Composite sprocket

• US 20030195072A1
• Filed: 03/31/2003
• Published: 10/16/2003
• Est. Priority Date: 04/16/2002
• Status: Abandoned Application

• Current Assignee: John D. Redmond
• Original Assignee: John D. Redmond
• Inventors: Redmond, John D.
• Application Number:
  US10/404,181
• Publication Number:
  US 20030195072A1
• Time in Patent Office: Days
• US Class Current: 474/161
• CPC Class Codes: F16H 55/30 Chain-wheels

Abstract

A composite sprocket. The sprocket comprises an outer ring mounted to an inner hub. The outer ring has a profile, for example, a toothed profile. The toothed ring comprises a thermoset material such as polyurethane. The hub comprises any suitable metallic or non-metallic material sufficient for transmitting a torque from the ring to a shaft.

Claims

1. A sprocket comprising:

a hub; and

a substantially circular member engaged with the hub; and

the circular member having a profile.

2. The sprocket as in claim 1, wherein the circular member comprises a metallic material.

3. The sprocket as in claim 1, wherein the circular member comprises a non-metallic material.

4. The sprocket as in claim 3 wherein circular member further comprises a shoulder about a circumference.

5. The sprocket as in claim 3, wherein a radius of the circular member is less than a radius of the hub.

6. The sprocket as in claim 4, wherein the hub further comprises a first shoulder having a radius greater than a circular member radius.

7. The sprocket as in claim 6 further comprising:

a surface on the first shoulder for facilitating a circular member installation.

8. The sprocket as in claim 6, wherein the hub further comprises a second shoulder disposed opposite the first shoulder such that the circular member is contained between the first shoulder and the second shoulder.

9. The sprocket as in claim 7, wherein the surface describes a bevel.

10. The sprocket as in claim 8 wherein the non-metallic material comprises polyurethane.

11. The sprocket as in claim 10 having a toothed profile on the circular member.

12. A sprocket comprising:

a hub;

a substantially circular member engaged with the hub, the circular member having a profile;

the hub comprising a first shoulder having a radius greater than a circular member radius;

the hub comprising a second shoulder disposed opposite the first shoulder such that the circular member is contained between the first shoulder and the second shoulder; and

the circular member comprises polyurethane.

13. The sprocket as in claim 12 wherein the circular member comprises a profile.

14. The sprocket as in claim 13, wherein the profile comprises grooves and teeth.

15. The sprocket as in claim 12, wherein the circular member has a shrink fit on the hub.

16. The sprocket as in claim 12 attached to a motorcycle wheel.