US4347722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a cooking vessel which has surface ornamentation
Assignee: Individual
•
Filing: 1980-05-19
•
Granted: 1982-09-07
•
Expires: 2000-05-19
Abstract
Abstract A metal sheet is deformed to produce a blank which has one side which is smooth and another side which is ornamented with a pattern of raised and/or depressed areas. The blank is deformed to produce a cooking vessel which has the ornamented side located on its exterior surface.
Inventors
- 👤 John B. Ulam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:21
CPC Classifications
B; B21; B21D; B21D35/00; B21D35/002; B21D35/005; B21D35/006; B21H; B21H8/00; B21H8/005; B23; B23P; B23P15/00; B23P2700/00; B23P2700/05
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
148 words
A method of making a cooking vessel which has surface ornamentation, comprising the steps of: deforming a metal sheet to produce a blank which has one side which has an ornamental pattern formed of areas which are raised or depressed from the principal surface of said one side, deforming the blank to form therefrom a vessel which has interior and exterior surfaces, said step of deforming the blank being performed by engaging one side of the blank with a forming die and exerting fluid pressure on the opposite side of the blank which has the ornamental pattern with raised or depressed areas, said fluid pressure being sufficient to cause said blank to deform by conforming to the surface of said forming die, said deforming step being performed so that the side of the blank which has the ornamental pattern is located on the exterior surface of the vessel.
Claim 2
Independent Claim
148 words
A method of making a cooking vessel which has surface ornamentation, comprising the steps of: deforming a metal sheet to produce a blank which has one side which has an ornamental pattern formed of areas which are raised or depressed from the principal surface of said one side, deforming the blank to form therefrom a vessel which has interior and exterior surfaces, said step of deforming the blank being performed by engaging one side of the blank with a forming die and exerting fluid pressure on the opposite side of the blank which has the ornamental pattern with raised or depressed areas, said fluid pressure being sufficient to cause said blank to deform by conforming to the surface of said forming die, said deforming step being performed so that the side of the blank which has the ornamental pattern is located on the exterior surface of the vessel.
Claim 3
Dependent Claim
76 words
The method of claim 1 wherein the step of deforming the metal sheet to produce a blank is performed by rolling the sheet in a rolling mill to reduce the maximum thickness of the sheet, said rolling of the sheet being performed by contacting one side of the sheet with a smooth roll and contacting the other side of the sheet with a roll which has raised areas and depressed areas which form the ornamental pattern.
Claim 4
Dependent Claim
49 words
The method of claim 2 wherein the metal sheet is a composite metal sheet which has an aluminum face and a stainless steel face, said step of deforming the sheet to produce a blank being performed to provide the ornamental pattern on the side which has the aluminum face.
Claim 5
Dependent Claim
49 words
The method of claim 2 wherein the metal sheet is a composite metal sheet which has a copper face and a stainless steel face, said step of deforming the sheet to produce a blank being performed to provide the ornamental pattern on the side which has the copper face.
Claim 6
Dependent Claim
49 words
The method of claim 1 wherein the metal sheet is a composite metal sheet which has an aluminum face and a stainless steel face, said step of deforming the sheet to produce a blank being performed to provide the ornamental pattern on the side which has the aluminum face.
Claim 7
Dependent Claim
49 words
The method of claim 1 wherein the metal sheet is a composite metal sheet which has a copper face and a stainless steel face, said step of deforming the sheet to produce a blank being performed to provide the ornamental pattern on the side which has the copper face.
References Cited (Backward Citations)
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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) | 1985-09-06 | 1986-03-08 | 1986-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-06 | 1990-03-08 | 1990-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-06 | 1994-03-08 | 1994-09-07 | $7700.00 | Window Closed / Lapsed |