Reinforcing member

• US 6,779,950 B1
• Filed: 03/10/2003
• Issued: 08/24/2004
• Est. Priority Date: 03/10/2003
• Status: Active Grant

• Current Assignee: Quantax Pty., Ltd.
• Original Assignee: Quantax Pty., Ltd.
• Inventors: Hutchins, Warwick Bernard
• Primary Examiner(s): Shackelford, Heather
• Assistant Examiner(s): Saldano, Lisa M.
• Application Number:
  US10/383,881
• Time in Patent Office: 533 Days
• Field of Search: 405/259.1, 405/259.5, 405/259.6, 405/302.2, 572/12, 572/13, 572/15, 572/17, 572/19, 572/23, 572/30, 572/32, 572/21
• US Class Current: 405/259.1
• CPC Class Codes: D07B 1/0693 having a strand configuration
• CPC Class Codes: D07B 2201/2002 characterised by their cross-sectional shape
• CPC Class Codes: D07B 2201/2007 characterised by their longitudinal shape
• CPC Class Codes: D07B 2501/2023 Concrete enforcements
• CPC Class Codes: D07B 5/005 characterised by their outer shape or surface properties
• CPC Class Codes: E21D 21/0026 characterised by constructional features of the bolts
• CPC Class Codes: E21D 21/0066 Anchoring-bolts formed by a bundle of radially arranged rigid elements

Abstract

A reinforcing member such as a cable bolt is formed of a multiplicity of helically stranded wires wound around a straight core or king wire. At least the outer wires are formed with a plurality of spaced helical ribs extending along the entire length thereof.

Claims

1. A cable bolt comprising:

a core wire or tube having a length; and

a plurality of wires helically wound around the length of the core wire or tube, at least some of said wires being outer wires being ribbed wires having spaced helical surface ribs,

wherein the ribs have dimensions such that the rib of one ribbed wire fits between the ribs of an adjacent ribbed wire at many points along the length of the core wire or tube, and the ribs of adjacent ribbed wires bear on each other at other points along the length to define a space between the wires.

2. A cable bolt as defined in claim 1, wherein said ribs extend along the ribbed wires for their entire length.

3. A cable bolt as defined in claim 2, wherein all said outer wires have said ribs.

4. A cable bolt as defined in claim 3, comprising six outer wires helically wound around said core wire or tube, all of said outer wires being formed with said helical ribs.

5. A cable bolt as defined in claim 4, wherein the outer wires have four separate spaced said helical ribs extending therealong.

6. A cable bolt as defined in claim 5, wherein said ribs each have a width equal to about 20% of nominal wire diameter and a height of about 8% of nominal wire diameter.

7. A cable bolt as defined in claim 6, wherein each helical rib has a pitch which is between four and ten times the nominal wire diameter.

8. A cable bolt as defined in claim 7, wherein said core wire is identical to said outer wires.

9. A cable bolt as defined in claim 7, comprising six outer wires helically wound around a central straight tube.