Patent US4167233A successfully refreshed from Google Patents.
US4167233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Baking pan
Assignee: EKCO/GLACO Inc
•
Filing: 1977-06-27
•
Granted: 1979-09-11
•
Expires: 1997-06-27
Abstract
Abstract A baking pan comprising a bottom wall and side walls formed from a single blank of sheet metal having smooth inner and outer wall surfaces and providing corners connecting the adjacent side walls which are substantially thicker than the side walls. The terminal portions of the side walls remote from the bottom wall having flange portions formed to impart rigidity to the pan and provide securement means to other pans when positioned in a side-by-side relationship. A circumferential band encompassing multiple pans in a side-by-side relationship to complete the assembly of pans.
Inventors
- 👤 Wilbert K. Hare
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:30
CPC Classifications
A; A21; A21B; A21B3/00; A21B3/13; A21B3/133
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
191 words
A bake pan formed from a single blank of sheet metal having a bottom wall of rectangular plan and side walls of equal and uniform thickness extending upwardly from said bottom wall, adjacent side walls being joined by an integral corner post formed to provide a columnar mass of metal lying within the point of intersection of the imaginary planes of the outer surfaces of said adjacent side walls, each corner post having a smooth inner curved surface and a smooth outer curved surface and having a cross-section configuration of elliptical shape wherein the two ends defining the extent of the inner curved surface of each corner post form definable junctures with the inner surface of each adjacent side wall and the two ends defining the extent of the outer curved surface of each corner post form definable junctures with the outer surface of each adjacent side wall, said inner and outer surfaces of the corner post defining a corner post thickness at the crossing of the minor axis of said elliptical shaped corner post, and said thickness being at least more than twice the thickness of an adjacent side wall.
Claim 2
Dependent Claim
191 words
A bake pan formed from a single blank of sheet metal having a bottom wall of rectangular plan and side walls of equal and uniform thickness extending upwardly from said bottom wall, adjacent side walls being joined by an integral corner post formed to provide a columnar mass of metal lying within the point of intersection of the imaginary planes of the outer surfaces of said adjacent side walls, each corner post having a smooth inner curved surface and a smooth outer curved surface and having a cross-section configuration of elliptical shape wherein the two ends defining the extent of the inner curved surface of each corner post form definable junctures with the inner surface of each adjacent side wall and the two ends defining the extent of the outer curved surface of each corner post form definable junctures with the outer surface of each adjacent side wall, said inner and outer surfaces of the corner post defining a corner post thickness at the crossing of the minor axis of said elliptical shaped corner post, and said thickness being at least more than twice the thickness of an adjacent side wall.
References Cited (Backward Citations)
US1462640A
Cited
US1608046A
Cited
US2066025A
Cited
US2143554A
Cited
US2237535A
Cited
US2691214A
Cited
US2773624A
Cited
US3219229A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-09-10 | 1983-03-12 | 1983-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-09-10 | 1987-03-12 | 1987-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-09-10 | 1991-03-12 | 1991-09-11 | $7700.00 | Window Closed / Lapsed |