Patent US3763571A successfully refreshed from Google Patents.
US3763571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for contactless guiding of webs
Assignee: Vits Maschinenbau GmbH
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Filing: 1971-04-26
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Granted: 1973-10-09
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Expires: 1991-04-26
Abstract
Abstract This is a method of, and apparatus for, contactless guiding a web of material to be treated by a fluid medium, the flow energy of which is produced in a nozzle. One and the same nozzle can be optionally used to produce cushions of the treating medium which maintain the web of material in a floating condition or to produce a jet shaped by the back of an airplane wing profile whereby the web of material is kept in a floating condition by subjecting it to pressure and suction forces.
Inventors
- 👤 H Vits
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:04
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/52; C21D9/54; C21D9/56; C21D9/63; B; B65; B65G; B65G15/00; B65G15/60; F; F26; F26B; F26B13/00; F26B13/10; F26B13/101; F26B13/104; B65G2201/00; B65G2201/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
197 words
A nozzle comprising a pair of nozzle slots for the ejection of streams of compressed gas therethrough, said nozzle slots extending transverse to a predetermined direction and being formed by outer stationary guide faces arranged spaced from each other in said predetermined direction and oppositely inclined with respect thereto and inner guide faces on an adjustable member having an airplane wing profile; means connected to said adjustable member for moving the same between a first position in which the guide faces on said adjustable member cooperate with said stationary guide faces so that the gas stream emanating from one of said slots extends substantially in said predetermined direction and the gas stream emanating from the other of said slots is inclined to and directed towards the gas stream emanating from said one slot, and a second position in which a guide face on said movable member in the region of said other slot cooperates with the adjacent stationary guide face so that the gas stream emanating from said other slot extends substantially in the same direction as the gas stream emanating from said one slot; and means for supplying a gas under pressure to said movable slots.
Claim 2
Dependent Claim
197 words
A nozzle comprising a pair of nozzle slots for the ejection of streams of compressed gas therethrough, said nozzle slots extending transverse to a predetermined direction and being formed by outer stationary guide faces arranged spaced from each other in said predetermined direction and oppositely inclined with respect thereto and inner guide faces on an adjustable member having an airplane wing profile; means connected to said adjustable member for moving the same between a first position in which the guide faces on said adjustable member cooperate with said stationary guide faces so that the gas stream emanating from one of said slots extends substantially in said predetermined direction and the gas stream emanating from the other of said slots is inclined to and directed towards the gas stream emanating from said one slot, and a second position in which a guide face on said movable member in the region of said other slot cooperates with the adjacent stationary guide face so that the gas stream emanating from said other slot extends substantially in the same direction as the gas stream emanating from said one slot; and means for supplying a gas under pressure to said movable slots.
Claim 3
Dependent Claim
22 words
A nozzle as defined in claim 1, wherein said adjustable member is arranged tiltable between said first and said second position thereof.
Claim 4
Dependent Claim
89 words
A nozzle as defined in claim 2, wherein said stationary guide faces have each an end edge extending transverse to said direction and being spaced from the edge of the other stationary guide face, and wherein said adjustable member has in the region of said other slot a concavely curved guide face which is located in said first position of said adjustable member inwardly spaced from the adjacent stationary guide face and in said second position spaced from and opposite the end edge of said adjacent stationary guide face.
Claim 5
Dependent Claim
41 words
A nozzle as defined in claim 3, wherein said adjustable member has in the region of said one slOt a convexly curved guide face located in said first and said second position inwardly spaced from the stationary guide face adjacent thereto.
Claim 6
Dependent Claim
51 words
A nozzle as defined in claim 1, wherein said adjustable member is hollow and has a wall, the interior of said hollow member communicating with the means for supplying compressed gas to said nozzle slots, said wall being provided with perforations so that compressed gas will flow through said perforation outwardly.
Claim 7
Dependent Claim
36 words
A nozzle as defined in claim 5, wherein the combined open cross section of said perforations is less than half of the combined open cross sections of said slots in either position of said adjustable member.
Claim 8
Dependent Claim
88 words
A nozzle as defined in claim 1, wherein said stationary guide faces form part of a nozzle box, wherein said adjustable member is mounted in said nozzle box, tiltable about a tilting axis, and wherein said means for moving said adjustable member between said positions thereof comprise eccentric means turnably mounted in said nozzle box and connected to a portion of said adjustable member spaced from the tilting axis thereof, said means for supplying gas under pressure to said slots communicating with the interior of said nozzle box.
Claim 9
Dependent Claim
155 words
A nozzle as defined in claim 1, wherein said stationary guide faces form part of a pair of lateral walls of a nozzle box and form inner faces of portions of said lateral walls extending toward each other and ending in end edges extending transverse to said direction spaced from each other, said adjustable member being hollow and being mounted in said nozzle box tiltable about a tilting axis extending transverse to said direction and shiftable in this direction relative to said tilting axis, said hollow member having a wall portion between said end edges, said wall portion being convexly curved, said wall portion being formed with perforations therethrough, said means for moving said adjustable member between said positions thereof comprising eccentric means turnably mounted in said nozzle box and connected to said adjustable member, and said means for supplying gas under pressure to said nozzle slots communicating with the interior of said nozzle box.
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) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |