Liquid level indicator assembly
Abstract
Abstract AN INDICATOR ASSEMBLY FOR INDICATING LIQUID LEVELS INCLUDES A MEMBER OF LIGHT TRANSMITTING MATERIAL HAVING A BODY SECTION, THE LOWER PORTION OF WHICH IS IMMERSIBLE WITHIN LIQUID AND THE UPPER PORTION OF WHICH IS EXPOSED SO AS TO PROVIDE A LIQUID INDICATING SURFACE. A PRISMATIC SURFACE ARRANGEMENT ASSOCIATED WITH THE LOWER PORTION OF THE BODY SECTION IS ADAPTED TO RECEIVE LIGHT RAYS FROM AND REFLECT LIGHT RAYS TO THE UPPER EXPOSED LEVEL INDICATING SURFACE. THE LIGHT TRANSMITTING MEMBER IS HELD WITHIN AN ENCOMPASSING SLEEVE-LIKE DEVICE WHICH IS OPEN AT ONE EXTREMITY IN THE VICINITY OF THE EXPOSED LEVEL INDICATING SURFACE AND OPEN AT THE OPPOSITE EXTREMITY IN THE VICINITY OF THE PRISMATIC SURFACE ARRANGEMENT AND INCLUDES A SCREEN MEMBER ATTACHED THERETO. THE SLEEVE-LIKE DEVICE IS MOUNTED IN THE UPPER WALL OF A LIQUID CONTAINER.
Inventors
- 👤 John F Nelson
Bibliographic Details
Claims Analysis
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |