US3307656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic system for lift trucks and the like
Assignee: Doosan Bobcat North America Inc
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Filing: 1965-10-22
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Granted: 1967-03-07
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Expires: 1985-10-22
Abstract
No abstract record available.
Inventors
- 👤 Jerome R Susag
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:03
CPC Classifications
B; B66; B66F; B66F9/00; B66F9/06; B66F9/075; B66F9/20; B66F9/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
IN A LIFT TRUCK HAVING AN UPRIGHT LOAD LIFTING MEANS ADJACENT ONE END THEREOF, HYDRAULIC LIFT CYLINDER AND PISTON MEANS FOR ELEVATING LOADS ON THE LIFTING MEANS, HYDRAULIC TILT CYLINDER AND PISTON MEANS FOR TILTING THE LIFTING MEANS OUT OF A VERTICAL POSITION AND OPERATOR CONTROL MEANS FOR DIRECTING PRESSURE FLUID TO THE LIFT AND TILT CYLINDER MEANS TO ELEVATE AND TILT THE LIFTING MEANS, A CONDUIT MEANS INTERCONNECTING THE LIFT AND TILT CYLINDER MEANS AND COMMUNICATING WITH LIFT CYLINDER MEANS AT A PREDETERMINED ELEVATION AND WITH THE TILT CYLINDER MEANS AT A PREDETERMINED LOCATION LONGITUDINAL THEREOF, AND RELIEF VALVE MEANS ADAPTED TO VENT THE LIFT CYLINDER MEANS THROUGH SAID CONDUIT MEANS TO A LOWER PRESSURE UNDER PREDETERMINED CONDITIONS OF TILT OF THE LOAD LIFTING MEANS, ELEVATION OF THE LIFT CYLINDER MEANS AND LOAD CARRIED BY THE LOAD LIFTING MEANS.
Claim 2
Dependent Claim
140 words
IN A LIFT TRUCK HAVING AN UPRIGHT LOAD LIFTING MEANS ADJACENT ONE END THEREOF, HYDRAULIC LIFT CYLINDER AND PISTON MEANS FOR ELEVATING LOADS ON THE LIFTING MEANS, HYDRAULIC TILT CYLINDER AND PISTON MEANS FOR TILTING THE LIFTING MEANS OUT OF A VERTICAL POSITION AND OPERATOR CONTROL MEANS FOR DIRECTING PRESSURE FLUID TO THE LIFT AND TILT CYLINDER MEANS TO ELEVATE AND TILT THE LIFTING MEANS, A CONDUIT MEANS INTERCONNECTING THE LIFT AND TILT CYLINDER MEANS AND COMMUNICATING WITH LIFT CYLINDER MEANS AT A PREDETERMINED ELEVATION AND WITH THE TILT CYLINDER MEANS AT A PREDETERMINED LOCATION LONGITUDINAL THEREOF, AND RELIEF VALVE MEANS ADAPTED TO VENT THE LIFT CYLINDER MEANS THROUGH SAID CONDUIT MEANS TO A LOWER PRESSURE UNDER PREDETERMINED CONDITIONS OF TILT OF THE LOAD LIFTING MEANS, ELEVATION OF THE LIFT CYLINDER MEANS AND LOAD CARRIED BY THE LOAD LIFTING MEANS.
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) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |