Unitary skate assembly having vertical spring means

• US 4,993,725 A
• Filed: 04/11/1990
• Issued: 02/19/1991
• Est. Priority Date: 04/11/1990
• Status: Expired due to Fees

• Current Assignee: University of Colorado Foundation Inc (University of Colorado)
• Original Assignee: University of Colorado Foundation Inc (University of Colorado)
• Inventors: Barnes, Frank S., Baer, Norman W.
• Primary Examiner(s): Marmor, Charles A.
• Assistant Examiner(s): CAMBY, RICHARD M
• Application Number:
  US07/508,329
• Time in Patent Office: 314 Days
• Field of Search: 280/11.14, 280/11.12, 280/11.18, 280/11.15, 280/600, 280/9, 280/10
• US Class Current: 280/11.14
• CPC Class Codes: A63C 1/24 Elastic plates
• CPC Class Codes: A63C 1/42 Manufacture of skates

Abstract

A single blade ice skate is disclosed wherein the ice engaging blade, the toe boot plate and the heel boot plate are formed as a unitary assembly from a flat sheet of metal stock material, with the two boot plates being attached to the blade by way of twisted metal extension portions. In the initial flat state, the blade portion, the two extension portions and the two boot plates occupy a common physical plane. The two extension portions that connect the boot plates to the blade are then twisted 90° in this common plane, and in a manner to place the two boot plates in planes that are normal to the plane of the blade and normal to the common plane of the initial metal stock material. The two boot plates are then bent into a U-shape, so as to provide a U-shaped vertical spring member for each of the boot plates, the spring member acting between the two boot plates and the blade (i.e. a spring member operating in the vertical plane of the blade), while at the same time providing a rigid lateral connection between the plane of the two boot plates and the plane of the blade, thereby rigidly maintaining these planes as normal planes during a skating maneuver.

Claims

1. A blade/boot plate assembly arranged for attachment to a skate boot, comprising a unitary metal member having;

an elongated generally horizontal blade occupying a first plane,

at least one boot plate means having a first generally horizontal portion thereof located above said blade and occupying a second plane that extends normal to said first plane, and said boot plate means including a second generally horizontal portion thereof that is located generally below said first portion and is connected to said first portion through a U-shaped bend that extends generally parallel to said second plane and normal to said first plane, and

a vertically twisted metal portion connecting said second portion of said boot plate means to said blade.

2. The blade/boot plate assembly of claim 1 wherein said second portion of said boot plate means is located generally vertically below and generally parallel to said first portion of said boot plate means.

3. The blade/boot plate assembly of claim 2 wherein said first portion of said boot plate means includes means for attaching said first portion to a skate boot.

4. The blade/boot plate assembly of claim 3 wherein said first portion of said boot plate means includes means for attaching said first portion to a toe portion of a skate boot, and including

second boot plate means having a first generally horizontal portion thereof located above said blade and occupying a second plane that extends normal to said first plane, said second boot plate means including a second generally horizontal portion thereof that is located generally below said first portion and is connected to said first portion through a U-shaped bend that extends generally parallel to said second plane and normal to said first plane, and said second portion of said boot plate means including means for attaching said second first portion to a heel portion of a skate boot.

5. The blade/boot plate assembly of claim 1 including a generally vertically extending wall member between said first and second boot plate portions, said wall member being movable in a horizontal direction to control the spring rate of said U-shaped bend.

6. The blade/boot plate assembly of claim 5 wherein said wall member is formed of an elastomer.

7. The blade/boot plate assembly of claim 6 wherein said second portion of said boot plate means is located generally vertically below and generally parallel to said first portion of said boot plate means.

8. The blade/boot plate assembly of claim 7 wherein said first portion of said boot plate means includes means for attaching said first portion to a skate boot.

9. The blade/boot plate assembly of claim 8 wherein said first portion of said boot plate means includes means for attaching said first portion to a toe portion of a skate boot, and including

second boot plate means having a first generally horizontal portion thereof located above said blade and occupying a second plane that extends normal to said first plane, said second boot plate means including a second generally horizontal portion thereof that is located generally below said first portion and is connected to said first portion through a U-shaped bend that extends generally parallel to said second plane and normal to said first plane, and said second portion of said boot plate means including means for attaching said second first portion to a heel portion of a skate boot.

10. The blade/boot plate assembly of claim 9 wherein said wall member is crushable under a predetermined vertical force.

11. The blade/boot plate assembly of claim 1 wherein the thickness of said twisted metal portion is reduced to thereby control the spring rate of said U-shaped bend.

12. The blade/boot plate assembly of claim 11 wherein said second portion of said boot plate means is located generally vertically below and generally parallel to said first portion of said boot plate means.

13. The blade/boot plate assembly of claim 12 wherein said first portion of said boot plate means includes means for attaching said first portion to a skate boot.

14. The blade/boot plate assembly of claim 13 wherein said first portion of said boot plate means includes means for attaching said first portion to a toe portion of a skate boot, and including

second boot plate means having a first generally horizontal portion thereof located above said blade and occupying a second plane that extends normal to said first plane, said second boot plate means including a second generally horizontal portion thereof that is located generally below said first portion and is connected to said first portion through a U-shaped bend that extends generally parallel to said second plane and normal to said first plane, and said second portion of said boot plate means including means for attaching said second first portion to a heel portion of a skate boot.

15. The blade/boot plate assembly of claim 1 including means associated with said U-shaped bend to control the spring rate of said U-shaped bend.

16. The blade/boot plate assembly of claim 15 wherein said spring rate control means comprises a generally vertically extending wall member between said first and second boot plate portions, said wall member being movable in a horizontal direction to control the spring rate of said U-shaped bend.

17. The blade/boot plate assembly of claim 16 wherein said spring rate control means comprises a roller member extending between said first and second boot plate portions, said roller having a gear tooth ring encircling the roller, one of said first and second boot plate portions having a mating area of elongated gear teeth, and the other of said first and second boot plate portions having a mating area providing clearance for said gear teeth ring, and means for locking said roller in an adjusted horizontal position relative to said first and second boot plate portions.

18. A method for producing a unitary blade/boot plate assembly from a unitary metal member, comprising the steps of;

providing a flat, sheet-like metal member occupying an X-Y plane,

shaping said metal member to form

(1) an elongated blade portion that extends generally in an X direction within said X-Y plane,

(2) at least one boot plate means located in a Y direction within said X-Y plane and above said blade portion, said boot plate means including an upper and a lower portion that join at a first bend line that extends in an X direction within said X-Y plane, and

(3) a web portion connecting the lower portion of said boot plate means to said blade portion and extending in a Y direction within said X-Y plane, said web portion joining said lower portion of said boot plate means at a second bend line that is generally parallel to said first bend line and extends in an X direction within said X-Y plane,

twisting said web portion about an axis that extends in a Y direction within said X-Y plane, so as to cause said first and second bend lines to extend in a Z direction within a Y-Z plane that is perpendicular to said X-Y plane,

forming a bend of about ninety degrees at said second bend line, and

forming a U-shaped bend of about one hundred eighty degrees at said first bend line,

to thereby place said upper and lower portions of said boot plate means one above the other, with said lower portion being adjacent to said blade.

19. The method of claim 18 wherein said first portion of said boot plate means includes means for attaching said first portion to a skate boot.

20. The method of claim 19 including the step of providing a wall member extending between said first and second boot plate portions, said wall member being movable in an X direction within said X-Y plane to thereby control the spring rate of said U-shaped bend.

21. The method of claim 20 wherein said wall member is yieldable under a predetermined vertical force.

22. The method of claim 19 including the steps of providing a roller member extending between said first and second boot plate portions, said roller member being movable in an X direction within said X-Y plane to thereby control the spring rate of said U-shaped bend, and providing means to lock said roller member in position to which it is moved.

23. The method of claim 18 including the step of reducing the thickness of said one hundred eighty degree bend portion to thereby control the spring rate of said U-shaped bend.

24. The method of claim 18 wherein said step of shaping said metal member forms a first boot plate located above said blade portion for attachment to the toe portion of a skate boot, and forms a second boot plate located above said blade portion for attachment to the heel portion of a skate boot.

25. The method of claim 18 including the step of coating said elongated blade portion with a wear resistant material.

26. The method of claim 18 wherein prior to the production of a unitary blade/boot plate assembly in accordance with the steps of said method, one or more test models are fabricated by operation of a pre-method, the pre-method comprising the steps of,

providing a first flat, sheet-like metal member and shaping said first metal member to form an elongated blade portion,

providing a second flat, sheet-like metal member and shaping said second metal member to form a boot plate means including an upper generally horizontal portion and a lower generally horizontal portion that join at a first bend line, and having a web portion connected to the lower horizontal portion of said boot plate means and extending downward therefrom, said web portion terminating in a blade-receiving slot, and

mounting the slot of said web portion onto said blade portion by the use of a welding attachment means or the like.

27. A blade/boot plate assembly arranged for attachment to a skate boot, comprising;

a unitary metal member having a boot plate portion that extends in a generally horizontal direction, said boot plate portion being integrally connected to a second generally horizontal portion by way of a generally 180°

, U-shaped spring bend, said second portion then underlying said boot plate portion, and a generally vertically extending web portion integrally connected to said second portion of said unitary metal member by way of a generally 90°

bend, said web portion then extending in a generally vertical downward direction and underlying said second portion of said unitary metal member, and said web portion terminating in an lower end portion,

a U-shaped generally vertical slot formed formed in said lower end portion, and having a generally horizontal width equal to a given thickness,

an elongated generally horizontally extending blade located in said U-shaped slot and having a generally vertical thickness about equal to said given thickness, and

weld means cooperating with said blade and said web portion to thereby attach said unitary metal member to said blade.

28. The blade/boot plate assembly of claim 27 including means to control the spring rate of said U-shaped spring bend.

29. The blade/boot plate assembly of claim 27 wherein the thickness of said U-shaped spring bend is selectively reduced, to thereby control the spring rate of said U-shaped spring bend.

30. The blade/boot plate assembly of claim 27 including a generally vertically extending wall member between said boot plate portion and said second portion of said unitary metal member, said wall member being movable in a horizontal direction to control the spring rate of said U-shaped spring bend.

31. The blade/boot plate assembly of claim 27 including

a second unitary metal member having a boot plate portion that extends in a generally horizontal direction, said boot plate portion being integrally connected to a second generally horizontal portion by way of a generally 180°

, U-shaped spring bend, said second portion then underlying said boot plate portion, and a generally vertically extending web portion integrally connected to said second portion of said unitary metal member by way of a generally 90°

bend, said web portion then extending in a generally vertical downward direction and underlying said second portion of said unitary metal member, and said web portion terminating in an lower end portion,

U-shaped generally vertical slot formed formed in said lower end portion, and having a generally horizontal width equal to a given thickness, and

second weld means cooperating with said blade and said web portion to thereby attach said second unitary metal member to said blade.

32. The blade/boot plate assembly of claim 31 including means to control the spring rate of the U-shaped spring bend of said unitary metal member and of said second unitary metal member.

33. The blade/boot plate assembly of claim 31 wherein the thickness of the U-shaped spring bend of said unitary metal member and of said second unitary metal member are both selectively reduced, to thereby control the spring rate of said two U-shaped spring bends.

34. The blade/boot plate assembly of claim 31 including a generally vertically extending wall member between the boot plate portion and the second portion of said unitary metal member and said second unitary metal member, said wall members being individually movable in a horizontal direction, to thereby individually control the spring rate of the U-shaped spring bends formed in said unitary metal member and said second unitary metal member.