US3673300A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for rounding welded edge seams
Assignee: USM Corp
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Filing: 1970-06-23
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Granted: 1972-06-27
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Expires: 1990-06-23
Abstract
Abstract A method and apparatus for producing rounded edges on cuts made through welded seams in layers of material by a die placed on the material in which the die is first pressed into but not through the seams while the weld is soft to roundingly deform the material adjacent the die. After solidification of the weld, further die pressure cuts the material to form a welded edge seam having rounded edges.
Inventors
- 👤 Anton Muhlbach
- 👤 Gerhard Lauckhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:41
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/02; F15B2211/00; F15B2211/20; F15B2211/205; F15B2211/20507; F15B2211/20515; F15B2211/2053; F15B2211/20538; F15B2211/40; F15B2211/405; F15B2211/40507; F15B2211/40515; F15B2211/415; F15B2211/41572; F15B2211/4159; F15B2211/42; F15B2211/426; F15B2211/45; F15B2211/50; F15B2211/505; F15B2211/50509; F15B2211/50536; F15B2211/515; F15B2211/5151; F15B2211/55; F15B2211/60; F15B2211/605; F15B2211/6051; F15B2211/615; F15B2211/635; F15B2211/6355; F15B2211/70; F15B2211/705; F15B2211/7051; F15B2211/7052; F15B2211/76
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
95 words
A method of rounding edges on cuts made in layers of material welded together comprising the steps of: welding the layers of material at a location to be cut by pressing a die part way through the location in the layers of material to roundingly deform the material adjacent the die; cooling the weld to a solidified condition while retaining the deformation in the material and preventing separation of the welded layers with the die; and after solidification pressing the die through the material along the weld to cut the material adjacent the rounded deformation.
Claim 2
Independent Claim
95 words
A method of rounding edges on cuts made in layers of material welded together comprising the steps of: welding the layers of material at a location to be cut by pressing a die part way through the location in the layers of material to roundingly deform the material adjacent the die; cooling the weld to a solidified condition while retaining the deformation in the material and preventing separation of the welded layers with the die; and after solidification pressing the die through the material along the weld to cut the material adjacent the rounded deformation.
Claim 3
Dependent Claim
40 words
A method as in claim 1 comprising the additional step of maintaining a die pressure on the material throughout the welding, rounding, cooling and cutting steps to hold the layers of welded material together and round edges on the cut.
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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |