US4628694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fabricated liner article and method
Assignee: General Electric Co
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Filing: 1983-12-19
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Granted: 1986-12-16
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Expires: 2003-12-19
Abstract
Abstract A method of fabricating sheet metal panels and the article produced thereby. According to one form, the method of fabrication includes the steps of providing a panel of sheet metal, perforating the panel to provide a plurality of holes, forming the panel into a preselected curve about a longitudinal centerline, forming the leading edge portion of the panel into a front flange, forming a shoulder in the panel centered on the holes and extending perpendicularly from a surface thereof, bending an outer portion of the shoulder into a lip, and bonding the portions of the panel comprising the shoulder and lip.
Inventors
- 👤 James S. Kelm
- 👤 Arthur L. Ludwig
- 👤 Harvey M. Maclin
- 👤 Steven K. Roggenkamp
- 👤 Thomas G. Wakeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:26
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/002; B; B21; B21D; B21D35/00; F05; F05B; F05B2260/00; F05B2260/20; F05B2260/201; F23R2900/00; F23R2900/00018
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
99 words
A fabricated sheet metal panel comprising: a plate member having first and second oppositely facing surfaces bounded by a leading edge, a trailing edge and first and second opposing side edges; said plate member further comprising an integral shoulder spaced from and extending substantially parallel to said trailing edge thereof; said shoulder comprising substantially abutting, folded sections of said plate member and including a base extending from said first surface and a lip extending from an outer end of said base portion, said folded sections having abutting surfaces which comprise portions of said second surface of said plate member.
Claim 2
Dependent Claim
99 words
A fabricated sheet metal panel comprising: a plate member having first and second oppositely facing surfaces bounded by a leading edge, a trailing edge and first and second opposing side edges; said plate member further comprising an integral shoulder spaced from and extending substantially parallel to said trailing edge thereof; said shoulder comprising substantially abutting, folded sections of said plate member and including a base extending from said first surface and a lip extending from an outer end of said base portion, said folded sections having abutting surfaces which comprise portions of said second surface of said plate member.
Claim 3
Dependent Claim
27 words
The panel according to claim 1 further comprising a front flange extending substantially perpendicularly from said second surface of said plate member adjacent said leading edge thereof.
Claim 4
Dependent Claim
37 words
The panel according to claim 2 further comprising a plurality of cooling holes disposed in said plate member and being spaced from said front flange and disposed along a line substantially parallel to said leading edge thereof.
Claim 5
Dependent Claim
37 words
The panel according to claim 1 further comprising a plurality of depressions disposed in said first surface of said plate member and being spaced from and extending along a line substantially parallel to said leading edge thereof.
Claim 6
Dependent Claim
66 words
The panel according to claim 1 wherein said shoulder further comprises a plurality of spaced notches therein which divide said lip into a plurality of lip portions and which divide said outer end of said base portion into a plurality of base portions, said base portions extending substantially perpendicularly from said first surface and said lip portions extending toward said leading edge of said plate member.
Claim 7
Dependent Claim
18 words
The panel according to claim 1 wherein said plate member is frusto-conical and said second surface is concave.
Claim 8
Dependent Claim
33 words
The panel according to claim 1 wherein said plate member further comprises a circular hole disposed near the center thereof and a tubular member fixedly secured thereto and aligned in said circular hole.
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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) | 1989-12-15 | 1990-06-16 | 1990-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-15 | 1994-06-16 | 1994-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-15 | 1998-06-16 | 1998-12-16 | $7700.00 | Window Closed / Lapsed |