Lockable tank closure with expandable plug
Abstract
Abstract A LOCKABLE CLOSURE FOR A FUEL TANK FILLER OPENING COMPRISING A FRAME CARRYING A RADIALLY EXPANDABLE, ANNULAR PLUG ENGAGEABLE WITH THE PERIPHERY OF THE FILLER OPENING TO LOCK THE CLOSURE THEREIN. THE ANNULAR PLUG IS EXPANDED RADIALLY BY A PLUG EXPANDING MEANS WHICH IS RESPONSIVE TO AXIALLY INWARD MOVEMENT OF A CENTRAL ACTUATOR CARRIED BY THE CLOSURE FRAME ADJACENT THE OUTER END THEREOF. THE CENTRAL ACTUATOR PROJECTS AXIALLY OUTWARDLY BEYOND THE OUTER END OF THE CLOSURE FAME PRIOR TO ACTUATION OF THE PLUG EXPANDABLE MEANS TO PROVIDE A VISUAL INDICATION THAT THE CLOSURE HAS NOT BEEN LOCKED. THE OUTER END OF THE CLOSURE FRAME CARRIES AN ANNULAR SEAL ENGAGEABLE WITH THE PERIPHERY OF THE FILLER OPENING. THE ANNULAR PLUG MAY BE FORMED OF AN ELASTOMERIC MATERIAL TO PROVIDE A SECOND ANNULAR SEAL WHEN THE CLOSURE IS LOCKED.
Inventors
- 👤 Willard W Shepherd
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |