Patent US3094192A successfully refreshed from Google Patents.
US3094192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Platform operating system
Assignee: Symington Wayne Corp
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Filing: 1960-10-21
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Granted: 1963-06-18
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Expires: 1980-10-21
Abstract
No abstract record available.
Inventors
- 👤 John B Mcalpine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:55
CPC Classifications
B; B66; B66F; B66F3/00; B66F3/24; B66F3/25; B66F3/30; B66F7/00; B66F7/10; B66F7/16; B66F7/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A VERTICALLY-MOVABLE PLATFORM ARRANGEMENT COMPRISING A HYDRAULIC PISTON AND CYLINDER ASSEMBLY, A PLATFORM MOUNTED UPON SAID PISTON, SAID PISTON AND CYLNDER ASSEMBLY HAVING A STROKE SUFFICIENT TO RAISE SAID PLATFORM THROUGH A SERIES OF LEVELS INCLUDING A LOADING LEVEL, A LOCKING BAR ASSEMBLY CONNECTED TO SAID PLATFORM INCLUDING LOCKING BARS WHICH ARE EXTENDABLE TO PROJECT LATERALLY FROM SAID PLATFORM, AN ACTUATING DEVICE CONNECTED TO SAID LOCKING BAR ASSEMBLY FOR EXTENDING SAID BARS LATERALLY FROM SAID PLATFORM AND FOR RETRACTING THEM SUPPORTING SURFACE MEANS DISPOSED AT THE SIDE OF SAID PLATFORM ADJACENT SAID LOADING LEVEL FOR ENGAGEMENT BY SAID LOCKING BARS WHEN THEY ARE EXTENDED, HYDRAULIC PRESSURE BLEEDING MEANS CONNECTED TO SAID PISTON AND CYLINDER ASSEMBLY FOR LOWERING SAID PLATFORM AT A SLOW SPEED, CONTROL MEANS FOR ACTUATING SAID PRESSURE BLEEDING MEANS WHEN SAID LOCKING BARS ARE EXTENDING ABOVE SAID SUPPORTING SURFACE MEANS AND SAID PLATFORM IS SUBSTANTIALLY
Claim 2
Dependent Claim
147 words
A VERTICALLY-MOVABLE PLATFORM ARRANGEMENT COMPRISING A HYDRAULIC PISTON AND CYLINDER ASSEMBLY, A PLATFORM MOUNTED UPON SAID PISTON, SAID PISTON AND CYLNDER ASSEMBLY HAVING A STROKE SUFFICIENT TO RAISE SAID PLATFORM THROUGH A SERIES OF LEVELS INCLUDING A LOADING LEVEL, A LOCKING BAR ASSEMBLY CONNECTED TO SAID PLATFORM INCLUDING LOCKING BARS WHICH ARE EXTENDABLE TO PROJECT LATERALLY FROM SAID PLATFORM, AN ACTUATING DEVICE CONNECTED TO SAID LOCKING BAR ASSEMBLY FOR EXTENDING SAID BARS LATERALLY FROM SAID PLATFORM AND FOR RETRACTING THEM SUPPORTING SURFACE MEANS DISPOSED AT THE SIDE OF SAID PLATFORM ADJACENT SAID LOADING LEVEL FOR ENGAGEMENT BY SAID LOCKING BARS WHEN THEY ARE EXTENDED, HYDRAULIC PRESSURE BLEEDING MEANS CONNECTED TO SAID PISTON AND CYLINDER ASSEMBLY FOR LOWERING SAID PLATFORM AT A SLOW SPEED, CONTROL MEANS FOR ACTUATING SAID PRESSURE BLEEDING MEANS WHEN SAID LOCKING BARS ARE EXTENDING ABOVE SAID SUPPORTING SURFACE MEANS AND SAID PLATFORM IS SUBSTANTIALLY
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) | 1966-06-17 | 1966-12-17 | 1967-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-17 | 1970-12-17 | 1971-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-17 | 1974-12-17 | 1975-06-18 | $7700.00 | Window Closed / Lapsed |