Hockey stick with nanofiber reinforcement

Patent metadata

Field	Value
Publication number	US-11013969-B2
Application number	US-201916576867-A
Country	US
Kind code	B2
Filing date	Sep 20, 2019
Priority date	Sep 21, 2018
Publication date	May 25, 2021
Grant date	May 25, 2021

Abstract

A construct for a hockey stick formed from layers of fiber tape and a reinforcing nanofiber material. The nanofiber is integrated into the molded hockey stick to increase the strength and toughness of inter-laminar bonds between the fiber tape. The nanofiber may include carbon nanotubes.

First claim

We claim:

1. A hockey stick structure, comprising:
a blade, molded from a first composite material, the first composite material further comprising:
a first fiber layer having first fibers extending in a first direction;
a second fiber layer having second fibers extending in a second direction, non-parallel to the first direction;

a shaft coupled to the blade, the shaft molded from a second composite material, the second composite material further comprising:
a third fiber layer having third fibers extending in a third direction;
a fourth fiber layer having fourth fibers extending in a fourth direction, non-parallel to the third direction; and
a bridge layer extending around a corner of the shaft and positioned between a portion of the third fiber layer and the fourth fiber layer, wherein the bridge layer has fifth fibers extending in a normal direction to the third and fourth fibers, wherein the bridge layer has channels extending between at least two clusters of the fifth fibers,

wherein the third fiber layer, and fourth fiber layer, and the bridge layer are molded to one another by an epoxy resin.

2. The hockey stick structure of claim 1 , the shaft further comprising:
a plurality of additional fiber layers and a plurality of additional bridge layers, wherein the plurality of additional bridge layers are positioned between at least 5% of the additional fiber layers.

3. The hockey stick structure of claim 1 , wherein the fifth fibers of the bridge layer are coated onto the portion of the third fiber layer and the fourth fiber layer.

4. The hockey stick structure of claim 1 , wherein the fifth fibers of the bridge layer are entrained within resin of the third fiber layer and the fourth fiber layer.

5. The hockey stick structure of claim 4 , wherein a resin content of the third fiber layer and the fourth fiber layer are comparatively lower than a fiber layer that is not adjacent to the fifth fibers.

6. The hockey stick structure of claim 1 , wherein the fifth fibers comprise carbon nanotubes.

7. The hockey stick structure of claim 6 , wherein the carbon nanotubes measure between 2 and 25 microns in length.

8. The hockey stick structure of claim 1 , wherein the first, second, third and fourth fibers are carbon fibers.

9. The hockey stick structure of claim 1 , wherein the first, second, third and fourth fibers are glass fibers.

10. The hockey stick structure of claim 1 , wherein the third direction is approximately perpendicular to the fourth direction.

Assignees

• Bauer Hockey Ltd
• Bauer Hockey Llc

Inventors

• Chambert Martin
• Rouzier Edouard
• Caron Kardos Jean-Frédérik
• Ducharme Mathieu

Classifications

• B29C70/30 Primary

  Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core · CPC title

• A63B59/70 Primary

  with bent or angled lower parts for hitting a ball on the ground, on an ice-covered surface, or in the air, e.g. for hockey or hurling · CPC title

• A63B2102/22

  {Field} hockey · CPC title

• A63B2102/24

  Ice hockey · CPC title

• B29K2309/08

  Glass · CPC title