US3089734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency operated brake anti-skid device
Assignee: Old Carco LLC
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Filing: 1961-01-23
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Granted: 1963-05-14
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Expires: 1981-01-23
Abstract
No abstract record available.
Inventors
- 👤 Jankus Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:39
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/32; B60T8/321; B60T8/3295
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
IN A HYDRAULIC BRAKING SYSTEM FOR AUTOMOTIVE VEHICLE HAVING HYDRAULIC CYLINDER ACTUATED WHEEL BRAKES AND A MANUALLY OPERABLE PRIMARY PRESSURE DEVELOPING MECHANISM OPERATIVELY CONNECTED TO THE BRAKE CYLINDERS, A SECONDARY HYDRAULIC CYLINDER, A SECONDARY SOURCE OF PRESSURE, SAID SECONDARY CYLINDER HAVING ONE SIDE CONNECTED TO SAID PRIMARY MECHANISM AND THE OTHER SIDE TO SAID SECONDARY SOURCE OF PRESSURE THROUGH CONDUIT MEANS, SOLENOID VALVE MEANS IN SAID CONDUIT MEANS FOR DUMPING THE PRESSURE FROM SAID SECONDARY SOURCE IN RESPONSE TO AN ELECTRICAL SIGNAL, OSCILLATOR MEANS FOR CYCLICING SAID ELECTRICAL SIGNAL, ACCELEROMOTER MEANS OPERATIVLEY CONNECTED TO SAID WHEELS FOR MEASURING THE DECELERATION THEREOF, ELECTRICAL CIRCUIT MEANS ELECTRICALLY CONNECTING SAID ACCELEROMETER MEANS TO SAID OSCILLATOR MEANS, AND ELECTRICAL SWITCHING MEANS IN SAID CIRCUIT MEANS ACTUATED BY SAID ACCELEROMETER FOR COMPLETING SAID CIRCUIT MEANS AT A PREDETERMINED DECELERATION OF SAID WHEELS.
Claim 2
Dependent Claim
137 words
IN A HYDRAULIC BRAKING SYSTEM FOR AUTOMOTIVE VEHICLE HAVING HYDRAULIC CYLINDER ACTUATED WHEEL BRAKES AND A MANUALLY OPERABLE PRIMARY PRESSURE DEVELOPING MECHANISM OPERATIVELY CONNECTED TO THE BRAKE CYLINDERS, A SECONDARY HYDRAULIC CYLINDER, A SECONDARY SOURCE OF PRESSURE, SAID SECONDARY CYLINDER HAVING ONE SIDE CONNECTED TO SAID PRIMARY MECHANISM AND THE OTHER SIDE TO SAID SECONDARY SOURCE OF PRESSURE THROUGH CONDUIT MEANS, SOLENOID VALVE MEANS IN SAID CONDUIT MEANS FOR DUMPING THE PRESSURE FROM SAID SECONDARY SOURCE IN RESPONSE TO AN ELECTRICAL SIGNAL, OSCILLATOR MEANS FOR CYCLICING SAID ELECTRICAL SIGNAL, ACCELEROMOTER MEANS OPERATIVLEY CONNECTED TO SAID WHEELS FOR MEASURING THE DECELERATION THEREOF, ELECTRICAL CIRCUIT MEANS ELECTRICALLY CONNECTING SAID ACCELEROMETER MEANS TO SAID OSCILLATOR MEANS, AND ELECTRICAL SWITCHING MEANS IN SAID CIRCUIT MEANS ACTUATED BY SAID ACCELEROMETER FOR COMPLETING SAID CIRCUIT MEANS AT A PREDETERMINED DECELERATION OF SAID WHEELS.
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) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |