CA3136924A1 - Shock-absorbing helmet - Google Patents
Shock-absorbing helmet Download PDFInfo
- Publication number
- CA3136924A1 CA3136924A1 CA3136924A CA3136924A CA3136924A1 CA 3136924 A1 CA3136924 A1 CA 3136924A1 CA 3136924 A CA3136924 A CA 3136924A CA 3136924 A CA3136924 A CA 3136924A CA 3136924 A1 CA3136924 A1 CA 3136924A1
- Authority
- CA
- Canada
- Prior art keywords
- shell
- shock
- newtonian
- absorbing helmet
- interior
- 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.)
- Pending
Links
- 239000006260 foam Substances 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 12
- 238000013461 design Methods 0.000 description 9
- 208000027418 Wounds and injury Diseases 0.000 description 5
- 230000006378 damage Effects 0.000 description 5
- 208000014674 injury Diseases 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 239000011359 shock absorbing material Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000001351 cycling effect Effects 0.000 description 2
- 229920001684 low density polyethylene Polymers 0.000 description 2
- 239000004702 low-density polyethylene Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 206010010254 Concussion Diseases 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003562 lightweight material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/10—Linings
- A42B3/12—Cushioning devices
- A42B3/121—Cushioning devices with at least one layer or pad containing a fluid
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/10—Linings
- A42B3/12—Cushioning devices
- A42B3/124—Cushioning devices with at least one corrugated or ribbed layer
Abstract
A shock-absorbing helmet comprises an exterior shell and an interior shell joined along respective circumferential edges. The interior shell is adapted to fit a wearer's head. A non-Newtonian medium is disposed between the interior shell and the exterior shell. The non-Newtonian medium is a shear thinning non-Newtonian foam or a shear thinning non-Newtonian liquid. At least one of opposite surfaces of the exterior shell and the interior shell comprises means for enlarging a surface area thereof. The opposite surfaces are in contact with the non-Newtonian medium.
Description
SHOCK-ABSORBING HELMET
FIELD OF THE INVENTION
The present invention relates to protective headgear, and more particularly to a shock-absorbing helmet.
BACKGROUND OF THE INVENTION
Helmets are used by athletes in many sports as well as by people in other applications to protect the head of the wearer from injuries and, in particular, from injuries caused by concussive impacts. The helmets protect the brain by reducing impact loading and accelerations experienced by the wearer's head. Particularly, in sports such as, for example, hockey, football, cycling, ski racing, and motor racing, significant concussive impacts can be encountered and with the increasing awareness of the significant injuries that are caused by concussive impacts there is an increasing need for a helmet design that is capable of substantially reducing the risk of injury when experiencing concussive impacts.
Shock reducing helmet designs and materials employed, intended to protect a wearers head from shock-based injuries and concussions, are well known in the art. Materials and the geometry of Date recue / Date received 2021-11-02 the various components of a helmet can be adjusted to mitigate the concussive impact experienced by the wearer's head.
Unfortunately, present-day helmet designs and materials employed require substantial quantities of shock absorbing material in order to provide sufficient protection. The employment of large quantities of shock absorbing material results in large helmets having a considerable weight, substantially impeding the wearer's movements when practicing a sport such as, for example, hockey, football, cycling, and racing.
It is desirable to provide a shock-absorbing helmet that substantially reduces concussive impacts on a wearer's head.
It is also desirable to provide a shock-absorbing helmet that substantially reduces concussive impacts on a wearer's head and does not impede the wearer's movements.
It is also desirable to provide a shock-absorbing helmet that is compact in size and light weight.
SUMMARY OF THE INVENTION
Accordingly, one object of the present invention is to provide a shock-absorbing helmet that substantially reduces concussive impacts on a wearer's head.
Date recue / Date received 2021-11-02 Another object of the present invention is to provide a shock-absorbing helmet that substantially reduces concussive impacts on a wearer's head and does not impede the wearer's movements.
Another object of the present invention is to provide a shock-absorbing helmet that is compact in size and light weight.
According to one aspect of the present invention, there is provided a shock-absorbing helmet.
The shock-absorbing helmet comprises an exterior shell. An interior shell is joined with the exterior shell along respective circumferential edges. The interior shell is adapted to fit a wearer's head. A non-Newtonian medium is disposed between the interior shell and the exterior shell.
According to the aspect of the present invention, there is provided a shock-absorbing helmet. The shock-absorbing helmet comprises an exterior shell. An interior shell is joined with the exterior shell along respective circumferential edges. The interior shell is adapted to fit a wearer's head.
A non-Newtonian medium is disposed between the interior shell and the exterior shell. The non-Newtonian medium is a shear thinning non-Newtonian foam or a shear thinning non-Newtonian liquid. At least one of opposite surfaces of the exterior shell and the interior shell comprises means for enlarging a surface area thereof. The opposite surfaces are in contact with the non-Newtonian medium.
According to the aspect of the present invention, there is provided a shock-absorbing helmet. The shock-absorbing helmet comprises an exterior shell. An interior shell is joined with the exterior Date recue / Date received 2021-11-02 shell along respective circumferential edges. The interior shell is adapted to fit a wearer's head.
A non-Newtonian medium is disposed between the interior shell and the exterior shell. The non-Newtonian medium is a shear thinning non-Newtonian foam or a shear thinning non-Newtonian liquid. Opposite surfaces of the exterior shell and the interior shell comprise bubbles for enlarging a surface area thereof. The opposite surfaces are in contact with the non-Newtonian medium. Shape, size, and placement of the bubbles may vary depending on design preferences.
According to the aspect of the present invention, there is provided a shock-absorbing helmet. The shock-absorbing helmet comprises an exterior shell. An interior shell is joined with the exterior shell along respective circumferential edges. The interior shell is adapted to fit a wearer's head.
A non-Newtonian medium is disposed between the interior shell and the exterior shell. The non-Newtonian medium is a shear thinning non-Newtonian foam or a shear thinning non-Newtonian liquid. Opposite surfaces of the exterior shell and the interior shell comprise ridges extending therefrom for enlarging a surface area thereof. The opposite surfaces are in contact with the non-Newtonian medium.
The advantage of the present invention is that it provides a shock-absorbing helmet that substantially reduces concussive impacts on a wearer's head.
A further advantage of the present invention is that it provides a shock-absorbing helmet that substantially reduces concussive impacts on a wearer's head and does not impede the wearer's movements.
Date recue / Date received 2021-11-02 A further advantage of the present invention is that it provides a shock-absorbing helmet that is compact in size and light weight.
BRIEF DESCRIPTION OF THE DRAWINGS
A preferred embodiment of the present invention is described below with reference to the accompanying drawings, in which:
Figures 1 and 2 are simplified block diagrams illustrating in a side view and a cross-sectional view, respectively, a shock-absorbing helmet according to a preferred embodiment of the invention;
Figures 3 to 8 are simplified block diagram illustrating in a cross-sectional detail different implementations of means for enlarging a surface area of the exterior shell and the interior shell of the shock-absorbing helmet according to the preferred embodiment of the invention;
Figure 9 is a simplified block diagram illustrating von Mises stress transmissibility of a prototype design of the shock-absorbing helmet according to the preferred embodiment of the invention; and, Date recue / Date received 2021-11-02 Figure 10 is a simplified block diagram illustrating in a cross-sectional detail another implementation of means for enlarging a surface area of the exterior shell and the interior shell of the shock-absorbing helmet according to the preferred embodiment of the invention.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the invention belongs.
Although any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present invention, the preferred methods and materials are now described.
Referring to Figures 1 to 10 a shock-absorbing helmet 100 according to a preferred embodiment of the invention is provided. As illustrated in Figures 1 and 2, the shock-absorbing helmet 100 comprises two shells, an exterior shell 102 and an interior shell 104. The interior shell 104 is joined with the exterior shell 102 along respective circumferential edges, thus forming an enclosure therebetween. The interior shell 104 is adapted to fit a wearer's head. A non-Newtonian medium 106 is disposed inside the enclosure between the interior shell 104 and the exterior shell 102, as illustrated in the detail in Figures 3 to 8 and 10.
Date recue / Date received 2021-11-02 In shock absorption it is desirable to use materials that will deform substantially for absorbing energy. Shock absorbing materials are divided into Newtonian and non-Newtonian materials depending on their strain response to shear deformation. A Newtonian material has a linear response while non-Newtonian materials do not. Two non-Newtonian responses are possible ¨
shear thickening and shear thinning. For shock absorption a shear thinning material is employed.
The shock-absorbing helmet 100 comprises a shear thinning non-Newtonian medium sandwiched between the exterior shell 102 and the interior shell 104. The exterior shell 102 and the interior shell 104 are made of a substantially stiff and lightweight material such as, for example, a PolyCarbonate (PC) material. Preferably, at least one of opposite surfaces of the exterior shell 102 and the interior shell 104, which are in contact with the non-Newtonian medium 106, comprises means for enlarging a surface area thereof. Further preferably, both surfaces comprise means for enlarging a surface area thereof such as, for example, bubbled shaped protrusions extending therefrom.
Due to its shear thinning non-Newtonian qualities the medium 106 stiffens when exposed to impact forces. With the protrusions increasing the surface area exposed to the non-Newtonian medium 106 the impact forces through the helmet 100 are further diffused, thus substantially reducing the impact forces experienced on the inside surface of the helmet 100 in contact with the wearer's head. The non-Newtonian medium 106 may be provided as a non-Newtonian fluid or as a non-Newtonian foam such as, for example, commercially available D30 non-Newtonian foam.
Date recue / Date received 2021-11-02 The interior shell 104 is shaped and sized to fit a wearer's head, either in a custom size or in one of a number of predetermined sizes that are adaptable for use by multiple wearers. Optionally, the inside of the interior shell 104 may be fitted with one or more layers of foam 108 such as, for example, commercially available Low Density PolyEthylene (LDPE) foam, to increase comfort and/or to improve hold of the helmet 100 in an appropriate position on the wearer's head. Further optionally, a steel shell 110 is disposed onto the outward facing surface of the exterior shell 102 to provide further protection in high impact situations experienced, for example, in motor racing.
Depending on design preferences protrusions of various sizes and shapes may be employed, examples of which will be described hereinbelow. Figure 3 illustrates a section of the helmet 100 with the protrusions being provided as bubbles having sphere type shape. The bubbles of the exterior shell 102 and the bubbles of the interior shell 104 are placed such that a bubble of the exterior shell 102 is placed opposite a bubble of the interior shell 104. The block arrow in Figure 3 indicates the direction of the impact forces. In Figure 4 the size of the bubbles is changed compared to Figure 3.
The bubbles of the exterior shell 102 and the bubbles of the interior shell 104 may be placed such that a bubble of the exterior shell 102 faces a space between bubbles of the interior shell 104, as illustrated in Figure 5.
Furthermore, the bubbles may have different shapes such as an ellipsoid type shape, as illustrated in Figure 6, or an elongated shape, as illustrated in Figure 7.
Date recue / Date received 2021-11-02 A sample test was conducted using a prototype design of the shock-absorbing helmet 100 having a 20 mm x 5 mm bubble configuration as illustrated in Figure 8. In a computerized drop simulation, the von Mises stress was monitored at six different nodes of the exterior shell 102 and at six nodes of the interior shell 104. Calculated drop test values at each node are averaged and graphed ¨ the difference between the exterior shell 102 and interior shell 104 responses shown in Figure 9 indicate the force transmitted stability of the shells, including the demonstration that stress transmitted stability remained reasonably constant and low for the interior shell 104 measurements, even when extreme force was exerted onto the exterior shell 102. The prototype design substantially reduced the stress transmitted therethrough, thus substantially reducing the forces acting on the wearer's head.
Referring to Figure 10, depending on design preferences, the protrusions may also be provided as ridges extending from the exterior shell 102 and the interior shell 104 which may be, for example, straight or curved, oriented parallel and/or perpendicular to each other.
The present invention has been described herein with regard to preferred embodiments.
However, it will be obvious to persons skilled in the art that a number of variations and modifications can be made without departing from the scope of the invention as described herein.
Date recue / Date received 2021-11-02
FIELD OF THE INVENTION
The present invention relates to protective headgear, and more particularly to a shock-absorbing helmet.
BACKGROUND OF THE INVENTION
Helmets are used by athletes in many sports as well as by people in other applications to protect the head of the wearer from injuries and, in particular, from injuries caused by concussive impacts. The helmets protect the brain by reducing impact loading and accelerations experienced by the wearer's head. Particularly, in sports such as, for example, hockey, football, cycling, ski racing, and motor racing, significant concussive impacts can be encountered and with the increasing awareness of the significant injuries that are caused by concussive impacts there is an increasing need for a helmet design that is capable of substantially reducing the risk of injury when experiencing concussive impacts.
Shock reducing helmet designs and materials employed, intended to protect a wearers head from shock-based injuries and concussions, are well known in the art. Materials and the geometry of Date recue / Date received 2021-11-02 the various components of a helmet can be adjusted to mitigate the concussive impact experienced by the wearer's head.
Unfortunately, present-day helmet designs and materials employed require substantial quantities of shock absorbing material in order to provide sufficient protection. The employment of large quantities of shock absorbing material results in large helmets having a considerable weight, substantially impeding the wearer's movements when practicing a sport such as, for example, hockey, football, cycling, and racing.
It is desirable to provide a shock-absorbing helmet that substantially reduces concussive impacts on a wearer's head.
It is also desirable to provide a shock-absorbing helmet that substantially reduces concussive impacts on a wearer's head and does not impede the wearer's movements.
It is also desirable to provide a shock-absorbing helmet that is compact in size and light weight.
SUMMARY OF THE INVENTION
Accordingly, one object of the present invention is to provide a shock-absorbing helmet that substantially reduces concussive impacts on a wearer's head.
Date recue / Date received 2021-11-02 Another object of the present invention is to provide a shock-absorbing helmet that substantially reduces concussive impacts on a wearer's head and does not impede the wearer's movements.
Another object of the present invention is to provide a shock-absorbing helmet that is compact in size and light weight.
According to one aspect of the present invention, there is provided a shock-absorbing helmet.
The shock-absorbing helmet comprises an exterior shell. An interior shell is joined with the exterior shell along respective circumferential edges. The interior shell is adapted to fit a wearer's head. A non-Newtonian medium is disposed between the interior shell and the exterior shell.
According to the aspect of the present invention, there is provided a shock-absorbing helmet. The shock-absorbing helmet comprises an exterior shell. An interior shell is joined with the exterior shell along respective circumferential edges. The interior shell is adapted to fit a wearer's head.
A non-Newtonian medium is disposed between the interior shell and the exterior shell. The non-Newtonian medium is a shear thinning non-Newtonian foam or a shear thinning non-Newtonian liquid. At least one of opposite surfaces of the exterior shell and the interior shell comprises means for enlarging a surface area thereof. The opposite surfaces are in contact with the non-Newtonian medium.
According to the aspect of the present invention, there is provided a shock-absorbing helmet. The shock-absorbing helmet comprises an exterior shell. An interior shell is joined with the exterior Date recue / Date received 2021-11-02 shell along respective circumferential edges. The interior shell is adapted to fit a wearer's head.
A non-Newtonian medium is disposed between the interior shell and the exterior shell. The non-Newtonian medium is a shear thinning non-Newtonian foam or a shear thinning non-Newtonian liquid. Opposite surfaces of the exterior shell and the interior shell comprise bubbles for enlarging a surface area thereof. The opposite surfaces are in contact with the non-Newtonian medium. Shape, size, and placement of the bubbles may vary depending on design preferences.
According to the aspect of the present invention, there is provided a shock-absorbing helmet. The shock-absorbing helmet comprises an exterior shell. An interior shell is joined with the exterior shell along respective circumferential edges. The interior shell is adapted to fit a wearer's head.
A non-Newtonian medium is disposed between the interior shell and the exterior shell. The non-Newtonian medium is a shear thinning non-Newtonian foam or a shear thinning non-Newtonian liquid. Opposite surfaces of the exterior shell and the interior shell comprise ridges extending therefrom for enlarging a surface area thereof. The opposite surfaces are in contact with the non-Newtonian medium.
The advantage of the present invention is that it provides a shock-absorbing helmet that substantially reduces concussive impacts on a wearer's head.
A further advantage of the present invention is that it provides a shock-absorbing helmet that substantially reduces concussive impacts on a wearer's head and does not impede the wearer's movements.
Date recue / Date received 2021-11-02 A further advantage of the present invention is that it provides a shock-absorbing helmet that is compact in size and light weight.
BRIEF DESCRIPTION OF THE DRAWINGS
A preferred embodiment of the present invention is described below with reference to the accompanying drawings, in which:
Figures 1 and 2 are simplified block diagrams illustrating in a side view and a cross-sectional view, respectively, a shock-absorbing helmet according to a preferred embodiment of the invention;
Figures 3 to 8 are simplified block diagram illustrating in a cross-sectional detail different implementations of means for enlarging a surface area of the exterior shell and the interior shell of the shock-absorbing helmet according to the preferred embodiment of the invention;
Figure 9 is a simplified block diagram illustrating von Mises stress transmissibility of a prototype design of the shock-absorbing helmet according to the preferred embodiment of the invention; and, Date recue / Date received 2021-11-02 Figure 10 is a simplified block diagram illustrating in a cross-sectional detail another implementation of means for enlarging a surface area of the exterior shell and the interior shell of the shock-absorbing helmet according to the preferred embodiment of the invention.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the invention belongs.
Although any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present invention, the preferred methods and materials are now described.
Referring to Figures 1 to 10 a shock-absorbing helmet 100 according to a preferred embodiment of the invention is provided. As illustrated in Figures 1 and 2, the shock-absorbing helmet 100 comprises two shells, an exterior shell 102 and an interior shell 104. The interior shell 104 is joined with the exterior shell 102 along respective circumferential edges, thus forming an enclosure therebetween. The interior shell 104 is adapted to fit a wearer's head. A non-Newtonian medium 106 is disposed inside the enclosure between the interior shell 104 and the exterior shell 102, as illustrated in the detail in Figures 3 to 8 and 10.
Date recue / Date received 2021-11-02 In shock absorption it is desirable to use materials that will deform substantially for absorbing energy. Shock absorbing materials are divided into Newtonian and non-Newtonian materials depending on their strain response to shear deformation. A Newtonian material has a linear response while non-Newtonian materials do not. Two non-Newtonian responses are possible ¨
shear thickening and shear thinning. For shock absorption a shear thinning material is employed.
The shock-absorbing helmet 100 comprises a shear thinning non-Newtonian medium sandwiched between the exterior shell 102 and the interior shell 104. The exterior shell 102 and the interior shell 104 are made of a substantially stiff and lightweight material such as, for example, a PolyCarbonate (PC) material. Preferably, at least one of opposite surfaces of the exterior shell 102 and the interior shell 104, which are in contact with the non-Newtonian medium 106, comprises means for enlarging a surface area thereof. Further preferably, both surfaces comprise means for enlarging a surface area thereof such as, for example, bubbled shaped protrusions extending therefrom.
Due to its shear thinning non-Newtonian qualities the medium 106 stiffens when exposed to impact forces. With the protrusions increasing the surface area exposed to the non-Newtonian medium 106 the impact forces through the helmet 100 are further diffused, thus substantially reducing the impact forces experienced on the inside surface of the helmet 100 in contact with the wearer's head. The non-Newtonian medium 106 may be provided as a non-Newtonian fluid or as a non-Newtonian foam such as, for example, commercially available D30 non-Newtonian foam.
Date recue / Date received 2021-11-02 The interior shell 104 is shaped and sized to fit a wearer's head, either in a custom size or in one of a number of predetermined sizes that are adaptable for use by multiple wearers. Optionally, the inside of the interior shell 104 may be fitted with one or more layers of foam 108 such as, for example, commercially available Low Density PolyEthylene (LDPE) foam, to increase comfort and/or to improve hold of the helmet 100 in an appropriate position on the wearer's head. Further optionally, a steel shell 110 is disposed onto the outward facing surface of the exterior shell 102 to provide further protection in high impact situations experienced, for example, in motor racing.
Depending on design preferences protrusions of various sizes and shapes may be employed, examples of which will be described hereinbelow. Figure 3 illustrates a section of the helmet 100 with the protrusions being provided as bubbles having sphere type shape. The bubbles of the exterior shell 102 and the bubbles of the interior shell 104 are placed such that a bubble of the exterior shell 102 is placed opposite a bubble of the interior shell 104. The block arrow in Figure 3 indicates the direction of the impact forces. In Figure 4 the size of the bubbles is changed compared to Figure 3.
The bubbles of the exterior shell 102 and the bubbles of the interior shell 104 may be placed such that a bubble of the exterior shell 102 faces a space between bubbles of the interior shell 104, as illustrated in Figure 5.
Furthermore, the bubbles may have different shapes such as an ellipsoid type shape, as illustrated in Figure 6, or an elongated shape, as illustrated in Figure 7.
Date recue / Date received 2021-11-02 A sample test was conducted using a prototype design of the shock-absorbing helmet 100 having a 20 mm x 5 mm bubble configuration as illustrated in Figure 8. In a computerized drop simulation, the von Mises stress was monitored at six different nodes of the exterior shell 102 and at six nodes of the interior shell 104. Calculated drop test values at each node are averaged and graphed ¨ the difference between the exterior shell 102 and interior shell 104 responses shown in Figure 9 indicate the force transmitted stability of the shells, including the demonstration that stress transmitted stability remained reasonably constant and low for the interior shell 104 measurements, even when extreme force was exerted onto the exterior shell 102. The prototype design substantially reduced the stress transmitted therethrough, thus substantially reducing the forces acting on the wearer's head.
Referring to Figure 10, depending on design preferences, the protrusions may also be provided as ridges extending from the exterior shell 102 and the interior shell 104 which may be, for example, straight or curved, oriented parallel and/or perpendicular to each other.
The present invention has been described herein with regard to preferred embodiments.
However, it will be obvious to persons skilled in the art that a number of variations and modifications can be made without departing from the scope of the invention as described herein.
Date recue / Date received 2021-11-02
Claims (12)
1. A shock-absorbing helmet comprising:
a. an exterior shell;
b. an interior shell joined with the exterior shell along respective circumferential edges, the interior shell being adapted to fit a wearer's head; and c. a non-Newtonian medium disposed between the interior shell and the exterior shell.
a. an exterior shell;
b. an interior shell joined with the exterior shell along respective circumferential edges, the interior shell being adapted to fit a wearer's head; and c. a non-Newtonian medium disposed between the interior shell and the exterior shell.
2. The shock-absorbing helmet according to claim 1 wherein the non-Newtonian medium is a shear thinning medium.
3. The shock-absorbing helmet according to claim 2 wherein the non-Newtonian medium is a non-Newtonian foam or a non-Newtonian liquid.
4. The shock-absorbing helmet according to claim 3 wherein at least one of opposite surfaces of the exterior shell and the interior shell comprises means for enlarging a surface area thereof, the opposite surfaces being in contact with the non-Newtonian medium.
5. The shock-absorbing helmet according to claim 4 wherein the surface of the exterior shell and the surface of the interior shell are bubbled.
6. The shock-absorbing helmet according to claim 5 wherein the bubbles of the exterior shell and the bubbles of the interior shell are placed such that a bubble of the exterior shell is placed opposite a bubble of the interior shell.
7. The shock-absorbing helmet according to claim 5 wherein the bubbles of the exterior shell and the bubbles of the interior shell are placed such that a bubble of the exterior shell faces a space between bubbles of the interior shell.
8. The shock-absorbing helmet according to claim 5 wherein the bubbles have a sphere type shape.
9. The shock-absorbing helmet according to claim 5 wherein the bubbles have an ellipsoid type shape.
10. The shock-absorbing helmet according to claim 5 wherein the bubbles have an elongated shape.
11. The shock-absorbing helmet according to claim 4 wherein the surface of the exterior shell and the surface of the interior shell each comprise ridges extending therefrom.
12. The shock-absorbing helmet according to claim 1 wherein the exterior shell and the interior shell is made of a substantially stiff material.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA3097730 | 2020-11-02 | ||
| CA3097730A CA3097730A1 (en) | 2020-11-02 | 2020-11-02 | Shock-absorbing headgear for athletic and other uses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA3136924A1 true CA3136924A1 (en) | 2022-05-02 |
Family
ID=81381369
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA3097730A Pending CA3097730A1 (en) | 2020-11-02 | 2020-11-02 | Shock-absorbing headgear for athletic and other uses |
| CA3136924A Pending CA3136924A1 (en) | 2020-11-02 | 2021-11-02 | Shock-absorbing helmet |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA3097730A Pending CA3097730A1 (en) | 2020-11-02 | 2020-11-02 | Shock-absorbing headgear for athletic and other uses |
Country Status (1)
| Country | Link |
|---|---|
| CA (2) | CA3097730A1 (en) |
-
2020
- 2020-11-02 CA CA3097730A patent/CA3097730A1/en active Pending
-
2021
- 2021-11-02 CA CA3136924A patent/CA3136924A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CA3097730A1 (en) | 2022-05-02 |
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| EEER | Examination request |
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