SHAKER WEDGE

• US 20080078705A1
• Filed: 09/24/2007
• Published: 04/03/2008
• Est. Priority Date: 09/29/2006
• Status: Abandoned Application

• Current Assignee: M-I LLC (Schlumberger NV)
• Original Assignee: M-I LLC (Schlumberger NV)
• Inventors: Tagher, Marc, Carr, Brian S.
• Application Number:
  US11/860,466
• Publication Number:
  US 20080078705A1
• Time in Patent Office: Days
• US Class Current: 209/403
• CPC Class Codes: B07B 1/46 Constructional details of screens in general; Cleaning or heating of screens
• CPC Class Codes: B07B 1/4618 Manufacturing of screening surfaces
• CPC Class Codes: B07B 2201/02 Fastening means for fastening screens to their frames which do not stretch or sag the screening surfaces

Abstract

A wedging apparatus including an outer polygonal surface configured to secure a screen to a shaker, the outer polygonal surface having a bottom surface, a top surface opposite the bottom surface, and at least one end surface joining the top surface and the bottom surface, and an inner core defined by the outer polygonal surface, wherein the inner core defines a cavity is disclosed. A method of forming an apparatus for securing a screen to a shaker is disclosed, the method including forming a mold of a wedging apparatus configured to secure a screen to a shaker, wherein a shape of the mod is an inverse of an outer polygonal surface having a bottom surface, a top surface opposite the bottom surface, and at least one end surface joining the top surface and the bottom surface, and an inner core defined by the outer polygonal surface, wherein the inner core defines a cavity, injecting a liquid resin into the mold, allowing the liquid resin to solidify, and removing the wedging apparatus from the mold.

Claims

1. A wedging apparatus comprising:

an outer polygonal surface configured to secure a screen to a shaker, the outer polygonal surface comprising a bottom surface, a top surface opposite the bottom surface, and at least one end surface joining the top surface and the bottom surface; and

an inner core defined by the outer polygonal surface,

wherein the inner core defines a cavity.

2. The wedging apparatus of claim 1, wherein the outer polygonal surface comprises a polyurethane or polypropolene.

3. The wedging apparatus of claim 1, wherein the inner core comprises polyurethane or polypropolene.

4. The wedging apparatus of claim 1, wherein the cavity of the inner core is filled with a foam.

5. The wedging apparatus of claim 1, wherein the inner core comprises a plurality of ribs.

6. The apparatus of claim 5, wherein the inner core further comprises a foam disposed between the plurality of ribs.

7. The wedging apparatus of claim 1, wherein the outer polygonal surface further comprises a first side and a second side, wherein the first side joins a first edge of the top surface and a first edge of the bottom surface, and the second side joins a second edge of the top surface and a second edge of the bottom surface.

8. The wedging apparatus of claim 7, wherein the inner core is substantially enclosed.

9. The wedging apparatus of claim 7, wherein the inner core comprises a plurality of ribs.

10. The wedging apparatus of claim 9, wherein the plurality of ribs extends into the inner core a selected distance from the first side.

11. The wedging apparatus of claim 9, wherein the plurality of ribs extends into the inner core a selected distances from the second side.

12. The wedging apparatus of claim 1, wherein the outer polygonal surface and the inner core of the wedging apparatus are formed by injection molding.

13. The wedging apparatus of claim 1, wherein the inner core is substantially enclosed by the outer polygonal surface.

14. A method of forming an apparatus for securing a screen to a shaker, the method comprising:

forming a mold of a wedging apparatus configured to secure a screen to a shaker, wherein a shape of the mold is an inverse of an outer polygonal surface comprising a bottom surface, a top surface opposite the bottom surface, and at least one end surface joining the top surface and the bottom surface, and an inner core defined by the outer polygonal surface, wherein the inner core defines a cavity;

injecting a liquid resin into the mold;

allowing the liquid resin to solidify; and

removing the wedging apparatus from the mold.

15. The method of claim 14, further comprising introducing a gas into the liquid resin in the mold.

16. The method of claim 14, wherein the liquid resin comprises polyurethane or polypropolene.

17. The method of claim 14, wherein the inner core comprises a plurality of ribs.

18. The method of claim 14, wherein the outer polygonal surface further comprises a first side and a second side, wherein the first side joins a first edge of the top surface and a first edge of the bottom surface, and the second side joins a second edge of the top surface and a second edge of the bottom surface.

20. The method of claim 14, further comprising filling the cavity defined by the inner core with a gas.

19. The method of 14, further comprising filling the cavity defined by the inner core with a foam.