Patent US3629708A successfully refreshed from Google Patents.
US3629708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vhf{14 uhf tuner mechanism for television receivers
Assignee: Motorola Solutions Inc
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Filing: 1969-09-16
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Granted: 1971-12-21
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Expires: 1989-09-16
Abstract
Abstract A tuner control mechanism for a television receiver capable of operation in the VHF and UHF bands of frequencies includes a conventional VHF tuner mounted on a common shaft with a turret of radially extending linear potentiometers for each of the detented positions of the VHF tuner. The linear potentiometers are used to provide a tuning voltage for a varactor tuned UHF tuner, and a band select switch is located for operation by a rotary cam which is rotated with the VHF and UHF tuner elements in order to effect selection of the band of frequency to which the television receiver is to be tuned for each detented position of the mechanism.
Inventors
- 👤 Orville D Thurnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:12
CPC Classifications
H; H03; H03J; H03J1/00; H03J1/06; H03J1/066; H03J5/00; H03J5/02; H03J5/0218; H03J5/04; H03J5/10; H03J5/24; H03J5/242; H03J5/244
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
258 words
In a television receiver capable of operation in at least the VHF and UHF bands of frequency, a tuner control apparatus including in combination: a tuner control shaft; VHF tuner means mounted for rotation with the tuner control shaft and having a predetermined number of adjustable tuning elements located at different rotary positions about the tuner control shaft; UHF tuner means mounted for rotation with the tuner control shaft and having a predetermined number of adjustable tuning elements located at different predetermined positions about the tuner control shaft; means for rotating the tuner control shaft to simultaneously change the rotary positions of the VHF and UHF tuner means to cause different ones of the tuning elements of the UHF and VHF tuner means to be located at predetermined fixed locations for controlling the outputs obtained from the respective tuner means; a band select switch for selecting one of the tuner means for controlling the tuning of the television receiver; camming means for rotation with the tuner control shaft to operate the band select switch for selecting said one of the tuner means; first and second concentric rotatably mounted tuning element adjusting shafts located at a predetermined fixed position relative to the tuner control shaft; first adjusting means attached to the first turning control shaft for engagement with an adjustable tuning element of the VHF tuner means rotated adjacent said fixed position; and second adjusting means attached to the second concentric shaft for engagement with an adjustable tuning element of the UHF tuner means rotated adjacent said fixed position.
Claim 2
Dependent Claim
258 words
In a television receiver capable of operation in at least the VHF and UHF bands of frequency, a tuner control apparatus including in combination: a tuner control shaft; VHF tuner means mounted for rotation with the tuner control shaft and having a predetermined number of adjustable tuning elements located at different rotary positions about the tuner control shaft; UHF tuner means mounted for rotation with the tuner control shaft and having a predetermined number of adjustable tuning elements located at different predetermined positions about the tuner control shaft; means for rotating the tuner control shaft to simultaneously change the rotary positions of the VHF and UHF tuner means to cause different ones of the tuning elements of the UHF and VHF tuner means to be located at predetermined fixed locations for controlling the outputs obtained from the respective tuner means; a band select switch for selecting one of the tuner means for controlling the tuning of the television receiver; camming means for rotation with the tuner control shaft to operate the band select switch for selecting said one of the tuner means; first and second concentric rotatably mounted tuning element adjusting shafts located at a predetermined fixed position relative to the tuner control shaft; first adjusting means attached to the first turning control shaft for engagement with an adjustable tuning element of the VHF tuner means rotated adjacent said fixed position; and second adjusting means attached to the second concentric shaft for engagement with an adjustable tuning element of the UHF tuner means rotated adjacent said fixed position.
Claim 3
Dependent Claim
65 words
The combination according to claim 1 wherein the camming means have a predetermined number of cam surfaces corresponding to the number of rotary positions of the VHF and UHF tuner means, with the band select switch being operated under control of the cam surfaces, and with the cam surfaces being changed simultaneously with changes in the tuning positions of the VHF and UHF tuner means.
Claim 4
Dependent Claim
78 words
The combination according to claim 2 wherein the VHF and UHF tuner means are rotary tuner means mounted on the tuner control shaft, and wherein the camming means is a rotary cam mounted for rotation on the tuner control shaft, and further including means for obtaining an output from the tuning means at a predetermined rotational position thereof wherein the band select switch is located to correspond to that predetermined rotational position for operation by the camming means.
Claim 5
Dependent Claim
161 words
In a television receiver capable of operation in at least the VHF and UHF bands of frequency, a tuner control apparatus including in combination: a tuner shaft; VHF tuner means having a predetermined number of tuning elements located at different rotary positions about the tuner shaft; UHF tuner means having a predetermined number of tuning elements located at different predetermined rotary positions about the tuner shaft; means for rotating the shaft to simultaneously change the rotary positions of the VHF and UHF tuning elements to cause different ones of the tuning elements of the UHF and VHF tuner means to be located at predetermined fixed locations for controlling the outputs obtained from the respective tuner means; a band select switch for selecting one of the tuner means for controlling the tuning of the television receiver; camming means mounted for rotation with the VHF and UHF tuner means to operate the band select switch for selecting said one of the tuning means.
Claim 6
Dependent Claim
161 words
In a television receiver capable of operation in at least the VHF and UHF bands of frequency, a tuner control apparatus including in combination: a tuner shaft; VHF tuner means having a predetermined number of tuning elements located at different rotary positions about the tuner shaft; UHF tuner means having a predetermined number of tuning elements located at different predetermined rotary positions about the tuner shaft; means for rotating the shaft to simultaneously change the rotary positions of the VHF and UHF tuning elements to cause different ones of the tuning elements of the UHF and VHF tuner means to be located at predetermined fixed locations for controlling the outputs obtained from the respective tuner means; a band select switch for selecting one of the tuner means for controlling the tuning of the television receiver; camming means mounted for rotation with the VHF and UHF tuner means to operate the band select switch for selecting said one of the tuning means.
Claim 7
Dependent Claim
75 words
The combination according to claim 4 further including overriding switch means connected in circuit with the band select switch for selecting one of the VHF or UHF tuner means for controlling the tuning of the television receiver irrespective of the operation of the band select switch effected by the camming means and wherein the VHF tuner means, the UHF tuner means, and the camming means all are mounted on the tuner shaft for simultaneous rotation.
Claim 8
Dependent Claim
72 words
The combination according to claim 4 wherein the band select switch is controlled by a cam follower engaging the surface of the camming means and the camming means is a programmable cam having an individual cam surface corresponding to each of said tuning positions, with each cam surface being adjustable to either one of two positions to effect selection of the VHF or UHF tuner means at each position of rotation thereof.
Claim 9
Dependent Claim
250 words
In a television receiver capable of operation in at least the VHF and UHF bands of frequency, a tuner control apparatus including in combination; a rotary VHF tuner means having a predetermined number of tuning elements each being arranged for rotation to a first preselected position so that the tuning element rotated to the preselected position is effective to control the tuning of the VHF tuner means; a UHF tuner means having at least said predetermined number of tuning elements each being arranged for rotation to a second preselected position so that control of the UHF tuner means is effected by the tuning element rotated to the second preselected position; means for simultaneously rotating the tuning elements of the VHF and UHF tuner means to locate different ones of the tuning elements of said respective tuner means at the first and second preselected positions; rotary cam means mounted for rotation with the VHF and UHF tuner means and having camming surfaces corresponding to said predetermined number of tuning elements; a band select switch means having a cam follower located for operation by the camming surfaces, with the cam follower operating the band select switch to select the VHF or UHF tuner means for controlling the band of operation of the television receiver; and means corresponding to the first and second preselected positions of the VHF and UHF tuner means for adjusting the tuning elements of the VHF and UHF tuner means located at said first and second preselected positions, respectively.
Claim 10
Dependent Claim
250 words
In a television receiver capable of operation in at least the VHF and UHF bands of frequency, a tuner control apparatus including in combination; a rotary VHF tuner means having a predetermined number of tuning elements each being arranged for rotation to a first preselected position so that the tuning element rotated to the preselected position is effective to control the tuning of the VHF tuner means; a UHF tuner means having at least said predetermined number of tuning elements each being arranged for rotation to a second preselected position so that control of the UHF tuner means is effected by the tuning element rotated to the second preselected position; means for simultaneously rotating the tuning elements of the VHF and UHF tuner means to locate different ones of the tuning elements of said respective tuner means at the first and second preselected positions; rotary cam means mounted for rotation with the VHF and UHF tuner means and having camming surfaces corresponding to said predetermined number of tuning elements; a band select switch means having a cam follower located for operation by the camming surfaces, with the cam follower operating the band select switch to select the VHF or UHF tuner means for controlling the band of operation of the television receiver; and means corresponding to the first and second preselected positions of the VHF and UHF tuner means for adjusting the tuning elements of the VHF and UHF tuner means located at said first and second preselected positions, respectively.
Claim 11
Dependent Claim
48 words
The combination according to claim 7 wherein the tuning elements of at least the UHF tuner are adjustable potentiometers and further including additional switch means corresponding to said second preselected position for obtaining the output of the potentiometer of the UHF tuner means at said second preselected position.
Claim 12
Dependent Claim
68 words
The combination according to claim 8 wherein the potentiometers are linear potentiometers mounted within a disc-shaped housing and arranged with the lengths thereof extending radially from the center of rotation of the UHF tuner housing, potentiometer adjusting means for each of the potentiometers being located on the outside circumference of the disc and being located for engagement with the tuning element adjusting means at said second preselected position.
Claim 13
Dependent Claim
16 words
The combination according to claim 9 wherein the first and second preselected positions are the same.
Claim 14
Dependent Claim
61 words
The combination according to claim 10 wherein the tuning element adjusting means includes first means for adjusting the VHF tuning elements by adjusting the fine tuning thereof and includes second means for adjusting the UHF tuning elements by moving the tap on each of the linear potentiometers, with the first and second adjusting means being concentrically mounted on a common shaft.
Claim 15
Dependent Claim
29 words
The combination according to claim 11 wherein the VHF tuner means, the UHF tuner means and the cam means all are mounted for simultaneous rotation on a single shaft.
Claim 16
Dependent Claim
73 words
The combination according to claim 13 wherein the camming means is a programmable cam, having cam surfaces settable to one of two heights at each rotational position of the UHF and VHF tuner means so that a cam surface of one height causes the band select switch to select the VHF tuner means and a cam surface at the other height causes the band select switch means to select the UHF tuner means.
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) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |