Patent US2524955A successfully refreshed from Google Patents.
Patent US3154160A successfully refreshed from Google Patents.
US3154160A
Expired / Lapsed
US
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Load indicator for material handling vehicle
Assignee: Allis Chalmers Corp
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Filing: 1962-06-14
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Granted: 1964-10-27
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Expires: 1982-06-14
Abstract
No abstract record available.
Inventors
- 👤 Harvey W Roekwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:16
CPC Classifications
G; G01; G01G; G01G19/00; G01G19/08; G01G19/083; Y; Y10; Y10S; Y10S280/00; Y10S280/90; Y10S37/00; Y10S37/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
A LOAD INDICATING MECHANISM FOR A MATERIAL HANDLING VEHICLE OF THE TYPE HAVING FRONT AND REAR WHEELED UNITS PIVOTALLY INTERCONNECTED ON A TRANSVERSE AXIS AND AT LEAST ONE HYDRAULIC RAM BETWEEN SAID UNITS FOR CAUSING RELATIVE PIVOTING OF THE LATTER ABOUT SAID AXIS BETWEEN RAISED AND LOWERED POSITIONS, SAID MECHANISM COMPRISING: HYDRAULIC FLUID SUPPLY AND CONTROL MEANS FOR SAID RAM INCLUDING A VALVE MOVABLE FROM A NEUTRAL POSITION, IN WHICH FLUID IS BLOCKED IN SAID RAM, TO RAISE AND LOWER POSITIONS, MEANS FOR INDICATING THE WEIGHT OF THE MATERIAL BEING TRANSPORTED IN SAID VEHICLE INCLUDING AN INDICATOR RESPONSIVE TO THE PRESSURE IN THE LOAD SUPPORTING END OF SAID RAM, MEANS PREVENTING SAID INDICATOR FROM BEING OPERATIVE TO INDICATE THE WEIGHT OF MATERIAL CARRIED BY SAID VEHICLE WHEN SAID UNITS ARE PIVOTED OUT OF THEIR RAISED POSITION, AND MEANS PREVENTING SAID INDICATOR FROM BEING OPERATIVE TO INDICATE THE WEIGHT OF MATERIAL CARRIED BY SAID VEHICLE WHEN SAID VALVE IS MOVED OUT OF ITS NEUTRAL POSITION.
Claim 2
Dependent Claim
164 words
A LOAD INDICATING MECHANISM FOR A MATERIAL HANDLING VEHICLE OF THE TYPE HAVING FRONT AND REAR WHEELED UNITS PIVOTALLY INTERCONNECTED ON A TRANSVERSE AXIS AND AT LEAST ONE HYDRAULIC RAM BETWEEN SAID UNITS FOR CAUSING RELATIVE PIVOTING OF THE LATTER ABOUT SAID AXIS BETWEEN RAISED AND LOWERED POSITIONS, SAID MECHANISM COMPRISING: HYDRAULIC FLUID SUPPLY AND CONTROL MEANS FOR SAID RAM INCLUDING A VALVE MOVABLE FROM A NEUTRAL POSITION, IN WHICH FLUID IS BLOCKED IN SAID RAM, TO RAISE AND LOWER POSITIONS, MEANS FOR INDICATING THE WEIGHT OF THE MATERIAL BEING TRANSPORTED IN SAID VEHICLE INCLUDING AN INDICATOR RESPONSIVE TO THE PRESSURE IN THE LOAD SUPPORTING END OF SAID RAM, MEANS PREVENTING SAID INDICATOR FROM BEING OPERATIVE TO INDICATE THE WEIGHT OF MATERIAL CARRIED BY SAID VEHICLE WHEN SAID UNITS ARE PIVOTED OUT OF THEIR RAISED POSITION, AND MEANS PREVENTING SAID INDICATOR FROM BEING OPERATIVE TO INDICATE THE WEIGHT OF MATERIAL CARRIED BY SAID VEHICLE WHEN SAID VALVE IS MOVED OUT OF ITS NEUTRAL POSITION.
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) | 1967-10-27 | 1968-04-27 | 1968-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-27 | 1972-04-27 | 1972-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-27 | 1976-04-27 | 1976-10-27 | $7700.00 | Window Closed / Lapsed |