US3759432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Web drive and web processing controls for web processing machines
Assignee: Erwin Kampf GmbH and Co Maschinenfabrik
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Filing: 1972-06-23
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Granted: 1973-09-18
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Expires: 1992-06-23
Abstract
Abstract A web drive and web processing controls for web processing machines which include a synchronous torque booster whose input rotation is derived from the web spaced near the storage roll via a web-driven idler roller and whose output rotation positively drives web advancing rollers and the web processing rollers or other processing means, thereby maintaining a constant controlled tension on the web in the processing region.
Inventors
- 👤 A Hutzenlaub
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:53
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/38; F16H61/40; F16H61/46; F16H61/47; B; B21; B21C; B21C47/00; B21C47/003; B26; B26D; B26D3/00; B26D3/16; B26D3/161; B65; B65H; B65H23/00; B65H23/04; B65H23/18; B65H23/1806; F15; F15B; F15B9/00; F15B9/14
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
118 words
A web drive for web advancing means comprising in combination: a web supply roll and a web storage roll as part of the web processing machine; means for driving at least the web storage roll to wind the web around the roll; means for processing the web in a processing station located between the supply and storage rolls; means for advancing the web from the supply roll toward the processing station; means for sensing the lineal web speed at a point adjacent the storage roll; and a torque booster responsive to said sensing means for driving the processing means and the advancing means at a speed equal to the lineal web speed as sensed by the sensing means.
Claim 2
Dependent Claim
118 words
A web drive for web advancing means comprising in combination: a web supply roll and a web storage roll as part of the web processing machine; means for driving at least the web storage roll to wind the web around the roll; means for processing the web in a processing station located between the supply and storage rolls; means for advancing the web from the supply roll toward the processing station; means for sensing the lineal web speed at a point adjacent the storage roll; and a torque booster responsive to said sensing means for driving the processing means and the advancing means at a speed equal to the lineal web speed as sensed by the sensing means.
Claim 3
Dependent Claim
55 words
A drive as defined in claim 1, wherein: the sensing means is in the form of an idler roller which engages the web near the storage roll with frictional contact over a substantial portion of the idleR roller circumference, the idler roller being operationally linked to the torque booster to provide a controlling input therefor.
Claim 4
Dependent Claim
61 words
A drive as defined in claim 2, wherein: the torque booster is a synchronous hydraulic torque booster with an input shaft and an output shaft, the idler roller being mechanically linked to the booster input shaft via positive transmission means, the web processing means and web advancing means being likewise mechanically linked to the booster output shaft to be driven thereby.
Claim 5
Dependent Claim
54 words
A drive as defined in claim 2, wherein: the torque booster, the processing means, the advancing means, and the sensing means are so arranged relative to one another that the circumferential speed of the processing means and of the advancing means is the same as the lineal web speed sensed by the sensing means.
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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |