US4006442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic tuning element assembly
Assignee: Alps Alpine Co Ltd
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Filing: 1975-09-11
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Granted: 1977-02-01
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Expires: 1995-09-11
Abstract
Abstract A variable tuning resistor has a threaded shaft which moves a slider along a linear resistance element. A flexible ribbon is connected at one end to the slider to be moved thereby. A guide member through which the ribbon is guidingly slidable is oriented perpendicular to the shaft extending upwards. The guide member is formed with a window through which the ribbon is visible. The ribbon is formed with a marking such as a slot obliquely along the length thereof in such a manner that as the ribbon is moved the part of the marking visible through the window appears to move from one side of the window toward the other thus serving as a tuning indication. A rotary band switch is connected to the tuning resistor with the shaft coaxially extending therethrough.
Inventors
- 👤 Yasunori Mega
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:16
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/30; H01C10/38; H01C10/40; H01C10/50; H01H; H01H19/00; H01H19/02; H01H19/10; H01H19/14; H01H2019/143; H01H3/00; H01H3/02; H01H3/0213
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
125 words
An electronic tuning element assembly comprising, in combination: a variable tuning resistor having a straight resistance element with contacts at the ends thereof, a slider linearly movable along the resistance element and a threaded shaft screwably extending through the slider so that rotation of the shaft causes linear movement of the slider, a flexible ribbon connected at one end to the slider and a guide member, the ribbon slidably extending through the guide member; and a rotary tuning band switch detachably fixed to the guide member, the shaft extending through the switch coaxially therewith, the switch having a rotary control member, a movable contact fixed for rotation with the rotary control member and a plurality of fixed contacts with which the movable contact is engageable.
Claim 2
Dependent Claim
125 words
An electronic tuning element assembly comprising, in combination: a variable tuning resistor having a straight resistance element with contacts at the ends thereof, a slider linearly movable along the resistance element and a threaded shaft screwably extending through the slider so that rotation of the shaft causes linear movement of the slider, a flexible ribbon connected at one end to the slider and a guide member, the ribbon slidably extending through the guide member; and a rotary tuning band switch detachably fixed to the guide member, the shaft extending through the switch coaxially therewith, the switch having a rotary control member, a movable contact fixed for rotation with the rotary control member and a plurality of fixed contacts with which the movable contact is engageable.
Claim 3
Dependent Claim
24 words
The electronic tuning assembly according to claim 1, in which the guide member has a perpendicular portion which is oriented perpendicular to the shaft.
Claim 4
Dependent Claim
31 words
The electronic tuning assembly according to claim 2, in which the guide member is formed with a parallel portion connected to the perpendicular portion and extending therefrom parallel to the shaft.
Claim 5
Dependent Claim
56 words
The electronic tuning assembly according to claim 2, in which the perpendicular portion of the guide member is formed with an elongated window through which the flexible ribbon is visible, the flexible ribbon being formed with an elongated marking obliquely along the length thereof so that a portion of the marking is visible through the window.
Claim 6
Dependent Claim
27 words
The electronic tuning assembly according to claim 1, further comprising a knob fixed to an end of the shaft which extends external of the rotary band switch.
Claim 7
Dependent Claim
22 words
The electronic tuning assembly according to claim 5, in which the knob detachably retains the rotary bank switch to the guide member.
Claim 8
Dependent Claim
41 words
The electronic tuning assembly according to claim 6, in which the variable tuning resistor comprises a casing which supports the resistance element, slider and shaft, the knob further detachably retaining the rotary band switch and the guide member to the casing.
Claim 9
Dependent Claim
22 words
The electronic tuning assembly according to claim 1, in which the rotary bank switch comprises detent means associated with the fixed contacts.
Claim 10
Dependent Claim
17 words
The electronic tuning assembly according to claim 1, in which the rotary control member is a knob.
Claim 11
Dependent Claim
24 words
The electronic tuning apparatus according to claim 1, further comprising a band indicator fixed to the movable contact for rotation with the movable contact.
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) | 1980-02-01 | 1980-08-02 | 1981-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-01 | 1984-08-02 | 1985-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-01 | 1988-08-02 | 1989-02-01 | $7700.00 | Window Closed / Lapsed |