Patent US3298462A successfully refreshed from Google Patents.
US3298462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traction lift for scaffolding towers
Assignee: BEAVER ADVANCE CORP
•
Filing: 1966-01-17
•
Granted: 1967-01-17
•
Expires: 1986-01-17
Abstract
No abstract record available.
Inventors
- 👤 Ronald G Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:00
CPC Classifications
B; B66; B66D; B66D1/00; B66D1/02; B66D1/14; B66B; B66B9/00; B66B9/16; B66B9/187; B66D1/28; B66D2700/00; B66D2700/01; B66D2700/0183; Y; Y10; Y10S; Y10S187/00; Y10S187/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
TRACTION APPARATUS FOR MOUNTING ON AN OVERHEAD LIFT PLATFORM TO RAISE AND LOWER AN ELEVATOR AND TO RAISE AND LOWER THE LIFT PLATFORM WHICH COMPRISES, A DRIVE MOTOR, A GEAR REDUCTION UNIT HAVING A DRIVEN SHAFT OPERATIVELY-CONNECTED TO SAID MOTOR FOR ACTUATION THEREBY, A SUPPORT SHAFT, MEANS FOR CARRYING SAID SUPPORT SHAFT, SLEEVE MEANS ROTATABLY-POSITIONED ON SAID SUPPORT SHAFT AND CONNECTED TO SAID GEAR REDUCTION UNIT FOR ACTUATION THEREBY, SAID SLEEVE MEANS HAVING A SHEAVE TO CARRY CABLE REEVING FOR RAISING AND LOWERING THE ELEVATOR, A WINDING DRUM OPERATIVELY-ASSOCIATED WITH SAID SLEEVE MEANS FOR ROTATION THEREWITH ON SAID SUPPORT SHAFT, AND SAID WINDING DRUM HAVING MEANS TO SECURE ONE END OF A WINDING CABLE THERETO FOR RAISING THE LIFT PLATFORM FROM ONE TO A SECOND STAGE OF ELEVATION.
Claim 2
Dependent Claim
128 words
TRACTION APPARATUS FOR MOUNTING ON AN OVERHEAD LIFT PLATFORM TO RAISE AND LOWER AN ELEVATOR AND TO RAISE AND LOWER THE LIFT PLATFORM WHICH COMPRISES, A DRIVE MOTOR, A GEAR REDUCTION UNIT HAVING A DRIVEN SHAFT OPERATIVELY-CONNECTED TO SAID MOTOR FOR ACTUATION THEREBY, A SUPPORT SHAFT, MEANS FOR CARRYING SAID SUPPORT SHAFT, SLEEVE MEANS ROTATABLY-POSITIONED ON SAID SUPPORT SHAFT AND CONNECTED TO SAID GEAR REDUCTION UNIT FOR ACTUATION THEREBY, SAID SLEEVE MEANS HAVING A SHEAVE TO CARRY CABLE REEVING FOR RAISING AND LOWERING THE ELEVATOR, A WINDING DRUM OPERATIVELY-ASSOCIATED WITH SAID SLEEVE MEANS FOR ROTATION THEREWITH ON SAID SUPPORT SHAFT, AND SAID WINDING DRUM HAVING MEANS TO SECURE ONE END OF A WINDING CABLE THERETO FOR RAISING THE LIFT PLATFORM FROM ONE TO A SECOND STAGE OF ELEVATION.
References Cited (Backward Citations)
US2644545A
Cited
US3217896A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |