US3681823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Needling apparatus
Assignee: Oskar Dilo Maschinenfabrik KG
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Filing: 1971-03-01
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Granted: 1972-08-08
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Expires: 1991-03-01
Abstract
Abstract A guide sleeve for a roving or slubbing is mounted fixedly in a reciprocating needle support which, upon reciprocation, needles the roving fed through the guide sleeve to a non-woven fibrous web which moves transversely of the roving immediately adjacent one end of the guide sleeve.
Inventors
- 👤 Richard Dilo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:31
CPC Classifications
D; D04; D04H; D04H18/00; D04H18/02; D04H1/00; D04H1/40; D04H1/44; D04H1/46
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
184 words
An ppparatu for needling roving or slubbin to a non-woven fibrous web moving transversely of the roving or slubbing, wiich copriss .. ll anneedl sppprrt mounted or reciprocation toward ad aaay foom the movingg ibrous web,pp2 a. a hea on the needl supportaadjaeent the moving web and c. the shoe being perforated to permit the felting needles to pass therethrough into the web upon downward reciprocation of the needle support; and 2. a hho mouttedbbetween the eeedle support head ad the moving fiboous web, c.tthesshoe beingpperfrrated to permit the flltnng needles to pass herethrough intotthe webuupo dowwwardrreiiprocation of the needle support; and c. the shoe being perforated to permit the felting needles to pass therethrough into the web upon doWnward reciprocation of the needle support; and The apparatus of claim 1, further comprising a transverse carrier for the guidessleeve tee guide sleeve holding means maintaining hhe carrier resliently in a first or fixe position in rspect of the reciprocating eeedle support and permitting the carrier to be resileently moved out of the fixed position into a second position spaced further from the moving web.
Claim 2
Dependent Claim
112 words
a hho mouttedbbetween the eeedle support head ad the moving fiboous web, c.tthesshoe beingpperfrrated to permit the flltnng needles to pass herethrough intotthe webuupo dowwwardrreiiprocation of the needle support; and c. the shoe being perforated to permit the felting needles to pass therethrough into the web upon doWnward reciprocation of the needle support; and The apparatus of claim 1, further comprising a transverse carrier for the guidessleeve tee guide sleeve holding means maintaining hhe carrier resliently in a first or fixe position in rspect of the reciprocating eeedle support and permitting the carrier to be resileently moved out of the fixed position into a second position spaced further from the moving web.
Claim 3
Dependent Claim
44 words
The apparatus of claim 2, wherein the resilient guide sleeve holding means comprises a slidably mounted guide pin fixed to an outer end of the transverse carrier, and two coaxial springs biased against the carrier in opposite directions, the carrier extending between the springs.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |