US3343830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring apparatus for railway cars
Assignee: ThyssenKrupp Budd Co
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Filing: 1966-01-18
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Granted: 1967-09-26
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Expires: 1986-01-18
Abstract
No abstract record available.
Inventors
- 👤 Albert G Dean
- 👤 George W Else
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:59
CPC Classifications
B; B61; B61F; B61F5/00; B61F5/02; B61F5/14; B61F5/144
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
PNEUMATIC APPARATUS FOR A CAR BODY, AND TRUCK ASSEMBLY INCLUDING A BOLSTER, THE COMBINATION COMPRISING: AIR SPRING MEANS MOUNTED ON THE BOLSTER OF SAID TRUCK ASSEMBLY AND COACTING WITH SAID CAR BODY TO SUPPORT THE SAME AT PREDETERMINED PROPER LEVELS ABOVE THE BOLSTER IN RESPONSE TO VARIATIONS IN PRESSURE WITHIN AND AIR SPRING MEANS, SUPPLEMENTAL SPRING MEANS MOUNTED ON SAID BOLSTER AND ADAPTED TO COACT WITH SAID CAR BODY, SAID LAST NAMED SPRING MEANS BEING CAPABLE OF INDEPENDENTLY SUPPORTING SAID CAR BODY AT SAID PREDETERMINED PROPER LEVELS ABOVE THE BOLSTER UPON LOSS OF PRESSURE IN SAID AIR SPRING MEANS, MOVABLE MEANS CONNECTED TO SAID SUPPLEMENTAL SPRING MEANS AND RESPONSIVE TO CHANGES IN PRESSURE WITHIN SAID AIR SPRING MEANS, SAID MOVABLE MEANS IN ONE POSI-
Claim 2
Dependent Claim
124 words
PNEUMATIC APPARATUS FOR A CAR BODY, AND TRUCK ASSEMBLY INCLUDING A BOLSTER, THE COMBINATION COMPRISING: AIR SPRING MEANS MOUNTED ON THE BOLSTER OF SAID TRUCK ASSEMBLY AND COACTING WITH SAID CAR BODY TO SUPPORT THE SAME AT PREDETERMINED PROPER LEVELS ABOVE THE BOLSTER IN RESPONSE TO VARIATIONS IN PRESSURE WITHIN AND AIR SPRING MEANS, SUPPLEMENTAL SPRING MEANS MOUNTED ON SAID BOLSTER AND ADAPTED TO COACT WITH SAID CAR BODY, SAID LAST NAMED SPRING MEANS BEING CAPABLE OF INDEPENDENTLY SUPPORTING SAID CAR BODY AT SAID PREDETERMINED PROPER LEVELS ABOVE THE BOLSTER UPON LOSS OF PRESSURE IN SAID AIR SPRING MEANS, MOVABLE MEANS CONNECTED TO SAID SUPPLEMENTAL SPRING MEANS AND RESPONSIVE TO CHANGES IN PRESSURE WITHIN SAID AIR SPRING MEANS, SAID MOVABLE MEANS IN ONE POSI-
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |