Abstract A fluidic gauging sensor head for monitoring a characteristic of a continuously moving strand-like material. The sensor head is comprised of a support block having an open channel bounded by converging side walls extending from a top surface thereof and lengthwise of said support block, and means for admitting pressurized fluid to the channel to sense variations in the back pressure therefrom, which variations are proportional to changes in the characteristic of the material being monitored as the strand-like material passes through the open channel. The strandlike material can be a monofilament material, and the channel can have a V-shaped cross-section. The channel can extend lengthwise in a convex arc so as to cause the continuously moving monofilament material to press against the side walls bounding the channel, and thereby insure that the flow of the fluid through an enclosed gauging area is large compared to any leakage of fluid passing through the interface formed between the monofilament material and the side walls of the channel.
Inventors
👤 Hansjoerg Stern
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-04 23:36
CPC Classifications
G; G01; G01B; G01B13/00; G01B13/08
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
166 words
A fluidic gauging sensor head for monitoring a characteristic of a continuously moving strand-like monofilament material comprising: a. a support block having an open channel bounded by converging side walls extending from a surface and lengthwise of said support block; b. means for admitting pressurized fluid to said channel to sense variations in the back pressure therefrom proportional to changes in the characteristic of the material being monitored as the strand-like material passes through said open channel; and c. means for establishing a substantially leak-proof seal between the monofilament material and said converging side walls bounding said channel to define an enclosed gauging area, said means for establishing a substantially leak-proof seal comprising said channel extending lengthwise in a convex arc, whereby the continuously moving monofilament material presses against said side walls bounding said channel to insure that the flow of the fluid through said gauging area is large compared to any leakage passing through the interface formed between the monofilament material and said side walls.
Claim 2
Dependent Claim
166 words
A fluidic gauging sensor head for monitoring a characteristic of a continuously moving strand-like monofilament material comprising: a. a support block having an open channel bounded by converging side walls extending from a surface and lengthwise of said support block; b. means for admitting pressurized fluid to said channel to sense variations in the back pressure therefrom proportional to changes in the characteristic of the material being monitored as the strand-like material passes through said open channel; and c. means for establishing a substantially leak-proof seal between the monofilament material and said converging side walls bounding said channel to define an enclosed gauging area, said means for establishing a substantially leak-proof seal comprising said channel extending lengthwise in a convex arc, whereby the continuously moving monofilament material presses against said side walls bounding said channel to insure that the flow of the fluid through said gauging area is large compared to any leakage passing through the interface formed between the monofilament material and said side walls.
Claim 3
Dependent Claim
131 words
A fluidic gauging sensor head according to claim 1, wherein the cross sectional area of said channel is V-shaped, and said enclosed gauging area varies in proportion to changes in the cross sectional area of the monofilament material passing through said channel, whereby when the flow of the fluid passing through said gauging area is orifice flow, the change in back pressure of the fluid from said channel is proportional to the reciprocal of the variation of the cross sectional area of the monofilament material, and when the flow of the fluid passing through said gauging area is capillary flow, the change in back pressure of the fluid from said channel is proportional to the reciprocal of the square of the variation in the cross sectional area of the monofilament material.