US3559860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Textile varn handling devices
Assignee: Imperial Chemical Industries Ltd
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Filing: 1968-06-24
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Granted: 1971-02-02
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Expires: 1988-06-24
Abstract
Abstract A yarn handling device comprising in combination a driving air inlet tube having a first portion surrounding an entrained air and yarn inlet tube and an air and yarn outlet portion arranged to receive both driving and entrained air, said outlet portion having a cross-sectional area of similar dimensions to that of said driving air inlet tube where they abut, and said driving air inlet tube being so arranged that the driving air is accelerated along it, thereby entraining air along the said entrained air and yarn inlet tube, wherein said driving air enters said outlet portion in a direction substantially parallel to the general direction of flow of entrained air.
Inventors
- 👤 Malcolm John East
- 👤 Brian Beddoe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:27
CPC Classifications
B; B65; B65H; B65H51/00; B65H51/16; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
123 words
A yarn-handling device comprising a yarn inlet tube having an outlet end portion of constant external cross section for conveying yarn and entrained air; wall means defining a driving air chamber surrounding said yarn inlet tube, said chamber having a first portion of relatively large cross-sectional area and a second coaxial portion of decreasing cross-sectional area; means defining an outlet passageway of constant cross section extending coaxially from said second chamber portion, said yarn inlet tube projecting into said passageway a short distance and terminating therein so as to define a generally annular constant cross section passageway through which driving air from said chamber flows into said outlet passageway in a direction substantially parallel to the general direction of flow of entrained air.
Claim 2
Dependent Claim
123 words
A yarn-handling device comprising a yarn inlet tube having an outlet end portion of constant external cross section for conveying yarn and entrained air; wall means defining a driving air chamber surrounding said yarn inlet tube, said chamber having a first portion of relatively large cross-sectional area and a second coaxial portion of decreasing cross-sectional area; means defining an outlet passageway of constant cross section extending coaxially from said second chamber portion, said yarn inlet tube projecting into said passageway a short distance and terminating therein so as to define a generally annular constant cross section passageway through which driving air from said chamber flows into said outlet passageway in a direction substantially parallel to the general direction of flow of entrained air.
Claim 3
Dependent Claim
20 words
A yarn-handling device as claimed in claim 1 wherein said yarn inlet tube is assymetrically arranged within said outlet passageway.
Claim 4
Dependent Claim
21 words
A yarn handling device as claimed in claim 1 wherein the said yarn inlet tube is bent at its terminal end.
Claim 5
Dependent Claim
25 words
A yarn-handling device as claimed in claim 1 wherein the said yarn inlet tube is provided with holes in its walls at its terminal end.
Claim 6
Dependent Claim
26 words
A yarn-handling device as claimed in claim 4 in which three holes are provided in the wools of said yarn inlet tube at its terminal end.
Claim 7
Dependent Claim
24 words
A yarn-handling device as claimed in claim 1 in which said entrained air and yarn inlet tube is provided with a castellated inner end.
Claim 8
Dependent Claim
24 words
A yarn-handling device as claimed in claim 1 in which said entrained yarn and yarn inlet tube is provided with a chamfered inner end.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |