Microfluidic control surfaces using ordered nanotube fabrics
US-10661304-B2 · May 26, 2020 · US
Negative Poisson's ratio materials for winter sports equipment
US12102182B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12102182-B2 |
| Application number | US-202217581428-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 21, 2022 |
| Priority date | Jan 21, 2022 |
| Publication date | Oct 1, 2024 |
| Grant date | Oct 1, 2024 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A ski includes an elongated ski body having a bottom layer defining a bottom surface of the ski, a top layer defining a top surface of the ski, and a middle layer disposed between the bottom layer and the top layer, in which the middle layer includes a negative Poisson's ratio (NPR) foam material having a Poisson's ratio of between 0 and −1.
First claim
Opening claim text (preview).
What is claimed is: 1. A ski comprising: an elongated ski body having a bottom layer defining a bottom surface of the ski, a top layer defining a top surface of the ski, and a middle layer disposed between the bottom layer and the top layer, in which the middle layer comprises a negative Poisson's ratio (NPR) foam material having a Poisson's ratio of between 0 and −1; and in which the ski body comprises edges disposed along a length of the ski body on each side of the ski body, in which each edge comprises an NPR metal foam material. 2. The ski of claim 1 , in which the NPR foam material comprises an NPR polymer foam or an NPR metal foam. 3. The ski of claim 2 , in which the NPR foam material comprises polytetrafluoroethylene (PTFE) or expanded polytetrafluoroethylene (e-PTFE). 4. The ski of claim 2 , in which the NPR polymer foam comprises an NPR thermoplastic polymer foam, an NPR viscoelastic foam, or an NPR rubber foam. 5. The ski of claim 1 , in which the NPR foam material has a Poisson's ratio of between 0 and −0.8. 6. The ski of claim 1 , in which the NPR foam material is composed of a cellular structure having a characteristic dimension of between 0.1 μm and 3 mm. 7. The ski of claim 1 , in which the middle layer of the ski body comprises a composite material comprising the NPR foam material and a positive Poisson's ratio (PPR) material. 8. The ski of claim 1 , comprising a binding disposed on the top surface of the ski body and attached to the ski body, in which the binding comprises an NPR foam material. 9. The ski of claim 8 , in which the binding comprises a composite material comprising the NPR foam material and a positive Poisson's ratio material.
Assignees
Inventors
Classifications
using parts which are fixed on the shoe, e.g. means to facilitate step-in · CPC title
power driven · CPC title
Yieldable or self-releasing in the event of an accident, i.e. safety bindings · CPC title
Snow mobiles characterised by the skis · CPC title
- A63C9/086Primary
using parts which are fixed on the shoe of the user and are releasable from the ski binding · CPC title
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Frequently asked questions
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- What does patent US12102182B2 cover?
- A ski includes an elongated ski body having a bottom layer defining a bottom surface of the ski, a top layer defining a top surface of the ski, and a middle layer disposed between the bottom layer and the top layer, in which the middle layer includes a negative Poisson's ratio (NPR) foam material having a Poisson's ratio of between 0 and −1.
- Who is the assignee on this patent?
- Park Joon Bu
- What technology area does this patent fall under?
- Primary CPC classification A63C9/086. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Oct 01 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).