US3120823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety interlock for tilting dump car valve actuators
Assignee: Individual
•
Filing: 1959-05-22
•
Granted: 1964-02-11
•
Expires: 1979-05-22
Abstract
No abstract record available.
Inventors
- 👤 Flowers Henry Fort
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:08
CPC Classifications
B; B61; B61D; B61D9/00; B61D9/02; B61D7/00; B61D7/12; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20207; Y10T74/20238
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
IN A TILTING DUMP CAR HAVING AN UNDERFRAME AND SEPARATE ELEVATING MEANS THEREON FOR TILTING THE CAR BODY IN EACH SIDEWAYS DIRECTION FOR DISCHARGE, INDEPENDENTLY OPERATED VALVES, MEANS CONNECTING EACH VALVE TO ONE OF SAID ELEVATING MEANS, SEPARATE VALVE-ACTUATING ROCK SHAFTS JOURNALED ON THE UNDERFRAME AND MEANS CONNECTING EACH SHAFT WITH ONE OF SAID VALVES, A ROCK ARM HAVING ITS MIDDLE POINT ATTACHED TO EACH ROCK SHAFT, A HORIZONTAL ROD TRANSVERSELY MOUNTED ON THE UNDERFRAME AND HAVING EACH END MOVABLE BY ONE OF SAID ROCK ARMS TO BRING THE OPPOSITE END OF THE ROD INTO THE ARCUATE PATH OF THE OTHER ROCK ARM, AND TWO LATERALLY MOVABLE CONTROL RODS CARRIED BY THE
Claim 2
Dependent Claim
112 words
IN A TILTING DUMP CAR HAVING AN UNDERFRAME AND SEPARATE ELEVATING MEANS THEREON FOR TILTING THE CAR BODY IN EACH SIDEWAYS DIRECTION FOR DISCHARGE, INDEPENDENTLY OPERATED VALVES, MEANS CONNECTING EACH VALVE TO ONE OF SAID ELEVATING MEANS, SEPARATE VALVE-ACTUATING ROCK SHAFTS JOURNALED ON THE UNDERFRAME AND MEANS CONNECTING EACH SHAFT WITH ONE OF SAID VALVES, A ROCK ARM HAVING ITS MIDDLE POINT ATTACHED TO EACH ROCK SHAFT, A HORIZONTAL ROD TRANSVERSELY MOUNTED ON THE UNDERFRAME AND HAVING EACH END MOVABLE BY ONE OF SAID ROCK ARMS TO BRING THE OPPOSITE END OF THE ROD INTO THE ARCUATE PATH OF THE OTHER ROCK ARM, AND TWO LATERALLY MOVABLE CONTROL RODS CARRIED BY THE
References Cited (Backward Citations)
US1248312A
Cited
US1251770A
Cited
US1283735A
Cited
US1972042A
Cited
US1985653A
Cited
US2307284A
Cited
US2588133A
Cited
US2646474A
Cited
US2738733A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-02-10 | 1967-08-12 | 1968-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-10 | 1971-08-12 | 1972-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-10 | 1975-08-12 | 1976-02-11 | $7700.00 | Window Closed / Lapsed |