Claims
- 1. A process of making a tubular membrane from a multiplicity of fine metallic fibers, comprising:
suspending the multiplicity of fine metallic fibers within a liquid binder; depositing the fine metallic fibers onto a porous substrate by applying a pressure, thereby forcing the liquid binder through the porous substrate; heating the deposited fine metallic fibers to form a flexible membrane; winding the flexible membrane to form a tubular membrane winding; and sintering the membrane winding to form the tubular membrane.
- 2. A process of making a tubular membrane as set forth in claim 1, wherein the fine metallic fibers comprise fibers formed by a metallic wire drawing process.
- 3. A process of making a tubular membrane as set forth in claim 1, wherein the act of depositing the fine metallic fibers comprises applying a mechanical pressure.
- 4. A process of making a tubular membrane as set forth in claim 3, wherein the a mechanical pressure is applied with a piston.
- 5. A process of making a tubular membrane as set forth in claim 1, wherein the porous substrate comprises fibers that are larger than the fine metallic fibers.
- 6. A process of making a tubular membrane as set forth in claim 1, further including removing the deposited fine metallic fibers from the substrate.
- 7. A process of making a tubular membrane as set forth in claim 1, wherein the fine metallic fibers are sintered to the substrate.
- 8. A process of making a tubular membrane as set forth in claim 1, wherein the deposited fine metallic fibers are heated for a time sufficient for adhering the fine metallic fibers to adjacent fine metallic fibers to form the flexible membrane.
- 9. A process of making a tubular membrane as set forth in claim 1, further comprising rolling the flexible membrane.
- 10. A process of making a tubular membrane as set forth in claim 9, wherein the flexible membrane is wound about a mandrill to provide multiple overlying layers of the flexible membrane.
- 11. A process of making a tubular membrane as set forth in claim 1, wherein the fine metallic fibers have a catalytic property.
- 12. A process of making a tubular membrane as set forth in claim 1, wherein the act of sintering the membrane winding comprises sintering the membrane winding for a time sufficient for forming a substantially rigid tubular membrane.
- 13. A process of making a tubular membrane as set forth in claim 1, further comprising dispersing an active substance into the flexible membrane.
- 14. A process of making a membrane from a multiplicity of fine metallic fibers, comprising:
suspending the multiplicity of fine metallic fibers within a liquid binder; pouring the fine metallic fibers with the liquid binder onto a porous substrate located within a pressure vessel; applying a pressure to the liquid binder for forcing the liquid binder through the porous substrate, thereby depositing the fine metallic fibers onto the porous substrate; drying the deposited fine metallic fibers and the porous substrate; heating the deposited fine metallic fibers for a time sufficient for adhering the fine metallic fibers to adjacent fine metallic fibers to form a flexible membrane; winding the flexible membrane to form a tubular membrane with multiple overlying layers of the flexible membrane to form membrane winding; and sintering the membrane winding for forming a substantially rigid tubular membrane.
- 15. A process of making a tubular membrane as set forth in claim 14, wherein the liquid binder comprises a curable binder.
- 16. A process of making a tubular membrane as set forth in claim 14, wherein the act of applying a pressure to the liquid binder comprises applying a gas pressure to the liquid binder.
- 17. A process of making a tubular membrane as set forth in claim 14, wherein the act of applying a pressure to the liquid binder includes applying a mechanical pressure to the liquid binder.
- 18. A process of making a tubular membrane as set forth in claim 17, wherein the mechanical pressure is applied with a hydraulically operated piston.
- 19. A process of making a tubular membrane as set forth in claim 14, further comprising dispersing a catalytically active substance into the flexible membrane.
- 20. A process of making a tubular membrane as set forth in claim 14, wherein the act of drying the deposited fine metallic fibers and the porous substrate includes drying the liquid binder.
- 21. A process of making a tubular membrane as set forth in claim 14, wherein the multiplicity of fine metallic fibers comprises fine metallic fibers having catalytic properties.
- 22. A process of making a tubular membrane as set forth in claim 14, wherein the act of winding the flexible membrane includes winding the flexible membrane about a tubular axis for providing multiple overlying layers of the flexible membrane for forming the membrane winding.
- 23. A process of making a tubular membrane as set forth in claim 14, wherein the act of winding the flexible membrane includes winding the flexible membrane in multiple overlying layers.
- 24. A process of making a tubular membrane as set forth in claim 14, wherein the act of sintering the tubular membrane comprises sintering the membrane winding for a time sufficient for forming a substantially rigid tubular membrane.
- 25. A process of making a membrane from a multiplicity of fine metallic fibers, comprising:
suspending the multiplicity of fine metallic fibers within a liquid binder, wherein said fine metallic fibers have catalytic properties. pouring the fine metallic fibers with the liquid binder onto a porous substrate located within a pressure vessel; applying a mechanical pressure to the liquid binder for forcing the liquid binder through the porous substrate thereby depositing the fine metallic fibers onto the porous substrate; drying the deposited fine metallic fibers and the porous substrate; heating the deposited fine metallic fibers for a time sufficient for adhering the fine metallic fibers to adjacent fine metallic fibers to form a flexible membrane; dispersing a catalytically active substance into the flexible membrane; winding the flexible membrane to form a tubular membrane with multiple overlying layers of the flexible membrane to form membrane winding; and sintering the membrane winding for forming a substantially rigid tubular membrane.
- 26. A process of making a tubular membrane as set forth in claim 25, wherein the multiplicity of fine metallic fibers comprises fine metallic fibers having a diameter between 0.001 and 100 microns within a curable liquid binder.
- 27. A process of making a tubular membrane as set forth in claim 25, wherein the act of applying a pressure to the liquid binder includes applying a mechanical pressure to the liquid binder with a hydraulically operated piston.
- 28. A tubular membrane formed from a multiplicity of fine metallic fibers, comprising:
a flexible sheet of membrane formed from a multiplicity of fine metallic fibers; said flexible sheet of membrane being wound in multiple overlying layers about a generally central axis to form a membrane winding; and sinter bonds of said membrane winding for bonding said multiple overlying layers to adjacent overlying layers of said flexible sheet of membrane for forming a substantially rigid tubular membrane.
- 29. A tubular membrane formed from a multiplicity of fine metallic fibers as set forth in claim 28, wherein said multiplicity of fine metallic fibers are fine metallic fiber.
- 30. A tubular membrane formed from a multiplicity of fine metallic fibers as set forth in claim 28, wherein said multiplicity of fine metallic fibers comprises fibers having a diameter between 0.1 and 100 microns.
- 31. A tubular membrane formed from a multiplicity of fine metallic fibers as set forth in claim 28, wherein said multiplicity of fine metallic fibers comprises fibers formed in a wire drawing process.
- 32. A tubular membrane formed from a multiplicity of fine metallic fibers as set forth in claim 28, further including a catalytically active material dispersed in the flexible sheet of membrane.
- 33. A tubular membrane formed from a multiplicity of fine metallic fibers as set forth in claim 28, wherein said fine metallic fibers comprise fibers having a catalytic property.
- 34. A tubular membrane formed from a multiplicity of fine metallic fibers as set forth in claim 28, wherein said flexible sheet of membrane is supported by a porous substrate.
- 35. A tubular membrane formed from a multiplicity of fine metallic fibers as set forth in claim 34, wherein said porous substrate is interleaved between said multiple overlying layers of said flexible sheet of membrane.
- 36. A tubular membrane formed from a multiplicity of fine metallic fibers as set forth in claim 35, wherein a catalytically active substance injected into said porous substrate with said sheet of membrane entrapping said active substance between said multiple overlying layers of said sheet of membrane.
- 37. A tubular membrane formed from a process comprising:
suspending a multiplicity of fine metallic fibers within a liquid binder; depositing the fine metallic fibers onto a porous substrate by applying a pressure thereby forcing the liquid binder through the porous substrate; heating the deposited fine metallic fibers to form a flexible membrane; winding the flexible membrane to form a membrane winding with multiple overlying layers of the flexible membrane; and sintering the membrane winding to form the tubular membrane.
Parent Case Info
[0001] The benefit under 35 U.S.C. §119(e) of U.S. provisional application entitled TUBULAR MEMBRANE AND METHOD, Serial No. 60/294,149, filed May 29, 2001, is hereby claimed and the disclosure thereof is hereby incorporated by reference in its entirety.
Provisional Applications (1)
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Number |
Date |
Country |
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60294149 |
May 2001 |
US |