US3208446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oven observation door
Assignee: Westinghouse Electric Corp
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Filing: 1962-05-22
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Granted: 1965-09-28
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Expires: 1982-05-22
Abstract
No abstract record available.
Inventors
- 👤 Leland G Hopkins
- 👤 Wesley E Shreffler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:28
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/02; F24C15/04; Y; Y10; Y10S; Y10S52/00; Y10S52/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
195 words
IN A OVEN OBSERVATION DOOR HAVING A PERIPHERAL POLYGONAL FRAME AND HAVING AN OUTER PANE AND A PARALLEL INNER PANE SO FRAMED THEREBY THAT THE SIGHT OF THE OUTER PANE OVERLIES THE SIGHT OF THE INNER PANE, IMPROVED MEANS FOR LOCATING THE PANES IN FIXED RELATION TO ONE ANOTHER WITHIN THE FRAME AND COMPRISING STRIP-LIKE SPACER MEMBERS LOCATED BETWEEN THE PANES AND ADJACENT THERETO AND TO THE PERIPHERAL POLYGONAL FRAME, THEREBY DEFINING THE SIGHTS OF THE RESPECTIVE PANES, WITH THE EXPOSED FACES OF THE SPACER MEMBERS FLARING OUTWARDLY FROM THE INNER PANE TO THE OUTER PANE, THUS RENDERING THE OUTER SIGHT LARGER THAN THE INNER SIGHT, EACH CORNER OF THE FRAME INCLUDING THE JUNCTION OF TWO OF THE STRIP-LIKE SPACER MEMBERS, THE END OF THE FLARING FACE OF ONE THEREOF BEING ANGLED AT APPROXIMATELY HALF THE ANGLE DEFINED BY SAID TWO STRIP-LIKE SPACER MEMBERS AND OVERLYING THE END OF THE OTEHR, SIMULATING A MITERED JOINT, AND CORNER SUPPORTS LOCATED BETWEEN THE FRAME AND THE SPACER MEMBERS AND SECURED TO THE FRAME, EACH CORNER OF THE FRAME HAVING ONE OF THE CORNER SUPPORTS SECURED THERETO, THE CORNER SUPPORT EXTENDING ADJACENT THE PERIPHERAL EDGE OF AT LEAST
Claim 2
Dependent Claim
195 words
IN A OVEN OBSERVATION DOOR HAVING A PERIPHERAL POLYGONAL FRAME AND HAVING AN OUTER PANE AND A PARALLEL INNER PANE SO FRAMED THEREBY THAT THE SIGHT OF THE OUTER PANE OVERLIES THE SIGHT OF THE INNER PANE, IMPROVED MEANS FOR LOCATING THE PANES IN FIXED RELATION TO ONE ANOTHER WITHIN THE FRAME AND COMPRISING STRIP-LIKE SPACER MEMBERS LOCATED BETWEEN THE PANES AND ADJACENT THERETO AND TO THE PERIPHERAL POLYGONAL FRAME, THEREBY DEFINING THE SIGHTS OF THE RESPECTIVE PANES, WITH THE EXPOSED FACES OF THE SPACER MEMBERS FLARING OUTWARDLY FROM THE INNER PANE TO THE OUTER PANE, THUS RENDERING THE OUTER SIGHT LARGER THAN THE INNER SIGHT, EACH CORNER OF THE FRAME INCLUDING THE JUNCTION OF TWO OF THE STRIP-LIKE SPACER MEMBERS, THE END OF THE FLARING FACE OF ONE THEREOF BEING ANGLED AT APPROXIMATELY HALF THE ANGLE DEFINED BY SAID TWO STRIP-LIKE SPACER MEMBERS AND OVERLYING THE END OF THE OTEHR, SIMULATING A MITERED JOINT, AND CORNER SUPPORTS LOCATED BETWEEN THE FRAME AND THE SPACER MEMBERS AND SECURED TO THE FRAME, EACH CORNER OF THE FRAME HAVING ONE OF THE CORNER SUPPORTS SECURED THERETO, THE CORNER SUPPORT EXTENDING ADJACENT THE PERIPHERAL EDGE OF AT LEAST
References Cited (Backward Citations)
US1968890A
Cited
US1994022A
Cited
US2173664A
Cited
US2513202A
Cited
US2536956A
Cited
US2810460A
Cited
US3034612A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |