Skate with injected boot form
View Patent ↗A boot form for a hockey skate is made of multiple plastic materials having different hardness properties, or different flexural moduli, and is formed via an injection-molding process or another similar process. One or more of the plastic materials may be reinforced with fibers of glass, carbon, aramid, or another stiffening material to strengthen one or more regions of the boot form. For example, pellets of a first plastic material having a flexural modulus of approximately 190 MPa (e.g., a polyamide elastomer block amide) may be injected into a mold to form a softer upper region of the boot form. And pellets of a second plastic having a flexural modulus of approximately 20,000 MPa (e.g., a Nylon 12 with long glass fibers) may be injected into the mold to form a stiffer lower region of the boot form. Additional skate components may then be attached to the boot form.
1. A hockey skate, comprising:
a boot form including a lower portion and an upper portion molded to the lower portion, a flexibility of material of the upper portion being greater than a flexibility of material of the lower portion such that the upper portion is less rigid than the lower portion, the material of the lower portion being a composite and the material of the upper portion being a composite; and
a skate quarter attached to the upper portion of the boot form.
2. The hockey skate of claim 1 further comprising a flexible tab molded to a rear region of the boot form, and a tendon guard attached to the flexible tab.
3. The hockey skate of claim 1 wherein the material of the lower portion of the boot form is reinforced with fibers selected from the group consisting of carbon, glass, and aramid fibers.
4. The hockey skate of claim 1 further comprising a flexible tab molded to a rear region of the boot form.
5. The hockey skate of claim 1 further comprising a blade holder attached to a bottom region of the lower portion of the boot form.
6. The hockey skate of claim 1 , wherein the material of the lower portion has a first flexural modulus and the material of the upper portion has a second flexural modulus, the second flexural modulus being different from the first flexural modulus.
7. The hockey skate of claim 6 , wherein the second flexural modulus is less than the first flexural modulus.
8. The hockey skate of claim 7 wherein the first flexural modulus is approximately 4200 MPa, and the second flexural modulus is approximately 2100 MPa.
9. The hockey skate of claim 7 wherein the first flexural modulus is approximately 20,000 MPa, and the second flexural modulus is approximately 190 MPa.
10. The hockey skate of claim 1 , wherein the lower portion of the boot form comprises an integral toe region.
11. The hockey skate of claim 10 further comprising a flexible tab molded to the integral toe region of the lower portion of the boot form, and a tongue attached to the flexible tab.
12. The hockey skate of claim 1 , wherein a composition of the material of the upper portion is different from a composition of the material of the lower portion.
13. A hockey skate, comprising:
a boot form including a lower portion and an upper portion molded to the lower portion, the lower portion comprising a first material and the upper portion comprising a second material, the first material having a flexural modulus greater than a flexural modulus of the second material, the first material being a composite and the second material being a composite; and
a skate quarter attached to the upper portion of the boot form.
14. The hockey skate of claim 13 further comprising a flexible tab molded to a rear region of the boot form, and a tendon guard attached to the flexible tab.
15. The hockey skate of claim 13 wherein the lower portion of the boot form includes an integral toe region.
16. The hockey skate of claim 15 further comprising a flexible tab molded to the toe region, and a tongue attached to the flexible tab.
17. The hockey skate of claim 13 wherein the first material is reinforced with fibers selected from the group consisting of carbon, glass, and aramid fibers.
18. The hockey skate of claim 13 further comprising a flexible tab molded to a rear region of the boot form.
19. The hockey skate of claim 13 further comprising a blade holder attached to a bottom region of the lower portion of the boot form.