 324 a latch block (such as 192) is snapped onto the attachment hoop.
At process step 326, a latch body engagement feature (such as 198), is slid onto a pre-selected tension adjustment member (such as 204), provided by a latch body (such as 194). At process step 328, a pre-selected latch body support channel (such as 212) of a latch door (such as 196) engages a latch door engagement feature (such as 200) of the latch block. At process step 330, a latch door latch (such as 214) is snapped into an interference fit with a latch receptacle (such as 208) of the latch body, and the process concludes at end process step 332.
Flowchart 400 of FIG. 16 shows method steps of a process of using an inventive detachable sole (such as 120). The process commences at start step 402 and continues at process step 404. At process step 404, a detachable sole storage rack (such as 234), is attached to a ski boot (such as 220). At process step 406, a toe of a ski boot is placed into a toe confinement portion (such as 104) of a first sole portion (such as 122). At process 408, a heel of the ski boot is placed in mating contact with a second sole portion (such as 124). At process step 410, an attachment hoop (such as 128) is pulled into a confinement position adjacent the ski boot, and at process step 412 an over-center latch (such as 110) is engaged to secure the detachable sole to the ski boot.
At process step 414, the over-center latch is released to detach the detachable sole from the ski boot. At process step 416, a top chassis portion (such as 162) of the second sole portion is folded into mating contact with a top chassis portion (such as 154) of the first sole portion. At process step 418, the attachment hoop is folded to position the over-center latch into mating contact with a heel tread portion (such as 134) of the second sole portion. At process step 420, a pair of retention stud apertures (such as 230), are slid into confining engagement with a pair of chassis retention studs (such as 232). At process step 422, a toe tread portion (such as 133) of the first sole portion is aligned adjacent a main body portion (such as 236) of the detachable sole storage rack.
A latch body (such as 194) of the over-center latch is lashed with a strap (such as 260) to the detachable storage rack at process step 424. At process step 426, the strap is tightened to confine the toe tread portion of the first sole portion adjacent the main body portion of the detachable storage rack and the process concludes at end process step 428.
FIG. 17 shows another alternate embodiment of the inventive detachable sole 500 that includes a latch assembly 502, a chassis 504, and a sole portion 506. The latch assembly 502 includes a latch 508, a latch support 510, an attachment member 512, an adjustment member 514, and attachment hardware 515 for use in securing the latch assembly to the chassis 504. The latch support 510 preferably includes a latch mount portion 516, an alignment portion 518 projecting from the latch mount portion 516, and a first threaded portion 520 communicating with the alignment portion 518. The first threaded portion 520 is preferably configured for interaction with the adjustment member 514.
Preferably, the latch assembly 502 provides the latch 508, which includes a latch body 522, a latch door, and fastener 526 used to secure the latch door 524 to the latch body 522. To secure the latch door 524 to the latch body 522, the latch body is positioned adjacent the latch mount portion 516. With the latch body 522 pressingly engaging the latch mount portion 516, the latch door 524 is fitted into abutting contact with the latch body 522, and the fastener 526 is passed through the latch door 524 and secured into the latch body 522, thereby lockingly confining the latch support 510 between the latch door 524 and the latch body 522.
The sole portion 506 preferably includes a tread portion 528, a toe confinement portion 530, a heel portion 532, and a chassis support portion 534 interposed between the toe confinement portion 530 and the heel portion 532, and supported by the tread portion 528. The chassis support portion 532 provides a plurality of force absorption members 536 that enhance the feel of the inventive detachable sole 500 during its use.
In a preferred embodiment, the chassis 504 includes a top portion 538 that supports a web portion 540 (shown in partial cut-away), a plurality of side portions 542 that communicate with the top portion 538 to form an edge perimeter enclosing the web portion 540. It is noted that the web portion 540 is configured to accommodate the force absorption members 536 of the sole portion 506. Preferably the chassis 504 further provides an attachment feature 544 supported by a selected side portion of the plurality of side portions 542. Also, each side portion 542 preferably further supports a retention feature 546, which becomes encapsulated by the sole portion 506 during a process of overmolding the sole portion 506 onto the chassis 504.
FIG. 18 shows the chassis 504 encapsulated by the sole 506, and the attachment member 512 secured to the chassis 504 by the attachment hardware 515. The latch 508 and the chassis 504 are formed from a glass filled polypropylene compound, in which the compound contains between 10-30% glass by volume, and preferably 20% glass by volume, and the tread portion 528, is preferably formed from a quasi pliable polymer such as the thermoplastic elastimer resin (TPE), or a polyurethane.
The latch support 510 provides the latch mount portion 516, upon which the latch 508 resides. The alignment portion 518 projects from the latch mount portion 516 and provides a first threaded portion 520, which preferably presents a left-handed thread.
The attachment member 512 provides an attachment aperture 548 (not separately shown) that accommodates passage of the attachment hardware 515, which secures the attachment member 512 to the chassis 504. The attachment member 512 further preferably provides a second threaded portion 550, which preferably presents a left-handed thread.
In a preferred embodiment, the left-hand thread presentation of the first threaded portion 520, is secured to the left-hand thread presentation of the second threaded portion 550 by an adjustment member 514. Preferably, the adjustment member 514 is formed from a stainless steel coiled spring; however, those skilled in the art will understand that alternate configurations and materials may be substituted for the preferred stainless steel coiled spring, without deviating from the scope of the present invention.
In a preferred embodiment, the preferred stainless steel coiled spring is a right-hand wound coil spring, and both the first and second threaded portions, 520 and 550, present left-hand female threads. The continuous coil body of the right-hand wound coil spring (having an inner diameter corresponding to the thread depth of the left-hand female threads of the first and second threaded portions, 520 and 550) forms a corresponding mating and continuous left-hand male thread. Accordingly, by rotating the right-hand coil spring counter-clockwise, the continuous coil body of the right-hand wound coil spring settles in, and adjusts itself to the pitch of the left-hand female threads of the first and second threaded portions, 520 and 550, and travels along the length of the corresponding first and second threaded portions, 520 and 550.
FIG. 19 provides a perspective of a convenient pattern of the tread 528. The particular configuration and arrangement selected provides a distinguishable look or pattern in snow, when the snow is tread upon by a user wearing the inventive detachable sole 500 no a pair of ski boots.
FIGS. 20, 21, and 22 each show a separate view of an alternate preferred latch embodiment 552 (“latch 552”), which is preferably formed from butyl rubber. By providing a pair of side walls 554 that include a mounting aperture 556, the latch 552 can be slid over the latch support 510 (of FIG. 17), and become stabilized about the latch mount portion 516 (of FIG. 17). Once slid into position, the configuration of the latch support 512 precludes shifting of the latch 552, relative to the latch mount portion 516, during normal use of the inventive detachable sole 500 of FIG. 23.
FIG. 23 provides an elevational view of the inventive detachable sole 500 attached to a ski boot 558, in preparation for use by a skier.
Flowchart 600 of FIG. 24 shows method steps of a process of making an inventive detachable sole (such as 500). The process commences at process start step 602, and continues at process step 604. At process step 604, a chassis (such as 504) is formed, and at process step 606, a sole portion (such as 506) is overmolded onto the chassis. At process step 608, an attachment member (such as 512) is affixed to the chassis, and at process step 610, a latch body (such as 522) is positioned adjacent a latch support (such as 510).
At process step 612, a latch door (such as 524) is aligned with and secured to the latch body. At process step 614, an adjustment member (such as 514) is positioned adjacent the attachment member and the latch support, and at process step 616, the adjustment member is threaded onto the attachment member and the latch support. Following process step 616, the process concludes at end process step 618.
Flowchart 700 of FIG. 25 shows method steps of a process of using an inventive detachable sole (such as 500). The process commences at start step 702, and continues at process step 704. At process step 704, a toe of a ski boot (such as 558) is placed into a toe confinement portion (such as 530) of a sole portion (such as 506). At process step 706, a heel of the ski boot is placed in mating contact with the sole portion. At process step 708, a latch assembly (such as 502) is pulled to position a latch (such as 508), of the latch assembly into a confinement position adjacent the ski boot, and the process concludes at end process step 710.
With respect to the above description, it is to be realized that the optimum dimensional relationships for the parts of the invention, to include variations in size, materials, shape, form, function and manner of operation, assembly and use, are deemed readily apparent and obvious to one skilled in the art, and all equivalent relationships to those illustrated in the drawings and described in the specification are intended to be encompassed by the present invention.
It will be clear that the present invention is well adapted to attain the ends and advantages mentioned as well as those inherent therein. While presently preferred embodiments have been described for purposes of this disclosure, numerous changes may be made which will readily suggest themselves to those skilled in the art and which are encompassed by the appended claims.

## Claims

1. A combination comprising:
an ankle and foot covering providing a contoured heel portion; and
a detachable sole configured for attachment to and detachment from said ankle and
foot covering, wherein said detachable sole comprises:
a chassis that includes at least a top portion supporting a web portion projecting from said top portion, and a plurality of side portions communicating with said top portion and forming an edge perimeter enclosing said web portion; and
a latch assembly attached to said web portion and configured for securement of said top portion adjacent said ankle and foot covering, the latch assembly providing a latch configured to conform to said contoured heel portion, a latch support interacting with said latch, an attachment member communicating with said chassis, and an adjustment member interposed between said latch support and said attachment member, wherein said adjustment member accommodates a snug conformance of said latch adjacent said heel portion, and in which said latch comprises:
a latch body communicating with said latch support;
a latch door abutting said latch body and confining said latch support between said latch body and said latch door; and
a fastener securing said latch door in abutting adjacency with said latch body to lockingly confine said latch support between said latch body and said latch door.

2. The combination of claim 1, further comprises said ankle and foot covering, in which said ankle and foot covering substantially immobilizes an ankle supporting said ankle and foot covering.

3. The combination of claim 2, in which said ankle and foot covering comprises a ski boot.

4. The combination of claim 1, in which said detachable sole further comprises:
a sole portion encapsulating said chassis, wherein said sole portion provides at least a toe confinement portion configured for confinement of said top portion adjacent said ankle and foot covering.

5. The combination of claim 4, in which said sole portion is formed from a quasi pliable polymer, said ankle and foot covering comprises a ski boot, and in which said ski boot comprises a toe portion of predetermined shape, in which said toe confinement portion comprises a free standing shape, wherein said free standing shape is altered to accommodate said predetermined shape upon an engagement of said toe confinement portion by said toe portion.

6. The combination of claim 1, in which said latch support comprises:
a latch mount portion;
an alignment portion projecting from said latch mount portion; and
a first threaded portion communicating with said alignment portion wherein said threaded portion is configured for interaction with said adjustment member.

7. The combination of claim 1, in which said attachment member comprises:
a chassis mount portion;
an extension portion projecting from said chassis mount portion; and
a second threaded portion communicating with said extension portion wherein said second threaded portion is configured for interaction with said adjustment member.

8. The combination of claim 7, in which said chassis mount portion further comprising an attachment aperture adjacent said chassis, and a fastener passing through said attachment aperture and communicating with said chassis to secure said chassis mount portion rotatably aligned adjacent said chassis.

9. The combination of claim 1, in which said chassis further includes at least an attachment feature interposed between and secured to said web portion and a side of the plurality of sides.

10. The combination of claim 1, in which said adjustment member comprises a coiled spring.

11. The combination of claim 10, in which said latch support comprises a first threaded portion, said attachment member comprises a second threaded portion, wherein each said first and second threaded portions provide female threads for interaction with said coil spring, and wherein said coil spring comprises a continuous coil, wherein said continuous coil provides a continuous male thread, which interacts with corresponding female threads of said first and second threaded portions to couple said latch support to said attachment member.

12. The combination of claim 11, in which said ankle and foot covering comprises a ski boot.

13. The combination of claim 1, in which each side of said plurality of sides provides a retention feature, and in which said detachable sole further comprises:
a sole portion encapsulating each said retention feature, wherein said sole portion provides at least a toe confinement portion configured for confinement of said top portion adjacent said ankle and foot covering; and
a latch assembly attached to said web portion and configured for securement of said top portion adjacent said ankle and foot covering.

14. The combination of claim 13, in which said latch assembly comprises:
a latch configured to conform to said contoured heel portion;
a latch support interacting with said latch;
an attachment member communicating with said chassis; and
an adjustment member interposed between said latch support and said attachment member, wherein said adjustment member accommodates a snug conformance of said latch adjacent said heel portion, and wherein said latch comprises:
a latch body communicating with said latch support;
a latch door abutting said latch body and confining said latch support between said latch body and said latch door; and
a fastener securing said latch door in abutting adjacency with said latch body to lockingly confine said latch support between said latch body and said latch door.

15. A method by steps comprising:
forming a chassis;
overmolding a sole onto said chassis to encapsulate a retention feature of said chassis;
affixing an attachment portion to said chassis;
positioning a latch body adjacent a latch support;
abutting the latch body to a latch door and confining said latch support between said latch body and said latch door;
securing the latch door to said latch body in abutting adjacency with a fastener to lockingly confine said latch support between said latch body and said latch door;
positioning an adjustment member adjacent an alignment portion projecting from said latch support and said attachment portion; and
threading said adjustment member onto said attachment portion and said alignment portion, wherein said adjustment member is a coiled spring.