Patent US3246624A successfully refreshed from Google Patents.
US3246624A
Expired / Lapsed
US
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Pressure indicating device
Assignee: Novo Industrial Corp
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Filing: 1965-02-05
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Granted: 1966-04-19
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Expires: 1985-02-05
Abstract
No abstract record available.
Inventors
- 👤 Wilfred W Lowther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:01
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/02; F02M35/08; F02M35/09; G; G01; G01L; G01L19/00; G01L19/06; G01L19/0618; G01L19/08; G01L19/12; Y; Y10; Y10S; Y10S116/00; Y10S116/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
AN INDICATOR TO REPORT A CERTAIN RESTRICTION CONDITION IN AN AIR CLEANER FOR AN INTERNAL COMBUSTION ENGINE, INCLUDING A HOUSING ADAPTED TO BE COMMUNICATED TO THE AIR INTAKE STREAM OF THE ENGINE DOWNSTREAM FROM THE AIR CLEANER, A DIAPHRAGM ON THE HOUSING OPEN TO THE ATMOSPHERE ON ONE SIDE AND SUBJECT ON THE OTHER SIDE TO THE RESTRICTION IN THE AIR INTAKE STREAM OF THE ENGINE DOWNSTREAM FROM THE AIR CLEANER, THE DIAPHRAGM BEING FLEXIBLE AND EXTENDING OUTWARDLY FROM THE HOUSING IN ITS NORMAL POSITION, BUT BEING ADAPTED TO FLEX INTO THE HOUSING WHEN
Claim 2
Dependent Claim
94 words
AN INDICATOR TO REPORT A CERTAIN RESTRICTION CONDITION IN AN AIR CLEANER FOR AN INTERNAL COMBUSTION ENGINE, INCLUDING A HOUSING ADAPTED TO BE COMMUNICATED TO THE AIR INTAKE STREAM OF THE ENGINE DOWNSTREAM FROM THE AIR CLEANER, A DIAPHRAGM ON THE HOUSING OPEN TO THE ATMOSPHERE ON ONE SIDE AND SUBJECT ON THE OTHER SIDE TO THE RESTRICTION IN THE AIR INTAKE STREAM OF THE ENGINE DOWNSTREAM FROM THE AIR CLEANER, THE DIAPHRAGM BEING FLEXIBLE AND EXTENDING OUTWARDLY FROM THE HOUSING IN ITS NORMAL POSITION, BUT BEING ADAPTED TO FLEX INTO THE HOUSING WHEN
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) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |