US3373610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sight window for machines and containers
Assignee: TEPRO TECHNICAL PRODUCTION Co Ltd
•
Filing: 1964-03-06
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Granted: 1968-03-19
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Expires: 1984-03-06
Abstract
No abstract record available.
Inventors
- 👤 Stieber Ortwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:43
CPC Classifications
F; F16; F16N; F16N19/00; F16N19/003; G; G01; G01F; G01F23/00; G01F23/02; G02; G02B; G02B7/00; G02B7/007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
FOR INSERTION INTO AN OPENING OF A WALL, ESPECIALLY OF A CONTAINER: LIGHT TRANSPARENT DISC MEANS HAVING A PERIPHERAL SURFACE PORTION PROVIDED WITH PERIPHERAL GROOVE MEANS, ONE SIDE OF SAID DISC MEANS BEING PROVIDED WITH RADIALLY EXTENDING FLANGE MEANS RADIALLY PROTRUDING BEYOND SAID PERIPHERAL SURFACE PORTION, THE DEPT OF SAID GROOVE MEANS INCREASING IN THE DIRECTION TOWARD SAID FLANGE MEANS, AND ELASTICALLY DEFORMABLE SEALING RING MEANS ARRANGED IN SAID GROOVE MEANS AND IN NON-COMPRESSED CONDITION HAVING AN OUTER DIAMETER IN EXCESS OF THE OUTER DIAMETER OF SAID PERIPHERAL SURFACE PORTION, SAID SEALING RING MEANS HAVING AN INNER DIAMETER SO AS TIGHTLY TO ENGAGE THE BOTTOM OF SAID GROOVE MEANS, THE WIDTH OF SAID GROOVE MEANS EXCEEDING THE EXTENSION OF SAID RING MEANS IN THE DIRECTION OF THE WIDTH OF SAID GROOVE MEANS.
Claim 2
Dependent Claim
132 words
FOR INSERTION INTO AN OPENING OF A WALL, ESPECIALLY OF A CONTAINER: LIGHT TRANSPARENT DISC MEANS HAVING A PERIPHERAL SURFACE PORTION PROVIDED WITH PERIPHERAL GROOVE MEANS, ONE SIDE OF SAID DISC MEANS BEING PROVIDED WITH RADIALLY EXTENDING FLANGE MEANS RADIALLY PROTRUDING BEYOND SAID PERIPHERAL SURFACE PORTION, THE DEPT OF SAID GROOVE MEANS INCREASING IN THE DIRECTION TOWARD SAID FLANGE MEANS, AND ELASTICALLY DEFORMABLE SEALING RING MEANS ARRANGED IN SAID GROOVE MEANS AND IN NON-COMPRESSED CONDITION HAVING AN OUTER DIAMETER IN EXCESS OF THE OUTER DIAMETER OF SAID PERIPHERAL SURFACE PORTION, SAID SEALING RING MEANS HAVING AN INNER DIAMETER SO AS TIGHTLY TO ENGAGE THE BOTTOM OF SAID GROOVE MEANS, THE WIDTH OF SAID GROOVE MEANS EXCEEDING THE EXTENSION OF SAID RING MEANS IN THE DIRECTION OF THE WIDTH OF SAID GROOVE MEANS.
References Cited (Backward Citations)
CA490441A
Cited
US3123971A
Cited
US1865034A
Cited
GB514133A
Cited
US2681034A
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US2942469A
Cited
US2800869A
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US3170326A
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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) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |