US3287024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Industrial truck
Assignee: Eaton Corp
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Filing: 1964-03-24
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Granted: 1966-11-22
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Expires: 1984-03-24
Abstract
No abstract record available.
Inventors
- 👤 Bronislaus I Ulinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:11
CPC Classifications
B; B62; B62B; B62B3/00; B62B3/04; B62B3/06; B62B3/0618
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
IN AN INDUSTRIAL TRUCK, A LOAD PLATFORM, MEANS MOUNTING SAID LOAD PLATFORM FOR VERTICAL MOVEMENT BETWEEN A LOWERED POSITION AND AN ELEVATED POSITION, TWO PAIR OF RAMS, MEANS CONNECTING SAID RAMS WITH SAID LOAD PLATFORM PROVIDING SIMULTANEOUS OPERATION OF SAID RAMS TO ELEVATE SAID LOAD PLATFORM, A SOURCE OF FLUID PRESSURE, MEANS FOR CONNECTING ONE SIDE OF ONE PAIR OF SAID RAMS TO SAID SOURCE OF FLUID PRESSURE TO OPERATE SAID RAMS, A HYDRAULIC CONNECTION CONNECTING THE OTHER SIDE OF SAID ONE PAIR OF RAMS WITH ONE SIDE OF SAID OTHER PAIR OF RAMS WHEREBY THE RAMS ARE CONNECTED HYDRAULICALLY IN SERIES AND OPERATION OF SAID ONE PAIR OF RAMS CAUSES SIMULTANEOUS OPERATION OF SAID OTHER RAM, VALVE MEANS OPERABLE FOR SELECTIVELY AND SIMULTNAEOUSLY CONNECTING SAID ONE PAIR OF RAMS AND SAID OTHER PAIR OF RAMS WITH SAID SOURCE OF FLUID PRESSURE AND THEREBY REPLENISH FLUID LOST FROM SAID HYDRAULIC CONNECTION, SAID VALVE MEANS BEING CLOSED DURING ELEVATION OF SAID LOAD PLATFORM TO DISCONNECT SAID SOURCE OF LIQUID PRESSURE FROM SAID HYDRAULIC CONNECTION.
Claim 2
Dependent Claim
173 words
IN AN INDUSTRIAL TRUCK, A LOAD PLATFORM, MEANS MOUNTING SAID LOAD PLATFORM FOR VERTICAL MOVEMENT BETWEEN A LOWERED POSITION AND AN ELEVATED POSITION, TWO PAIR OF RAMS, MEANS CONNECTING SAID RAMS WITH SAID LOAD PLATFORM PROVIDING SIMULTANEOUS OPERATION OF SAID RAMS TO ELEVATE SAID LOAD PLATFORM, A SOURCE OF FLUID PRESSURE, MEANS FOR CONNECTING ONE SIDE OF ONE PAIR OF SAID RAMS TO SAID SOURCE OF FLUID PRESSURE TO OPERATE SAID RAMS, A HYDRAULIC CONNECTION CONNECTING THE OTHER SIDE OF SAID ONE PAIR OF RAMS WITH ONE SIDE OF SAID OTHER PAIR OF RAMS WHEREBY THE RAMS ARE CONNECTED HYDRAULICALLY IN SERIES AND OPERATION OF SAID ONE PAIR OF RAMS CAUSES SIMULTANEOUS OPERATION OF SAID OTHER RAM, VALVE MEANS OPERABLE FOR SELECTIVELY AND SIMULTNAEOUSLY CONNECTING SAID ONE PAIR OF RAMS AND SAID OTHER PAIR OF RAMS WITH SAID SOURCE OF FLUID PRESSURE AND THEREBY REPLENISH FLUID LOST FROM SAID HYDRAULIC CONNECTION, SAID VALVE MEANS BEING CLOSED DURING ELEVATION OF SAID LOAD PLATFORM TO DISCONNECT SAID SOURCE OF LIQUID PRESSURE FROM SAID HYDRAULIC CONNECTION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |