Patent US3216525A successfully refreshed from Google Patents.
US3216525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid actuated vibrator
Assignee: IFP Energies nouvelles
•
Filing: 1962-07-23
•
Granted: 1965-11-09
•
Expires: 1982-07-23
Abstract
No abstract record available.
Inventors
- 👤 Fail Jean-Pierre
- 👤 Grau Gerard
- 👤 Lavergne Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:06
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/02; G01V1/133; G01V1/135; G01V1/143; G01V1/155
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
AN ELECTRICALLY CONTROLLED FLUID ACTUATED VIBRATOR COMPRISING A PULSING PLATE POSITIONABLE UPON A SURFACE, A HYDRAULIC JACK COMPRISING TWO CHAMBERS SEPARATED BY PISTON MEANS, AND RESILIENT MEANS MOUNTED UPON SAID PULSING PLATE, A MASS SUBSTANTIALLY HEAVIER THAN SAID PULSING PLATE AND SUPPORTED UPON SAID HYDRAULIC JACK AND SAID RESILIENT MEANS, A SERVODISTRIBUTOR FOR FLUID UNDER PRESSURE OPERATIVELY CONNECTED TO SAID CHAMBERS AND ACTUATED BY AN ELECTRIC CONTROL SIGNAL, A FEEDBACK CIRCUIT INCLUDING PRESSURE-SENSITIVE TRANSDUCER MEANS IN EACH OF SAID CHAMBERS FOR PRODUCING AN ELECTRIC SIGNAL PROPORTIONAL TO THE PRESSURE DIFFERENCE EXERTED ON SAID HYDRAULIC JACK, AND MEANS FOR FEEDING BACK SAID LATTER SIGNAL TO THE ELECTRIC CONTROL SIGNAL ACTUATING SAID HYDRAULIC JACK.
Claim 2
Dependent Claim
112 words
AN ELECTRICALLY CONTROLLED FLUID ACTUATED VIBRATOR COMPRISING A PULSING PLATE POSITIONABLE UPON A SURFACE, A HYDRAULIC JACK COMPRISING TWO CHAMBERS SEPARATED BY PISTON MEANS, AND RESILIENT MEANS MOUNTED UPON SAID PULSING PLATE, A MASS SUBSTANTIALLY HEAVIER THAN SAID PULSING PLATE AND SUPPORTED UPON SAID HYDRAULIC JACK AND SAID RESILIENT MEANS, A SERVODISTRIBUTOR FOR FLUID UNDER PRESSURE OPERATIVELY CONNECTED TO SAID CHAMBERS AND ACTUATED BY AN ELECTRIC CONTROL SIGNAL, A FEEDBACK CIRCUIT INCLUDING PRESSURE-SENSITIVE TRANSDUCER MEANS IN EACH OF SAID CHAMBERS FOR PRODUCING AN ELECTRIC SIGNAL PROPORTIONAL TO THE PRESSURE DIFFERENCE EXERTED ON SAID HYDRAULIC JACK, AND MEANS FOR FEEDING BACK SAID LATTER SIGNAL TO THE ELECTRIC CONTROL SIGNAL ACTUATING SAID HYDRAULIC JACK.
References Cited (Backward Citations)
US1753368A
Cited
US2745507A
Cited
US2792804A
Cited
US2910134A
Cited
US3024861A
Cited
US3009447A
Cited
US3106982A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |