US3169012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Landing gear for converter dollies
Assignee: F L AND J Manufacturing CO Inc
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Filing: 1962-03-01
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Granted: 1965-02-09
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Expires: 1982-03-01
Abstract
No abstract record available.
Inventors
- 👤 Robert M Fagan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:22
CPC Classifications
B; B62; B62D; B62D53/00; B62D53/04; B62D53/08; B62D53/0857; B62D53/0864
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
148 words
A LANDING GEAR MECHANISM FOR CONVERTER DOLLIES, COMPRISING: (A) AN AUXILIARR AIR TANK ATTACHED TO THE FRAME OF THE CONVERTER; (B) AN AIR LINE LEADING FROM THE MAIN AIR TANK ON SAID CONVERTER TO SAID AUXILIARY AIR TANK, SAID AIR LINE HAVING A VALVE THEREIN TO PERMIT FLOW OF AIR FROM SAID MAIN TO SAID AUXILIARY TANK AND TO PROHIBIT AIR FLOW FROM SAID AUXILIARY TO SAID MAIN TANK; (C) A STIFF LEG PIVOTALLY ATTACHED TO THE UNDERSIDE OF SAID FRAME FORWARDLY OF SAID AUXILIARY AIR TANK FOR SUPPORTING THE FORWARD PORTION OF SAID CONVERTER FRAME; (D) A PNEUMATIC CYLINDER PIVOTALLY SECURED TO SAID CONVERTER FRAME AND HAVING A PISTON ROD ADAPTED TO BE CONNECTED TO SAID STIFF LEG; AND (E) CONTROL MEANS INCLUDING A VALVE FOR ACTUATING SAID PISTON ROD AND AIR LINES FOR DIRECTING AIR FROM SAID AUXILIARY AIR TANK THROUGH SAID VALVE TO SAID CYLINDER.
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) | 1968-02-09 | 1968-08-10 | 1969-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-09 | 1972-08-10 | 1973-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-09 | 1976-08-10 | 1977-02-09 | $7700.00 | Window Closed / Lapsed |