US3322397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scraper winch
Assignee: Individual
•
Filing: 1966-03-28
•
Granted: 1967-05-30
•
Expires: 1986-03-28
Abstract
No abstract record available.
Inventors
- 👤 Arthur H Pillman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:39
CPC Classifications
B; B66; B66D; B66D1/00; B66D1/02; B66D1/14; B66D1/26; B66D2700/00; B66D2700/01; B66D2700/0125; B66D2700/0158; B66D2700/0166; B66D2700/0175
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A WINCH FOR A HAULAGE DRUM COMPRING A CENTRAL COMPARTMENT, AN OIL RESERVOIR IN SAID COMPARTMENT, A DRIVING SHAFT PASSING TRANSVERSELY THERETHROUGH AND CARRYING A MAIN GEAR WHEEL MOUNTED IN SAID COMPARTMENT, A DRIVING GEAR MESHING WITH THE MAIN GEAR WHEEL AND CARRIED ON A SHAFT DRIVEN BY A MOTOR, A HAULAGE DRUM RELEASABLY MOUNTED ON SAID SHAFT OUTSIDE THE CENTRAL COMPARTMENT, SAID HAULAGE DRUM HAVING AN AXIAL BORE EXTENDING THERETHROUGH, THE INNER PORTION OF SAID BORE BEING OF ENLARGED DIAMETER, A RADIALLY ACTING HYDRAULICALLY OPERATED CLUTCH ASSEMBLY INSIDE SAID INNER PORTION OF SAID BORE AND SECURING IN DRIVING RELATION SAID DRUM TO SAID SHAFT, AND MEANS INTERNALLY OF SAID DRUM SUPPLYING OIL UNDER PRESSURE TO SAID CLUTCH DIRECTLY SAID COMPARTMENT.
Claim 2
Dependent Claim
121 words
A WINCH FOR A HAULAGE DRUM COMPRING A CENTRAL COMPARTMENT, AN OIL RESERVOIR IN SAID COMPARTMENT, A DRIVING SHAFT PASSING TRANSVERSELY THERETHROUGH AND CARRYING A MAIN GEAR WHEEL MOUNTED IN SAID COMPARTMENT, A DRIVING GEAR MESHING WITH THE MAIN GEAR WHEEL AND CARRIED ON A SHAFT DRIVEN BY A MOTOR, A HAULAGE DRUM RELEASABLY MOUNTED ON SAID SHAFT OUTSIDE THE CENTRAL COMPARTMENT, SAID HAULAGE DRUM HAVING AN AXIAL BORE EXTENDING THERETHROUGH, THE INNER PORTION OF SAID BORE BEING OF ENLARGED DIAMETER, A RADIALLY ACTING HYDRAULICALLY OPERATED CLUTCH ASSEMBLY INSIDE SAID INNER PORTION OF SAID BORE AND SECURING IN DRIVING RELATION SAID DRUM TO SAID SHAFT, AND MEANS INTERNALLY OF SAID DRUM SUPPLYING OIL UNDER PRESSURE TO SAID CLUTCH DIRECTLY SAID COMPARTMENT.
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) | 1970-05-29 | 1970-11-28 | 1971-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-29 | 1974-11-28 | 1975-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-29 | 1978-11-28 | 1979-05-30 | $7700.00 | Window Closed / Lapsed |