US4758704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing a folded edge
Assignee: Karl Huber Verpackungswerke GmbH and Co
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Filing: 1986-04-18
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Granted: 1988-07-19
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Expires: 2006-04-18
Abstract
Abstract A method of producing a folded edge between the body and base and/or upper base of a container made out of fine and/or extra-fine sheet metal, whereby at least two layers of the fold are bonded together at least at various points along the at least almost finish-folded edge by means of fusion welding.
Inventors
- 👤 Hermann Kogel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:44
CPC Classifications
B; B23; B23K; B23K33/00; B23K33/004; B23K33/008; B21; B21D; B21D51/00; B21D51/16; B21D51/26; B23K26/00; B23K26/20; B23K26/21; B23K26/24; B23K26/244; B23K26/28; B65; B65D; B65D7/00; B65D7/12; B65D7/34; B65D7/38
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
110 words
A method for producing a folded edge between a body and base member of a container fabricated in a mass production line comprising: providing sheet metal for said body and base member; folding together edges of sheet metal of said body and said base member to produce a multi-layer folded edge; bonding together by laser fusion welding at least two layers of said folded edge at various point along said folded edge when said edge is at least almost finish-folded; said laser fusion welding being carried out by a laser beam directed radially outward at the folded edge at an angle ranging from a vertical position to a horizontal position.
Claim 2
Independent Claim
110 words
A method for producing a folded edge between a body and base member of a container fabricated in a mass production line comprising: providing sheet metal for said body and base member; folding together edges of sheet metal of said body and said base member to produce a multi-layer folded edge; bonding together by laser fusion welding at least two layers of said folded edge at various point along said folded edge when said edge is at least almost finish-folded; said laser fusion welding being carried out by a laser beam directed radially outward at the folded edge at an angle ranging from a vertical position to a horizontal position.
Claim 3
Independent Claim
133 words
A method for producing a folded edge between a body and base member of a container fabricated in a mass production line comprising: providing sheet metal for said body and base member; folding together edges of sheet metal of said body and said base member to produce a multi-layer folded edge; bonding together by laser fusion welding at least two layers of said folded edge at various point along said folded edge when said edge is at least almost finish-folded; said edge being almost finish-folded, and said laser fusion welding being carried out by a laser beam directed radially from the outside in at said almost finish-folded edge and welding at least two layers together; and finish-folding the edge thereafter with at least one layer folded over to cover up the welded seam.
Claim 4
Independent Claim
133 words
A method for producing a folded edge between a body and base member of a container fabricated in a mass production line comprising: providing sheet metal for said body and base member; folding together edges of sheet metal of said body and said base member to produce a multi-layer folded edge; bonding together by laser fusion welding at least two layers of said folded edge at various point along said folded edge when said edge is at least almost finish-folded; said edge being almost finish-folded, and said laser fusion welding being carried out by a laser beam directed radially from the outside in at said almost finish-folded edge and welding at least two layers together; and finish-folding the edge thereafter with at least one layer folded over to cover up the welded seam.
Claim 5
Independent Claim
137 words
A method for producing a folded edge between a body and base member of a container fabricated in a mass production line comprising: providing sheet metal for said body and base member; folding together edges of sheet metal of said body and said base member to produce a multi-layer folded edge; bonding together by laser fusion welding at least two layers of said folded edge at various point along said folded edge when said edge is at least almost finish-folded; said laser fusion welding being carried out with a laser beam directed radially inward at the folded edge at an angle ranging from a vertical to a horizontal position, said laser beam being directed at the body of said container; and folding over one layer of said base member so that it covers up the welding seam.
Claim 6
Independent Claim
137 words
A method for producing a folded edge between a body and base member of a container fabricated in a mass production line comprising: providing sheet metal for said body and base member; folding together edges of sheet metal of said body and said base member to produce a multi-layer folded edge; bonding together by laser fusion welding at least two layers of said folded edge at various point along said folded edge when said edge is at least almost finish-folded; said laser fusion welding being carried out with a laser beam directed radially inward at the folded edge at an angle ranging from a vertical to a horizontal position, said laser beam being directed at the body of said container; and folding over one layer of said base member so that it covers up the welding seam.
Claim 7
Dependent Claim
34 words
A method as defined in claim 2, wherein said laser beam is directed at the body of said container; and folding over one layer of said base member to cover up the welding seam.
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) | 1991-07-19 | 1992-01-18 | 1992-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-19 | 1996-01-18 | 1996-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-19 | 2000-01-18 | 2000-07-19 | $7700.00 | Window Closed / Lapsed |