US3351730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Energy seal for microwave ovens
Assignee: US Philips Corp
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Filing: 1965-03-09
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Granted: 1967-11-07
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Expires: 1985-03-09
Abstract
No abstract record available.
Inventors
- 👤 Pahlman Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:30
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/76; H05B6/763; H05K; H05K9/00; H05K9/0007; H05K9/0015
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A MICROWAVE OVEN COMPRISING A METALLIC WALLED HEATING CHAMBER HAVING AN ACCESS APERTURE IN ONE WALL OF SAID CHAMBER, A METALLIC DOOR ADJACENT TO AND OVERLAPPING SAID APERTURE TO PROVIDE A PAIR OF SPACED CONFRONTING PLANAR SURFACES DEFINING A GAP ABOUT THE PERIPHERY OF SAID APERTURE IN THE CLOSED POSITION OF THE DOOR, SAID ONE WALL HAVING A RECESS THEREIN EXTENDING ABOUT THE PERIPHERY OF SAID ACCESS APERTURE, SAID DOOR HAVING A RECESS THEREIN EXTENDING ABOUT THE PERIPHERY OF THE SURFACE FACING SAID WALL AND IN CONFRONTING RELATIONSHIP WITH SAID WALL RECESS, THE DEPTH OF EACH OF SAID RECESSES BEING APPROXIMATELY ONE-FOURTH WAVELENGTH AT THE FREQUENCY OF THE OVEN MICROWAVE ENERGY.
Claim 2
Dependent Claim
111 words
A MICROWAVE OVEN COMPRISING A METALLIC WALLED HEATING CHAMBER HAVING AN ACCESS APERTURE IN ONE WALL OF SAID CHAMBER, A METALLIC DOOR ADJACENT TO AND OVERLAPPING SAID APERTURE TO PROVIDE A PAIR OF SPACED CONFRONTING PLANAR SURFACES DEFINING A GAP ABOUT THE PERIPHERY OF SAID APERTURE IN THE CLOSED POSITION OF THE DOOR, SAID ONE WALL HAVING A RECESS THEREIN EXTENDING ABOUT THE PERIPHERY OF SAID ACCESS APERTURE, SAID DOOR HAVING A RECESS THEREIN EXTENDING ABOUT THE PERIPHERY OF THE SURFACE FACING SAID WALL AND IN CONFRONTING RELATIONSHIP WITH SAID WALL RECESS, THE DEPTH OF EACH OF SAID RECESSES BEING APPROXIMATELY ONE-FOURTH WAVELENGTH AT THE FREQUENCY OF THE OVEN MICROWAVE ENERGY.
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) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |