Patent US3919681A successfully refreshed from Google Patents.
US3919681A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined variable resistor assembly provided with position indicator means
Assignee: Panasonic Holdings Corp
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Filing: 1973-12-26
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Granted: 1975-11-11
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Expires: 1993-12-26
Abstract
Abstract There is provided a combined variable resistor assembly provided with position indicator means for indicating positions of individual variable resistors by respective bright spots adapted to be moved by manipulating the associated variable resistors. This variable resistor assembly may find use mainly for electronic tuners, and with which the present states of the individual variable resistors for volume control, balance control, sound quality control and so forth can be known at a glance at the indicator means.
Inventors
- 👤 Matsuo Nishioka
- 👤 Shunzo Oka
- 👤 Akitoshi Miyashita
- 👤 Kazuo Oshima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:57
CPC Classifications
H; H03; H03J; H03J1/00; H03J1/06; H03J1/066
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
116 words
A combined variable resistor assembly provided with position indicator means, comprising a panel casing formed with a plurality of parallel slots, rotatable variable resistors corresponding in number to the number of said slots and mounted on said panel casing, slide members slidably engaged in said respective slots, drums each secured to an operable shaft of the associated one of said variable resistors, belts each having one end secured to the associated one of said drums and the other end secured to the associated one of said slide members, a light source, and optical fibers each having one end held in the neiborhood of said light source and the other end connected to each said slide members.
Claim 2
Dependent Claim
116 words
A combined variable resistor assembly provided with position indicator means, comprising a panel casing formed with a plurality of parallel slots, rotatable variable resistors corresponding in number to the number of said slots and mounted on said panel casing, slide members slidably engaged in said respective slots, drums each secured to an operable shaft of the associated one of said variable resistors, belts each having one end secured to the associated one of said drums and the other end secured to the associated one of said slide members, a light source, and optical fibers each having one end held in the neiborhood of said light source and the other end connected to each said slide members.
Claim 3
Dependent Claim
38 words
A combined variable resistor assembly provided with position indicator means according to claim 1, wherein each said belt has an edge portion slidably received in a groove formed in said panel casing near and along each said slot.
Claim 4
Dependent Claim
39 words
A combined variable resistor assembly provided with position indicator means according to claim 1, wherein said panel casing is formed with openings having a size greater than the size of said slide members and communicating with said respective slots.
Claim 5
Dependent Claim
38 words
A combined variable resistor assembly provided with position indicator means according to claim 1, wherein each said slide member has a channel-shaped portion in slidable engagement with a wall portion of said panel casing adjacent each said slot.
Claim 6
Dependent Claim
83 words
A combined variable resistor assembly provided with position indicator means according to claim 1, wherein each said variable resistor icnludes a brush holder mounted rotatably on said operable shaft, said brush holder being provided with a resilient member serving as a spring arm and having at the free end thereof a ball or round head, and a stationary click plate formed with one or more click holes, said ball or round head being adapted to be clicked into said click hole or holes.
Claim 7
Dependent Claim
38 words
A combined variable resistor assembly provided with position indicator means according to claim 5, wherein each said variable resistor further includes a cover covering said resilient member having a ball or round head and said stationary click plate.
Claim 8
Dependent Claim
46 words
A combined variable resistor assembly provided with position indicator means according to claim 1, wherein the operable shaft of each said variable resistor has a knurled portion, the associated drum being fitted on said knurled portion and secured by a clamp screw to said knurled portion.
Claim 9
Dependent Claim
30 words
A combined variable resistor assembly provided with position indicator means according to claim 1, wherein all the terminals of each said variable resistor extend straight and in the same direction.
Claim 10
Dependent Claim
36 words
A combined variable resistor assembly provided with position indicator means according to claim 1, which further comprises a switch mounted on said panel casing through a shaft aligned to said operable shafts of said variable resistors.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-10 | 1979-05-12 | 1979-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-10 | 1983-05-12 | 1983-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-10 | 1987-05-12 | 1987-11-11 | $7700.00 | Window Closed / Lapsed |