Bicycle rim with brake track

Patent metadata

Field	Value
Publication number	US-10532610-B2
Application number	US-201414304646-A
Country	US
Kind code	B2
Filing date	Jun 13, 2014
Priority date	Jun 13, 2014
Publication date	Jan 14, 2020
Grant date	Jan 14, 2020

Abstract

A rim for a bicycle includes a radially outer tire-engaging portion, a radially inner spoke-engaging portion, a first sidewall and a second sidewall spaced apart from the first sidewall. A brake track is located on the first and second sidewalls including a plurality of grooves formed therein. Each of the plurality of grooves has a radially innermost point and a radially outermost point, wherein the radially outermost point is circumferentially aft of the radially innermost point relative to a forward circumferential travel direction of the rim.

First claim

The invention claimed is:

1. A rim for a bicycle, comprising:
a radially outer tire-engaging portion;
a radially inner spoke-engaging portion;
a first sidewall;
a second sidewall spaced apart from the first sidewall, the first sidewall and the second sidewall formed of a first material; and
a brake track formed of a second material, the second material different than the first material, and located on the first and second sidewalls, the second material of the brake track including a plurality of grooves formed therein, each of the plurality of grooves having a radially innermost point and a radially outermost point, wherein the radially outermost point is circumferentially aft of the radially innermost point relative to a forward circumferential travel direction of the rim.

2. The rim of claim 1 , wherein the rim includes FRP.

3. The rim of claim 1 , wherein the plurality of grooves is non-overlapping.

4. The rim of claim 1 , wherein each of the plurality of grooves is straight.

5. The rim of claim 1 , wherein each of the plurality of grooves is arcuate.

6. The rim of claim 1 , wherein the plurality of grooves is non-overlapping.

7. The rim of claim 1 , wherein the brake track has a radially outer boundary and a radially inner boundary.

8. The rim of claim 7 , wherein the radially outermost point of each of the plurality of grooves is adjacent to the outer boundary of the brake track.

9. The rim of claim 8 , wherein the radially outermost point of each of the plurality of grooves is at the outer boundary of the brake track.

10. The rim of claim 8 , wherein the radially innermost point of each of the plurality of grooves is adjacent to the inner boundary of the brake track.

11. The rim of claim 10 , wherein the radially outermost point of each of the plurality of grooves is at the outer boundary of the brake track.

12. The rim of claim 1 , wherein each of the plurality of grooves has an extent from the radially outermost point to the radially innermost point.

13. The rim of claim 12 , wherein the extent of each of the plurality of grooves is without an inflection point.

14. The rim of claim 12 , wherein the extent of each of the plurality of grooves is at least twice the length of a remaining portion of the groove.

15. The rim of claim 12 , wherein the extent of each of the plurality of grooves is about five times the length of a remaining portion of the groove.

16. The rim of claim 12 , wherein the extent of each of the plurality of grooves is generally inclined relative to the radial direction about 30-60 degrees.

17. The rim of claim 12 , wherein the extent of each of the plurality of grooves is generally inclined relative to the radial direction about 45 degrees.

18. The rim of claim 1 , wherein the each of the plurality of grooves is wider adjacent the radially outermost point than the radially innermost point.

19. The rim of claim 1 , wherein some or all of the plurality of grooves is continuous.

20. The rim of claim 1 , wherein some or all of the plurality of grooves is discontinuous.

21. The rim of claim 1 , wherein the plurality of grooves are spaced in the brake track at a density of about 3-10 per circumferential inch.

22. The rim of claim 1 , wherein each of the plurality of grooves are from about 0.01 inches to about 0.05 inches in depth.

23. The rim of claim 1 , wherein the plurality of grooves are in a repeating pattern.

24. The rim of claim 1 , wherein the pluralities of grooves are formed through a molding method.

25. The rim of claim 24 , wherein the plurality of grooves are formed through a molding of uncured material.

Assignees

• Poertner Josh
• Truemper Andrew
• Sram Llc

Inventors

• Poertner Josh
• Truemper Andrew

Classifications

• B60B2900/321

  Lifetime · CPC title

• B60B2310/228

  by machining · CPC title

• B60B2310/226

  by cutting · CPC title

• B60B2310/204

  by moulding, e.g. injection moulding, i.e. casting of plastics material · CPC title

• B60B21/025

  the transverse section being hollow · CPC title