US3301587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Materials positioning fork
Assignee: PRENTICE HYDRAULICS Inc
•
Filing: 1965-03-01
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Granted: 1967-01-31
•
Expires: 1985-03-01
Abstract
No abstract record available.
Inventors
- 👤 Leo L Heikkinen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:32
CPC Classifications
B; B66; B66C; B66C1/00; B66C1/10; B66C1/22; B66C1/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A MATERIALS HANDLING DEVICE, COMPRISING: A FORK LIFT FOR HANDLING GENERALLY FLAT RIGID MATERIAL; A GENERALLY L-SHAPED ARM PIVOTALLY ATTACHED AT ONE OF ITS ENDS TO ONE END OF SAID FORK LIFT; A HYDRAULICALLY ACTUABLE PISTON OPERATIVELY CONNECTED BETWEEN SAID ARM AND SAID FORK FOR SWINGING SAID FORK ABOUT SAID PIVOT ATTACHMENT TO LIFT THE MATERIAL BEING HANDLED; AND MEANS ATTACHED TO THE OTHER END OF SAID ARM FOR COUPLING SAID ARM TO A BOOM TYPE CRANE FOR OPERATIVE ENGAGEMENT THEREWITH.
Claim 2
Dependent Claim
81 words
A MATERIALS HANDLING DEVICE, COMPRISING: A FORK LIFT FOR HANDLING GENERALLY FLAT RIGID MATERIAL; A GENERALLY L-SHAPED ARM PIVOTALLY ATTACHED AT ONE OF ITS ENDS TO ONE END OF SAID FORK LIFT; A HYDRAULICALLY ACTUABLE PISTON OPERATIVELY CONNECTED BETWEEN SAID ARM AND SAID FORK FOR SWINGING SAID FORK ABOUT SAID PIVOT ATTACHMENT TO LIFT THE MATERIAL BEING HANDLED; AND MEANS ATTACHED TO THE OTHER END OF SAID ARM FOR COUPLING SAID ARM TO A BOOM TYPE CRANE FOR OPERATIVE ENGAGEMENT THEREWITH.
References Cited (Backward Citations)
US2852150A
Cited
US2870926A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |