US3834600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the transport of yarns
Assignee: Rhone Poulenc Textile SA
•
Filing: 1972-09-07
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Granted: 1974-09-10
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Expires: 1992-09-07
Abstract
Abstract Apparatus for the high speed transport of yarns using a fluid comprising a first guide passage, a second guide passage, the outlet of the first guide passage communicating with the inlet of the second guide passage, and a longitudinal slot in the second guide passage extending upstream from the outlet of the second guide passage along the length of the second guide passage.
Inventors
- 👤 C Benchemoul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:12
CPC Classifications
B; B65; B65H; B65H51/00; B65H51/16; B65H65/00; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
125 words
Apparatus for the high speed pneumatic transport of yarns comprising, in the direction of yarn movement, a first guide passage of predetermined diameter and a second guide passage of predetermined diameter disposed at an angle relative to each other, the outlet of said first passage attached to the inlet of said second guide passage, means for directing a stream of fluid through said first and second passages, a longitudinal slot extending upstream from the outlet of said second guide passage along the length of said second guide passage, a screen extending from the outlet of said first guide passage into said second guide passage for reducing said predetermined diameter of said second guide passage in the vicinity of the inlet of said second guide passage.
Claim 2
Dependent Claim
125 words
Apparatus for the high speed pneumatic transport of yarns comprising, in the direction of yarn movement, a first guide passage of predetermined diameter and a second guide passage of predetermined diameter disposed at an angle relative to each other, the outlet of said first passage attached to the inlet of said second guide passage, means for directing a stream of fluid through said first and second passages, a longitudinal slot extending upstream from the outlet of said second guide passage along the length of said second guide passage, a screen extending from the outlet of said first guide passage into said second guide passage for reducing said predetermined diameter of said second guide passage in the vicinity of the inlet of said second guide passage.
Claim 3
Dependent Claim
28 words
The apparatus of claim 1, wherein said screen is an extension of said first guide passage into said second guide passage and integral with said first guide passage.
Claim 4
Dependent Claim
19 words
The apparatus of claim 1 wherein said longitudinal slot extends substantially the entire length of said second guide passage.
Claim 5
Dependent Claim
31 words
The apparatus of claim 2 wherein said screen includes a surface having a low coefficient of friction and a high resistance to abrasion attached to the lower extremity of the screen.
Claim 6
Dependent Claim
19 words
The apparatus of claim 2 wherein said longitudinal slot extends substantially the entire length of said second guide passage.
Claim 7
Dependent Claim
31 words
The apparatus of claim 1 wherein said screen includes a surface having a low coefficient of friction and a high resistance to abrasion attached to the lower extremity of the screen.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |