US3706138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and device for sealing adjacent chambers from each other
Assignee: Bruckner Apparatebau Michelstadt GmbH
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Filing: 1971-01-18
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Granted: 1972-12-19
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Expires: 1991-01-18
Abstract
Abstract A method and device for sealing from each other adjacent fluid containing chambers connected by a slot to accommodate passage of web material, in which fluid from within chamber is blown inwardly into the chamber in the region of the slot in an angular relation to the web material.
Inventors
- 👤 Manfred Schuierer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:26
CPC Classifications
D; D06; D06B; D06B23/00; D06B23/14; D06B23/16; D21; D21F; D21F5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
A method for sealing from each other two adjacent chambers which are connected together by a slot intended for the passage of a web of material, comprising the steps of withdrawing from each chamber a gaseous medium contained therein, blowing said gaseous medium back into the respective chamber in a region of the slot and at an angle approximately tangential to the web by means of two elongate pairs of nozzles, positioning each pair of nozzles so that one nozzle is above the web, and the other nozzle is below the web, thereby preventing the web from contacting a wall of said slot, and positioning said two pairs of nozzles in the region of said slot in opposite direction so that one pair of nozzles is blowing from the region of said slot into one chamber and the other pair of nozzles from the region of said slot in opposite direction into the other chamber.
Claim 2
Independent Claim
155 words
A method for sealing from each other two adjacent chambers which are connected together by a slot intended for the passage of a web of material, comprising the steps of withdrawing from each chamber a gaseous medium contained therein, blowing said gaseous medium back into the respective chamber in a region of the slot and at an angle approximately tangential to the web by means of two elongate pairs of nozzles, positioning each pair of nozzles so that one nozzle is above the web, and the other nozzle is below the web, thereby preventing the web from contacting a wall of said slot, and positioning said two pairs of nozzles in the region of said slot in opposite direction so that one pair of nozzles is blowing from the region of said slot into one chamber and the other pair of nozzles from the region of said slot in opposite direction into the other chamber.
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) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |