US3384253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic lifting devices
Assignee: Individual
•
Filing: 1966-11-07
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Granted: 1968-05-21
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Expires: 1986-11-07
Abstract
No abstract record available.
Inventors
- 👤 Robert L Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:30
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/54; B60P1/5404; B60P1/5423; B60P1/5433
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A HYDRAULIC LIFTING DEVICE ON A VEHICLE HAVING A TIPPING BODY, INCLUDING AT LEAST ONE HYDRAULIC RAM AND CYLINDER UNIT, A TUBULAR PILLAR SURROUNDING AND PIVOTAL ABOUT THE AXIS OF SAID UNIT, A HEAD STOCK ON THE PILLAR, SAID HEAD STOCK PROVIDING A PIVOTAL MOUNTING, A CRANE BEAM ON SAID MOUNTING, CONNECTION MEANS BETWEEN SAID BEAM AND THE UNIT RAM FOR THE RAM TO GIVE THE BEAM ANGULAR MOVEMENT ABOUT ITS PIVOTAL MOUNTING, SELECTION MEANS FOR LOCKING THE BEAM TEMPORARILY AT WILL TO THE HEAD STOCK TO PREVENT ANY ANGULAR MOVEMENT OF THE BEAM SO THAT IT WILL ONLY RISE AND FALL WITH THE RAM, AND ATTACHMENT MEANS FOR CONNECTING THE PILLAR TO THE TIPPING BODY OF THE VEHICLE FOR THE RAM TO TILT SAID BODY.
Claim 2
Dependent Claim
126 words
A HYDRAULIC LIFTING DEVICE ON A VEHICLE HAVING A TIPPING BODY, INCLUDING AT LEAST ONE HYDRAULIC RAM AND CYLINDER UNIT, A TUBULAR PILLAR SURROUNDING AND PIVOTAL ABOUT THE AXIS OF SAID UNIT, A HEAD STOCK ON THE PILLAR, SAID HEAD STOCK PROVIDING A PIVOTAL MOUNTING, A CRANE BEAM ON SAID MOUNTING, CONNECTION MEANS BETWEEN SAID BEAM AND THE UNIT RAM FOR THE RAM TO GIVE THE BEAM ANGULAR MOVEMENT ABOUT ITS PIVOTAL MOUNTING, SELECTION MEANS FOR LOCKING THE BEAM TEMPORARILY AT WILL TO THE HEAD STOCK TO PREVENT ANY ANGULAR MOVEMENT OF THE BEAM SO THAT IT WILL ONLY RISE AND FALL WITH THE RAM, AND ATTACHMENT MEANS FOR CONNECTING THE PILLAR TO THE TIPPING BODY OF THE VEHICLE FOR THE RAM TO TILT SAID BODY.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |