US3236259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Counterbalanced loading device
Assignee: Oil States Industries Inc
•
Filing: 1962-12-18
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Granted: 1966-02-22
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Expires: 1982-12-18
Abstract
No abstract record available.
Inventors
- 👤 Albert A Ashton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:06
CPC Classifications
B; B67; B67D; B67D9/00; B67D9/02; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/8807
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
119 words
A LOADING DEVICE COMPRISING, A PLATFORM, A TUBULAR LOADING ARM, MEANS ON THE PLATFORM MOUNTING THE LOADING ARM FOR SWINGING MOVEMENT ABOUT ONE END OF THE ARM, FIRST WHEEL MEANS CONNECTED TO THE LOADING ARM AND MOUNTED FOR ROTATION IN RESPONSE TO VERTICAL SWINGING MOVEMENT OF THE LOADING ARM, SECOND WHEEL MEANS ROTATABLY MOUNTED ON SAID PLATFORM, MEANS INCLUDING TEETH ON THE WHEEL MEANS INTERLOCKING THE PERIPHERIES OF SAID FIRST AND SECOND WHEEL MEANS WITH A RATIO OF APPROXIMATELY 1.4 TO 1 AND ROTATING THE SECOND WHEEL MEANS IN RESPONSE TO ROTATION OF THE FIRST WHEEL MEANS, AND A COUNTERBALANCE MOUNTED ON THE SECOND WHEEL MEANS FOR COUNTERBALANCING AT LEAST A PORTION OF THE WEIGHT OF THE LOADING ARM.
References Cited (Backward Citations)
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US829609A
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US2250227A
Cited
US2722230A
Cited
US3073343A
Cited
US3085593A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |