US3908248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for texturizing filaments
Assignee: BASF SE
•
Filing: 1974-06-17
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Granted: 1975-09-30
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Expires: 1994-06-17
Abstract
Abstract Apparatus for the manufacture of texturized filaments of synthetic linear high molecular weight materials using hot fluids consisting of a closed first processing chamber having an inlet for the fluid, a filament inlet channel at one of said processing chamber, a filament guide channel projecting into the processing chamber from its other end, and a second duct-like processing chamber mounted at the free end of the filament guide channel and having radial slots extending in the longitudinal direction of the duct of said processing chamber, wherein said second processing chamber shows, over its lower portion, a conical or stepwise increase in its external diameter and a sudden increase in its internal diameter to from 2 to 10 times the internal diameter of the duct, the longitudinal slots extending into said enlarged region to terminate in a closed ring.
Inventors
- 👤 Hans Schmid
- 👤 Heinrich Feldhoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:47
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/16; D02G1/161
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
213 words
Apparatus for the manufacture of texturized filaments of synthetic linear high molecular weight materials using hot fluids and consisting of a closed first processing chamber having an inlet tube for the supply of fluid, a filament inlet channel at one end of said processing chamber, a filament guide channel projecting into said processing chamber from its other end, said filament guide channel being rigidly mounted on the said processing chamber and the ratio of the internal diameter of the filament guide channel to that of the filament inlet channel being from 1:1 to 1:4 and the distance between the filament guide channel and the filament inlet channel being from 0.1 to 3 mm, and a second, duct-like processing chamber located at the free end of the filament guide channel and provided with radial slots extending in the longitudinal direction of the duct, wherein the second, cylindrical processing chamber having radial slots extending in the longitudinal direction of the duct shows, over its lower portion, stepwise increase in its external diameter and a sudden increase in its internal diameter to from 2 to 10 times the internal diameter of the duct, the longitudinal slots extending into said enlarged region to be terminated by a closed ring located at the end of said enlarged region.
Claim 2
Dependent Claim
213 words
Apparatus for the manufacture of texturized filaments of synthetic linear high molecular weight materials using hot fluids and consisting of a closed first processing chamber having an inlet tube for the supply of fluid, a filament inlet channel at one end of said processing chamber, a filament guide channel projecting into said processing chamber from its other end, said filament guide channel being rigidly mounted on the said processing chamber and the ratio of the internal diameter of the filament guide channel to that of the filament inlet channel being from 1:1 to 1:4 and the distance between the filament guide channel and the filament inlet channel being from 0.1 to 3 mm, and a second, duct-like processing chamber located at the free end of the filament guide channel and provided with radial slots extending in the longitudinal direction of the duct, wherein the second, cylindrical processing chamber having radial slots extending in the longitudinal direction of the duct shows, over its lower portion, stepwise increase in its external diameter and a sudden increase in its internal diameter to from 2 to 10 times the internal diameter of the duct, the longitudinal slots extending into said enlarged region to be terminated by a closed ring located at the end of said enlarged region.
Claim 3
Dependent Claim
47 words
Apparatus as claimed in claim 1, wherein the second processing chamber provided with radial slots extending in the longitudinal direction of the duct tapers outwardly in the region of the slots at a gradient of from 1:20 to 1:100 in the direction of transport of the filaments.
Claim 4
Dependent Claim
22 words
The apparatus of claim 1 wherein said sudden increase in the internal diameter of said cylindrical processing chamber is a stepwise increase.
Claim 5
Dependent Claim
214 words
Apparatus for the manufacture of texturized filaments of synthetic linear high molecular weight materials using hot fluids and consisting of a closed first processing chamber having an inlet tube for the supply of fluid, a filament inlet channel at one end of said processing chamber, a filament guide channel projecting into said processing chamber from its other end, said filament guide channel being rigidly mounted on the said processing chamber and the ratio of the internal diameter of the filament guide channel to that of the filament inlet channel being from 1:1 to 1:4 and the distance between the filament guide channel and the filament inlet channel being from 0.1 to 3 mm, and a second, duct-like processing chamber located at the free end of the filament guide channel and provided with radial slots extending in the longitudinal direction of the duct, wherein the second, Cylindrical processing chamber having radial slots extending in the longitudinal direction of the duct shows, over its lower portion, a conical increase in its external diameter and a sudden increase in its internal diameter to from 2 to 10 times the internal diameter of the duct, the longitudinal slots extending into said enlarged region to be terminated by a closed ring located at the end of said enlarged region.
Claim 6
Dependent Claim
214 words
Apparatus for the manufacture of texturized filaments of synthetic linear high molecular weight materials using hot fluids and consisting of a closed first processing chamber having an inlet tube for the supply of fluid, a filament inlet channel at one end of said processing chamber, a filament guide channel projecting into said processing chamber from its other end, said filament guide channel being rigidly mounted on the said processing chamber and the ratio of the internal diameter of the filament guide channel to that of the filament inlet channel being from 1:1 to 1:4 and the distance between the filament guide channel and the filament inlet channel being from 0.1 to 3 mm, and a second, duct-like processing chamber located at the free end of the filament guide channel and provided with radial slots extending in the longitudinal direction of the duct, wherein the second, Cylindrical processing chamber having radial slots extending in the longitudinal direction of the duct shows, over its lower portion, a conical increase in its external diameter and a sudden increase in its internal diameter to from 2 to 10 times the internal diameter of the duct, the longitudinal slots extending into said enlarged region to be terminated by a closed ring located at the end of said enlarged region.
References Cited (Backward Citations)
US3808652A
Cited
US3714686A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |