AU7142100A - A screen panel - Google Patents

Description

AUSTRALIA

PATENTS ACT 1990 COMPLETE SPECIFICATION FOR A STANDARD PATENT (Original) APPLICATION NO:

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RELATED ART: a a NAME OF APPLICANT: ACTUAL INVENTOR(S): ADDRESS FOR SERVICE: INVENTION TITLE: DAVID MOSS CORPORATION PTY LTD JOHN KEITH DAVID-MOSS; AND ANTHONY GORDON EVANS LORD COMPANY Patent Trade Mark Attorneys 4 Douro Place West Perth, Western Australia, 6005

AUSTRALIA.

"A SCREEN PANEL" DETAILS OF ASSOCIATED PROVISIONAL APPLICATION NO'S: PQ3975 FILED NOVEMBER 12, 1999 The following Statement is a full description of this invention including the best method of performing it known to me/us: The present invention relates to a screen panel.

In accordance with one aspect of the present invention there is providing a screen panel comprising an upper portion provided with a screening means and having opposed sides, and a respective elongated attachment member depending from each side, wherein each attachment member is formed at least partially along its length with a barbed profile such that the attachment member is engageable with a side of a recess of complementary shape in a support frame member.

The screen panel of the present invention is particularly envisaged for use in mineral processing where it is desirable to separate out material of differing particle sizes.

S* The present invention will now be described, by way of example, with reference to the accompanying drawings, in which:- Figure 1 is a partial transverse cross sectional view of two neighbouring screen panels 15 in accordance with the present invention and an associated frame member; Figure 2 is an upper perspective view of a screen panel in accordance with the present invention and associated frame members; Figure 3 is a lower perspective view of a screen panel in accordance with the present invention; Figure 4 is an upper perspective view of an array of screen panels in accordance with the present invention; Figure 5 is a view similar to Figure 1 of a further embodiment of the present invention; and Figure 6 is a perspective cross sectional view of a yet further embodiment of the present invention.

3 In Figures 1 to 4 of the drawings, there is shown a screen apparatus 10 for use in mineral processing where it is desired to separate out materials of differing particle sizes.

The screen apparatus 10 includes screen panels 12 in accordance with the present invention. The screen panels 12 each have a generally flat upper portion 14 which is provided with screening means -15 of any suitable type for separating out materials of differing particle sizes in known manner.

Each upper portion 14 has opposed sides 16. A respective attachment member 18 depends from each upper portion 14 adjacent each opposed side 16 thereof. Each 10 attachment member 18 extends along the full length or part of the length of the corresponding side 16. As shown, an outer side portion 20 of each attachment member 18 is flush with the corresponding side 16 and is flat.

An inner portion 22 of each attachment member 18 is formed with a barbed profile and has a plurality of inwardly extending barb members 24 which are generally oriented upwardly such that upper surfaces 25 thereof extend upwardly away from the eeeee corresponding attachment member 18 as seen in Figure 1. The barb members 24 extend for the full length or part of the length of the attachment member 18 to which te e they are attached.

Further, there are provided deflector members 26 which also depend downwardly from each upper portion 14 and are each located inwardly of a respective attachment member 18. Still further, as shown each deflector member 26 is sloped inwardly at an acute angle to the corresponding upper portion 14.

The screen panel 12 is typically formed of resilient plastics or rubber material such as by moulding. In this case the barb members 24 are resilient.

4 Further, the screen panels 12 are arranged to be mounted on a framework 30 forming part of the apparatus 10 as shown in Figure 1, 2 and 4. The framework 30 includes a plurality of parallel frame members 32 each formed with a respective recess 34 extending longitudinally of the member 32.

As shown, each recess 34 has opposed sides 36 formed with inwardly extending barb members 38 which are of complementary shape to the barb members 24 of the screen panel 12. Typically, the members 32 of the framework 30 are formed of resilient plastics or rubber materials such as by moulding.

As shown in Figure 1 it is intended that adjacent screen panels 12 be engaged with the recesses 34 by means of the attachment members 18. Firstly, a first screen panel 12 is engaged with a recess 34 so that the barb members 24 engage with the barb members 38 with the outer side portion 20 facing the opposite side of the recess 34. Then, a :°oooo further screen panel 12 is inserted in the recess 34 with the outer side portion contiguous with the outer side portion 20 of the first screen panel 12. As this further screen panel 12 enters the recess 34 the barb members 24 engage progressively with oooo* the barb members 38. When the barb members 24 are resilient they are able to deform to pass over the outermost portions of the barb members 38 as the screen panel 12 is .oo, :inserted into the recess 34. The same applies when the barb members 38 are resilient so that they are able to deform as the screen panel 12 is inserted into the recess 34.

Further, as shown the deflector members 26 rest against respective outer surfaces of the parallel members 32 when the attachment members 18 are fully inserted into the recess 34.

In use, the screen panelsl2 are used to separate out materials including particles of differing sizes. However, this separation process wears away the material of the screen panel 12 and the screen panel 12 has to be replaced eventually. This may be done simply by lifting an inserted screen panel 12 from the members 32. When the barb members 24 are resilient they deform to enable them to pass over the barb members 38 upon removal and vice versa when the barb members 38 are resilient.

The removed screen panel 12 may be replaced by a new screen panel 12. Preferably, both the barb members 24 and the barb members 38 are resilient so that both sets of barbs are able to deform as screen panels 12 are inserted and removed.

The deflector members 26 protect the members 32 from abrasion by particulate material passing through the screening means 10 In Figure 5, there is shown a further embodiment of the present invention which is similar to the embodiment of Figures 1 to 4 and like reference numerals denote like parts.

In Figure 5 there is shown a screen apparatus 50 in which the attachment members 18 each have a single barb member 24 on each inner portion 22. Similarly, the opposed sides of the recess 36 each have a single inwardly extending barb member 38 of complementary shape to a corresponding barb member 24.

Further, the opposed sides 16 of the upper portions 14 are formed adjacent their upper ends as seen in Figure 5, with opposed recesses 52. As seen the opposed recesses 52 have an entrance portion which is relatively narrow. This enables a locking insert 54 having a longitudinally extending tongue 56 of complementary shape to the opposed recesses 52 to be engaged with the screen panels 12 to assist in securing them in place. The locking insert 54 can be of any convenient shape. The shape of the tongue 56 may vary as long as it is of complementary shape to the opposed recesses 52 and an upper surface may be flat as shown in Figure 5 or it may be formed in an inverted 6 V-shape or any other convenient shape. Typically, this locking insert will have ends which are secured by any convenient means.

In Figure 6, there is shown a yet further embodiment of the present invention which is similar to the embodiment of Figures 1 to 4 and like reference numerals denote like parts. Also, this embodiment shares some features with the embodiment of Figure and like reference numerals denote like parts.

In Figure 6 there is shown a screen apparatus 60 in which the attachment members 18 each have a plurality of barb members 24 as in Figures 1 to 4 but the opposed sides 16 are formed with recesses 52 and have a locking insert 54 with a tongue 56 engaged S: 10 with the recesses 52 as in Figure However, in this case the locking insert 54 has an upper surface with an inverted V Sshape as shown.

The embodiments of Figures 5 and 6 are used in much the same way as the embodiment of Figures 1 to 4.

Modifications and variations such as would be apparent to a skilled addressee are deemed to be within the scope of the present invention.

Claims (11)

1. A screen panel comprising an upper portion provided with a screening means and having opposed sides, and a respective elongated attachment member depending from each side, wherein each attachment member is formed at least partially along its length with a barbed profile such that the attachment member is engageable with a side of a recess of complementary shape in a support frame member.

2. A screen panel according to Claim 1, wherein each attachment member extends along the full length of the corresponding side.

3. A screen panel according to Claim 2, wherein an outer side portion of each *Ode*: :attachment member is flush with the corresponding side of the upper portion.

4. A screen panel according to any one of the preceding claims, wherein the dbarbed profile comprises one or more inwardly extending barb members.

A screen panel according to Claim 4, wherein the barbed profile comprises a ••plurality of inwardly extending barb members.

6. A screen panel according to Claim 4 or 5, wherein the barb members are resilient.

7. A screen panel according to any one of the preceding claims, wherein the barb ooe• members have upper surfaces which extend upwardly away from the corresponding attachment member to which they are attached.

8. A screen panel according to any one of the preceding claims, wherein there are provided one or more deflector members which extend downwardly from the upper portion and are located inwardly of a respective attachment member, each deflector member being arranged to protect the supporting frame member in use.

9. A screen panel according to any one of the preceding claims, wherein each opposed side of the upper portion is formed with a recess arranged to cooperate with a similar recess in an adjacent upper portion so that a tongue of complementary shape of a locking insert is engageable with the cooperating recesses.

A screen panel substantially as hereinbefore described with reference to Figures 1 to 4 or Figure 5 and Figure 6 of the accompanying drawings.

11. A screen apparatus comprising a plurality of parallel spaced support frame members each having a longitudinally extending recess containing a pair of opposed attachment members of screen panels according to any one of the preceding claims, S• the recesses having sides of complementary shape to the barbed profile of the 'i attachment members and opposite sides of the screen panels being disposed in •••oo juxtaposed relationship. DATED THIS 7 TH DAY OF NOVEMBER 2000 S"DAVID MOSS CORPORATION PTY LTD By their Patent Attorneys "LORD COMPANY PERTH, WESTERN AUSTRALIA