초록 ▼

An open flow fluid filter has a pleated main filter element having a plurality of pleats in a closed loop having an outer perimeter defined by a plurality of outer pleat tips, and an inner perimeter defined by a plurality of inner pleat tips. The loop has a hollow interior extending along an axis. F

An open flow fluid filter has a pleated main filter element having a plurality of pleats in a closed loop having an outer perimeter defined by a plurality of outer pleat tips, and an inner perimeter defined by a plurality of inner pleat tips. The loop has a hollow interior extending along an axis. Fluid to be filtered flows through the main filter element from an upstream dirty side to a downstream clean side, and flows axially in the hollow interior. The main filter element has an axial flow passage extending along the axis and circumscribing the hollow interior and has a flow perimeter greater than the inner perimeter. A safety filter element downstream of the main filter element filters both the axial flow in the hollow interior and additional flow between the flow perimeter and the inner perimeter. A filter with additional flow is also provided.

대표청구항 ▼

An open flow fluid filter has a pleated main filter element having a plurality of pleats in a closed loop having an outer perimeter defined by a plurality of outer pleat tips, and an inner perimeter defined by a plurality of inner pleat tips. The loop has a hollow interior extending along an axis. F

An open flow fluid filter has a pleated main filter element having a plurality of pleats in a closed loop having an outer perimeter defined by a plurality of outer pleat tips, and an inner perimeter defined by a plurality of inner pleat tips. The loop has a hollow interior extending along an axis. Fluid to be filtered flows through the main filter element from an upstream dirty side to a downstream clean side, and flows axially in the hollow interior. The main filter element has an axial flow passage extending along the axis and circumscribing the hollow interior and has a flow perimeter greater than the inner perimeter. A safety filter element downstream of the main filter element filters both the axial flow in the hollow interior and additional flow between the flow perimeter and the inner perimeter. A filter with additional flow is also provided. which dye (B2), RB1is methoxyethyl, ethoxyethyl, methoxymethyl, or ethoxymethyl, and wherein the weight ratio of component (A):component (B) is 10:90 to 30:70. 2. A dye mixture according to claim 1, wherein the ratio is 6:33. 3. A dye mixture according to claim 1, wherein the ratio, by weight, of dye (B1):(B2) is from 45:55 to 48:52. 4. A composition comprising a dye mixture according to claim 1 and at least one dispersing agent, surfactant or wetting agent. 5. A process for coloring a synthetic textile material or fiber blend thereof, which comprises applying thereto a dye mixture according to claim 1. 6. A process for coloring a synthetic textile material or fiber blend thereof, which comprises applying thereto a dye mixture according to claim 4, dispersed in an aqueous medium. 7. A process according to claim 5, wherein the synthetic textile material or fiber blend thereof is a polyester or polyester-cellulose or polyester-wool blend.