Patent FR1209680A successfully refreshed from Google Patents.
US3859618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for simultaneously controlling a set of variable resistors
Assignee: Panasonic Holdings Corp
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Filing: 1974-04-08
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Granted: 1975-01-07
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Expires: 1994-04-08
Abstract
Abstract A device for controlling a set of variable resistors comprises a casing having a top wall, a bottom wall and a peripheral wall, a plurality of resistive bodies provided on top of the bottom wall of the casing, a rotatable guide member extending within the casing and positioned above and parallel with the individual resistive bodies, said rotatable guide member having the same number of guide arms as the number of the resistive bodies, a plurality of sliders each slidably mounted on the respective guide arms of the guide member and provided with respective brushes providing electric connection between the associated resistive bodies and a conductive portion of the guide member, an operable member having grooves receiving respective projections of the individual sliders, and a drive means for driving the operable member. The individual resistive bodies may belong to respective channels of a multi-channel system, and they may be separately controlled by operating a single operable shaft. Also, the level of output voltage from these resistive bodies may be simultaneously controlled by operating the shaft in a different way. Thus, two different control functions for controlling the same resistive bodies in different ways are provided.
Inventors
- 👤 Matsuo Nishioka
- 👤 Shunzo Oka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:59
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/16; H01C10/20; H01C10/30; H01C10/32
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
137 words
A device for controlling a set of variable resistors comprising a casing having a top wall, a bottom wall and a peripheral wall, a plurality of resistive bodies provided on top of the bottom wall of said casing, a rotatable guide member extending within said casing and positioned above and parallel with said resistive bodies, said rotatable guide having the same number of guide arms as the number of said resistive bodies, a plurality of sliders each slidably mounted on the respective guide arms of said guide member and provided with respective brushes providing electric conduction between the associated resistive bodies and a conductive portion of said guide member, said sliders being provided with respective projections, an operable member having grooves receiving the respective projections of said sliders, and a drive means for driving said operable member.
Claim 2
Independent Claim
137 words
A device for controlling a set of variable resistors comprising a casing having a top wall, a bottom wall and a peripheral wall, a plurality of resistive bodies provided on top of the bottom wall of said casing, a rotatable guide member extending within said casing and positioned above and parallel with said resistive bodies, said rotatable guide having the same number of guide arms as the number of said resistive bodies, a plurality of sliders each slidably mounted on the respective guide arms of said guide member and provided with respective brushes providing electric conduction between the associated resistive bodies and a conductive portion of said guide member, said sliders being provided with respective projections, an operable member having grooves receiving the respective projections of said sliders, and a drive means for driving said operable member.
Claim 3
Dependent Claim
65 words
The device for controlling a set of variable resistors according to claim 1, said guide members having stoppers for restricting the slidable range of said sliders, said stoppers being provided at the free ends of the respective guide arms, the bottom wall of said casing having raised stopper portions adapted to engage with some of said stoppers for restricting the rotation of said guide member.
Claim 4
Dependent Claim
64 words
The device for controlling a set of variable resistors according to claim 1, wherein four sector-shaped resistive bodies are provided on top of the bottom wall of said casing and arranged at a suitable spacing from one another to form a circle, said guide member having four arms and being cross-shaped, said grooves formed in said operable member being arranged to form a square.
Claim 5
Dependent Claim
53 words
The device for controlling a set of variable resistors according to claim 1, wherein said casing comprises a metal case having a top wall and a peripheral wall and a base of an insulating material, said base being secured to said case at the bottom opening thereof by corking protuberances of said case.
Claim 6
Dependent Claim
29 words
The device for controlling a set of variable resistors according to claim 1, said casing having an aperture formed in the top wall, said drive means penetrating said aperture.
Claim 7
Dependent Claim
91 words
The device for controlling a set of variable resistors according to claim 1, which further comprises a support extending upright from the bottom wall of said casing, said guide member being mounted on said support, a conductive spring inserted between said support and the conductive portion of said guide member, and a spring provided on the periphery of a portion of said support extending on the lower side of said bottom wall of the casing opposite said guide member for biasing said guide member toward said bottom Wall of the casing.
Claim 8
Dependent Claim
65 words
The device for controlling a set of variable resistors according to claim 3, said guide member having stoppers for restricting the slidable range of said slider, said stoppers being provided at the free ends of the respective guide arms, the bottom wall of said casing having raised stopper portions adatped to engage with some of said stoppers for restricting the rotation of said guide member.
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) | 1978-01-06 | 1978-07-08 | 1979-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-06 | 1982-07-08 | 1983-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-06 | 1986-07-08 | 1987-01-07 | $7700.00 | Window Closed / Lapsed |