US3083948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-lift
Assignee: Individual
•
Filing: 1962-01-15
•
Granted: 1963-04-02
•
Expires: 1982-01-15
Abstract
No abstract record available.
Inventors
- 👤 Goldfader Sol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:44
CPC Classifications
B; B66; B66F; B66F3/00; B66F3/08; B66F3/20; E; E04; E04G; E04G21/00; E04G21/14; E04G21/16; E04G21/18; E04G21/1808; E04G21/1816; E04H; E04H12/00; E04H12/18; E04H12/182
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
206 words
A PORTABLE ELECTRICALLY OPERATED HOIST COMPRISING, A PEDESTAL, CASTOR WHEELS MOUNTED ON THE UNDERSIDE OF THE PEDESTAL FOR ENGAGEMENT WITH THE GROUND, AN ELECTRIC MOTOR MOUNTED ON THE PEDESTAL AND HAVING A SHAFT EXTENDING VERTICALLY THERETHROUGH, A TUBULAR STANDARD SECURED TO PROJECT VERTICALLY FROM THE CENTRE OF THE PEDESTAL, A THREADED SHAFT MOUNTED CONCENTRICALLY WITHIN THE STANDARD AND PROTRUDING THROUGH THE PEDESTAL, DRIVE MEANS CONNECTING THE MOTOR SHAFT AND THE PROTRUDING PORTION OF THE THREADED SHAFT, A THREADED BOSS SLIDEABLY MOUNTED WITHIN THE STANDARD AND ENGAGING OVER THE THREADED SHAFT, MEANS PREVENTING ROTATION OF THE BOSS WITHIN THE STANDARD, A TUBULAR EXTENSION SLEEVE SLIDABLY MOUNTED WITHIN THE STANDARD AND TERMINATING AT ITS LOWER END IN ENGAGEMENT WITH THE BOSS FOR MOVEMENT THEREWITH, A TELESCOPIC TUBULAR EXTENSION SLIDEABLY MOUNTED IN THE EXTENSION SLEEVE, AN ADAPTOR REMOVABLY MOUNTED TO THE UPPER END OF THE TELESCOPIC EXTENSION, AND LIMIT MEANS CONTROLLING THE DEGREE OF EXTENSION AND RETRACTION OF THE EXTENSION SLEEVE WITH RESPECT TO THE STANDARD, A SLOT FORMED LONGITUDINALLY OF THE STANDARD, A STOP LUG SECURED TO THE BOSS AND PROTRUDING THROUGH THE SLOT TO PREVENT ROTATION OF THE BOSS, SAID LUG COOPERATING WITH THE LIMIT MEANS TO ARREST MOVEMENT OF THE EXTENSION SLEEVE RELATIVE TO THE STANDARD.
Claim 2
Dependent Claim
206 words
A PORTABLE ELECTRICALLY OPERATED HOIST COMPRISING, A PEDESTAL, CASTOR WHEELS MOUNTED ON THE UNDERSIDE OF THE PEDESTAL FOR ENGAGEMENT WITH THE GROUND, AN ELECTRIC MOTOR MOUNTED ON THE PEDESTAL AND HAVING A SHAFT EXTENDING VERTICALLY THERETHROUGH, A TUBULAR STANDARD SECURED TO PROJECT VERTICALLY FROM THE CENTRE OF THE PEDESTAL, A THREADED SHAFT MOUNTED CONCENTRICALLY WITHIN THE STANDARD AND PROTRUDING THROUGH THE PEDESTAL, DRIVE MEANS CONNECTING THE MOTOR SHAFT AND THE PROTRUDING PORTION OF THE THREADED SHAFT, A THREADED BOSS SLIDEABLY MOUNTED WITHIN THE STANDARD AND ENGAGING OVER THE THREADED SHAFT, MEANS PREVENTING ROTATION OF THE BOSS WITHIN THE STANDARD, A TUBULAR EXTENSION SLEEVE SLIDABLY MOUNTED WITHIN THE STANDARD AND TERMINATING AT ITS LOWER END IN ENGAGEMENT WITH THE BOSS FOR MOVEMENT THEREWITH, A TELESCOPIC TUBULAR EXTENSION SLIDEABLY MOUNTED IN THE EXTENSION SLEEVE, AN ADAPTOR REMOVABLY MOUNTED TO THE UPPER END OF THE TELESCOPIC EXTENSION, AND LIMIT MEANS CONTROLLING THE DEGREE OF EXTENSION AND RETRACTION OF THE EXTENSION SLEEVE WITH RESPECT TO THE STANDARD, A SLOT FORMED LONGITUDINALLY OF THE STANDARD, A STOP LUG SECURED TO THE BOSS AND PROTRUDING THROUGH THE SLOT TO PREVENT ROTATION OF THE BOSS, SAID LUG COOPERATING WITH THE LIMIT MEANS TO ARREST MOVEMENT OF THE EXTENSION SLEEVE RELATIVE TO THE STANDARD.
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) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |