초록 ▼

The invention relates to a float (5) for a fill level sensor, comprised of a fuel-resistant plastic (7), an expanding means (8) and/or filler (9), whereby the expanding means consists of gas-filled plastic balls (11) that are provided in the form of microspheres (8), and the filler consists of micro

The invention relates to a float (5) for a fill level sensor, comprised of a fuel-resistant plastic (7), an expanding means (8) and/or filler (9), whereby the expanding means consists of gas-filled plastic balls (11) that are provided in the form of microspheres (8), and the filler consists of micro-hollow balls (9). The microspheres (8) and the micro-hollow balls (9) are surrounded by fuel-resistant plastic (7).

대표청구항 ▼

The invention claimed is: 1. A float for a fill level sensor, comprising: a fuel-resistant plastic; and an expanding means; wherein the expanding means are gas-filled plastic balls as microspheres, a proportion of microspheres in the float being between 70% and 87%; and wherein the fuel-resistant p

The invention claimed is: 1. A float for a fill level sensor, comprising: a fuel-resistant plastic; and an expanding means; wherein the expanding means are gas-filled plastic balls as microspheres, a proportion of microspheres in the float being between 70% and 87%; and wherein the fuel-resistant plastic surrounds the microspheres. 2. The float as claimed in claim 1, wherein the microspheres have an average sphere diameter of from 30 μm to 40 μm. 3. The float as claimed in claim 2, wherein the microspheres have an average sphere diameter of from 34 μm to 38 μm. 4. The float as claimed in claim 1, wherein the float has a density of less than 0.37 g/cm3. 5. A float with a fill level sensor, comprising: a fuel-resistant plastic; and a filler; wherein the filler comprises micro hollow balls; a proportion of the micro hollow balls in the float being between 3% and 98%; and wherein the fuel-resistant plastic surrounds the micro hollow balls. 6. The float as claimed in claim 5, wherein the micro hollow balls consist of glass. 7. The float as claimed in claim 5, wherein the micro hollow balls have an apparent density of from 0.09 g/cm3 to 0.1 g/cm3. 8. The float as claimed in claim 5, wherein the proportion of the micro hollow balls is over 70%. 9. The float as claimed in claim 5, wherein the float has a density of less than 0.5 g/cm3. 10. A float for a fill level sensor, comprising: a fuel-resistant plastic; an expanding agent; and a filler; wherein the expanding agent comprises gas-filled plastic balls as microspheres, wherein the filler comprises micro hollow balls; and wherein the fuel-resistant plastic surrounds the microspheres and the micro hollow balls. 11. The float as claimed in claim 10, wherein the microspheres account for a proportion of the float of from 20% to 87%. 12. The float as claimed in claim 10, wherein the micro hollow balls account for a proportion of the float of from 1.5% to 60%. 13. The float as claimed in claim 10, wherein the float contains fuel-resistant plastic in a proportion of from 5% to 14%. 14. The float as claimed in claim 10, wherein the float has a density of from 0.5 g/cm3 to 0.1 g/cm3. 15. The float as claimed in claim 10, wherein the fuel-resistant plastic is polyoxymethylene, polyamide, polyphenylene sulfide, polyaryletherketone, polybutylene terephthalate, high-density polyethylene, polyethylene terephthalate or polyphthalamide. 16. The float as claimed in claim 10, wherein the fuel-resistant plastic is a phenolic resin or an epoxy resin. 17. The float as claimed in claim 10, wherein the float has a receptacle for a lever wire. 18. The float as claimed in claim 17, wherein the receptacle is a bore in the float.