Cross-Reference to Related Applications [0001] Not Applicable.

Statement Regarding Federally Sponsored Research or Development [0002] Not Applicable.

Appendix

[0003] Not Applicable.

Background of the Invention

Field of the Invention

[0004] The present invention pertains to a shoe having pluralities of lugs.

SUMMARY

[0005] One aspect of the disclosure is a shoe comprising a sole and an upper secured to the sole. The sole has a sole heel end and a sole toe end, and the sole extends along a shoe axis from the sole heel end to the sole toe end. The sole has a lateral side extending from the sole heel end to the sole toe end and a medial side extending from the sole heel end to the sole toe end. The sole extends transversely from the lateral side to the medial side. The sole includes a sole heel region, a sole midfoot region, a sole forefoot region, and a sole toe region. The sole heel region extends longitudinally from the sole heel end to the sole midfoot region. The sole midfoot region extends longitudinally from the sole heel region to the sole forefoot region. The sole forefoot region extends longitudinally from the sole midfoot region to the sole toe region. The sole toe region extends longitudinally from the sole forefoot region to the sole toe end. The sole has a bottom surface, a plurality of first lugs projecting downwardly from the sole bottom surface, and a plurality of second lugs projecting downwardly from the sole bottom surface. Each lug of the plurality of first lugs projects perpendicularly from the sole bottom surface along a longitudinal axis of such each first lug. Each first lugs has a proximal end at the sole bottom surface and a distal end opposite the proximal end. The distal end of each first lug has a distal end surface spaced from the sole bottom surface. The distal end surface of each first lug faces a first direction which is oblique relative to the longitudinal axis of such each first lug. Each second lug of the plurality of second lugs projects perpendicularly from the sole bottom surface along a longitudinal axis of such each second lug. Each second lug has a proximal end at the sole bottom surface and a distal end opposite the proximal end. The distal end of each second lug has a distal end surface spaced from the sole bottom surface. The distal end of each second lug faces a second direction which is oblique relative to the longitudinal axis of such each second lug, and the second direction is different from the first direction.

[0006] Further features and advantages, as well as the operation, are described in detail below with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS [0007] FIG. 1 is a perspective view of the medial side of the sole of a shoe having pluralities of lugs.

[0008] FIG. 2 is a perspective view of the lateral side of the sole of the shoe shown in Figure 1 .

[0009] FIG. 3 is a perspective view of the medial side of the sole of the shoe shown in Figure 1 .

[0010] FIG. 4 is a perspective view of the medial side of the sole of the shoe shown in Figure 1 . [0011] FIG. 5 is a front perspective view of the shoe shown in Figure 1.

[0012] FIG. 6 is a rear perspective view of the shoe shown in Figure 1 .

[0013] FIG. 7 is a perspective view showing the lateral side of the shoe shown in Figure 1 .

[0014] FIG. 8 is a perspective view showing the medial side of the shoe shown in Figure 1 .

[0015] FIG. 9 is a top perspective view of the shoe shown in Figure 1.

[0016] FIG. 10 is a bottom view of the show shown in Figure 1 .

[0017] FIG. 11 is a cross-sectional view taken along the plane of line 11-11 of FIG. 10.

[0018] FIG. 12 is a cross-sectional view taken along the plane of line 12-12 of FIG. 10.

[0019] FIG. 13 is a magnified perspective view of one of the first pluralities of lugs from the shoe shown in Figure 1 .

[0020] FIG. 14 is a magnified perspective view of one of the second pluralities of lugs from the show shown in Figure 1 .

[0021] Reference numerals in the written specification and in the figures indicate corresponding items.

DETAILED DESCRIPTION

[0022] An embodiment of a shoe, generally indicated by the reference number 20, is shown in Figures 1-10. The shoe 20 comprises a sole 22 and an upper 24, which is secured to the sole 22.

[0023] The sole 22 has a sole heel end 26 and a sole toe end 28. The sole 22 extends along a shoe axis from the sole heel end 26 to the sole toe end 28. The sole 22 has a lateral side 30 extending from the sole heel end 26 to the sole toe end 28, and a medial side 32 extending from the sole heel end 26 to the sole toe end 28. The sole 22 extends transversely from the lateral side 30 to the medial side 32. The sole 22 includes a sole heel region 34, a sole midfoot region 36, a sole forefoot region 38, and a sole toe region 40. The sole heel region 34 extends longitudinally from the sole heel end 26 to the sole midfoot region 36. The sole midfoot region 36 extends longitudinally from the sole heel region 34 to the sole forefoot region 38. The sole forefoot region 38 extends longitudinally from the sole midfoot region 36 to the sole toe region 40. The sole toe region 40 extends from the sole forefoot region 38 to the sole toe end 28.

[0024] The sole 22 has a sole bottom surface 42. As shown in Figure 3, the sole bottom surface 42 has a plurality of first rows 44 and a plurality of second rows 46. Each row of the plurality of first rows 44 may be a first row 48 comprised of a plurality of first lugs 50, which project generally downwardly from the sole bottom surface 42. Each of the plurality of first lugs 50 projects perpendicularly from the sole bottom surface 42 along a longitudinal axis of such each first lug. Similarly, each row of the plurality of second rows 46 may be a second row 52 comprised of a plurality of second lugs 54, which project generally downwardly from the sole bottom surface 42. Each of the plurality of second lugs 54 projects perpendicularly from the sole bottom surface along a longitudinal axis of such each second lug.

[0025] Each first row 48 is comprised of at least three of the plurality of first lugs 50, and may be devoid of any of the plurality of second lugs 54. Similarly, each second row 52 is comprised of at least three of the plurality of second lugs 54, and may be devoid of any of the plurality of first lugs 50. In the embodiment of FIGS. 1-10, except for the rows in the sole midfoot region 36, each first row 40 extends from adjacent the lateral side 30 to adjacent the medial side 32 and each second row 42 extends from adjacent the lateral side 30 to adjacent the medial side 32. As described in greater detail below, each lug of the plurality of first lugs 50 may be slanted in a first direction (e.g., toward the medial side 32 of the sole 22), and each lug of the plurality of second lugs 54 may be slanted in a second direction, which is different from the first direction (e.g., toward the lateral side 30 of the sole 22).

[0026] Each first row 48 may be adjacent at least one second row 52. As shown in Figures 1-3 and 10, in some embodiments no two first rows 48 are adjacent one another, and no two second rows 52 are adjacent one another. Each first row 48 and second row 52 may be diagonal relative to the shoe axis. Additionally, each first row 48 may be generally parallel with each second row 52. [0027] The sole heel region 34 may include at least three lugs of the plurality of first lugs 50, and may also include at least three lugs of the plurality of second lugs 54. The sole midfoot region 36 may include at least three lugs of the plurality of first lugs 50, and may also include at least three lugs of the plurality of second lugs 54. The sole forefoot region 38 may include at least three lugs of the plurality of first lugs 50, and may also include at least three lugs of the plurality of second lugs 54. The sole toe region 40 may include at least three lugs of the plurality of first lugs 50, and may also include at least three lugs of the plurality of second lugs 54. The shoe 20 preferably has at least fifty lugs, more preferably has at least one hundred lugs, more preferably has at least one hundred fifty lugs, and more preferably has at least one hundred seventy five (175) lugs. Preferably, the number of first lugs 50 is the same as the number of second lugs 54, plus or minus 20 percent. [0028] As shown in Figures 11-14, each lug of the plurality of first lugs 50 has a proximal end 56 at the sole bottom surface 42 and a distal end 58 opposite the proximal end 56. The distal end 58 of each of the plurality of first lugs 50 has a distal end surface 60 spaced from the sole bottom surface 42. The distal end surface 60 of each of the plurality of first lugs 50 faces a first direction which is oblique relative to the longitudinal axis of such each first lug.

[0029] Each distal end surface 60 of the plurality of first lugs 50 may have a first lug minimum length l_ _a and a first lug maximum length Lb The first lug minimum length L _a corresponds to the distance from the sole bottom surface 42 to a point on the distal end surface 60 closest to the sole bottom surface 42. The first lug maximum length Lb corresponds to the distance from the sole bottom surface 42 to a point on the distal end surface 60 farthest from the sole bottom surface 42. The first lug minimum length L _a is between 30% and 80% of the first lug maximum length Lb.

[0030] The distal end surfaces 60 of each of the plurality of first lugs 50 may be sloped at an angle OFL between 20° and 80° relative to the longitudinal axis of such each first lug, and are preferably sloped at an angle OFL between 45° and 75° relative to the longitudinal axis of such each first lug. More preferably, the distal end surfaces 60 of each of the plurality of first lugs 50 may be sloped at an angle OFL between 55° and 65° relative to the longitudinal axis of such each first lug.

[0031] Each of the plurality of first lugs 50 may be cylindrical in shape, with each cylinder being a circular cylinder, an oval cylinder, or a polygonal cylinder. Additionally, each of the plurality of first lugs 50 may be of a circular shape in a cross-section taken through such each first lug and perpendicular to the longitudinal axis of such each first lug, with the diameter changing from the proximal end to the distal end. It should be understood that each of the plurality of first lugs 50 may have a variety of cross-sectional shapes, such as a triangle, square, rectangle, or octagon.

[0032] Each lug of the plurality of second lugs 54 has a proximal end 62 at the sole bottom surface 42 and a distal end 64 opposite the proximal end 62. The distal end 64 of each second lug has a distal end surface 66 spaced from the sole bottom surface 42. The distal end surface 66 of each of the plurality of second lugs 54 faces a second direction which is oblique relative to the longitudinal axis of such each second lug, and the second direction is different than the first direction. [0033] Each of the plurality of second lugs 54 may be cylindrical in shape, with each cylinder being a circular cylinder, an oval cylinder, or a polygonal cylinder. Additionally, each of the plurality of second lugs 54 may be of a circular shape in a cross-section taken through such each second lug and perpendicular to the longitudinal axis of such each second lug, with the diameter changing from the proximal end to the distal end. It should be understood that each of the plurality of second lugs 54 may have a variety of cross-sectional shapes, such as a triangle, square, rectangle, or octagon.

[0034] Each distal end surface 66 of the plurality of second lugs 54 may have a second lug minimum length U and a second lug maximum length Ld. The second lug minimum length U corresponds to the distance from the sole bottom surface 42 to a point on the distal end surface 66 closest to the sole bottom surface 42. The second lug maximum length Ld corresponds to the distance from the sole bottom surface 42 to a point on the distal end surface 66 farthest from the sole bottom surface 42. The second lug minimum length U is between 30% and 80% of the second lug maximum length Ld.

[0035] The first lug minimum length l_ _a may be on the medial side of the first plurality of lugs 50, and the second lug minimum length U may be on the lateral side of the second plurality of lugs 54. Additionally, the first lug maximum length Lb may be on the lateral side of the first plurality of lugs 50, and the second lug maximum length Ld may be on the medial side of the second plurality of lugs 54. [0036] The distal end surfaces 66 of the plurality of second lugs 54 may be sloped at an angle OSL between 20° and 80° relative to the longitudinal axis of such each second lug, and are preferably sloped at an angle OSL between 45° and 75° relative to the longitudinal axis of such each second lug. More preferably, the distal end surfaces 66 of each of the plurality of second lugs 54 may be sloped at an angle OSL between 55° and 65° relative to the longitudinal axis of such each second lug.

[0037] In view of the foregoing, it should be appreciated that the invention has several advantages over the prior art.

[0038] It should also be understood that when introducing elements of the present invention in the claims or in the above description of exemplary embodiments of the invention, the terms "comprising," "including," and "having" are intended to be open-ended and mean that there may be additional elements other than the listed elements. Additionally, the term "portion" should be construed as meaning some or all of the item or element that it qualifies. Moreover, use of identifiers such as first, second, and third should not be construed in a manner imposing any relative position or time sequence between limitations. [0039] As various modifications could be made in the constructions and methods herein described and illustrated without departing from the scope of the invention, it is intended that all matter contained in the foregoing description or shown in the accompanying drawings shall be interpreted as illustrative rather than limiting. Thus, the breadth and scope of the present invention should not be limited by any of the above-described exemplary embodiments, but should be defined only in accordance with the following claims appended hereto and their equivalents.