CA2453940C - Composite plate - Google Patents
Composite plate Download PDFInfo
- Publication number
- CA2453940C CA2453940C CA002453940A CA2453940A CA2453940C CA 2453940 C CA2453940 C CA 2453940C CA 002453940 A CA002453940 A CA 002453940A CA 2453940 A CA2453940 A CA 2453940A CA 2453940 C CA2453940 C CA 2453940C
- Authority
- CA
- Canada
- Prior art keywords
- sole plate
- protective
- transverse
- sole
- recess
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000002131 composite material Substances 0.000 title description 2
- 230000001681 protective effect Effects 0.000 claims abstract description 45
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 229920001187 thermosetting polymer Polymers 0.000 claims description 3
- 230000003993 interaction Effects 0.000 claims description 2
- 239000012783 reinforcing fiber Substances 0.000 claims description 2
- 239000011810 insulating material Substances 0.000 abstract description 2
- 210000002683 foot Anatomy 0.000 description 19
- 239000002184 metal Substances 0.000 description 14
- 239000004033 plastic Substances 0.000 description 14
- 210000003371 toe Anatomy 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 230000035515 penetration Effects 0.000 description 6
- 238000009413 insulation Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 210000003108 foot joint Anatomy 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 210000001872 metatarsal bone Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002470 thermal conductor Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
- A43B13/16—Pieced soles
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
- A43B13/141—Soles; Sole-and-heel integral units characterised by the constructive form with a part of the sole being flexible, e.g. permitting articulation or torsion
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B7/00—Footwear with health or hygienic arrangements
- A43B7/32—Footwear with health or hygienic arrangements with shock-absorbing means
Landscapes
- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
A protective sole plate for protective footwear having a number of sole plate bodies, optionally of an electrically and thermally insulating material, joined together with transverse hinged joint(s) whereby each sole plate body can rotate about the transverse hinge relative to other sole plate bodies thereby enabling flexing of the sole plate while maintaining puncture resistance.
Description
COMPOSITE PLATE
FIEhD OF THE INVENTION
[0001]The present invention relates to an inner sole for protective shoes, which is made of rigid plastic bodies hinged together to provide flexing, is penetration resistant, thermally insulating and electrically insulating.
BACKGROUND OF THE ART
[0002jProtective shoes provide foot protection for those who work in a high risk environment. Protective shoes normally has penetration resistance in the sole and crushing resistance in the toe and metatarsal area.
[0003]Regarding the configuration of prior art protective penetration resistant soles, conventionally a metal inner sole plate is sandwiched between two layers 61 of fabric material and is bonded to the shoe sole. A protective metal shoe head is positioned on the shoe sole about the toe area. The metal inner sole plate prevents sharp tips from penetrating and the rigid protective shoe head protects the toes from injury from falling objects, or impact.
[0004]However, prior art protective soles have shortcomings in use. Conventional metal sole plates are often uncomfortable since it is difficult to fabricate metal in a pressing process with a smooth concave top surface to match the contours of a wearer's foot. The metal sole plate must have an adequate thickness to achieve penetration resistance, which complicates fabrication into a curved shape, reduces flexibility and thus diminishes the comfort of the shoe.
FIEhD OF THE INVENTION
[0001]The present invention relates to an inner sole for protective shoes, which is made of rigid plastic bodies hinged together to provide flexing, is penetration resistant, thermally insulating and electrically insulating.
BACKGROUND OF THE ART
[0002jProtective shoes provide foot protection for those who work in a high risk environment. Protective shoes normally has penetration resistance in the sole and crushing resistance in the toe and metatarsal area.
[0003]Regarding the configuration of prior art protective penetration resistant soles, conventionally a metal inner sole plate is sandwiched between two layers 61 of fabric material and is bonded to the shoe sole. A protective metal shoe head is positioned on the shoe sole about the toe area. The metal inner sole plate prevents sharp tips from penetrating and the rigid protective shoe head protects the toes from injury from falling objects, or impact.
[0004]However, prior art protective soles have shortcomings in use. Conventional metal sole plates are often uncomfortable since it is difficult to fabricate metal in a pressing process with a smooth concave top surface to match the contours of a wearer's foot. The metal sole plate must have an adequate thickness to achieve penetration resistance, which complicates fabrication into a curved shape, reduces flexibility and thus diminishes the comfort of the shoe.
[0005]The conventional metal sole plate and metal protective shoe head cannot provide effective electric shock resistance and thermal insulation. Therefore, conventional protective shoes are not well adapted for use in an environment where electric shock is a risk or where thermal resistance to heat and cold are required.
[0006]The shape of a conventional metal sole plate is substantially flat and does not include a concave upper surface to follow the shape of the wearer's foot sole.
Aside from the comfort factor, the flat shape results in protective coverage narrower than the wearer's foot sole and thus reduces the protection from sideways penetration prevention around the edges of the foot.
[0007]Conventional protective soles cannot provide an effective overall heat or cold resistance because the protective sole plate and protective shoe head are of metal which is a good thermal conductor and consequently is also a poor thermal insulator. Protective shoes are worn outdoors in construction or military environments and worn indoors in various industrial premises where the comfort of the wearer while exposed to heat and cold environments are a concern.
DISCLOSURE OF THE INVENTION
[0008]The invention provides a protective sole plate for protective footwear having a plurality of sole plate bodies, optionally of an electrically and thermally insulating material, joined together with at least one transverse hinged joint whereby each sole plate body can rotate about the transverse hinge relative to other sole plate bodies, each body including at least one transverse edge adapted for hinged interaction with an adjacent transverse edge of an adjacent sole plate body.
[0009] Objects of the invention will be apparent from review of the disclosure, drawings and description of the invention below.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010]Figure. 1 is an exploded perspective view of a rigid hinged inner sole plate according to one embodiment of the present invention;
[0011]Figure 2 is a longitudinal cross-sectional view of a protective shoe with the sole plate of Fig. 1 installed together with a protective toe cap;
[0012)Figure 3 is a top plan view of the rigid sole plate of Fig. 1;
(0013]Figure 4 is a bottom plan view of the rigid sole plate;
[0014]Figure 5 is a cross-sectional view, taken along line 5-5 of Figure 3;
[0015)Figure 6 is a cross-sectional view, taken along line 6-6 of Figure 3;
[0016]Figure 7 is a detail sectional view, of the hinged joint in Figure 5;
[0017]Figure 8 is a sectional view through a protective show with the sole plate of the present invention under a bending condition in use;
[0018]Figure 9 is a schematic cross-sectional view of the prior art one-piece protective sole; and [0019]Figure 10 is a schematic exploded perspective view of a prior art protective shoe.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
[0020]Referring to Figures 9 and 10 which illustrate a configuration of the conventional shoes, a shoe sole 60 is topped with a conventional metal inner sole plate 70 which is bonded together therewith. The metal inner sole plate 70 itself is sandwiched between two layers 61 of material, in order to obtain a better combination. A protective shoe head 71 which is made of metal material is positioned on the shoe sole 60 at a location corresponding to the wearer's toes.
[0021]Thus, the wearer's foot sole is protected by the inner sole plate 70. The metal inner sole plate 70 prevents sharp tips of an object fxom penetrating therethrough to injure the wearer's foot sole when the wearer's foot accidentally steps on the sharp tips of the object. The rigid protective shoe head 71 protects the vulnerable toes from being injured even when a heavy object falls thereon.
[0022]Referring to Figures 1-7, the present invention relates to an improvement of an inner sole configuration for protective shoes in which a rigid plastic inner sole plate 1 is bonded to a rubber shoe sole 50. A layer 51 of a material is bonded to each of the top and bottom surfaces of the rigid plastic inner sole plate 1. A protective shoe head 40 (as shown in Figure 2) is affixed to the shoe sole 50 in a position covering the wearer's toes.
[0023]In this configuration the rigid plastic inner sole plate 1 and the shoe head 40 are made of thermosetting resin with reinforcing fibers. The shoe head 40 however can also be of metal. The rigid plastic inner sole plate 1 is configured with first, second and third plate bodies 10, 20 and 30 positioned in a longitudinal sequence in correspondence with the positions of bendable portions of the wearer's foot sole where the foot joints are located.
The plate 1 includes a top surface with a concavity 100 (as shown in Fig. 6) according to bioengineering, thereby being adapted for supporting the wearer's foot sole. The plate 1 includes a bottom surface having a curved configuration 101 at the periphery thereof.
[0024]The first plate body 10 includes a transverse edge 11 at an end thereof adjacent to second plate body 20 and forming a transverse hinged joint therewith. The transverse edge 11 has at an upper part thereof a recess 110 extending laterally therethrough and defines at a lower part thereof a rounded extending flange 111 (as best shown in Fig. 5).
[0025]The second plate body 20 includes a transverse edge 21 at a first end thereof adjacent to the first plate body 10.
The transverse edge.21 has an extending flange 210 extending from an upper part thereof. The flange 210 is enabled to rest in the recess 110 of the first plate body 10. A clearance is formed between an end of the recess 110 of the first plate body 10 and an end of flange 210. The transverse edge 21 further includes a laterally extending rounded flange 211 ~(as shown in Fig. 5). The second plate body 20 includes a transverse edge 22 at a second end thereof opposite to the first end thereof. The transverse edge 22 includes a recess 220 formed at an upper part and extending laterally therethrough, and a laterally extending rounded flange 221 (as shown in Figs. 1 and 5). An appropriate clearance is formed at each of the opposite side margins of the hinged plate 1 between a lower part of the connecting portion 11 of the first plate body 10 and a lower part of the connecting portion 21 of the second plate body 20. The transverse edges 11 and 21 contact each other at a middle part thereof between the opposite side margins.
[0026JThe third plate body 30 includes a transverse edge 31 at first end thereof toward the second plate body 20. The transverse edge 31 has a flange 310 extending from an upper part thereof to rest in the recess 220 of the second plate body 20. A clearance is formed between an end of the recess 220 of the second plate body 20 and an end of the flange 310. An appropriate. clearance is formed at each of opposite side margins of the plate 1 between a lower part of the transverse edge 22 of the second plate body 20 and a lower part of the transverse edge 31 of the third plate body 30.
The transverse edges 22 and 31 contact each other at a middle part between the opposite side margins. Furthermore, the transverse edge~31 .includes a laterally extending rounded bottom end surface 311 (as shown in Figure 5 and 7). Thus, the first and second plate bodies 10, 20 are enabled to bend freely and rotate relative to each other about a transverse hinge.
[0027jThe third plate body 30 further includes a recess 32 formed in a lower part of a second end thereof opposite to the first end thereof for engaging a rim of a rigid plastic shoe head.
[0028]In such a configuration according to the present invention, the rigid plastic inner sole plate 1 benefits from the rigidity and solidity of the insulating plastic material, provides an optimal overall result of electric shock resistance, heat resistance and thermal insulation, and thereby improves the insulation safety of the protective shoes. Additionally, the rigid plastic inner _ 7 _ sole plate 1 provides the protection of the wearer's foot sole from injury resulting from sharp tips of an object penetrating the rubber shoe sole 50 of the protective shoes.
[0029)The rigid plastic inner sole plate 1 of the present invention has a concave top surface 100 which is better fitted to the wearer's foot soles, thereby providing a better coverage and support for the wearer's foot soles, and thus improving the comfort of the protective shoes.
Also because of the concave top surface 100, the rigid plastic inner sole plate 1 extends to wrap around the opposite side areas of the wearer's foot soles, forming a larger coverage for the wearer's foot soles. When a sharp tip of an object penetrates the shoe sole of the protective shoe at the side margins thereof, and then contacts the convex bottom surface 101 at the periphery of the plate 1, the sharp tip will be forced and guided to project laterally and outwardly, thereby being prevented from injuring the wearer's foot sole. Therefore, the safety of the protective shoes regarding lateral penetration prevention is significantly improved.
[0030)Furthermore, in accordance with the bendable areas of the wearer's foot sole at the joints thereof, the rigid plastic inner sole plate 1 of the present invention includes the first, second and third plate bodies 10, 20 and 30 which connect to one another at transverse hinged joints, and the plate 1 defines an appropriate clearance respectively between the transverse edges 11, 21 of the respective first and second plate bodies 10 and 20, between the transverse edges 22, 31 of the respective second and third plate bodies 20 and 30. Thus, the first, second and third plate bodies 10, 20 and 30 are freely bendable such that the respective. plate bodies 10, 20 and 30 are hinged to bend corresponding to various bending directions of the wearer's foot sole joints (as shown in Figure 8). The wearer's foot movement will not thus be restricted by the protective shoe, and the wearer will thus feel much more comfortable.
(0031]Conclusively, in contrast to the soles of the conventional protective shoes, the improvement of the rigid plastic inner sole configuration of the present invention results in much better safety and comfort of the protective shoes when in use.
THE LIST OF TEE REFERENCE NUMBERS
1 Rigid Plastic Inner Sole Plate First Plate Body 11 Transverse Edge 100 Concave Top Surface 101 Convex Bottom Surface 110 Recess 111 Flange Second Plate Body 21 Transverse Edge 210 Flange 211 Rounded Bottom End Surface 22 Transverse Edge 220 Recess 221 Flange Third Plate Body 31 Transverse Edge 310 Flange 311 Rounded Bottom End Surface 32 Recess ~ CA 02453940 2004-08-10 2 _ 40 Shoe Head 50 Shoe Sole 51 Layer of a Material 60 Shoe Sole 61 Layer of a Material 70 Inner Sole Plate 71 Protective Sole Head
[0006]The shape of a conventional metal sole plate is substantially flat and does not include a concave upper surface to follow the shape of the wearer's foot sole.
Aside from the comfort factor, the flat shape results in protective coverage narrower than the wearer's foot sole and thus reduces the protection from sideways penetration prevention around the edges of the foot.
[0007]Conventional protective soles cannot provide an effective overall heat or cold resistance because the protective sole plate and protective shoe head are of metal which is a good thermal conductor and consequently is also a poor thermal insulator. Protective shoes are worn outdoors in construction or military environments and worn indoors in various industrial premises where the comfort of the wearer while exposed to heat and cold environments are a concern.
DISCLOSURE OF THE INVENTION
[0008]The invention provides a protective sole plate for protective footwear having a plurality of sole plate bodies, optionally of an electrically and thermally insulating material, joined together with at least one transverse hinged joint whereby each sole plate body can rotate about the transverse hinge relative to other sole plate bodies, each body including at least one transverse edge adapted for hinged interaction with an adjacent transverse edge of an adjacent sole plate body.
[0009] Objects of the invention will be apparent from review of the disclosure, drawings and description of the invention below.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010]Figure. 1 is an exploded perspective view of a rigid hinged inner sole plate according to one embodiment of the present invention;
[0011]Figure 2 is a longitudinal cross-sectional view of a protective shoe with the sole plate of Fig. 1 installed together with a protective toe cap;
[0012)Figure 3 is a top plan view of the rigid sole plate of Fig. 1;
(0013]Figure 4 is a bottom plan view of the rigid sole plate;
[0014]Figure 5 is a cross-sectional view, taken along line 5-5 of Figure 3;
[0015)Figure 6 is a cross-sectional view, taken along line 6-6 of Figure 3;
[0016]Figure 7 is a detail sectional view, of the hinged joint in Figure 5;
[0017]Figure 8 is a sectional view through a protective show with the sole plate of the present invention under a bending condition in use;
[0018]Figure 9 is a schematic cross-sectional view of the prior art one-piece protective sole; and [0019]Figure 10 is a schematic exploded perspective view of a prior art protective shoe.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
[0020]Referring to Figures 9 and 10 which illustrate a configuration of the conventional shoes, a shoe sole 60 is topped with a conventional metal inner sole plate 70 which is bonded together therewith. The metal inner sole plate 70 itself is sandwiched between two layers 61 of material, in order to obtain a better combination. A protective shoe head 71 which is made of metal material is positioned on the shoe sole 60 at a location corresponding to the wearer's toes.
[0021]Thus, the wearer's foot sole is protected by the inner sole plate 70. The metal inner sole plate 70 prevents sharp tips of an object fxom penetrating therethrough to injure the wearer's foot sole when the wearer's foot accidentally steps on the sharp tips of the object. The rigid protective shoe head 71 protects the vulnerable toes from being injured even when a heavy object falls thereon.
[0022]Referring to Figures 1-7, the present invention relates to an improvement of an inner sole configuration for protective shoes in which a rigid plastic inner sole plate 1 is bonded to a rubber shoe sole 50. A layer 51 of a material is bonded to each of the top and bottom surfaces of the rigid plastic inner sole plate 1. A protective shoe head 40 (as shown in Figure 2) is affixed to the shoe sole 50 in a position covering the wearer's toes.
[0023]In this configuration the rigid plastic inner sole plate 1 and the shoe head 40 are made of thermosetting resin with reinforcing fibers. The shoe head 40 however can also be of metal. The rigid plastic inner sole plate 1 is configured with first, second and third plate bodies 10, 20 and 30 positioned in a longitudinal sequence in correspondence with the positions of bendable portions of the wearer's foot sole where the foot joints are located.
The plate 1 includes a top surface with a concavity 100 (as shown in Fig. 6) according to bioengineering, thereby being adapted for supporting the wearer's foot sole. The plate 1 includes a bottom surface having a curved configuration 101 at the periphery thereof.
[0024]The first plate body 10 includes a transverse edge 11 at an end thereof adjacent to second plate body 20 and forming a transverse hinged joint therewith. The transverse edge 11 has at an upper part thereof a recess 110 extending laterally therethrough and defines at a lower part thereof a rounded extending flange 111 (as best shown in Fig. 5).
[0025]The second plate body 20 includes a transverse edge 21 at a first end thereof adjacent to the first plate body 10.
The transverse edge.21 has an extending flange 210 extending from an upper part thereof. The flange 210 is enabled to rest in the recess 110 of the first plate body 10. A clearance is formed between an end of the recess 110 of the first plate body 10 and an end of flange 210. The transverse edge 21 further includes a laterally extending rounded flange 211 ~(as shown in Fig. 5). The second plate body 20 includes a transverse edge 22 at a second end thereof opposite to the first end thereof. The transverse edge 22 includes a recess 220 formed at an upper part and extending laterally therethrough, and a laterally extending rounded flange 221 (as shown in Figs. 1 and 5). An appropriate clearance is formed at each of the opposite side margins of the hinged plate 1 between a lower part of the connecting portion 11 of the first plate body 10 and a lower part of the connecting portion 21 of the second plate body 20. The transverse edges 11 and 21 contact each other at a middle part thereof between the opposite side margins.
[0026JThe third plate body 30 includes a transverse edge 31 at first end thereof toward the second plate body 20. The transverse edge 31 has a flange 310 extending from an upper part thereof to rest in the recess 220 of the second plate body 20. A clearance is formed between an end of the recess 220 of the second plate body 20 and an end of the flange 310. An appropriate. clearance is formed at each of opposite side margins of the plate 1 between a lower part of the transverse edge 22 of the second plate body 20 and a lower part of the transverse edge 31 of the third plate body 30.
The transverse edges 22 and 31 contact each other at a middle part between the opposite side margins. Furthermore, the transverse edge~31 .includes a laterally extending rounded bottom end surface 311 (as shown in Figure 5 and 7). Thus, the first and second plate bodies 10, 20 are enabled to bend freely and rotate relative to each other about a transverse hinge.
[0027jThe third plate body 30 further includes a recess 32 formed in a lower part of a second end thereof opposite to the first end thereof for engaging a rim of a rigid plastic shoe head.
[0028]In such a configuration according to the present invention, the rigid plastic inner sole plate 1 benefits from the rigidity and solidity of the insulating plastic material, provides an optimal overall result of electric shock resistance, heat resistance and thermal insulation, and thereby improves the insulation safety of the protective shoes. Additionally, the rigid plastic inner _ 7 _ sole plate 1 provides the protection of the wearer's foot sole from injury resulting from sharp tips of an object penetrating the rubber shoe sole 50 of the protective shoes.
[0029)The rigid plastic inner sole plate 1 of the present invention has a concave top surface 100 which is better fitted to the wearer's foot soles, thereby providing a better coverage and support for the wearer's foot soles, and thus improving the comfort of the protective shoes.
Also because of the concave top surface 100, the rigid plastic inner sole plate 1 extends to wrap around the opposite side areas of the wearer's foot soles, forming a larger coverage for the wearer's foot soles. When a sharp tip of an object penetrates the shoe sole of the protective shoe at the side margins thereof, and then contacts the convex bottom surface 101 at the periphery of the plate 1, the sharp tip will be forced and guided to project laterally and outwardly, thereby being prevented from injuring the wearer's foot sole. Therefore, the safety of the protective shoes regarding lateral penetration prevention is significantly improved.
[0030)Furthermore, in accordance with the bendable areas of the wearer's foot sole at the joints thereof, the rigid plastic inner sole plate 1 of the present invention includes the first, second and third plate bodies 10, 20 and 30 which connect to one another at transverse hinged joints, and the plate 1 defines an appropriate clearance respectively between the transverse edges 11, 21 of the respective first and second plate bodies 10 and 20, between the transverse edges 22, 31 of the respective second and third plate bodies 20 and 30. Thus, the first, second and third plate bodies 10, 20 and 30 are freely bendable such that the respective. plate bodies 10, 20 and 30 are hinged to bend corresponding to various bending directions of the wearer's foot sole joints (as shown in Figure 8). The wearer's foot movement will not thus be restricted by the protective shoe, and the wearer will thus feel much more comfortable.
(0031]Conclusively, in contrast to the soles of the conventional protective shoes, the improvement of the rigid plastic inner sole configuration of the present invention results in much better safety and comfort of the protective shoes when in use.
THE LIST OF TEE REFERENCE NUMBERS
1 Rigid Plastic Inner Sole Plate First Plate Body 11 Transverse Edge 100 Concave Top Surface 101 Convex Bottom Surface 110 Recess 111 Flange Second Plate Body 21 Transverse Edge 210 Flange 211 Rounded Bottom End Surface 22 Transverse Edge 220 Recess 221 Flange Third Plate Body 31 Transverse Edge 310 Flange 311 Rounded Bottom End Surface 32 Recess ~ CA 02453940 2004-08-10 2 _ 40 Shoe Head 50 Shoe Sole 51 Layer of a Material 60 Shoe Sole 61 Layer of a Material 70 Inner Sole Plate 71 Protective Sole Head
Claims (9)
1. A protective sole plate for protective footwear comprising:
a plurality of sole plate bodies joined together with at least one transverse hinged joint whereby each sole plate body can rotate about the transverse hinge relative to other sole plate bodies, each body including at least one transverse edge adapted for hinged interaction with an adjacent transverse edge of an adjacent sole plate body;
wherein said transverse hinged joint comprises a recess in one said transverse edge and an extending flange in the adjacent transverse edge adapted for rotationally engaging and overlapping the recess without interruption from one edge of said sole plate to another edge of said sole plate.
a plurality of sole plate bodies joined together with at least one transverse hinged joint whereby each sole plate body can rotate about the transverse hinge relative to other sole plate bodies, each body including at least one transverse edge adapted for hinged interaction with an adjacent transverse edge of an adjacent sole plate body;
wherein said transverse hinged joint comprises a recess in one said transverse edge and an extending flange in the adjacent transverse edge adapted for rotationally engaging and overlapping the recess without interruption from one edge of said sole plate to another edge of said sole plate.
2. A protective sole plate according to claim 1 comprising a first, a second and a third sole plate body in longitudinal alignment having one said transverse joint between the first and the second body, and a second said transverse joint between the second and the third body.
3. A protective sole plate according to claim 1 wherein the transverse hinged joint comprises: an upper flange and a lower recess in one said transverse edge, and a lower flange and an upper recess in the adjacent transverse edge.
4. A protective sole plate according to claim 1 wherein the recess arid the flange have rounded engaging surfaces.
5. A protective sole plate according to claim 1 wherein at least one sole plate body has a concave top surface.
6. A protective sole plate according to claim 1 wherein at least one sole plate body has a convex bottom surface.
7. A protective sole plate according to claim 1 comprising a toe sole plate body having a recessed toe rim in an bottom surface thereof.
8. A protective sole plate according to claim 1 wherein said one sole plate bodies are made of thermosetting resin.
9. A protective sole plate according to claim 8 wherein said one sole plate bodies are made of reinforcing fibers surrounded by said thermosetting resin.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW92210405 | 2003-05-06 | ||
| TW92210405U TW585023U (en) | 2003-06-06 | 2003-06-06 | Improved structure of internal base plate made of plastic steel for safety shoes |
| CN 03267840 CN2633059Y (en) | 2003-07-22 | 2003-07-22 | Inner botton plate structure improvement for safety shoes |
| CN03267840 | 2003-07-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2453940A1 CA2453940A1 (en) | 2004-11-06 |
| CA2453940C true CA2453940C (en) | 2008-01-08 |
Family
ID=33419309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002453940A Expired - Fee Related CA2453940C (en) | 2003-05-06 | 2003-12-17 | Composite plate |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US20040221489A1 (en) |
| CA (1) | CA2453940C (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7681333B2 (en) | 2004-10-29 | 2010-03-23 | The Timberland Company | Shoe footbed system with interchangeable cartridges |
| US7461470B2 (en) * | 2004-10-29 | 2008-12-09 | The Timberland Company | Shoe footbed system and method with interchangeable cartridges |
| US7762008B1 (en) | 2005-09-07 | 2010-07-27 | The Timberland Company | Extreme service footwear |
| US8082685B2 (en) * | 2005-10-19 | 2011-12-27 | Novation S.P.A. | Insole having puncture-resistant properties for safety footwear |
| US20080105760A1 (en) * | 2006-11-08 | 2008-05-08 | We-Flex, Llc | Suction-Mountable Aromatic Device and Method for Using the Same |
| US7814686B2 (en) | 2007-03-06 | 2010-10-19 | Nike, Inc. | Lightweight and flexible article of footwear |
| US8117769B2 (en) * | 2008-09-25 | 2012-02-21 | Munro & Company, Inc. | Cushioned shoe construction including toe and heel plates |
| US20100308548A1 (en) * | 2009-04-09 | 2010-12-09 | Meers Grant L | Skate shoes with selectively flexible sole |
| DE102010049298A1 (en) * | 2010-10-22 | 2012-04-26 | Fa. Mayer Gbr (Vertretungsberechtigte Gesellschafter: Herr Helmut Mayer, 88045 Friedrichshafen) | Safety shoe with protective cap |
| US9572394B2 (en) * | 2013-03-01 | 2017-02-21 | Nike, Inc. | Foot-support structures for articles of footwear |
| JP5902746B2 (en) * | 2014-04-26 | 2016-04-13 | 美津濃株式会社 | Sole structure of indoor sports shoes |
| US20250072556A1 (en) * | 2023-08-03 | 2025-03-06 | Under Armour, Inc. | Footwear with segmented plate |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4735003A (en) * | 1986-03-25 | 1988-04-05 | Haskon Corporation | Protective toe cap for footwear |
| GB2210771B (en) * | 1987-10-13 | 1991-04-03 | Dunlop Ltd | Footwear reinforcement |
| US4888888A (en) * | 1988-04-21 | 1989-12-26 | Ashton Douglas W | Sole protectors for shoes |
| IT1277026B1 (en) * | 1995-12-04 | 1997-11-04 | Global Sports Tech Inc | SPORTS SHOES WITH SOLE HAVING AT LEAST ONE PARTLY INTERESTING LAYER, THE SOLE ITSELF IN COMPOSITE MATERIAL |
| US6151803A (en) * | 1997-04-22 | 2000-11-28 | Charles; Nathaniel O. | Puncture resistant insole |
| US5996257A (en) * | 1998-05-14 | 1999-12-07 | William H. Kaufman Inc. | Puncture-resistant and impact-resistant safety shoe insert |
| US6889452B2 (en) * | 2001-11-14 | 2005-05-10 | Boot Royalty Company, L.P. | Insole for footwear |
-
2003
- 2003-12-03 US US10/726,886 patent/US20040221489A1/en not_active Abandoned
- 2003-12-17 CA CA002453940A patent/CA2453940C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2453940A1 (en) | 2004-11-06 |
| US20040221489A1 (en) | 2004-11-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20161219 |