초록 ▼

A tank venting apparatus or a fill-limit and tank ventilation valve is disclosed for use with a fuel tank. The valve has a housing which contains a first valve assembly, second valve assembly, third valve assembly and fourth valve assembly. The first valve assembly primarily communicates with the fu

A tank venting apparatus or a fill-limit and tank ventilation valve is disclosed for use with a fuel tank. The valve has a housing which contains a first valve assembly, second valve assembly, third valve assembly and fourth valve assembly. The first valve assembly primarily communicates with the fuel tank. The fourth valve assembly communicates with a vapor recover canister and a filler neck to the tank. The first valve assembly also communicates with the third valve assembly and the second valve assembly. The second valve assembly generally communicates with the first valve assembly and the third valve assembly. The third valve assembly communicates with the first valve assembly, second valve assembly and fourth valve assembly. The third valve assembly prevents passage of liquid fuel from the tank to the canister. The fourth valve assembly manages flow from the valve.

대표청구항 ▼

A tank venting apparatus or a fill-limit and tank ventilation valve is disclosed for use with a fuel tank. The valve has a housing which contains a first valve assembly, second valve assembly, third valve assembly and fourth valve assembly. The first valve assembly primarily communicates with the fu

A tank venting apparatus or a fill-limit and tank ventilation valve is disclosed for use with a fuel tank. The valve has a housing which contains a first valve assembly, second valve assembly, third valve assembly and fourth valve assembly. The first valve assembly primarily communicates with the fuel tank. The fourth valve assembly communicates with a vapor recover canister and a filler neck to the tank. The first valve assembly also communicates with the third valve assembly and the second valve assembly. The second valve assembly generally communicates with the first valve assembly and the third valve assembly. The third valve assembly communicates with the first valve assembly, second valve assembly and fourth valve assembly. The third valve assembly prevents passage of liquid fuel from the tank to the canister. The fourth valve assembly manages flow from the valve. 3eRf3,wherein, Rs3is a spacer group, e is 1 or 0, and Rf3is a fluorous group. 13. The method of claim 1 further comprising the step of separating the fluorous tagged compound from at least one other compound. 14. The method of claim 13 where the separation is accomplished by a fluorous separation technique. a reference probe, wherein said comprising of the dissociation curve to the reference dissociation curve comprises determining the value of a metric representing the difference between the dissociation curve and the reference dissociation curve. 10. The method of claim 9 wherein the metric is determined by subtracting the integral of the dissociation curve from the integral of the reference dissociation curve. 11. The method of claim 9 wherein the dissociation curve is provided by a method comprising: (a) contacting the first polynucleotide sample to one or more molecules of the given probe under conditions which allow polynucleotide molecules in the first polynucleotide sample to hybridize to the given probe, and (b) measuring polynucleotide molecules hybridized to the one or more molecules of the given probe over a time period wherein a detectable fraction of the polynucleotide molecules dissociates from the one or more molecules of the given probe. 12. The method of claim 11 wherein in the polynucleotide molecules in the first polynucleotide sample each have the same number of mismatches to the given probe. 13. The method of claim 11 wherein the first polynucleotide sample comprises a plurality of sets of polynucleotides, and wherein each set of polynucleotides consists of polynucleotide molecules having the same number of mismatches to the given probe, and the number of mismatches to the given probe is different for each set of polynucleotides. 14. The method of claim 13 wherein each set of polynucleotides contains polynucleotide molecules that are differentially labeled from polynucleotide molecules in the other sets. 15. The method of claim 13 wherein said step of measuring polynucleotide molecules hybridized to the given probe comprises measuring the polynucleotide molecules of a particular set of polynucleotides in said plurality of sets of polynucleotides hybridized to the given probe. 16. The method of claim 11 wherein the polynucleotide molecules are detectably labeled with a detectable label. 17. The method of claim 11 wherein the step of measuring the polynucleotide molecules hybridized to the one or more molecules of the given probe comprises: (i) repeatedly washing the first polynucleotide sample under conditions such that some fraction of the polynucleotide molecules dissociates from the one or more molecules of the given probe; and (ii) measuring the polynucleotide molecules that remain hybridized to the one or more molecules of the given probe after each washing. 18. The method of claim 9 wherein the reference dissociation curve is provided by a method comprising: (a) contacting the second polynucleotide sample to one or more molecules of the reference probe under conditions which allow polynucleotide molecules in the second polynucleotide sample to hybridize to the reference probe; and (b) measuring polynucleotide molecules hybridized to the one or more molecules of the reference probe over a time period wherein a detectable fraction of the polynucleotide molecules dissociates from the one or more molecules of the reference probe. 19. The method of claim 18 wherein the polynucleotide molecules are detectably labeled with a detectable label. 20. The method of claim 18 wherein the reference probe is identical to the given probe and wherein the first sample is different from the second sample. 21. The method of claim 18 wherein the reference probe has a binding energy for a perfect match duplex that is similar or identical to the binding energy of the given probe for a perfect match duplex. 22. The method of claim 18 wherein the polynucleotide molecules in the second polynucleotide sample each have the same number of mismatches to the reference probe. 23. The method of claim 18 wherein the second polynucleotide sample comprises a plurality of sets of polynucleotides, and wherein each set of polynucleotides consists of polynucleotide molecules having the same number of mismatches t