Lifter bar with attachment point for hoisting

Patent metadata

Field	Value
Publication number	US-9533309-B2
Application number	US-201113994231-A
Country	US
Kind code	B2
Filing date	Dec 14, 2011
Priority date	Dec 14, 2010
Publication date	Jan 3, 2017
Grant date	Jan 3, 2017

Abstract

A lifter bar includes at least one attachment formation for use in lifting the lifter bar; wherein the at least one attachment formation is embedded in the lifter bar. A method of producing the lifter bar and tools for use in handling the lifter bar are also described.

First claim

The invention claimed is:

1. A lifter bar including:
a body having a centre of gravity;
at least one attachment formation for use in lifting the lifter bar;
wherein the at least one attachment formation is embedded at least partially in a portion of the body of the lifter bar, and;
wherein the at least one attachment formation includes a shank portion that is at least partially embedded in the body, and an enlarged head portion having a bottom portion positioned adjacent the shank portion, and operable to engage an apparatus for use in lifting the lifter bar at the bottom portion of the enlarged head portion.

2. A lifter bar according to claim 1 , wherein at least one attachment formation of the lifter bar includes at least a first attachment formation and a second attachment formation, and wherein the first attachment formation is positioned on one side of the centre of gravity of the lifter bar, and the second attachment formation is positioned on an opposide side of the centre of gravity of the lifter bar.

3. A lifter bar according to claim 1 , wherein the at least one attachment formation is provided at a point along a length of the lifter bar that coincides with the centre of gravity of the lifter bar.

4. A lifter bar according to claim 1 , wherein the enlarged head portion extends radially beyond the shank portion substantially about the entire circumference of the shank portion.

5. A lifter bar according to claim 1 , wherein the at least one attachment formation further includes at least one anchor portion adjacent the shank portion.

6. A lifter bar according to claim 5 , wherein the anchor portion includes a generally planar portion that lies in a plane substantially orthogonal to the axis of the shank portion.

7. A lifter bar according to claim 1 , wherein the at least one attachment formation is disposed on a trailing face of the lifter bar.

8. A method for producing a lifter bar, the method comprising:
preparing a mould for forming the lifter bar;
introducing an elastomeric material into the mould;
introducing at least one attachment formation into the mould, wherein the at least one attachment formation includes a shank portion and an enlarged head portion having a bottom portion positioned adjacent the shank portion and operable to engage an apparatus for use in lifting the lifter bar at the bottom portion of the enlarged head portion; and
curing the elastomeric material to form the lifter bar.

9. A method according to claim 8 , further comprising:
providing an opening in the mould to receive a portion of the attachment formation to locate the attachment formation in a desired position during production of the lifter bar.

10. A method according to claim 9 , wherein the attachment formation includes a sealing portion that cooperates with the opening in the mould to inhibit the ingress of elastomeric material into the opening during production of the lifter bar.

11. A method according to claim 10 , wherein the attachment formation includes a locating lug that cooperates with the opening to retain the sealing portion of the attachment formation in cooperation with the opening during production of the lifter bar.

Assignees

• Watt Daniel
• Lessing Evert
• Weir Minerals Australia Ltd

Inventors

• Watt Daniel
• Lessing Evert

Classifications

• B66C1/22

  Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks · CPC title

• B02C17/225 Primary

  using rubber or elastomeric material · CPC title

• B02C17/1825 Primary

  Lifting devices (lifting devices associated with the lining for containers B02C17/22) · CPC title

• Y10T29/49826

  Assembling or joining · CPC title

• B29C43/18

  incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles {(B29C43/206 takes precedence)} · CPC title