US3314047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Warning devices for motor vehicle brake systems
Assignee: Motors Liquidation Co
•
Filing: 1964-07-16
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Granted: 1967-04-11
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Expires: 1984-07-16
Abstract
No abstract record available.
Inventors
- 👤 Zincke Helmut
- 👤 Koliander Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:26
CPC Classifications
B; B60; B60T; B60T17/00; B60T17/18; B60T17/22; B60T17/226; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/265; Y10T137/2663
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A BRAKE SYSTEM WARNING DEVICE FOR MONITORING PRESSURES IN A PAIR OF HYDRAULIC CIRCUITS OF A FLUID-OPERABLE BRAKE SYSTEM FOR A MOTOR VEHICLE, COMPRISING A HOUSING, A PAIR OF COAXIALLY SPACED ANNULAR PIVOT EDGES OF EQUAL DIAMETER PROJECTING FROM OPPOSED INTERNAL FACES OF THE HOUSING, A DIAPHRAGM WHICH IS OF LARGER DIAMETER THAN THE PAIR OF ANNULAR PIVOT EDGES AND AND IS CLAMPED BY SAID PIVOT EDGES COAXIALLY THEREBETWEEN, CONNECTING MEANS EXTENDING FROM THE INTERIOR OF SAID HOUSING FOR CONNECTING EACH SIDE OF SAID DIAPHARGM TO A RESPECTIVE ONE OF SAID PAIR OF HYDRAULIC CIRCUITS, A SWITCH CONTACT MEMBER ENGAGEABLE BY A RIM PORTION OF SAID DIAPHRAGM WHEN THE DIAPHRAGM RESPONDS TO DISTURBANCE OF SAID PRESSURE DIFFERENTIAL, AND AN ELECTRICAL WARNING CIRCUIT CONNECTED TO SAID SWITCH CONTACT MEMBER TO PROVIDE A WARNING SIGNAL WHEN SAID RIM PORTION OF SAID DIAPHRAGM ENGAGES SAID SWITCH CONTACT MEMBER.
Claim 2
Dependent Claim
145 words
A BRAKE SYSTEM WARNING DEVICE FOR MONITORING PRESSURES IN A PAIR OF HYDRAULIC CIRCUITS OF A FLUID-OPERABLE BRAKE SYSTEM FOR A MOTOR VEHICLE, COMPRISING A HOUSING, A PAIR OF COAXIALLY SPACED ANNULAR PIVOT EDGES OF EQUAL DIAMETER PROJECTING FROM OPPOSED INTERNAL FACES OF THE HOUSING, A DIAPHRAGM WHICH IS OF LARGER DIAMETER THAN THE PAIR OF ANNULAR PIVOT EDGES AND AND IS CLAMPED BY SAID PIVOT EDGES COAXIALLY THEREBETWEEN, CONNECTING MEANS EXTENDING FROM THE INTERIOR OF SAID HOUSING FOR CONNECTING EACH SIDE OF SAID DIAPHARGM TO A RESPECTIVE ONE OF SAID PAIR OF HYDRAULIC CIRCUITS, A SWITCH CONTACT MEMBER ENGAGEABLE BY A RIM PORTION OF SAID DIAPHRAGM WHEN THE DIAPHRAGM RESPONDS TO DISTURBANCE OF SAID PRESSURE DIFFERENTIAL, AND AN ELECTRICAL WARNING CIRCUIT CONNECTED TO SAID SWITCH CONTACT MEMBER TO PROVIDE A WARNING SIGNAL WHEN SAID RIM PORTION OF SAID DIAPHRAGM ENGAGES SAID SWITCH CONTACT MEMBER.
References Cited (Backward Citations)
US3011595A
Cited
US3212826A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-10 | 1970-10-10 | 1971-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-10 | 1974-10-10 | 1975-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-10 | 1978-10-10 | 1979-04-11 | $7700.00 | Window Closed / Lapsed |