US3613149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-cleaning device for rotary television set tuners
Assignee: Individual
•
Filing: 1970-02-06
•
Granted: 1971-10-19
•
Expires: 1990-02-06
Abstract
Abstract A RESILIENT BRUSH MEMBER IS DESCRIBED FOR APPLICATION AGAINST THE LONGITUDINALLY-EXTENDING SETS OF ELECTRICAL CONTACT POINTS OF TUNER STRIPS IN A ROTARY DRUM TUNER FOR BRUSHCLEANING THE POINTS AS THE TUNER IS ROTATED DURING USE WHILE CHANGING FROM CHANNEL TO CHANNEL. IN ONE FORM, THE BRUSH IS SUPPORTED BY THE TUNER DRUM HOUSING AND SUPPORT STRUCTURE, AND IN ANOTHER EMBODIMENT THE BRUSH IS IN THE FORM OF A LAYER OF RESILIENT BRUSH MATERIAL FIXED AGAINST THE INSIDE OF THE TUNER ASSEMBLY COVER AND ADAPTED TO PRESS AGAINST THE CONTACT POINTS WHEN THE COVER IS FITTED IN PLACE ON THE HOUSING AND SUPPORT STRUCTURE.
Inventors
- 👤 David E Gurkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:30
CPC Classifications
H; H03; H03J; H03J1/00; H03J1/06; H03J1/14
Claims Analysis
Total Claims: 0
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References 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) | 1974-10-18 | 1975-04-19 | 1975-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-18 | 1979-04-19 | 1979-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-18 | 1983-04-19 | 1983-10-19 | $7700.00 | Window Closed / Lapsed |