US3921265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus to produce non-woven fabric
Assignee: Deering Milliken Research Corp
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Filing: 1974-09-30
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Granted: 1975-11-25
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Expires: 1994-09-30
Abstract
Abstract A machine and method to provide a non-woven fabric which employs a multiplurality of yarn lay down arms which are driven by a unique gearing arrangement to provide a substantially uniform yarn velocity.
Inventors
- 👤 Paul W Eschenbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:58
CPC Classifications
D; D04; D04H; D04H3/00; D04H3/02; D04H3/07; D04H3/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
73 words
Method of producing a non-woven fabric on a machine having spaced apart yarn guides and a yarn guide arm to wrap yarn around the spaced apart yarn guides comprising the steps of: providing a supply of weft yarn, supplying weft yarn to the yarn guide arm and rotating the yarn guide arm in a substantially elliptical path to wind the weft yarn at a substantially uniform velocity around the spaced apart yarn guides.
Claim 2
Dependent Claim
73 words
Method of producing a non-woven fabric on a machine having spaced apart yarn guides and a yarn guide arm to wrap yarn around the spaced apart yarn guides comprising the steps of: providing a supply of weft yarn, supplying weft yarn to the yarn guide arm and rotating the yarn guide arm in a substantially elliptical path to wind the weft yarn at a substantially uniform velocity around the spaced apart yarn guides.
Claim 3
Dependent Claim
80 words
Apparatus to produce a non-woven fabric comprising: yarn support means including a pass of yarn supports spaced from one another, means for supporting a package of yarn, rotable yarn guide means operably associated with said pair of yarn supports to supply yarn from the yarn package support and to wind the yarn in an elliptical path about said pair of yarn supports at a substantially uniform velocity to form reaches therebtween and means to rotate said rotable yarn guide means.
Claim 4
Dependent Claim
80 words
Apparatus to produce a non-woven fabric comprising: yarn support means including a pass of yarn supports spaced from one another, means for supporting a package of yarn, rotable yarn guide means operably associated with said pair of yarn supports to supply yarn from the yarn package support and to wind the yarn in an elliptical path about said pair of yarn supports at a substantially uniform velocity to form reaches therebtween and means to rotate said rotable yarn guide means.
Claim 5
Dependent Claim
26 words
The apparatus of claim 2 wherein said means to rotate said yarn guide means includes a sun gear and at least one planet gear meshed therewith.
Claim 6
Dependent Claim
21 words
The apparatus of claim 3 wherein said rotable yarn guide means includes a slider crank mechanism connected to said planet gear.
Claim 7
Dependent Claim
31 words
The apparatus of claim 4 wherein said rotable yarn guide means further includes a yarn guide tube spaced from said slider crank mechanism and guiding yarn from the yarn package thereto.
References Cited (Backward Citations)
US3649411A
Cited
US3593394A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |