Tyre tread

• US 20040231774A1
• Filed: 05/19/2004
• Published: 11/25/2004
• Est. Priority Date: 05/23/2003
• Status: Active Grant

• Current Assignee: Lloyd Townsend
• Original Assignee: Lloyd Townsend
• Inventors: Townsend, Lloyd
• Granted Patent: US 7,114,539 B2
• Time in Patent Office: Days
• US Class Current: 152/209.11
• CPC Class Codes: B60C 11/0306 Patterns comprising block rows or discontinuous ribs
• CPC Class Codes: B60C 11/11 in which the raised area of the pattern consists only of isolated elements, e.g. blocks B60C11/12, B60C11/13 take precedence
• CPC Class Codes: B60C 2200/14 for off-road use

Abstract

A tire 10 for a bicycle is described having a tread that comprises transverse channels defining a block tread pattern for improving grip when the tire is used in off-road conditions. Two axially spaced circumferentially continuous parallel ribs 14 straddle the tire centreline and project radially beyond the block tread pattern to improve ride quality on a smooth road surface.

Claims

1. A tyre for a bicycle having a tread that comprises transverse channels defining a block tread pattern for improving grip when the tyre is used in off-road conditions, wherein two axially spaced circumferentially continuous parallel ribs are provided which straddle the tyre centreline and project radially beyond the block tread pattern to improve ride quality on a smooth road surface.

2. A tyre as claimed in claim 1, wherein the tread pattern additionally defines transversely extending lands that interconnect the two radially projecting ribs at circumferentially spaced intervals.

3. A tyre as claimed in claim 2, wherein the lands have a radial height less than that of the blocks of the block tread pattern.

4. A tyre as claimed in claim 1, the blocks of the block tread pattern are contiguous so as to be mutually supporting.

5. A tyre as claimed in claim 1, wherein the two ribs have a width of 4 mm and are arranged 6 mm apart.