Devices and methods for a vertical float system. A float guide, located in a tank containing a fluid, has first and second sections with a first diameter and a third section between the first and second section. The third section has a smaller, second diameter. A float is slidably attached to the fl
Devices and methods for a vertical float system. A float guide, located in a tank containing a fluid, has first and second sections with a first diameter and a third section between the first and second section. The third section has a smaller, second diameter. A float is slidably attached to the float guide in the third section. The system includes a switch and a level sensor located in the first section or the second section. The switch becomes activated when the float contacts the level sensor. One of an inner face of the float and the third section of the float guide has projections arranged in a contiguous pattern around the one of the inner face of the float and the third section of said float guide. The projections are shaped to establish point contacts between the float and the float guide in the third section.
대표청구항▼
1. A device, comprising: a float guide comprising: a first section having a first diameter;a second section having said first diameter; anda third section between said first section and said second section, said third section being cylindrical and having a second diameter, said second diameter being
1. A device, comprising: a float guide comprising: a first section having a first diameter;a second section having said first diameter; anda third section between said first section and said second section, said third section being cylindrical and having a second diameter, said second diameter being smaller than said first diameter;a float slidably attached to said float guide in said third section such that said float surrounds said float guide only in said third section, said float comprising an inner diameter and an outer diameter, said outer diameter being larger than said inner diameter, said inner diameter being larger than said second diameter and smaller than said first diameter, an inner face of said float comprising radially inwardly extending projections arranged in a contiguous pattern around said inner face, said projections being shaped to establish point contacts between said float and said float guide in said third section;a switch; anda level sensor located in said first section or said second section, said switch being activated when said float contacts said level sensor. 2. The device according to claim 1, said float guide being located inside a liquid container. 3. The device according to claim 1, said float comprising a disk having an annular or toroidal shape. 4. The device according to claim 1, said projections comprising triangular vertices that are pointed at their distal ends. 5. The device according to claim 4, said projections being triangular shaped in transverse cross section, vertices of said projections engaging said float guide in said third section at a point. 6. The device according to claim 4, said projections comprising pyramids, cones, or bumps. 7. The device according to claim 1, further comprising a cleaning device operatively connected to said float guide, said cleaning device periodically cleaning said float guide. 8. The device according to claim 7, said cleaning device comprising an ultrasonic device or a high-speed vibrating solenoid. 9. A device, comprising: a float guide comprising: a first section having a first diameter;a second section having said first diameter; anda third section between said first section and said second section, said third section having a second diameter, said second diameter being smaller than said first diameter;a float slidably attached to said float guide in said third section such that said float surrounds said float guide only in said third section, said float comprising an outer diameter and a circular inner diameter, said outer diameter being larger than said inner diameter, said inner diameter being larger than said second diameter and smaller than said first diameter, said third section of said float guide comprising radially outwardly extending projections arranged in a contiguous pattern around said third section, said projections being shaped to establish point contacts with an inner face of said float in said third section;a switch; anda level sensor located in said first section or said second section, said switch being activated when said float contacts said level sensor. 10. The device according to claim 9, said float guide being located inside a liquid container. 11. The device according to claim 9, said float comprising a disk having an annular or toroidal shape. 12. The device according to claim 9, said projections comprising triangular vertices that are pointed at their distal ends. 13. The device according to claim 12, said projections being triangular shaped in transverse cross section, vertices of said projections engaging said float at a point. 14. The device according to claim 9, further comprising a cleaning device operatively connected to said float guide, said cleaning device periodically cleaning said float guide. 15. The device according to claim 14, said cleaning device comprising an ultrasonic device or a high-speed vibrating solenoid. 16. A vertical float system, comprising: a float guide located in a tank containing a fluid, said float guide comprising: a first section having a first diameter;a second section having said first diameter; anda third section between said first section and said second section, said third section having a second diameter, said second diameter being smaller than said first diameter, said float guide being attached to a wall within said tank;a float slidably attached to said float guide in said third section such that said float surrounds said float guide only in said third section, said float comprising a material sized and configured to float on said fluid;a switch; anda level sensor located in said first section or said second section,said switch becoming activated when said float contacts said level sensor,said float comprising an inner diameter and an outer diameter, said outer diameter being larger than said inner diameter, said inner diameter being larger than said second diameter and smaller than said first diameter, andone of an inner face of said float and said third section of said float guide comprising projections arranged in a contiguous pattern around said one of said inner face of said float and said third section of said float guide, said projections being shaped to establish point contacts between said float and said float guide in said third section. 17. The vertical float system according to claim 16, said float comprising a disk having an annular or toroidal shape. 18. The vertical float system according to claim 16, said projections comprising triangular vertices that are pointed at their distal ends. 19. The vertical float system according to claim 18, said projections being triangular shaped in transverse cross section, vertices of said projections engaging said one of said inner face of said float and said third section of said float guide at a point. 20. The vertical float system according to claim 16, further comprising a cleaning device operatively connected to said float guide, said cleaning device comprising an ultrasonic device or a high-speed vibrating solenoid periodically vibrating said float guide.
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