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US3147965A Expired / Lapsed US ⏱️ 0.0 years remaining

Vehicle suspension

Assignee: Automobiles Citroen SA
•
Filing: 1960-10-21
•
Granted: 1964-09-08
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Expires: 1980-10-21
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Abstract

No abstract record available.

Inventors

  • 👤 Mercier Pierre Ernest

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 10:59
CPC Classifications
B; B60; B60G; B60G17/00; B60G17/02; B60G17/033; B60G15/00; B60G15/08; B60G15/12; B60G17/015; B60G17/0152; B60G17/04; B60G21/00; B60G21/02; B60G21/06; F; F16; F16F; F16F9/00; F16F9/06; F16F9/08; F16F9/088; F16F9/32; F16F9/48; F16F9/486

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 290 words
A SUSPENSION FOR VEHICLES OR OTHER APPLICATIONS COMPRISING A CYLINDER, A PISTON RECIPROCATING IN SAID CYLINDER FORMING AT LEAST ONE MECHANICALLY DEFORMABLE SPACE CONTAINING A LIQUID, SAID PISTON AND CYLINDER BEING FIXED RESPECTIVELY TO A SUSPENDED MASS AND TO A WHEEL CARRYING ELEMENT, A CHAMBER CONTAINING A LIQUID, MEANS SUBJECTING SAID LIQUID TO AN ELASTIC PRESSURE, MEANS FOR DECANTING THE LIQUID CONTAINED IN SAID CHAMBER SUBJECTED TO AN ELASTIC PRESSURE, A PILOT COMPARTMENT CONTAINING HYDRAULIC ELEMENTS SUBJECTING THE FLUID CONTAINED IN SAID COMPARTMENT TO AN ELASTIC PRESSURE, MEANS FORMING A RESTRICTED COMMUNICATION BETWEEN THE LIQUID OF SAID COMPARTMENT AND THE LIQUID CONTAINED IN ONE OF THE DEFORMABLE SPACES IN SUCH A MANNER THAT THE PRESSURE IN SAID PILOT COMPARTMENT DOES NOT FOLLOW, BECAUSE OF THE RESTRICTED PASSAGE, THE RAPID VARIATIONS OF THE PRESSURE PREVAILING IN THE CHAMBER CONTAINING THE LIQUID SUBJECTED TO AN ELASTIC PRESSURE, DAMPING ELEMENTS INTERPOSED BETWEEN SAID DEFORMABLE SPACE AND THE CHAMBER CONTAINING THE LIQUID SUBJECTED TO AN ELASTIC PRESSURE AND COMPRISING A SLIDE VALVE SUBJECTED ON ONE HAND TO THE DIFFERENCE OF PRESSURE BETWEEN THE DEFORMABLE SPACE AND THE LIQUID OF SAID CHAMBER AND ON THE OTHER HAND OPPOSING THE AVERAGE PRESSURE IN SAID COMPARTMENT, DISCHARGE ORIFICES IN SAID VALVE IN ORDER TO ASSURE A DAMPING BY RESTRICTING THE LIQUID ARRIVING FROM SAID MECHANICALLY DEFORMABLE SPACE AND DIRECTING IT TOWARDS THE LIQUID CONTAINED IN SAID CHAMBER AND VICE VERSA, A PAIR OF FLAP VALVES LOCATED BETWEEN SAID PILOT COMPARTMENT AND SAID MECHANICALLY DEFORMABLE SPACE ELIMINATING THE EFFECTS OF THE DAMPING WHEN THE SUSPENSION ELEMENT BY EXTENSION OR CONTRACTION IS DISPLACED FROM ITS EQUILIBRIUM POSITION AND ALLOWING THE DAMPING ELEMENTS TO ACT WHEN SAID SUSPENSION ELEMENTS COMES BACK TO ITS POSITION OF EQUILIBRIUM BY CONTRACTION OR EXTENSION.
Claim 2
Dependent Claim 290 words
A SUSPENSION FOR VEHICLES OR OTHER APPLICATIONS COMPRISING A CYLINDER, A PISTON RECIPROCATING IN SAID CYLINDER FORMING AT LEAST ONE MECHANICALLY DEFORMABLE SPACE CONTAINING A LIQUID, SAID PISTON AND CYLINDER BEING FIXED RESPECTIVELY TO A SUSPENDED MASS AND TO A WHEEL CARRYING ELEMENT, A CHAMBER CONTAINING A LIQUID, MEANS SUBJECTING SAID LIQUID TO AN ELASTIC PRESSURE, MEANS FOR DECANTING THE LIQUID CONTAINED IN SAID CHAMBER SUBJECTED TO AN ELASTIC PRESSURE, A PILOT COMPARTMENT CONTAINING HYDRAULIC ELEMENTS SUBJECTING THE FLUID CONTAINED IN SAID COMPARTMENT TO AN ELASTIC PRESSURE, MEANS FORMING A RESTRICTED COMMUNICATION BETWEEN THE LIQUID OF SAID COMPARTMENT AND THE LIQUID CONTAINED IN ONE OF THE DEFORMABLE SPACES IN SUCH A MANNER THAT THE PRESSURE IN SAID PILOT COMPARTMENT DOES NOT FOLLOW, BECAUSE OF THE RESTRICTED PASSAGE, THE RAPID VARIATIONS OF THE PRESSURE PREVAILING IN THE CHAMBER CONTAINING THE LIQUID SUBJECTED TO AN ELASTIC PRESSURE, DAMPING ELEMENTS INTERPOSED BETWEEN SAID DEFORMABLE SPACE AND THE CHAMBER CONTAINING THE LIQUID SUBJECTED TO AN ELASTIC PRESSURE AND COMPRISING A SLIDE VALVE SUBJECTED ON ONE HAND TO THE DIFFERENCE OF PRESSURE BETWEEN THE DEFORMABLE SPACE AND THE LIQUID OF SAID CHAMBER AND ON THE OTHER HAND OPPOSING THE AVERAGE PRESSURE IN SAID COMPARTMENT, DISCHARGE ORIFICES IN SAID VALVE IN ORDER TO ASSURE A DAMPING BY RESTRICTING THE LIQUID ARRIVING FROM SAID MECHANICALLY DEFORMABLE SPACE AND DIRECTING IT TOWARDS THE LIQUID CONTAINED IN SAID CHAMBER AND VICE VERSA, A PAIR OF FLAP VALVES LOCATED BETWEEN SAID PILOT COMPARTMENT AND SAID MECHANICALLY DEFORMABLE SPACE ELIMINATING THE EFFECTS OF THE DAMPING WHEN THE SUSPENSION ELEMENT BY EXTENSION OR CONTRACTION IS DISPLACED FROM ITS EQUILIBRIUM POSITION AND ALLOWING THE DAMPING ELEMENTS TO ACT WHEN SAID SUSPENSION ELEMENTS COMES BACK TO ITS POSITION OF EQUILIBRIUM BY CONTRACTION OR EXTENSION.

References Cited (Backward Citations)

US2031000A Cited
US2451171A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1967-09-08 1968-03-09 1968-09-08 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1971-09-08 1972-03-09 1972-09-08 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1975-09-08 1976-03-09 1976-09-08 $7700.00 Window Closed / Lapsed

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