Lamp filter and lampholder assembly
Abstract
Abstract AN ILLUMINATED SIGNAL UNIT HAS AN INSULATIVE LAMP BASE WITH OPPOSITE UPPER AND LOWER FACES AND A SIDE WALL CONSTRUCTION. A PLURALITY OF LAMP RECEIVING CYLINDRICAL OPENINGS IN THE LAMP BASE EXTEND THROUGH SAID LAMP BASE. EACH CYLINDRICAL OPENING HAS A RADIALLY OUTWARD LAMP FILTER FLANGE RECEIVING GROOVE BETWEEN SAID UPPER AND LOWER FACES. A LAMP FILTER INSERTING AND REMOVING SLOT EXTENDS FROM SAID GROOVE TO SAID SIDE WALL CONSTRUCTION. EACH OPENING RECEIVES A LAMP WITH A NEUTRAL SLEEVE IN SAID OPENING, AN ILLUMINATING LAMP BUBL EXTENDING OUT OF ONE OF SAID FACES, AND A LIVE CONTACT FLANGE EXTENDING OUT OF THE OTHER OF SAID FACES. EACH OF SUCH GROOVES AND CYLINDRICAL OPENINGS RECEIVES A FLEXIBLE LAMP FILTER WITH A FILTER FLANGE IN SUCH GROOVE AND A FILTER BULB EXTENDING ALONG SAID CYLINDRICAL OPENING AND OVER THE LAMP BULB. EACH FILTER CAN BE FLEXED TO BE INSERTABLE IN AND REMOVABLE FROM SUCH GROOVE THROUGH AN ADJACENT SLOT.
Inventors
- 👤 Anthony A Di Pilla
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |