US3750922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aspirator
Assignee: Celanese Corp
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Filing: 1971-12-30
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Granted: 1973-08-07
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Expires: 1991-12-30
Abstract
Abstract An aspirating device suitable for use in conjunction with the doffing of yarn wound members, the device employing a vacuum to pick up a yarn end and a selective compressed air supply to increase yarn threadline tensions only during initial yarn attachment to the next member to be wound. The compressed air is fed through a bushing member which serves to create a rarefield atmosphere and to spread the yarn filament bundle, increasing yarn cross-sectional area and consequently yarn tension.
Inventors
- 👤 T Bethea
- 👤 C Dixon
- 👤 W Hargett
- 👤 W Stokes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:28
CPC Classifications
B; B65; B65H; B65H51/00; B65H51/16; B65H54/00; B65H54/86; B65H54/88; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
96 words
An aspirating device suitable for use in conjunction with yarn doffing operations, said device comprising a housing, said housing provided with an inlet means connected to a valve actuated source of air under pressure, a yarn receiving nozzle member secured thereto, said nozzle being connected to a vacuum source, a bushing means disposed in said housing and fitted to said nozzle, said bushing having an axially disposed orifice fitted to said nozzle member and a plurality of aspirating holes evenly positioned about said orifice on an equal radius whereby a rarified air condition may be created.
Claim 2
Dependent Claim
96 words
An aspirating device suitable for use in conjunction with yarn doffing operations, said device comprising a housing, said housing provided with an inlet means connected to a valve actuated source of air under pressure, a yarn receiving nozzle member secured thereto, said nozzle being connected to a vacuum source, a bushing means disposed in said housing and fitted to said nozzle, said bushing having an axially disposed orifice fitted to said nozzle member and a plurality of aspirating holes evenly positioned about said orifice on an equal radius whereby a rarified air condition may be created.
Claim 3
Dependent Claim
12 words
The apparatus of claim 1 wherein said aspirating holes are 45* apart.
Claim 4
Dependent Claim
18 words
The apparatus of claim 1 wherein said aspirating holes are at an angle of 40* from the horizontal.
Claim 5
Dependent Claim
30 words
The apparatus of claim 1 wherein the face of said bushing opposite the nozzle fitted face is secured to a sleeve member which forms a throat in a vacuum line.
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) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |