Patent US3084809A successfully refreshed from Google Patents.
US3084809A
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Buffer for rail vehicles
Assignee: Societa Applicazioni Gomma Antivibranti SAGA SpA
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Filing: 1960-05-19
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Granted: 1963-04-09
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Expires: 1980-05-19
Abstract
No abstract record available.
Inventors
- 👤 Lucchese Giulio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:23
CPC Classifications
B; B61; B61G; B61G11/00; B61G11/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
BUFFER FOR RAIL VEHICLES OF THE TYPE INCLUDING A HEADED CYLINDER TELESCOPICALLY SLIDABLE IN A TUBULAR CASING, AND A COMPOUND SYSTEM INCLUDING RESILIENT AND FRICTION MEANS ACTING BETWEEN THE BOTTOM OF THE CASING AND THE CYLINDER, IN ORDER TO BRAKE THE MUTUAL RELATIVE MOVEMENT OF THE LATTER WHEN AN AXIAL THRUST IS APPLIED ON THE BUFFER, CHARACTERIZED IN THAT THE SAID SYSTEM INCLUDES TWO COAXIAL PISTON MEMBERS IN A MUTUAL TELESCOPIC ENGAGEMENT DEFINING JOINTLY WITH THE CYLINDER AN ANNULAR CAVITY; A HARD RUBBER RING IN SAID ANNULAR CAVITY, THE CIRCUMFERENTIAL SURFACE OF SAID RING BEING SUBSTANTIALLY OUT OF FRICTIONAL ENGAGEMENT WITH THE CYLINDER, BUT BEING CAPABLE OF FRICTIONALLY ENGAGING THE CYLINDER AT A MUTUAL APPROACH OF THE
Claim 2
Dependent Claim
117 words
BUFFER FOR RAIL VEHICLES OF THE TYPE INCLUDING A HEADED CYLINDER TELESCOPICALLY SLIDABLE IN A TUBULAR CASING, AND A COMPOUND SYSTEM INCLUDING RESILIENT AND FRICTION MEANS ACTING BETWEEN THE BOTTOM OF THE CASING AND THE CYLINDER, IN ORDER TO BRAKE THE MUTUAL RELATIVE MOVEMENT OF THE LATTER WHEN AN AXIAL THRUST IS APPLIED ON THE BUFFER, CHARACTERIZED IN THAT THE SAID SYSTEM INCLUDES TWO COAXIAL PISTON MEMBERS IN A MUTUAL TELESCOPIC ENGAGEMENT DEFINING JOINTLY WITH THE CYLINDER AN ANNULAR CAVITY; A HARD RUBBER RING IN SAID ANNULAR CAVITY, THE CIRCUMFERENTIAL SURFACE OF SAID RING BEING SUBSTANTIALLY OUT OF FRICTIONAL ENGAGEMENT WITH THE CYLINDER, BUT BEING CAPABLE OF FRICTIONALLY ENGAGING THE CYLINDER AT A MUTUAL APPROACH OF THE
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-08 | 1966-10-08 | 1967-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-08 | 1970-10-08 | 1971-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-08 | 1974-10-08 | 1975-04-09 | $7700.00 | Window Closed / Lapsed |