US3669328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Yarn feeding and tensioning apparatus
Assignee: Individual
•
Filing: 1970-06-12
•
Granted: 1972-06-13
•
Expires: 1990-06-12
Abstract
Abstract A device for controllably guiding yarns in textile machines consisting of a hollow member through which the yarn is caused to pass by nozzle means which controllably supply compressed air into said hollow member.
Inventors
- 👤 Luigi Castelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:29
CPC Classifications
D; D03; D03D; D03D47/00; B; B65; B65H; B65H51/00; B65H51/16; B65H51/20; B65H51/205; B65H59/00; B65H59/10; B65H59/105; D02; D02G; D02G1/00; D02G1/12; D02G1/16; D02G1/161; D03D47/34; D03D47/36; D03D47/368; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
142 words
A device for controllably conveying yarns in textiles machines, spinning frames and the like, comprising a body having a yarn inlet and a yarn outlet spaced therefrom, means defining a cavity inside said fixed body for providing communication between said yarn inlet and the said yarn outlet for the passage of the yarn therethrough, nozzle means arranged to supply a pressure fluid into said cavity and to provide a stream of said fluid substantially parallel to said yarn all around the periphery thereof, said nozzle means being arranged opposite to each other adjacent to said yarn inlet and to said yarn outlet, respectively, for blowing the pressure fluid against said yarn in opposite senses, said cavity including in an intermediate part thereof a collection chamber for the yarn between said inlet and said outlet and having venting apertures for the pressure fluid.
Claim 2
Independent Claim
142 words
A device for controllably conveying yarns in textiles machines, spinning frames and the like, comprising a body having a yarn inlet and a yarn outlet spaced therefrom, means defining a cavity inside said fixed body for providing communication between said yarn inlet and the said yarn outlet for the passage of the yarn therethrough, nozzle means arranged to supply a pressure fluid into said cavity and to provide a stream of said fluid substantially parallel to said yarn all around the periphery thereof, said nozzle means being arranged opposite to each other adjacent to said yarn inlet and to said yarn outlet, respectively, for blowing the pressure fluid against said yarn in opposite senses, said cavity including in an intermediate part thereof a collection chamber for the yarn between said inlet and said outlet and having venting apertures for the pressure fluid.
Claim 3
Dependent Claim
35 words
A device as claimed in claim 1, wherein said body is a tubular member and the said intermediate chamber has an inner diameter greater than the inner diameter of the remaining portions oF said cavity.
References Cited (Backward Citations)
US2302790A
Cited
US2885257A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |