Patent US3558002A successfully refreshed from Google Patents.
US3558002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Baking pan having top reinforcing flanges
Assignee: Electrolux AB
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Filing: 1969-02-26
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Granted: 1971-01-26
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Expires: 1989-02-26
Abstract
Abstract This invention relates to an open top multisided baking pan having a bottom and upstanding sidewalls and a flat top flange which flares outward at the open top of the pan, the top flange including straight sections of uniform width and corners therebetween. A rim depends downward from the outer peripheral edge of the top flange. From the bottom of the rim straight sections of a bottom flange extend inward toward the sidewalls, the adjacent ends of such straight sections of the bottom flange being separated from one another at regions beneath the corners of the top flange. Each corner of the top flange is stiffened and reinforced by a zone thereof which extends outward beyond an arc of a circle connecting the outer peripheral edges of adjacent straight sections of the top flange and having the same center of radius of curvature as that of the inner peripheral edge of the corner of the top flange. Also, the ends of adjacent straight sections of the bottom flange are disposed beneath the outward extending zone of each corner of the top flange to further stiffen and reinforce the top flange at each corner. Alternatively, the width of the top flange at the corners is greater than at the straight sections, the radius of curvature of the outer peripheral edge of each corner of the top flange being less than the radius of curvature of its inner peripheral edge.
Inventors
- 👤 Nils Kauri Lindgren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:32
CPC Classifications
A; A47; A47J; A47J37/00; A47J37/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
232 words
An open top multisided baking pan having: a bottom and upstanding sidewalls and a top flat flange which flares outward at the open top thereof, b. said top flange including straight sections of uniform width and corners therebetween, c. a rim which extends about the straight sections and corners of said top flange and depends vertically downward from the outer peripheral edge thereof, d. a bottom flange having straight sections which extend inward toward said sidewalls from the bottom of said rim at the straight sections of said top flange and terminate at regions removed from said sidewalls, the straight sections of said bottom flange being separated from one another at the corners of the pan at regions beneath the corners of said top flange, e. the center of the radius of curvature of said rim at the corners of said top flange being located on said top flange, f. the width of said top flange at the corners being greater than at the straight sections, g. the radius of curvature of said rim at each corner of said top flange being less than the radius of curvature of each corner at its inner peripheral edge, and h. the gap between the inner corners of each pair of adjacent straight sections of said bottom flange being shorter than the radius of curvature of said rim at each corner of said top flange.
Claim 2
Dependent Claim
232 words
An open top multisided baking pan having: a bottom and upstanding sidewalls and a top flat flange which flares outward at the open top thereof, b. said top flange including straight sections of uniform width and corners therebetween, c. a rim which extends about the straight sections and corners of said top flange and depends vertically downward from the outer peripheral edge thereof, d. a bottom flange having straight sections which extend inward toward said sidewalls from the bottom of said rim at the straight sections of said top flange and terminate at regions removed from said sidewalls, the straight sections of said bottom flange being separated from one another at the corners of the pan at regions beneath the corners of said top flange, e. the center of the radius of curvature of said rim at the corners of said top flange being located on said top flange, f. the width of said top flange at the corners being greater than at the straight sections, g. the radius of curvature of said rim at each corner of said top flange being less than the radius of curvature of each corner at its inner peripheral edge, and h. the gap between the inner corners of each pair of adjacent straight sections of said bottom flange being shorter than the radius of curvature of said rim at each corner of said top flange.
Claim 3
Dependent Claim
233 words
An open top multisided baking pan having: a. a bottom and upstanding sidewalls and a top flat flange which flares outward at the open top thereof, b. said top flange including straight sections of uniform width and corners therebetween, c. a rim which depends vertically downward from the outer peripheral edge of said top flange, d. a bottom flange having straight sections which extend inward toward said sidewalls from the bottom of said rim at the straight sections of said top flange, the straight sections of said bottom flange being separated from one another at the corners of the pan at regions beneath the corners of said top flange, e. the center of the radiUs of curvature of the outer peripheral edge of said top flange at each corner thereof being located on said top flange, f. the center of the radius of curvature of the outer peripheral edge of said top flange at each corner thereof being located at a corner of said top flange bridging and connecting adjacent straight sections of said top flange, and g. the end portions of each pair of adjacent straight sections of said bottom flange terminating at a region beneath a corner of said top flange which is between the outer peripheral edge of said top flange at the corner and the center of the radius of curvature of the outer peripheral edge of the corner.
Claim 4
Dependent Claim
233 words
An open top multisided baking pan having: a. a bottom and upstanding sidewalls and a top flat flange which flares outward at the open top thereof, b. said top flange including straight sections of uniform width and corners therebetween, c. a rim which depends vertically downward from the outer peripheral edge of said top flange, d. a bottom flange having straight sections which extend inward toward said sidewalls from the bottom of said rim at the straight sections of said top flange, the straight sections of said bottom flange being separated from one another at the corners of the pan at regions beneath the corners of said top flange, e. the center of the radiUs of curvature of the outer peripheral edge of said top flange at each corner thereof being located on said top flange, f. the center of the radius of curvature of the outer peripheral edge of said top flange at each corner thereof being located at a corner of said top flange bridging and connecting adjacent straight sections of said top flange, and g. the end portions of each pair of adjacent straight sections of said bottom flange terminating at a region beneath a corner of said top flange which is between the outer peripheral edge of said top flange at the corner and the center of the radius of curvature of the outer peripheral edge of the corner.
Claim 5
Dependent Claim
184 words
An open top multisided baking pan having: a. a bottom and upstanding sidewalls and a top flat flange which flares outward at the open top thereof, b. said top flange including straight sections of uniform width and corners therebetween, c. a rim which depends vertically downward from the outer peripheral edge of said top flange, d. a bottom flange having straight sections which extend inward toward said sidewalls from the bottom of said rim at the straight sections of said top flange, the straight sections of said bottom flange being separated from one another at the corners of the pan at regions beneath the corners of said top flange, and e. each corner of said top flange being stiffened and reinforced by a zone thereof which extends outward beyond an arc of a circle connecting the outer peripheral edges of adjacent straight sections of said top flange, and f. the ends of adjacent straight sections of said bottom flange being disposed beneath said outward extending zone of each corner of said top flange to further stiffen and reinforce said top flange at each corner.
Claim 6
Dependent Claim
184 words
An open top multisided baking pan having: a. a bottom and upstanding sidewalls and a top flat flange which flares outward at the open top thereof, b. said top flange including straight sections of uniform width and corners therebetween, c. a rim which depends vertically downward from the outer peripheral edge of said top flange, d. a bottom flange having straight sections which extend inward toward said sidewalls from the bottom of said rim at the straight sections of said top flange, the straight sections of said bottom flange being separated from one another at the corners of the pan at regions beneath the corners of said top flange, and e. each corner of said top flange being stiffened and reinforced by a zone thereof which extends outward beyond an arc of a circle connecting the outer peripheral edges of adjacent straight sections of said top flange, and f. the ends of adjacent straight sections of said bottom flange being disposed beneath said outward extending zone of each corner of said top flange to further stiffen and reinforce said top flange at each corner.
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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |