US3336798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Storm warning device
Assignee: Individual
•
Filing: 1964-08-13
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Granted: 1967-08-22
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Expires: 1984-08-13
Abstract
No abstract record available.
Inventors
- 👤 Twohey Lewis West
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:54
CPC Classifications
G; G01; G01L; G01L19/00; G01L19/08; G01L19/12; G01L19/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A STORM WARNING DEVICE COMPRISING: A HOUSING; A PLURALITY OF CONCENTRICALLY ARRANGED ANNULAR CHAMBERS DEFINED BY WALLS WITHIN SAID HOUSING; MEANS FOR MAINTAINING THE INTERIOR OF SAID CHAMBERS AT A PREDETERMINED PRESSURE GREATER THAN AMBIENT; MEANS FOR EXPOSING THE EXTERIOR OF SAID CHAMBER TO AMBIENT PRESSURE; A PIVOTABLE DOOR IN A WALL OF EACH OF SAID CHAMBERS, EACH SAID DOOR HAVING A DIFFERENT SURFACE AREA AND BEING RESPONSIVE TO VARYING PRESSURE DIFFERENTIALS, SAID PRESSURE DIFFERENTIALS BEING BETWEEN THE INTERIOR AND EXTERIOR PRESSURE OF SAID CHAMBER; AND SIGNAL MEANS ACTUATED BY OPENING OF EACH SAID DOOR TO INDICATE SAID PREDETERMINED PRESSURE DIFFERENTIAL.
Claim 2
Dependent Claim
101 words
A STORM WARNING DEVICE COMPRISING: A HOUSING; A PLURALITY OF CONCENTRICALLY ARRANGED ANNULAR CHAMBERS DEFINED BY WALLS WITHIN SAID HOUSING; MEANS FOR MAINTAINING THE INTERIOR OF SAID CHAMBERS AT A PREDETERMINED PRESSURE GREATER THAN AMBIENT; MEANS FOR EXPOSING THE EXTERIOR OF SAID CHAMBER TO AMBIENT PRESSURE; A PIVOTABLE DOOR IN A WALL OF EACH OF SAID CHAMBERS, EACH SAID DOOR HAVING A DIFFERENT SURFACE AREA AND BEING RESPONSIVE TO VARYING PRESSURE DIFFERENTIALS, SAID PRESSURE DIFFERENTIALS BEING BETWEEN THE INTERIOR AND EXTERIOR PRESSURE OF SAID CHAMBER; AND SIGNAL MEANS ACTUATED BY OPENING OF EACH SAID DOOR TO INDICATE SAID PREDETERMINED PRESSURE DIFFERENTIAL.
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) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |