Patent US4401503A successfully refreshed from Google Patents.
US4401503A
Expired / Lapsed
US
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Apparatus for this application of an adhesive web longitudinally and with U-shaped section about the edge of a sheet metal panel or the like shaped part of sheet metal
Assignee: BASF Corp
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Filing: 1982-08-12
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Granted: 1983-08-30
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Expires: 2002-08-12
Abstract
Abstract An adhesive web is to be pressed on to the edge of a shaped sheet metal part, so that the web portion on the metal part has a U-shaped cross-section. To this end, the adhesive web is first peeled off a carrier tape and is then folded with the aid of a deflecting and pre-folding roller having a profile whose cross-section is a wide V. The pre-folded web is then folded further continuously in a funnel-shaped pre-folding channel. The sheet metal part whose edge is to be covered is then introduced with that edge, within the reach of the pre-folding channel, into the folded bend of the adhesive web, and both the sheet metal part and the web thereon are conveyed together by a pair of feed and press-on rollers which press the adhesive web on the edge and sides of the sheet metal part.
Inventors
- 👤 Helfried Hertel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:22
CPC Classifications
B; B31; B31F; B31F5/00; B31F5/06; B31F5/08; B31F5/085; B65; B65H; B65H35/00; B65H35/0006; B65H35/002; B65H35/0026; B65H35/0033; B65H37/00; B65H37/002; B65H37/04; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1008; Y10T156/101; Y10T156/1011; Y10T156/1034
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
273 words
An apparatus for applying an adhesive web longitudinally and with U-shaped cross section about the edge of a panel or the like shaped part of sheet metal, being equipped with web-guiding means comprising a funnel-like pre-folding channel having an entry end, an exit end and a central longitudinal axis therethrough; a pair of feed and press-on rollers each of which rollers comprises a feed roller shaft being spring-biassed to press one roller against the other, said feed and press-on rollers being adapted for receiving between them a pre-folded adhesive web emerging from said pre-folding channel and for pressing said pre-folded adhesive web against an edge and against the opposite sides adjacent said edge, of said shaped part of sheet metal, while said part is being introduced into contact with said folded adhesive web; bearing means on which said pair of feed and press-on rollers is pivotally mounted to be swivable as a unit about a common swivel shaft, said swivel shaft having a longitudinal axis which extends parallel to said shafts of said feed and press-on rollers and is located, ahead of said roller pair, taken in the direction of travel of said sheet metal part and adhesive web between said feed and press-on rollers of said pair, at least approximately in the plane of symmetry of said pre-folding channel, said feed and press-on rollers being adapted for being driven by motor means and exerting on the sheet metal part, being pulled through said unit by said feed and press-on rollers, an at least approximately constant force of conveyance even when differences occur between the speeds of the two rollers of said pair.
Claim 2
Independent Claim
273 words
An apparatus for applying an adhesive web longitudinally and with U-shaped cross section about the edge of a panel or the like shaped part of sheet metal, being equipped with web-guiding means comprising a funnel-like pre-folding channel having an entry end, an exit end and a central longitudinal axis therethrough; a pair of feed and press-on rollers each of which rollers comprises a feed roller shaft being spring-biassed to press one roller against the other, said feed and press-on rollers being adapted for receiving between them a pre-folded adhesive web emerging from said pre-folding channel and for pressing said pre-folded adhesive web against an edge and against the opposite sides adjacent said edge, of said shaped part of sheet metal, while said part is being introduced into contact with said folded adhesive web; bearing means on which said pair of feed and press-on rollers is pivotally mounted to be swivable as a unit about a common swivel shaft, said swivel shaft having a longitudinal axis which extends parallel to said shafts of said feed and press-on rollers and is located, ahead of said roller pair, taken in the direction of travel of said sheet metal part and adhesive web between said feed and press-on rollers of said pair, at least approximately in the plane of symmetry of said pre-folding channel, said feed and press-on rollers being adapted for being driven by motor means and exerting on the sheet metal part, being pulled through said unit by said feed and press-on rollers, an at least approximately constant force of conveyance even when differences occur between the speeds of the two rollers of said pair.
Claim 3
Dependent Claim
55 words
The apparatus of claim 1, wherein the distance from said swivel axis, of said unit consisting of said roller pair, to a common plane extending through the axes of both roller shafts of said pair is at least approximately equal to the distance between said common plane and said exit end of said pre-folding channel.
Claim 4
Dependent Claim
69 words
The apparatus of claim 1 or 2, wherein said unit consisting of said pair of feed and press-on rollers is held resiliently in a neutral position relative to said exit end of said pre-folding channel, and has a unit plane of symmetry extending between the two rollers of said pair, which last-mentioned plane of symmetry coincides, in said neutral position, with said central longitudinal axis of said pre-folding channel.
Claim 5
Dependent Claim
38 words
The apparatus of claim 1, further comprising a web-deflecting roller so arranged directly ahead of said pre-folding channel, in the direction of travel of said adhesive web, as to act as a pre-folding roller on said adhesive web.
Claim 6
Dependent Claim
49 words
The apparatus of claim 4, wherein said pre-folding roller bears a profile which is weakly arcuate or V-shaped, said profile having a large profile angle enclosed by said arc or V, and having the zone of smallest diameter in the middle of the peripheral face of said pre-folding roller.
Claim 7
Dependent Claim
14 words
The apparatus of claim 5, wherein said profile angle is about 155° to 165°.
Claim 8
Dependent Claim
47 words
The apparatus of claim 1, wherein said pre-folding channel has a V-shaped cross-sectional area and the angle between the legs of said V is from about 90° to 100° at said entry end, and from about 10° to 15° at said exit end of said pre-folding channel.
Claim 9
Dependent Claim
50 words
The apparatus of claim 4, wherein said pre-folding channel has an effective channel length for the passage of said adhesive web therethrough while being pre-folded therein, and said deflecting and pre-folding roller has an effective width, said effective channel length amounting to from about 60 to 80% of said width.
Claim 10
Dependent Claim
42 words
The apparatus of claim 1, further comprising drive means comprising a common motor for driving said rollers of said pair, and at least one elastically twistable element coupled to said motor and drivingly connected to one of said rollers of said pair.
Claim 11
Dependent Claim
17 words
The apparatus of claim 9, wherein said elastically twistable element is a flexible and torsionally elastic shaft.
Claim 12
Dependent Claim
78 words
The apparatus of claim 1, wherein at least one of the two feed roller shafts is pivotally supported in said unit about a shaft pivot axis, and said unit comprises a spring urging the roller of said pivotally supported shaft against the other roller, the position of said shaft pivot axis being so adjustable that at a given distance of the rollers of said pair from one another said two roller shafts are exactly parallel with each other.
Claim 13
Dependent Claim
67 words
The apparatus of claim 4, wherein said web guiding means comprise a biassing spring and means for displacing said deflecting and pre-folding roller relative to said pre-folding channel in a direction transverse to the path through which said adhesive web travels when passing from said entry end to said exit end of said pre-folding channel, said biassing spring urging said deflecting and pre-folding roller toward said path.
Claim 14
Dependent Claim
34 words
The apparatus of claim 12, wherein the direction of displacement of said deflecting and pre-folding roller is at least substantially parallel to the roller shafts of said feed and press-on rollers of said pair.
References Cited (Backward Citations)
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US2916079A
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US4155798A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-29 | 1987-02-28 | 1987-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-29 | 1991-02-28 | 1991-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-29 | 1995-02-28 | 1995-08-30 | $7700.00 | Window Closed / Lapsed |