Patent US3684148A successfully refreshed from Google Patents.
US3684148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turning device for deflecting moving flexible webs of paper of plastic film
Assignee: Individual
•
Filing: 1970-10-13
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Granted: 1972-08-15
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Expires: 1990-10-13
Abstract
Abstract According to the invention, a turning device for deflecting moving flexible webs comprises a curved surface about which the web can be passed and which is defined by a plurality of individual supporting elements formed from curved shafts having a rotatable covering of which the web-supporting portions are movable at the same speed as and in the same direction as the web. In this way, the web can be passed over the supporting elements along a helical line corresponding to the required deflection angle without having to slide over the curved surface defined by the supporting elements. Positive guiding of the individual supporting elements is not necessary and therefore there will be no appreciable wear and the device will not give rise to frequent interruptions in production.
Inventors
- 👤 Hartmut Upmeier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:41
CPC Classifications
B; B65; B65H; B65H23/00; B65H23/04; B65H23/32; B65H2301/00; B65H2301/30; B65H2301/34; B65H2301/342; B65H2301/3423
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
71 words
A turning device for deflecting moving flexible webs, comprising a curved surface having web-supporting portions about which the web can be passed, said curved surface comprising a plurality of individual supporting elements, each of said supporting elements comprising a shaft having a curved axis and a covering arranged to rotate round said axis, said web-supporting portions being movable at the same speed as and in the same direction as the web.
Claim 2
Dependent Claim
71 words
A turning device for deflecting moving flexible webs, comprising a curved surface having web-supporting portions about which the web can be passed, said curved surface comprising a plurality of individual supporting elements, each of said supporting elements comprising a shaft having a curved axis and a covering arranged to rotate round said axis, said web-supporting portions being movable at the same speed as and in the same direction as the web.
Claim 3
Dependent Claim
30 words
A device according to claim 1, wherein the shafts are helically curved and mounted so as to extend transversely to the direction of web movement where the web passes thereabout.
Claim 4
Dependent Claim
29 words
A device according to claim 1, further including a rotatable cylinder and wherein the shafts are substantially arcuately curved and mounted on said rotatable cylinder to extend circumferentially thereto.
Claim 5
Dependent Claim
24 words
A device according to claim 3, wherein the shafts are curved to substantially semi-circular shape and alternately arranged on opposite sides of the cylinder.
Claim 6
Dependent Claim
30 words
A device according to claim 1, further including individual rollers and wherein each rotatable covering comprises a flexible tube supported on the associated shaft by individual ones of said rollers.
Claim 7
Dependent Claim
13 words
A device according to claim 1, wherein the rotatable covering comprises individual rollers.
Claim 8
Dependent Claim
11 words
A device according to claim 6, wherein the rollers are barrel-shaped.
Claim 9
Dependent Claim
74 words
A turning deviCe for deflecting moving flexible webs, comprising a curved surface about which the web can be passed and which is defined by a plurality of individual supporting elements formed from curved shafts having a rotatable covering of which the web-supporting portions are movable at the same speed as and in the same direction as the web, said shafts being substantially arcuately curved and mounted on said rotatable cylinder to extend circumferentially thereto.
Claim 10
Dependent Claim
74 words
A turning deviCe for deflecting moving flexible webs, comprising a curved surface about which the web can be passed and which is defined by a plurality of individual supporting elements formed from curved shafts having a rotatable covering of which the web-supporting portions are movable at the same speed as and in the same direction as the web, said shafts being substantially arcuately curved and mounted on said rotatable cylinder to extend circumferentially thereto.
Claim 11
Dependent Claim
24 words
A device according to claim 8, wherein the shafts are curved to substantially semi-circular shape and alternately arranged on opposite sides of the cylinder.
Claim 12
Dependent Claim
30 words
A device according to claim 8, further including individual rollers and wherein each rotatable covering comprises a flexible tube supported on the associated shaft by individual ones of said rollers.
Claim 13
Dependent Claim
13 words
A device according to claim 8, wherein the rotatable covering comprises individual rollers.
Claim 14
Dependent Claim
11 words
A device according to claim 11, wherein the rollers are barrel-shaped.
References Cited (Backward Citations)
US1273926A
Cited
US3583621A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |