AU2004100315A4 - Steel Sheet Lifting Device - Google Patents
Steel Sheet Lifting Device Download PDFInfo
- Publication number
- AU2004100315A4 AU2004100315A4 AU2004100315A AU2004100315A AU2004100315A4 AU 2004100315 A4 AU2004100315 A4 AU 2004100315A4 AU 2004100315 A AU2004100315 A AU 2004100315A AU 2004100315 A AU2004100315 A AU 2004100315A AU 2004100315 A4 AU2004100315 A4 AU 2004100315A4
- Authority
- AU
- Australia
- Prior art keywords
- steel sheet
- lifting
- magnetic devices
- devices
- multiples
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Landscapes
- Load-Engaging Elements For Cranes (AREA)
Description
Description The innovation embodies a means to lift and carry steel sheets of below 8mm.
thickness but could be used on thicker steel if required.
Magnetic devices employing many shallow, high-gradient North-South fields along their length are prior art and are used for manually gripping and dragging single steel sheets. It is known that steel sheet can be removed from such devices by curving the sheet so that it peels away from the magnetic device.
The present innovation provides means for using multiples of such devices on a frame to lift steel sheets and means to exert pressure on the sheet to cause it to peel off at the discretion of the user.
A typical embodiment of the innovation will employ a frame of any suitable material of a size that approximates the standard steel sheet sizes, for example 2400 mm by 1200 mm. To the underside of this frame is affixed numbers of magnetic devices that employ the shallow high-gradient multiple field principle for selecting and retaining a single sheet from a stack or other surface. The number of such devices employed will be calculated to provide adequate safety factor for the weight of sheet to be lifted. The frame will be provided with means for lowering and lifting by crane or fork-lift or other suitable methods.
Further, the frame is provided with means to impart downward pressure on the lifted steel sheet such that it curves and peels away from the faces of the magnetic devices for removal. This means may typically be a series of cams, levers, springs or other devices to exert suitable downward pressure at a point on the sheet so that it is caused to peel from the magnetic devices. Typically these peeling or stripping devices will be operated together by means of linked levers.
Also typically a fail-safe device will prevent operation of the stripping device during lifting.
COMS ID No: SMBI-00754330 Received by IP Australia: Time 15:07 Date 2004-05-18
Claims (4)
1. A lifting and retaining device for steel sheet having multiples of shallow field multiple pole magnetic devices as the lifting means.
2. A lifting device for steel sheet having multiples of shallow field multiple pole magnetic devices as the lifting and retaining means and employing mechanical or pneumatic means to begin to strip or peel the retained steel sheet from the magnetic devices.
3. A lifting device for steel sheet having multiples of shallow field multiple pole magnetic devices as the lifting and retaining means and employing cams or offset devices to begin to strip or peel the retained steel sheet from the magnetic devices.
4. A lifting device for steel sheet having multiples of shallow field multiple pole magnetic devices as the lifting and retaining means and employing springs to begin to strip or peel the retained steel sheet from the magnetic devices. A lifting device for steel sheet having multiples of shallow field multiple pole magnetic devices as the lifting and retaining means and having the devices to begin to strip or peel the retained steel sheet from the magnetic devices linked together for common manual or automatic operation. COMS ID No: SMBI-00754330 Received by IP Australia: Time 15:07 Date 2004-05-18
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2004100315A AU2004100315A4 (en) | 2004-04-30 | 2004-04-30 | Steel Sheet Lifting Device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2004100315A AU2004100315A4 (en) | 2004-04-30 | 2004-04-30 | Steel Sheet Lifting Device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2004100315A4 true AU2004100315A4 (en) | 2004-06-03 |
Family
ID=34280553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2004100315A Ceased AU2004100315A4 (en) | 2004-04-30 | 2004-04-30 | Steel Sheet Lifting Device |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU2004100315A4 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005117520A2 (en) * | 2004-06-04 | 2005-12-15 | Ian Godfrey Heard | Apparatus for the lifting of ferromagnetic metal sheets |
-
2004
- 2004-04-30 AU AU2004100315A patent/AU2004100315A4/en not_active Ceased
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005117520A2 (en) * | 2004-06-04 | 2005-12-15 | Ian Godfrey Heard | Apparatus for the lifting of ferromagnetic metal sheets |
| WO2005117520A3 (en) * | 2004-06-04 | 2006-09-08 | Ian Godfrey Heard | Apparatus for the lifting of ferromagnetic metal sheets |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGI | Letters patent sealed or granted (innovation patent) | ||
| MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |