US3857360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Uhf channel indicating mechanism
Assignee: Panasonic Holdings Corp
•
Filing: 1972-06-14
•
Granted: 1974-12-31
•
Expires: 1992-06-14
Abstract
Abstract A channel indicating mechanism for a UHF tuner. The mechanism is for use with a tuner having a detent controlled tuner control shaft which is moved through a predetermined angle for each movement of the control shaft to change a tuner from one UHF channel to the next. The indicating mechanism has channel indicating discs having numbers thereon which, when the discs are rotated, are positioned to form two digit channel numbers. The disc for indicating the one''s number is driven step by step from the tuning shaft, the driving means for the disc for indicating the ten''s number is provided which rotates the other disc one position each time the one disc has been moved through ten steps.
Inventors
- 👤 H Tonari
- 👤 S Kitaichi
- 👤 M Imai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:13
CPC Classifications
H; H03; H03J; H03J1/00; H03J1/06; H03J1/14; H03J1/02; H03J1/04; H03J1/045
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
171 words
A channel indicating mechanism for a UHF tuner having a tuner control shaft adjustable to tune said UHF tuner to any one of the UHF television channels and tuning means having a tuning shaft coupled to and driving said tuner control shaft through a series of rotational steps of predetermined angles and a fine tuning shaft coupled to and continuously rotating said tuner control shaft a small rotational angle within the angle of any angular step, said indicating mechanism comprising: a detent element mounted on said tuning shaft and having a plurality of gear teeth on the periphery thereof; spring loaded detent means engaged between adjacent teeth of said detent element so as to impart a click motion during rotation of said tuning shaft; and channel indicating means with which said detent element teeth are meshed and driven step-by-step by said tuning shaft through said detent element upon rotation of said tuning shaft under the control of said detent means for indicating the channel to which the UHF tuner is tuned.
Claim 2
Dependent Claim
171 words
A channel indicating mechanism for a UHF tuner having a tuner control shaft adjustable to tune said UHF tuner to any one of the UHF television channels and tuning means having a tuning shaft coupled to and driving said tuner control shaft through a series of rotational steps of predetermined angles and a fine tuning shaft coupled to and continuously rotating said tuner control shaft a small rotational angle within the angle of any angular step, said indicating mechanism comprising: a detent element mounted on said tuning shaft and having a plurality of gear teeth on the periphery thereof; spring loaded detent means engaged between adjacent teeth of said detent element so as to impart a click motion during rotation of said tuning shaft; and channel indicating means with which said detent element teeth are meshed and driven step-by-step by said tuning shaft through said detent element upon rotation of said tuning shaft under the control of said detent means for indicating the channel to which the UHF tuner is tuned.
Claim 3
Dependent Claim
113 words
A channel indicating mechanism as defined in claim 1 wherein said channel indicating means comprises a first indicating disc for indicating one figure of the channel number, a second indicating disc arranged in the vicinity of said first indicating disc for indicating a second figure of the channel number, and driving means engaged with said detent element and coupled to said discs for rotating said first indicating disc upon rotation of said tuning shaft and also rotating said second indicating disc through a predetermined angle step-by-step for each revolution of said first indicating means, whereby the numbers on said first and second indicating discs can together indicate a channel number of two figures.
Claim 4
Dependent Claim
108 words
A channel indicating mechanism as defined in claim 2 wherein said driving means comprises a first driving element geared to said detent element and directly connected to said first indicating disc, a driven element rotatably mounted on said tuning shaft and geared to said first drawing element and rotated through a predetermined angle each time said first driving element has rotated one full revolution, and a second driving element geared to said driven element and directly connected to said second indicating disc, whereby said second indicating disc is rotated step-by-step through a predetermined angle by said second driving element through said first driving element, and said driven element.
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) | 1977-12-30 | 1978-07-01 | 1978-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-30 | 1982-07-01 | 1982-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-30 | 1986-07-01 | 1986-12-31 | $7700.00 | Window Closed / Lapsed |