Patent US5435057A successfully refreshed from Google Patents.
US3746233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-supported thread overrun roller
Assignee: Oerlikon Barmag AG
•
Filing: 1972-07-06
•
Granted: 1973-07-17
•
Expires: 1992-07-06
Abstract
Abstract In textile apparatus, an air-supported thread overrun roller of tubular shell construction rotatably carried on a hollow shaft segment of enlarged diameter having radial openings to direct compressed air into a small annular bearing gap, thereby providing an air-cushioned bearing for the shell, an annular face plate partly enclosing each end of the tubular shell and containing a plurality of air outlet channels extending approximately parallel to the shell and obliquely to the shell axis of rotation. The thread overrun roller is especially useful in the high speed transport of threads, yarns or the like in stretching, twisting and other textile processing operations.
Inventors
- 👤 P Illg
- 👤 B Schimmel
- 👤 K Bauer
- 👤 M Mayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:25
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/22; D02J1/225; B; B65; B65H; B65H57/00; B65H57/14; F; F16; F16C; F16C13/00; F16C13/02; F16C32/00; F16C32/06; F16C32/0681; F16C32/0696; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
189 words
An air-supported thread overrun roller in textile apparatus comprising: a hollow tubular roller shell adapted to be rotatably driven by a transported thread; axle means to carry said roller shell including a shaft segment having an inlet conduit for compressed air extending axially into said roller shell and a hollow cylindrical segment of enlarged diameter connected to said shaft segment so as to extend axially between the two ends of said roller shell and to provide a compressed air chamber fitting concentrically within said roller shell with a small annular bearing gap therebetween, the cylindrical wall of said enlarged segment having radial openings to release compressed air into said bearing gap; and an annular face plate on said roller shell at either end thereof with the inner diameter of the face plate being smaller than the outer diameter of said enlarged axle segment, each face plate having a plurality of air outlet channels approximately parallel to the roller shell and extending obliquely to the axis of rotation of the shell, said channels being arranged at regular intervals on a circle concentric to the axis of rotation of the shell.
Claim 2
Dependent Claim
189 words
An air-supported thread overrun roller in textile apparatus comprising: a hollow tubular roller shell adapted to be rotatably driven by a transported thread; axle means to carry said roller shell including a shaft segment having an inlet conduit for compressed air extending axially into said roller shell and a hollow cylindrical segment of enlarged diameter connected to said shaft segment so as to extend axially between the two ends of said roller shell and to provide a compressed air chamber fitting concentrically within said roller shell with a small annular bearing gap therebetween, the cylindrical wall of said enlarged segment having radial openings to release compressed air into said bearing gap; and an annular face plate on said roller shell at either end thereof with the inner diameter of the face plate being smaller than the outer diameter of said enlarged axle segment, each face plate having a plurality of air outlet channels approximately parallel to the roller shell and extending obliquely to the axis of rotation of the shell, said channels being arranged at regular intervals on a circle concentric to the axis of rotation of the shell.
Claim 3
Dependent Claim
43 words
A roller as claimed in claim 1 wherein the diameter of said circle on which the air outlet channels are arranged is approximately equal to the mean diameter of the annular bearing gap located between the enlarged axle segment and the roller shell.
Claim 4
Dependent Claim
47 words
A roller as claimed in claim 1 including a plurality of axial openings in the end walls of the hollow cylindrical segment of said axle to release compressed air into a gap space between each end wall and the adjacent annular face plate of the roller shell.
Claim 5
Dependent Claim
32 words
A roller as claimed in claim 1 wherein said air outlet channels in each annular face plate folloW a curved path scooped in the fashion of the blades of an axial turbine.
Claim 6
Dependent Claim
24 words
A roller as claimed in claim 1 including means to control the air pressure in said pressure chamber formed by said enlarged axle segment.
Claim 7
Dependent Claim
38 words
A roller as claimed in claim 5 including at least two pressure lines connected to said pressure chamber to supply air at different pressures and means to selectively switch said pressure chamber to each of said pressure lines.
References Cited (Backward Citations)
US3063041A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |