US3929093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Channel indicating device for television receiving sets
Assignee: Panasonic Holdings Corp
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Filing: 1973-01-09
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Granted: 1975-12-30
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Expires: 1993-01-09
Abstract
Abstract A channel indicating device for television receiving sets, which is capable of indicating UHF channels one at a time interlocked with a rotary shaft of a detent-type tuner for selecting UHF stations.
Inventors
- 👤 Hisao Ikeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:51
CPC Classifications
H; H03; H03J; H03J1/00; H03J1/02; H03J1/04; H03J1/045
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
238 words
A channel indicating device for television receiving sets, comprising: a. a tuner having a tuner shaft projecting therefrom and a first gear affixed to said tuner shaft; b. a main shaft having a second gear affixed thereto; c. a fine adjustment shaft rotatably coaxially mounted on said main shaft and having a cam affixed thereto; d. third and fourth gears coaxially mounted on a connecting shaft, said third and fourth gears having being rotatably coupled to said second and first gears respectively; e. an arm secured to said connecting shaft and pivotally mounted about the axis of said main shaft; f. resilient means for biasing one end of said arm in a predetermined direction; g. lever means contacting said cam and held in abutting engagement with the other end of said arm, rotation of said fine adjustment shaft producing a relatively small displacement of said tuner shaft thereby permitting fine adjustment of said tuner, h. an indicator shaft rotatably mounted on said main shaft and having an indicator gear affixed thereto, said indicator shaft being coaxial with said main shaft and saiD fine adjustment shaft; i. an intermittent gear affixed to said main shaft; and j. an intermittent pinion coupling said indicator gear and intermittent gear, the gear ratio between said indicator gear and said intermittent pinion being selected to provide a desired angular rotation of said indicator shaft for a given angular rotation of said main shaft.
Claim 2
Dependent Claim
238 words
A channel indicating device for television receiving sets, comprising: a. a tuner having a tuner shaft projecting therefrom and a first gear affixed to said tuner shaft; b. a main shaft having a second gear affixed thereto; c. a fine adjustment shaft rotatably coaxially mounted on said main shaft and having a cam affixed thereto; d. third and fourth gears coaxially mounted on a connecting shaft, said third and fourth gears having being rotatably coupled to said second and first gears respectively; e. an arm secured to said connecting shaft and pivotally mounted about the axis of said main shaft; f. resilient means for biasing one end of said arm in a predetermined direction; g. lever means contacting said cam and held in abutting engagement with the other end of said arm, rotation of said fine adjustment shaft producing a relatively small displacement of said tuner shaft thereby permitting fine adjustment of said tuner, h. an indicator shaft rotatably mounted on said main shaft and having an indicator gear affixed thereto, said indicator shaft being coaxial with said main shaft and saiD fine adjustment shaft; i. an intermittent gear affixed to said main shaft; and j. an intermittent pinion coupling said indicator gear and intermittent gear, the gear ratio between said indicator gear and said intermittent pinion being selected to provide a desired angular rotation of said indicator shaft for a given angular rotation of said main shaft.
Claim 3
Dependent Claim
59 words
A channel indicating device as defined by claim 1 which further comprises a separating disc fixedly mounted on said main shaft; and detent means engaging said separating disc, said detent means and separating disc holding said main shaft in a position to which the main shaft has been displaced and permitting displacement therefrom upon rotation of said main shaft.
Claim 4
Dependent Claim
122 words
A channel indicating device as defined by claim 1 which further comprises a channel indicating knob unit, said indicating knob unit comprising a fine adjustment knob element secured to said fine adjustment shaft, a first knob element secured to said indicator shaft and a second knob element secured to said main shaft, said first and second knob elements having numerals thereon indicating the numerals in the tens and units places respectively of the channel numbers, said fine adjustment knob element and said second knob element being provided with knob portions for manual rotation of said fine adjustment shaft and main shaft respectively, rotation of said second knob element producing intermittent rotation of said first knob element to display a selected channel number.
Claim 5
Dependent Claim
55 words
A channel indicating device as defined by claim 3 wherein said first and second knob elements have annular flanges extending radially from the axes of said knob elements, the numerals on said knob elements being located on said annular flanges to permit viewing thereof from a direction corresponding to the axes of said knob elements.
Claim 6
Dependent Claim
53 words
A channel indicating device as defined by claim 3 wherein said fine adjustment knob element is provided with a transparent cylindrical portion, and said first and second knob elements are telescoped into said cylindrical portion, the knob portion of said fine adjustment knob element extending outwardly through an opening in said cylindrical portion.
Claim 7
Dependent Claim
70 words
A channel indicating device as defined by claim 3 wherein said first and second knob elements have respective indicating portions parallel to the axes of said knob element, the numerals in said knob elements being located on said respective indicating portions to permit viewing thereof through the transparent cylindrical portion of said fine adjustment knob element when said first and second knob elements have been telescoped into said cylindrical portion.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |