EP0161799A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A device for producing a travelling jet of hot gas
Assignee: Crown Packaging UK Ltd
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Filing: 1985-04-10
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Granted: —
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Expires: 2005-04-10
Abstract
Abstract @ A device for producing a travelling jet of hot gas which travels in a direction transverse to the axis of the jet, particularly for use in apparatus for erecting cartons wherein a heat activatable adhesive coating has to be heated at a particular location or locations while the cartons are conveyed continuously through the apparatus, comprises a fixed outer tube (25) formed with a longitudinally extending gas outlet or series of outlets (26, 38) and a rotatable inner tube (27) fitting closely with the outer tube and formed with a helical gas passage (28) communicating with its interior. Hot gas is supplied to the interior of the inner tube (27) which is rotated so that the point of coincidence of the helical gas passage with the outlet apertures moves longitudinally along the outer tube (25) so as to cause the hot gas jet to travel along the tube accordingly. In modifications, the rotatabletube may be the outer tube, or both tubes may be rotated.
Inventors
- 👤 John Richard Oakley
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 22:25
CPC Classifications
B; B29; B29C; B29C35/00; B29C35/02; B29C35/04; B05; B05B; B05B1/00; B05B1/005; B05B3/00; B05B3/02; B29C65/00; B29C65/02; B29C65/10; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/13; B29C66/131; B29C66/50; B29C66/51; B29C66/53; B29C66/534; B29C66/70; B29C66/72; B29C66/723; B29C66/7232; B29C66/72327; B29C66/72328; B29C66/73; B29C66/739; B29C66/7392; B29C65/48; B29C66/71; B29C66/80; B29C66/83; B29C66/836; B31; B31B; B31B50/00; B31B50/74; B31B50/741
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
152 words
A device for producing a travelling jet of hot gas which travels in a direction transverse to the axis of the jet, characterised by two tubes coaxially arranged one within the other and each formed with a gas passage means communicating its interior with its exterior, the respective gas passage means extending along the length of the respective tubes but being angularly disposed in relation to one another so that they coincide at one or more points, the device further including gas supply means for supplying hot gas to the interior of the inner tube, and drive means for rotating at least one of the tubes in relation to the other tube so that the or each point of coincidence of the gas passage means of the two tubes moves longitudinally in a substantially straight line along the outer tube to allow said hot gas to issue therefrom as a travelling jet.
Claim 2
Independent Claim
152 words
A device for producing a travelling jet of hot gas which travels in a direction transverse to the axis of the jet, characterised by two tubes coaxially arranged one within the other and each formed with a gas passage means communicating its interior with its exterior, the respective gas passage means extending along the length of the respective tubes but being angularly disposed in relation to one another so that they coincide at one or more points, the device further including gas supply means for supplying hot gas to the interior of the inner tube, and drive means for rotating at least one of the tubes in relation to the other tube so that the or each point of coincidence of the gas passage means of the two tubes moves longitudinally in a substantially straight line along the outer tube to allow said hot gas to issue therefrom as a travelling jet.
Claim 3
Dependent Claim
51 words
A device according to claim 1, characterised in that one of the tubes is fixed and its gas passage means extends in a substantially straight line along the length of the tube while the other tube is rotatable and its gas passage means extends helically along the length of the tube.
Claim 4
Dependent Claim
52 words
A device according to claim 1, characterised in that both tubes are rotatable and the drive means is arranged to cause them to counter-rotate in opposite senses and at the same speed, the gas passage means of the two tubes being helical and of the same helix angle but of opposite sense.
Claim 5
Independent Claim
36 words
A device according to any one of the preceding claims, characterised in that the gas passage means of the outer tube consists of a series of aligned slots extending through the wall of the outer tube.
Claim 6
Independent Claim
36 words
A device according to any one of claims 1 to 3, characterised in that the gas passage means of the outer tube consists of a series of bores extending through the wall of the outer tube.
Claim 7
Independent Claim
63 words
A device according to any one of the preceding claims, characterised in that the gas passage means of the inner tube is formed by a groove in the outer surface of the inner tube and holes formed through the wall of the inner tube along the base of the groove aso as to communicate the groove with the interior of the inner tube.
Claim 8
Dependent Claim
37 words
A device according to claim 2 or any one of claims 4 to 6 as appendant to claim 2, characterised in that the fixed tube is the outer tube and the rotatable tube is the inner tube.
Claim 9
Dependent Claim
58 words
A device according to claim 7 characterised in that the gas supply means comprises a source of hot gas and a duct connecting the source to one end of the outer tube, the adjacent end of the inner tube being located within the outer tube and being open, whereas the remote end of the inner tube is closed.
Claim 10
Dependent Claim
40 words
A device according to claim 8 characterised in that the means for rotating the inner tube comprises a pinion or sprocket mounted upon a closed end of the inner tube which projects from the adjacent end of the outer tube.
Claim 11
Dependent Claim
72 words
Apparatus for erecting cartons comprising means for conveying a series of partially erected cartons continuously through the apparatus, characterised in that a device according to any one of the preceding claims, is disposed adjacent to the conveying means so as to direct each of one or more travelling jets of hot gas at a particular location on every one of the said partially erected cartons as it is conveyed past the device.
References Cited (Backward Citations)
No citation records indexed.
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