Patent US3247728A successfully refreshed from Google Patents.
US3247728A
Expired / Lapsed
US
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Tuner device
Assignee: Motorola Solutions Inc
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Filing: 1963-10-28
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Granted: 1966-04-26
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Expires: 1983-10-28
Abstract
No abstract record available.
Inventors
- 👤 Robert A Wolf
- 👤 Alfred J Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:43
CPC Classifications
H; H03; H03J; H03J5/00; H03J5/02; H03J5/04; H03J5/12; H03D; H03D5/00; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20207; Y10T74/20238; Y10T74/20244
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
188 words
A TUNING MECHANISM FOR USE IN A COMBINATION FMAM RADIO RACEIVER, INCLUDING IN COMBINATION, A SELECTOR SWITCH ACTUABLE TO FM AND AM POSITIONS FOR FM AND AM MODES OF RECEPTION RESPECTIVELY, A PLURALITY OF PUSHBUTTON CAM SLIDE ASSEMBLIES EACH COMPRISING A PRESETTABLE CAM SLIDE LINEARLY DISPLACEABLE TO TUNE THE RECEIVER TO GIVEN FREQUENCIES FOR FM AND AM RECEPTION AND A MANUALLY DEPRESSIBLE PUSHBUTTON FIXED TO SAID SLIDE AND ACCESSIBLE FROM OUTSIDE OF THE RECEIVER FOR LINEARLY DISPLACING SAID SLIDE, A SELECTOR SWITCH ACTUATING MEMBER LINEARLY DISPLACEABLE TRANSVERSELY TO THE DISPLACEMENT OF SAID CAM SLIDES AND HAVING A PLURALITY OF OBLIQUE CAM SURFACES THEREON ENGAGEABLE TO DISPLACE SAID ACTUATING MEMBER TO SELECTIVELY ACTUATE SAID SELECTOR SWITCH TO FM AND AM POSITIONS, AND A CAM ON THE UNDERSIDE OF EACH OF SAID PUSHBUTTONS, EACH OF SAID CAMS BEING MANUALLY SWITCHABLE TO SELECTIVELY ENGAGE AN APPROPRIATE ONE OF SAID CAM SURFACES ON SAID ACTUATING MEMBER TO ACTUATE SAID SELECTOR SWITCH TO FM AND AM POSITIONS, WHEREBY EACH OF SAID PUSHBUTTON CAM SLIDE ASSEMBLIES MAY BE SELECTIVELY PRESET FOR TUNING THE RECEIVER TO A GIVEN FREQUENCY AND A GIVEN MODE OF RECEPTION.
Claim 2
Dependent Claim
188 words
A TUNING MECHANISM FOR USE IN A COMBINATION FMAM RADIO RACEIVER, INCLUDING IN COMBINATION, A SELECTOR SWITCH ACTUABLE TO FM AND AM POSITIONS FOR FM AND AM MODES OF RECEPTION RESPECTIVELY, A PLURALITY OF PUSHBUTTON CAM SLIDE ASSEMBLIES EACH COMPRISING A PRESETTABLE CAM SLIDE LINEARLY DISPLACEABLE TO TUNE THE RECEIVER TO GIVEN FREQUENCIES FOR FM AND AM RECEPTION AND A MANUALLY DEPRESSIBLE PUSHBUTTON FIXED TO SAID SLIDE AND ACCESSIBLE FROM OUTSIDE OF THE RECEIVER FOR LINEARLY DISPLACING SAID SLIDE, A SELECTOR SWITCH ACTUATING MEMBER LINEARLY DISPLACEABLE TRANSVERSELY TO THE DISPLACEMENT OF SAID CAM SLIDES AND HAVING A PLURALITY OF OBLIQUE CAM SURFACES THEREON ENGAGEABLE TO DISPLACE SAID ACTUATING MEMBER TO SELECTIVELY ACTUATE SAID SELECTOR SWITCH TO FM AND AM POSITIONS, AND A CAM ON THE UNDERSIDE OF EACH OF SAID PUSHBUTTONS, EACH OF SAID CAMS BEING MANUALLY SWITCHABLE TO SELECTIVELY ENGAGE AN APPROPRIATE ONE OF SAID CAM SURFACES ON SAID ACTUATING MEMBER TO ACTUATE SAID SELECTOR SWITCH TO FM AND AM POSITIONS, WHEREBY EACH OF SAID PUSHBUTTON CAM SLIDE ASSEMBLIES MAY BE SELECTIVELY PRESET FOR TUNING THE RECEIVER TO A GIVEN FREQUENCY AND A GIVEN MODE OF RECEPTION.
References Cited (Backward Citations)
US2898767A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |