US3568113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Visual indication means for a pushbutton tuner
Assignee: R&E Hopt KG
•
Filing: 1969-02-20
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Granted: 1971-03-02
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Expires: 1989-02-20
Abstract
Abstract A tuning device of radio frequency communication equipment employs a plurality of tuning spindles with which are associated scales and tuning element pointers. A depressable key, through which each scale and pointer is visible, is arranged with each spindle to actuate a switch element for tuning the desired frequency channel.
Inventors
- 👤 Rudolf Hopt
- 👤 Rudolf Mayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:30
CPC Classifications
H; H03; H03J; H03J1/00; H03J1/06; H03J1/066; H03J1/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
91 words
A tuning device for radio frequency communication equipment, comprising: a plurality of parallel tuning spindles; an adjustable potentiometer wiper slidably mounted on each tuning spindle; a pointer attached to said wiper; a scale arranged parallel to said spindle and cooperating with said pointer to give a visual indication of the position of said wiper with respect to said spindle; and a key, for actuating switches to determine the function of each tuning element, disposed above each pointer and scale arrangement whereby said scale and pointer arrangement is visible through said key.
Claim 2
Dependent Claim
91 words
A tuning device for radio frequency communication equipment, comprising: a plurality of parallel tuning spindles; an adjustable potentiometer wiper slidably mounted on each tuning spindle; a pointer attached to said wiper; a scale arranged parallel to said spindle and cooperating with said pointer to give a visual indication of the position of said wiper with respect to said spindle; and a key, for actuating switches to determine the function of each tuning element, disposed above each pointer and scale arrangement whereby said scale and pointer arrangement is visible through said key.
Claim 3
Dependent Claim
24 words
A tuning device according to claim 1, wherein said key contains a window through which said scale becomes visible when said key is depressed.
Claim 4
Dependent Claim
38 words
A tuning device according to claim 2, wherein said scale has a base, one surface of which faces said window, disposed between said window of said key and its associated spindle and over which surface said pointer extends.
Claim 5
Dependent Claim
31 words
A tuning device according to claim 1, further including an adjustable switching means supported on said key, for engaging with a switch of said tuning device, when said key is depressed.
Claim 6
Dependent Claim
29 words
A tuning device according to claim 1, further including a common tuning shaft having linkage mounted thereon for connecting said spindle with said shaft when said key is depressed.
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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |