US3345998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety check valve
Assignee: Individual
•
Filing: 1965-02-19
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Granted: 1967-10-10
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Expires: 1985-02-19
Abstract
No abstract record available.
Inventors
- 👤 Gianni A Dotto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:02
CPC Classifications
B; B60; B60T; B60T11/00; B60T11/10; B60T11/28; B60T11/32; B60T11/323; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/265; Y10T137/2655
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A SAFETY DEVICE FOR A BRAKE SYSTEM OF A VEHICLE LOCATED BETWEEN MASTER CYLINDER MEANS AND FRONT AND REAR BRAKE LINES COMPRISING HOUSING MEANS INCLUDING A BORE TERMINATING IN OUTLET PORTS, ONE OF SAID OUTLET PORTS ADAPTED TO COMMUNICATE WITH A FRONT BRAKE LINE AND ANOTHER OF SAID OUTLET PORTS ADAPTED TO COMMUNICATE WITH A REAR BRAKE LINE, AN INLET PORT DEFINED BY SAID HOUSING SAID INLET PORT CONNECTED TO MASTER CYLINDER MEANS, VALVE MEANS INCLUDING A PASSAGEWAY TERMINATING IN PORTS SLIDABLY INTER-FITTING WITH SAID BORE AND ADPATED TO DEFINE SUBCHAMBERS COMMUNICATING WITH SAID OUTLET PORTS WHEN SAID VALVE MEANS IS IN A NORMAL POSITION, SAID VALVE MEANS INCLUDING FIRST ONE-WAY VALVE MEANS PERMITTING FLUID FLOW FROM SAID INLET PORT TO SAID OUTLET PORTS THROUGH SAID SUBCHAMBERS AS PRESSURE IS INCREASED IN SAID INLET PORT AND SECOND ONE-WAY VALVE MEANS IN SAID PASSAGEWAY
Claim 2
Dependent Claim
143 words
A SAFETY DEVICE FOR A BRAKE SYSTEM OF A VEHICLE LOCATED BETWEEN MASTER CYLINDER MEANS AND FRONT AND REAR BRAKE LINES COMPRISING HOUSING MEANS INCLUDING A BORE TERMINATING IN OUTLET PORTS, ONE OF SAID OUTLET PORTS ADAPTED TO COMMUNICATE WITH A FRONT BRAKE LINE AND ANOTHER OF SAID OUTLET PORTS ADAPTED TO COMMUNICATE WITH A REAR BRAKE LINE, AN INLET PORT DEFINED BY SAID HOUSING SAID INLET PORT CONNECTED TO MASTER CYLINDER MEANS, VALVE MEANS INCLUDING A PASSAGEWAY TERMINATING IN PORTS SLIDABLY INTER-FITTING WITH SAID BORE AND ADPATED TO DEFINE SUBCHAMBERS COMMUNICATING WITH SAID OUTLET PORTS WHEN SAID VALVE MEANS IS IN A NORMAL POSITION, SAID VALVE MEANS INCLUDING FIRST ONE-WAY VALVE MEANS PERMITTING FLUID FLOW FROM SAID INLET PORT TO SAID OUTLET PORTS THROUGH SAID SUBCHAMBERS AS PRESSURE IS INCREASED IN SAID INLET PORT AND SECOND ONE-WAY VALVE MEANS IN SAID PASSAGEWAY
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) | 1970-10-09 | 1971-04-10 | 1971-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-09 | 1975-04-10 | 1975-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-09 | 1979-04-10 | 1979-10-10 | $7700.00 | Window Closed / Lapsed |